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    Preparation of Epoxy Microspheres by Continuous Photopolymerzation and Its Surface Functionalization
    HU Xiangwu, ZHU Xiaoqun, NIE Jun, WANG Tao, XU Yanqing, LIU Yao
    Imaging Science and Photochemistry    2020, 38 (5): 771-779.   DOI: 10.7517/issn.1674-0475.200301
    Abstract142)      PDF (3873KB)(890)       Save
    In this paper, the functional polymer microspheres with epoxy functional groups on the surface were prepared by using a self-made continuous photopolymerization device based on suspension photopolymerization. Polymeric PGMA microspheres were prepared by copolymerization of glycidyl methacrylate (GMA) with divinylbenzene (DVB). The effects of initiator dosage, monomer ratio, solvent ratio, stirring rate and light intensity on microsphere size and morphology were investigated. The structure, morphology and properties of the samples were characterized by electron microscopy, infrared spectroscopy (IR) and thermogravimetric (TG). By optimizing the experimental conditions, the particle size controllability of the microspheres was realized. IR determined that the microspheres contained epoxy group, and the microspheres prepared by the microscope had a good sphericity. These results showed the surface of the microscope is rich in epoxy and easy to be modified.
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    The Latest Research Progress of TiO 2 Inverse Opal Photonic Crystal
    YU Jie, CI Mingzhu, LU Quanling, MA Shuqing, JIANG Li, LEI Juying, LIU Yongdi, ZHANG Jinlong
    Imaging Science and Photochemistry    2018, 36 (1): 14-32.   DOI: 10.7517/j.issn.1674-0475.2018.01.002
    Abstract372)      PDF (8745KB)(1748)       Save
    The study of TiO 2 inverse opal photonic crystal is concerned by the majority of scientists in recent years. It has the advantages of the titanium dioxide including non-toxic,the high refractive index, good biocompatibility, and excellent properties in electrochemistry, photo-catalysis, etc. And it also has optical properties of the band gap, photonic localization, slow light effect, super prism effect and negative refraction effect of the photonic crystal, which contributes to multitudinous potential applications in chemical sensors, solar cells, photo-catalysis, high efficient microwave wire,photonic crystal fiber, etc. In this paper,the preparation, modification and applications of the TiO 2 inverse opal photonic crystal in recent years were summarized.
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    Surface Plasmon Resonance (SPR)——The Principle of a New Method for Chemical Detection
    WU Shi-kang, WANG Peng-fei
    Imaging Science and Photochemistry    2008, 26 (2): 157-168.   DOI: 10.7517/j.issn.1674-0475.2008.02.157
    Abstract1161)      PDF (1835KB)(7258)       Save
    Recently, the phenomenon of surface plasmon resonance (SPR) has attracted more and more extensive attention due to its special application in the field of metallic nano-materials and to be used as a sensitive reporter for the detection of different chemical and bio-chemical species.In this paper, the mechanism for the formation of SPR was introduced in details. And some problems concerned how to use this type of reporter for detection were also discussed systematically.
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    MA Jin-shi
    Imaging Science and Photochemistry    2002, 20 (2): 131-148.   DOI: 10.7517/j.issn.1674-0475.2002.02.131
    Abstract1203)      PDF (662KB)(5189)       Save
    The current state of seond generational prophyrin based photosensitizers used in photodynamic therapy (PDT) is reviewed,which are most chlorins in the stages of clinical and pre-clinical trials.The research on photophysical properties showed that they are powerful photodynamic drugs.Some biological molecule linked porphyrins and boronated derivatives are also presented,which may have good future used for phototherapeutic agents.
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    Application of Photocatalytic Process in the Filed of Degrading Organic Dye Pollutants
    CUI Yu-min
    Imaging Science and Photochemistry    2004, 22 (6): 434-443.   DOI: 10.7517/j.issn.1674-0475.2004.06.434
    Abstract863)      PDF (1115KB)(4351)       Save
    Photocatalytic process is one of the current technology with high efficiency and economizing energy for the removal of pollutant from water.The application of photocatalytic process in the filed of degrading organic dye pollutants is reviewed,based on the findings reported in the present literatures,including the present advance of photocatalytic destruction of organic dye pollutants,the mechanism of photocatalytic reaction,the kinetics of photocatalytic reaction and some problems existing in the progress of photocatalytic technology and so on.
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    XIE Yin-de, CHEN Feng, HE Jian-jun, ZHAO Jin-cai
    Imaging Science and Photochemistry    2000, 18 (4): 357-365.   DOI: 10.7517/j.issn.1674-0475.2000.04.357
    Abstract948)      PDF (1513KB)(5168)       Save
    The photo Fenton oxidation is an effecitve advanced oxidation process (AOP). It is gradually using in the treatment of organic pollutants in wastewater. This paper describes the recent advance in this field including the study of the oxidation mechanism, its ultilization in the environmental treatment and some new modified photo-Fenton methods.
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    YU Xin-rui, ZHANG Shu-fen, YANG Jin-zong
    Imaging Science and Photochemistry    2000, 18 (3): 243-253.   DOI: 10.7517/j.issn.1674-0475.2000.03.243
    Abstract1103)      PDF (425KB)(4069)       Save
    The main study methods and present research conclusions of photofading of organic dyes were reviewed in this paper.The processes of photooxidation and photoreduction,factors, typical reaction procedures,and study means were systematically discussed.The methods to improve the light fastness by designing the structures of dye molecules and using additives were introduced.
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    Research on Semiconductor Quantum Dots for Biological Imaging
    YU Qi-yu, LIU Chun-yan
    Imaging Science and Photochemistry    2006, 24 (5): 382-390.   DOI: 10.7517/j.issn.1674-0475.2006.05.382
    Abstract820)      PDF (1649KB)(2506)       Save
    The unique optical properties of semiconductor quantum dots(QDs) make them very promising as fluorescent probes in biomedical application.We review current approaches to the synthesis,surface modification and bioconjugation of QDs,as well as their advantages over traditional organic dyes in biological imaging.
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    Recent Progress in Synthesis and Properties of the Core-Shell Nanoparticles
    WANG Ying, WANG Hua, LI Rong, DU Yu-kou
    Imaging Science and Photochemistry    2010, 28 (1): 65-78.   DOI: 10.7517/j.issn.1674-0475.2010.01.65
    Abstract1092)      PDF (1677KB)(4920)       Save
    As an important branch of composite nanoparticles,core-shell nanoparticles have received great concern due to their versatility of optics,catalysis,megnetism recently.In this paper,a comprehensive review was presented on the core-shell nanoparticles including the preparation,application, and then the development trends of core-shell nanoparticles were also proposed.
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    YOU Chang-jiang, XIE Rong, YANG Guo-qiang, LI Yi
    Imaging Science and Photochemistry    2003, 21 (2): 147-155.   DOI: 10.7517/j.issn.1674-0475.2003.02.147
    Abstract936)      PDF (609KB)(3615)       Save
    Photoisomerization is one of the most important photoreactions.In this paper the mechanisms of photosensitization of olefins based on the perpendicular intermediate theory and potential energy surfaces are described.The determination of the triplet state energy and the selection of sensitizers are also discussed.
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    Imaging Science and Photochemistry    1997, 15 (4): 357-362.   DOI: 10.7517/j.issn.1674-0475.1997.04.357
    Abstract1087)      PDF (261KB)(2591)       Save
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    Imaging Science and Photochemistry    1999, 17 (4): 364-375.   DOI: 10.7517/j.issn.1674-0475.1999.04.364
    Abstract739)      PDF (1379KB)(2925)       Save
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    Solder Resist Ink for Printed Electronics and Its Developmental Tendency
    YANG Chao, CHANG Yu, YANG Zhenguo
    Imaging Science and Photochemistry    2014, 32 (4): 314-320.   DOI: 10.7517/j.issn.1674-0475.2014.04.314
    Abstract919)      PDF (784KB)(3211)       Save

    Recent studies on solder resist ink for PCB manufacture and its developmental trendwere introducedand reviewed, focusing on solder resist ink for inkjet printing, solder resist for flexible electronics, water soluble photoimageable solder resist ink and white solder resist for LED package.

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    Research Progress of the Bottom Anti-reflective Coating for Photoresist
    WANG Kuan, LIU Jingcheng, LIU Ren, MU Qidao, ZHENG Xiangfei, JI Changwei, LIU Xiaoya
    Imaging Science and Photochemistry    2016, 34 (2): 123-135.   DOI: 10.7517/j.issn.1674-0475.2016.02.123
    Abstract1012)      PDF (3870KB)(3937)       Save

    With the rapid development of the micro-electronics industry, lithography technology has been moving forward to a higher resolution. Bottom anti-reflective coating has attracted great attention of researchers in terms of effectively eliminating the standing wave effect and the notching effect, improving the critical dimension uniformity and the patterning resolution. In this article, the photoresists and photolithography technique, and the classification, basic principle, etching process and development situation of the bottom anti-reflective coating are briefly reviewed. The latest research progress of the bottom anti-reflective coating is summarized in detail, especially the application of developable bottom anti-reflective coating in photoresist. Finally, the prospect and research directions of bottom anti-reflective coating in the future are also introduced.

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    SANG Li-xia, FU Xi-xian, BAI Shu-lin, YANG Qiu-hua, WANG Jun-zhen, ZENG Shu-lan
    Imaging Science and Photochemistry    2001, 19 (2): 109-115.   DOI: 10.7517/j.issn.1674-0475.2001.02.109
    Abstract865)      PDF (936KB)(2916)       Save
    The d-electron structure of ion B in perovskite(ABO 3) type oxide has the key role on the binding energy of B-O and the charge-transfer energy(ΔCT) between O 2p and B 3d, so it has an important influence on the photocatalytic activity of ABO 3. In this paper, the species LaBO 3(B=Ti-Co) were prepared by the mixed oxide method and the citrate complex method. By analyzing the photocatalytic degradation experiment and their photo acoustic spectra, the results show that photocatalytic activity of LaBO 3 increases with the increasing of d-electron number of ion B.
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    CHU Jin-fang, TANG Ji-an
    Imaging Science and Photochemistry    2002, 20 (5): 391-398.   DOI: 10.7517/j.issn.1674-0475.2002.05.391
    Abstract840)      PDF (1341KB)(2462)       Save
    A review about purification of photosensitive protein from halophile was presented with 34 references to a survey of publications which were published on this subject.Gel chromatography was used for purifying bacteriorhodopsin basically, while Sensory rhodopsin Ⅰ and Ⅱ were purified by the Ni affinity chromatography.
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    The Discovery and Development of the Green Fluorescent Protein
    WU Shi-kang
    Imaging Science and Photochemistry    2009, 27 (1): 69-78.   DOI: 10.7517/j.issn.1674-0475.2009.01.69
    Abstract879)      PDF (1226KB)(1627)       Save
    In this paper,the principle subject of the Nobel’s Prize in Chemistry in 2008—The Green Fluorescent protein has been introduced briefly.It consists of the discovery,development and the deep significance of this subject.The GFP-like proteins can use to monitor in time and space of an ever-increasing number of phenomena in living cells and organisms like gene expression,protein localization and dynamics.So,it is able to say that the discovery of GFP is concerned with a technical revolution in Biological science.
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    WANG Xiao-hui, ZHANG Min, JIN Zhen-sheng, YANG Jian-jun, ZHANG Zhi-jun
    Imaging Science and Photochemistry    2004, 22 (1): 61-65.   DOI: 10.7517/j.issn.1674-0475.2004.01.61
    Abstract626)      PDF (625KB)(2486)       Save
    In air,the generation of O 3 under bactericidal lamp illumination was studied with a flow-type reactor at room temperature.The results show the concentration of ozone generated is go beyond 0.33 μg/L (allowable concentration) when the contact time for 8 W bactericidal lamp was about more than 7 s,and the ozone concentration increases with the decreasing air flow rate.The catalytic decomposition of ozone was also studied with the use of carbon-supported MnO 2-Fe 2O 3 catalyst.The results show ozone can be decomposed to below 0.28 μg/L when the volume space velocity is less than 1.1×10 5 h -1.
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    Small-molecular Fluorescent Probes for the Detection of Hydrogen Polysulfides and Nitroxyl
    ZHANG Peng, HAN Xiaoyue, YU Fabiao, CHEN Lingxin
    Imaging Science and Photochemistry    2016, 34 (5): 402-425.   DOI: 10.7517/j.issn.1674-0475.2016.05.0402
    Abstract868)      PDF (12564KB)(1144)       Save

    Hydrogen polysulfides (H2Sn) and nitroxyl (HNO) play important roles in a series of physiological and pathological processes, including regulating intracellular redox signaling processes, strengthening myocardial contractility and inhibiting platelet aggregation. H2Sn can be formed by the reaction between hydrogen sulfide (H2S) and reactive oxygen species. Nitric oxide (NO) and HNO can interconvert in the present of superoxide dismutase. H2S can react with NO and form H2Sn and HNO, which will alter the enzymatic activity and protein protein interactions, and then affect protein functions. Therefore, the capability to real-time detect the concentrations of H2Sn and HNO in vivo are of great significance in biomedical research area. Among the various bioanalysis methods, the fluorescent probe technology with the advantages of good selectivity, high sensitivity, real-time in situ detection and negligible damage to sample, has received widespread attention. This review classifies and summarizes the fluorescent probes which are developed in recent years to detect H2Sn and HNO concentrations based on the reaction types between the response units and the analytes. This review mainly focus on elaborating the design concepts, detection mechanisms and biological applications of these probes. Finally, the application prospect of fluorescent probes are discussed. At the same time, this review also cover the fluorescence probes for the detection of hydrogen sulfide and other sulfane sulfur.

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    ZHAGN Chang-yuan, HE Bin, ZHANG Jin-long
    Imaging Science and Photochemistry    2004, 22 (1): 66-77.   DOI: 10.7517/j.issn.1674-0475.2004.01.66
    Abstract985)      PDF (500KB)(3115)       Save
    Since the photocatalytic activity and the hydrophility of titanium dioxide thin film under irradiation of ultraviolet,they have received much attention for their practical applications.A brief summary of research advanced and applications of functional titanium dioxide thin film had been given in this review,and some simply comments on problems in research and the developmental direction in future also had been made.
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    Study on Photocatalytic Activity of Transition Metal Oxide Doped TiO 2 Photocatalysts
    WU Shu-xin, M A Zhi1, QIN Yong ning, JIA Li sh an, LI Hong rui
    Imaging Science and Photochemistry    2005, 23 (2): 94-101.   DOI: 10.7517/j.issn.1674-0475.2005.02.94
    Abstract834)      PDF (1047KB)(3525)       Save
    Transition metal oxide doped TiO 2 photocatalysts MO x/TiO 2 (M=Cr,Mn,Fe,Co,Ni,Cu) were prepared with impregnation method. The photocatalytic activity was investigated with acetic acid as a photocatalytic degradation modal reactant. The results show that the photocatalytic activity of TiO 2 was improved after being doped by transition metal oxide and there exists an optimal supported value at which the degree of improved photocatalytic activity depends on formation enthalpy of corresponding oxide. Volcano profile relationship was found between the photocatalytic activity and the ratio of electronic affinity to ionic radius of transition metal ion.
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    Research Advancement of Liquid Metal Printed Electronics Ink
    WANG Lei, LIU Jing
    Imaging Science and Photochemistry    2014, 32 (4): 382-392.   DOI: 10.7517/j.issn.1674-0475.2014.04.382
    Abstract782)      PDF (1509KB)(3321)       Save

    Printed electronics, which is based on the printing principle, is a newly emerging additive manufacturing technology. It has many advantages for electronics making such as large area, flexibility, personalized and low cost compared to conventional electronics manufacturing. There are generally three typical conductive inks used in printed electronics: conductive carbon ink, conductive polymer and metal conductive ink. However, post-treatments via high temperature curing process are often needed after such printing, so as to improve conductivities as well as reliability of these inks and the printed products. This makes the fabrication process somewhat complicated. Besides, the complex preparation process of the nano materials and inks thus formed also raised the application cost. As a new class of conductive ink, the liquid metal is becoming an important research area. Such ink material owns unique merits such as high electronic conductivity, simple preparation process, requesting no post-processing and so on. To further push forward the research along this direction, this article is dedicated to present an overview on the research advancement of the physical and chemical properties of the liquid metal ink and related typical printing methods over the world. Prospective directions worth of pursuing were outlined.

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    Research Progress on 19F Magnetic Resonance Imaging Tracer
    MENG Fanqiang, LIU Yan, WU Yongjie, TAO Ke, SUN Kang
    Imaging Science and Photochemistry    2020, 38 (5): 753-762.   DOI: 10.7517/issn.1674-0475.200201
    Abstract171)      PDF (4345KB)(464)       Save
    Because of no background noise in vivo, 19F magnetic relaxation imaging (19F MRI) has been widely used in biomedical research. Perfluorocarbons molecules are the main kinds of 19F MRI imaging tracers. The organic fluoride can achieve high 19F density, suitable relaxation time, high signal to noise ratio, as well as multimodal imaging by modification with functional groups. In recent years, 19F MRI imaging tracers have been gradually developed from organic compounds to inorganic compounds. In this review, we summarized the types, research status and application prospects of 19F MRI imaging tracers.
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    Effects and Mechanism of ITO and ZnO Substrate on Surface Morgraphology and Structural of Electrodeposited Cu 2O Thin Films
    WANG Chun-xiang, ZHANG Qing, XUE Min-zhao, SHENG Qiao-rong, LIU Yan-gang
    Imaging Science and Photochemistry    2007, 25 (1): 18-23.   DOI: 10.7517/j.issn.1674-0475.2007.01.18
    Abstract839)      PDF (974KB)(2177)       Save
    The copper(Ⅰ) oxide(Cu 2O) films were grown on ITO and ZnO substrate by electrochemical potentiostatic deposition.The surface morphology and the structure of the films were investigated by X-ray diffraction(XRD) and scanning electron microscopy(SEM).The nanocrystalline Cu 2O grains have been formed on ZnO substrate with a preferential orientation,while the grain size for films grown on ITO ranges from 2 to 5 μm without a preferential orientation.The growth mechanism of the films is discussed.
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    LI Yong-jun, LIU Chun-yan
    Imaging Science and Photochemistry    2003, 21 (6): 446-468.   DOI: 10.7517/j.issn.1674-0475.2003.06.446
    Abstract870)      PDF (917KB)(3540)       Save
    One dimensional nanomaterials become a hot topic,largely due to their wide applications in areas of optics,electronics,environments and medicine.The article concerns the recent progress of one dimensional inorganic nanomaterials,and mainly illustrates their preparations,properties and applications.
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    Imaging Science and Photochemistry    1996, 14 (1): 77-83.   DOI: 10.7517/j.issn.1674-0475.1996.01.77
    Abstract474)      PDF (515KB)(2274)       Save
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    ZHAO Hong-li, YUAN Hui-hui, LAN Min-bo
    Imaging Science and Photochemistry    2003, 21 (3): 212-222.   DOI: 10.7517/j.issn.1674-0475.2003.03.212
    Abstract1900)      PDF (1804KB)(2491)       Save
    Cyanine dyes and related compounds have dominated the field of photography and other sophisticated areas of dye application more than one hundred years.Recently,they are widely used in the field of biological and medical research.This paper concerns research on cyanine dyes and related compounds carried out in recent years focus on their application as fluorescent probes for biological systems and as antitumor agents for photodynamic therapy(PDT).
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    Research Progress of Chemically Amplified Photoresist Materials
    ZHENG Xiangfei, SUN Xiaoxia, LIU Jingcheng, MU Qidao, LIU Ren, LIU Xiaoya
    Imaging Science and Photochemistry    2020, 38 (3): 392-408.   DOI: 10.7517/issn.1674-0475.191011
    Abstract183)      PDF (1630KB)(549)       Save
    The drive toward higher integration degree of chips has led to the development of new resist materials with high resolution. The lithography technology is also developed from ultraviolet full-spectrum to single short-wavelength based on the radiation source. In order to meet the requirements of high sensitivity and resolution of photoresist, chemically amplified photoresists have been developed. "Chemical amplified" can increase the quantum yields and enhance the sensitivity of photoresist, which has been widely used in deep ultraviolet and extreme ultraviolet photoresists. As the film forming agent of photoresist, the resin has a significant effect on the performance of photoresist. This paper focuses on several types of reactions in chemically amplified photoresists:deprotection, rearrangement, intramolecular dehydration, esterification polycondensation, crosslinking and depolymerization reaction. In addition, a series of polymers based on chemically amplified are highlighted, since different resin structures correspond to different reaction mechanisms.
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    Effect of Ionic Liquid Polymers with Different Pendant Group for Polymer Electrolyte on the Photovaltic Performance of Dye-Sensitized Solar Cells
    FANG Yan-yan, LIN Yuan
    Imaging Science and Photochemistry    2013, 31 (6): 430-439.   DOI: 10.7517/j.issn.1674-0475.2013.06.430
    Abstract676)      PDF (1245KB)(1391)       Save

    Three ionic liquid polymers with lithium propane sulfonic, methyl and propane sulfonic acid pendant group respectively were used as polymer matrix in polymer electrolyte-based dye-sensitized solar cells (DSSCs). Change in concentration of these three polymers in ionic liquid-based electrolyte was found to have different effects on the photovaltic performance of DSSCs. The cells with P-HI-based electrolytes have shown an increase in the short-current photocurrent (Jsc) with increasing the content of polymer with propanesulfonic acid pendant group. Upon replacing the pendant group propanesulfonic acid with lithium propanesulfonic and methyl, the performance of DSSCs were reduced. The AFM images of electrolytes were employed to investigate the difference of diffusion in these electrolytes.

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    New Method for Preparation of Nanosilver Colloid Solutions and Their Enhancing Effect on Fluorescent Property
    ZHU Chun-yang, HE Jun-hui
    Imaging Science and Photochemistry    2008, 26 (6): 474-481.   DOI: 10.7517/j.issn.1674-0475.2008.06.474
    Abstract723)      PDF (1586KB)(4292)       Save
    Nanosilver colloid solution was prepared using natural cellulose fibers as solid phase dispersion matrix.Silver ions absorbed by the polar hydroxyl and ether groups of natural cellulose fibers were immersed in NaBH 4 solution of low concentration,and reduced into nanoparticles after desorp-tion from the fibers.Compared to traditional methods,our synthesis proceeded mildly and without any additional stabilizer.The silver nanoparticles prepared were monodisperse and stable for at least one year.The enhanced fluorescence indicated that without the hindrance of macromolecular stabi-lizer,nanosilver colloid solution gave remarkable enhancing effect on fluorescent property in relative low concentration of silver nanoparticles.
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    Applications of Visible-light-driven Aerobic Oxidation in Organic Synthesis
    ZHANG Qingbao, LIU Qiang
    Imaging Science and Photochemistry    2017, 35 (5): 614-625.   DOI: 10.7517/j.issn.1674-0475.2017.04.022
    Abstract624)      PDF (2937KB)(1637)       Save

    Visible-light photoredox catalysis, which shows typical features of clean and energy-saving procedures, excellent functional group tolerance, and high chemical selectivities, is a novel and powerful organic synthesis method. As a cheap, ecologically benign oxidant, the combination of aerobic oxidation with visible-light photoredox catalysis greatly promotes the development of green chemistry. This review briefly summarizes recent achievements in the area of visible-light-driven aerobic oxidation by our laboratory and also give its outlook in the future.

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    Decomposition of Hydrogen Sulfide to Produce Hydrogen under Ultraviolet Light
    XU Hong, BAI Xue-feng
    Imaging Science and Photochemistry    2008, 26 (2): 131-137.   DOI: 10.7517/j.issn.1674-0475.2008.02.131
    Abstract1498)      PDF (1032KB)(3060)       Save
    The direct photodecomposition of hydrogen sulfide to produce hydrogen under ultraviolet light is studied in the sodium solution illuminated by the 10 W low-pressure mercury-lamp (λ= 253.7 nm) as illuminant. The effects of the reaction conditions on the hydrogen production from hydrogen sulfide, such as the form of sulfide ions, the concentration of sodium solution, the pH value of the reaction solution and the rate of hydrogen sulfide are investigated. The results show that direct decomposition of hydrogen sulfide under ultraviolet light could occur without catalyst. The highest hydrogen production rate is 3.0 mL/W·h when the sodium solution is 0.6 mol/L and the successive hydrogen sulfide rate is 25 mL/h.
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    Application of Machine Vision in Optical Manufacturing and Testing
    SONG Guoqing, WU Yumin, FENG Yunpeng, LIU Jingwei
    Imaging Science and Photochemistry    2016, 34 (1): 30-35.   DOI: 10.7517/j.issn.1674-0475.2016.01.030
    Abstract656)      PDF (1718KB)(2089)       Save

    With the rapid development of automation and control field, machine vision technology is getting mature and wins more and more applications in various domains. Through image information processing, machine vision systems use machines instead of human eyes to do all kinds of measurement and judgment. The concept of machine vision and the configuration of a typical machine vision system have been briefly introduced in this review, and the development of the key techniques in machine vision techniques have also been explained. The application of the machine vision in the field of optical manufacturing and testing have been analyzed in detail, especially in the application of automatic polishing processing. The prospects for further development of machine vision in the field of optical manufacturing and testing are presented.

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    Synthesis and Characterization of Er-Yb Codoped LaPO 4 Nanocrystals Possessing Near-IR Fluorescence
    WANG Qi, BO Shu-hui, HU Jin, ZHEN Zhen, LIU Xin-hou
    Imaging Science and Photochemistry    2010, 28 (1): 10-18.   DOI: 10.7517/j.issn.1674-0475.2010.01.10
    Abstract852)      PDF (980KB)(1582)       Save
    Rare earth ions(Er 3+,Eu 3+ and Yb 3+) doped LaPO 4 and YbPO 4 nanocrystals were synthesized by a coordinate precipitation method.In a high temperature organic solution the LaCl 3 and tributyl phosphate form a complex and react with H 3PO 4 to yield LaPO 4 nanocrystals.The structural properties of LaPO 4 nanocrystals were studied by X-ray diffraction(XRD),high resolution transmission electron microscopy(HRTEM),Fourier transform infrared spectrometer(FT-IR). HRTEM measured the size about 4 nm and showed the clear lattice fringe image of the nanocrystals which validated the high crystallinity.XRD patterns show that the samples crystallized in monazite structure.The emission of the nanocrystals under 975 nm excited was measured and the peak was at 1535 nm.Elemental analysis result revealed that the common desiccation in vacuum was failed to remove the residual quenching group such as O—H and C—H.When coated by a LaPO 4 shell the fluorescence intensity was obviously enhanced.It validated the conclusion that the core/shell structure could enhance the emission of nanocrystals.
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    Conductive Ink and Its Application Technology Progress
    LI Luhai, MO Lixin, RAN Jun, XIN Zhiqing
    Imaging Science and Photochemistry    2014, 32 (4): 393-401.   DOI: 10.7517/j.issn.1674-0475.2014.04.393
    Abstract867)      PDF (3007KB)(5669)       Save

    Printed electronics is a new and fast developing technology which applying the traditional printing technology into the electronic products manufacturing. And the printed electronics has broad prospects for development. Conductive ink, as the key materials and foundation of printed electronics, has attracted widespread attention. In this paper, the category, basic composition, used printing technologies and device of the conductive ink are overviewed. The research and developing trends of conductive ink are also expected. Firstly, applying of new functional materials (including CNT, grapheme, et al.) into conductive ink and improving the intrinsic and interconnected properties of such materials is one of the key problems. Meanwhile, solving the problem of interconnecting between the printed circuits and electronic devices is another key problem of conductive ink.

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    Progress of Two-photon Polymerization Technology in Tissue Engineering
    HUANG Xing, LIU Yuan, WANG Xiaopu, ZHAO Yuxia
    Imaging Science and Photochemistry    2017, 35 (4): 396-412.   DOI: 10.7517/j.issn.1674-0475.2017.04.005
    Abstract411)      PDF (4913KB)(1228)       Save

    The natural extracellular matrix (ECM) is a collection of extracellular macromolecules distributed on the cell surfaces or in the intercellular spaces, having a complex grid structure. Through the intimate interaction with cells, it regulates cell growth, proliferation and differentiation. Up to now, the cell-ECM interaction has not been fully understood. The new-emerging tissue engineering involves the construction of a scaffold (ECM in vitro) for the formation of new tissue or organ, which is beneficial to deeply understand the cell-ECM interaction and further lay the foundation for the development of regenerative medicine. Two-photon polymerization (2PP) is an ideal way to construct ECM in vitro due to its advantages of large penetration depth, high spatial selectivity and little damage to biological tissue. In this review, the principles of two-photon absorption and 2PP are introduced firstly. The development of water-soluble photosensitizers and photo-polymerizable hydrogels for tissue engineering are mainly summarized. Finally, the perspective of 2PP technology for tissue engineering is also proposed.

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    CHEN Jinyu, ZHAO Chao, CAO Shuguang, CAO Weixiao
    Imaging Science and Photochemistry    1999, 17 (3): 258-263.   DOI: 10.7517/j.issn.1674-0475.1999.03.258
    Abstract846)      PDF (625KB)(1785)       Save
    The products of the photochemical and thermal decompositions of diphenylamine-4-diazonium salt (DDS), 3-methoxy-diphenylamine-4-diazonium salt (MODDS), N-methyl diphenylamine-4-diazonium salt (NMDDS), and carbazol-3-diazonium salt (CDS) in ethanol were investigated. It was shown that the photochemical decomposition mainly produces ethoxy substituted product of corresponding diazonium salt via the heterolytic cleavage of CN bond. The thermal decomposition, however, produces only the reduced product via the homolytic cleavage of CN bond.
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    Progress in the Studies of Medical Spectral Imaging Technique
    LI Qing-li
    Imaging Science and Photochemistry    2008, 26 (6): 507-515.   DOI: 10.7517/j.issn.1674-0475.2008.06.507
    Abstract772)      PDF (1285KB)(3923)       Save
    The spectral imaging technique was resulted from multispectral remote sensing in 1970s, which has successful applications in geology,agriculture,vegetation,environment,city,military, hydrology,and atmosphere.The potential applications of spectral imaging in the researching and clinical fields of biomedicine were dug in recent years.Recent progresses in the medical spectral imaging technique were reviewed.According to resolution,working model of detector and dispersive element,it was classified and introduced respectively.General situation and outlook on applications in cytogenics,immunofluorescence,histochemistry,and pathology of this new technique was also discussed.Furthermore,some comments were made about the latest trend and problems need to be solved of the medical spectral imaging technique.
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    CHEN Ming, CHEN Qi-dao, XIAO Shan-qiang, HONG Xiao-yin
    Imaging Science and Photochemistry    2001, 19 (3): 208-216.   DOI: 10.7517/j.issn.1674-0475.2001.03.208
    Abstract1153)      PDF (361KB)(4991)       Save
    Hybrid UV curing or dual curing consists of two or more kinds of polymerization or crosslinking reactions that take place in the same system, which is a novel approach to modify polymer materials in-situ. Hybrid UV curing system includes free radical-cationic hybrid UV curing system, Free radical-condensation polymerization system and free radical-free radical system. The mechanism and application of hybrid UV curing are reviewed in this paper.
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    Photochemical Synthesis and Characterization of P(DMAA-co-MMA)/Nano-SiO 2 Complex Hydrogels
    LIU Xiao-xuan, WANG Hong-bo, BAI Ying-kun, WU Guang-guo
    Imaging Science and Photochemistry    2007, 25 (6): 436-444.   DOI: 10.7517/j.issn.1674-0475.2007.06.436
    Abstract780)      PDF (1285KB)(2542)       Save
    Poly (N,N′-dimethylacrylamide) and P (DMAA-co-MMA) copolymer hydrogels have been prepared by the photochemical synthesis,the process of photo-polymerization was completed within 3 minutes.P (DMAA-MMA)/nano-SiO 2 complex hydrogels were prepared by the radical graft copolymerization of N,N′-dimethylacrylamide and a bit of MMA onto the surface of nano-SiO 2 particles whose surface were modified.Irgacure 2959 was used as photo-initiator and N,N′-methylene bisacrylamide (Bis) was used as the cross-linking agent.The products were characterized by FT-IR and SEM.Swelling dynamics,water release behavior,ionic strength sensitive and pH-sensitive performances of the hydrogels were discussed.
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