以聚酰胺-胺树形分子为模板制备AgI纳米簇

doi:10.7517/j.issn.1674-0475.2006.06.454

影像科学与光化学 ›› 2006, Vol. 24 ›› Issue (6): 454-461.DOI: 10.7517/j.issn.1674-0475.2006.06.454

以聚酰胺-胺树形分子为模板制备AgI纳米簇

樊新华, 姚维尚, 李国平, 罗运军

北京理工大学, 材料科学与工程学院, 北京, 100081

收稿日期:2006-05-22 修回日期:2006-07-28 出版日期:2006-11-23 发布日期:2006-11-23
通讯作者: 罗运军
基金资助:
2006年度北京理工大学优秀青年教师资助计划(000Y04-18).

Preparation and Characterization of AgI Nanoclusters with PAMAM Dendrimers as Template

FAN Xin-hua, YAO Wei-shang, LI Guo-ping, LUO Yun-jun

School of Materials Science and Engineering Beijing Institute of Technology, Beijing 100081

Received:2006-05-22 Revised:2006-07-28 Online:2006-11-23 Published:2006-11-23

摘要/Abstract

摘要： 本文以聚酰胺-胺(PAMAM)树形分子为模板,原位制备AgI纳米簇.系统地研究了AgI纳米簇制备过程中各种反应条件如树形分子端基、反应时间、Ag⁺与PAMAM摩尔比等对AgI纳米簇粒径的影响,分别用紫外-可见光谱、荧光光谱、透射电镜等对所制备的纳米簇进行表征.在相同的条件下,以G4.5-COOH₃为模板较以G5.0-NH₂为模板制备的AgI纳米簇粒径小、分布均匀,这主要取决于G4.5-COOCH₃PAMAM树形分子所起的“内模板”作用.G4.5-COOH₃树形分子浓度为1×10^-5mol/L,Ag⁺与树形分子摩尔比为30:1时所制备的AgI纳米簇的粒径分布均匀、稳定性好,室温避光可稳定存在两个月以上.

关键词: 碘化银纳米簇, PAMAM树形分子, 模板

Abstract: AgI nanoclusters were successfully prepared by using PAMAM dendrimers as templates in water system. In the prepared process, the size and size distribution of prepared AgI nanoclusters depend on the the terminated groups of PAMAM dendrimers, reaction time, the molar ratio of silver ions to PAMAM dendrimers. The gained AgI/PAMAM dendrimer nanocomposites were characterized by UV-Vis spectrophotometer,fluorescence spectrophotometer,TEM. The size of prepared AgI nanoclusters depend on the the terminated groups of G4.5-COOCH₃ PAMAM dendrimers were smaller than G5.0-NH₂ PAMAM dendrimers in the same conditions. This was result of the inner-template of G4.5-COOCH₃ PAMAM dendrimers. The results show that the stability of AgI/PAMAM dendrimer nanocomposites was better and could preserve more than two months in the room temperature when G4.5 concentration is 1×10^-6 mol/L,the ratio of Ag⁺ to G4.5 dendrimer is 20.

Key words: AgI nanoclusters, PAMAM dendrimers, template

中图分类号:

樊新华, 姚维尚, 李国平, 罗运军. 以聚酰胺-胺树形分子为模板制备AgI纳米簇[J]. 影像科学与光化学, 2006, 24(6): 454-461.

FAN Xin-hua, YAO Wei-shang, LI Guo-ping, LUO Yun-jun. Preparation and Characterization of AgI Nanoclusters with PAMAM Dendrimers as Template[J]. Imaging Science and Photochemistry, 2006, 24(6): 454-461.

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以聚酰胺-胺树形分子为模板制备AgI纳米簇

Preparation and Characterization of AgI Nanoclusters with PAMAM Dendrimers as Template

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