基于光致脱羧的单组分可见光引发剂的合成及其光化学性能研究

doi:10.7517/j.issn.1674-0475.2018.03.003

影像科学与光化学 ›› 2018, Vol. 36 ›› Issue (3): 226-235.DOI: 10.7517/j.issn.1674-0475.2018.03.003

基于光致脱羧的单组分可见光引发剂的合成及其光化学性能研究

董晓庆^1,2, 李治全¹, 刘仁¹, 刘晓亚¹

1. 江南大学化学与材料工程学院, 江苏无锡 214122;
2. 安庆师范大学化学化工学院光电磁功能材料安徽省重点实验室, 安徽安庆 246011

收稿日期:2017-09-29 修回日期:2017-11-08 出版日期:2018-05-15 发布日期:2018-05-15
通讯作者: 刘晓亚
基金资助:
国家自然科学基金项目（21404048）资助

Synthesis and Photochemical Properties of One-component Visible-light Photoinitiator Based on Photodecarboxylation

DONG Xiaoqing^1,2, LI Zhiquan¹, LIU Ren¹, LIU Xiaoya¹

1. School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu, P. R. China;
2. Anhui Province Key Laboratory of Optoelectronic and Magnetism Functional Materials, School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 246011, Anhui, P. R. China

Received:2017-09-29 Revised:2017-11-08 Online:2018-05-15 Published:2018-05-15

摘要/Abstract

摘要： 单组分可见光引发剂是光固化材料研发中的重要内容。本文设计并合成了一种新型的单组分可见光引发剂——2-硫杂蒽酮乙酸四苯基磷酸盐（TXP），该引发剂以硫杂蒽酮为生色团，通过光致脱羧反应产生活性自由基，进而引发聚合反应。利用核磁和高分辨率质谱对TXP的结构进行了表征；通过光解及电子自旋共振捕获等方法研究了其光致脱羧反应。光聚合动力学研究表明：在可见光源照射下，这种单组分光引发剂能高效引发巯基-烯类单体的聚合反应，具有一定的应用的前景。

关键词: 光引发剂, 单组分, 光致脱羧, 光聚合, 2-硫杂蒽酮乙酸四苯基磷酸盐(TXP)

Abstract: One-component visible-light photoinitiators receive more attention recently. A novel photoinitiator-tetraphenylphosphonium 2-(9-oxo-9H-thioxanthen-2-yl)acetate(TXP) was synthesized and contained thioxanthone as the chromophore, which generate radicals via photodecarboxylation reaction. The structure was characterized by ¹HNMR, ¹³CNMR and HR-MS. The study on photolysis confirmed the photoinduced decarboxylation mechanism. The novel photoinitiator showed high activity in initiating thiol-ene click polymerization under visible-light LED sources, which makes the photoinitiator promising candidates for one-component visible-light photoinitiator.

Key words: photoinitiator, one-component, photodecarboxylation, photopolymerization, tetraphenylphosphonium 2-(9-oxo-9H-thioxanthen-2-yl)acetate(TXP)

董晓庆, 李治全, 刘仁, 刘晓亚. 基于光致脱羧的单组分可见光引发剂的合成及其光化学性能研究[J]. 影像科学与光化学, 2018, 36(3): 226-235.

DONG Xiaoqing, LI Zhiquan, LIU Ren, LIU Xiaoya. Synthesis and Photochemical Properties of One-component Visible-light Photoinitiator Based on Photodecarboxylation[J]. Imaging Science and Photochemistry, 2018, 36(3): 226-235.

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基于光致脱羧的单组分可见光引发剂的合成及其光化学性能研究

Synthesis and Photochemical Properties of One-component Visible-light Photoinitiator Based on Photodecarboxylation

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