香豆素基脂环族肟酯可见光引发剂的合成及性能研究  

Synthesis and Properties of Coumarin-based Alicyclic Oxime-esters as Visible Light Photoinitiators

作　　者：李梦琦 朱俊哲 胡鹏 李治全 刘仁 LI Mengqi;ZHU Junzhe;HU Peng;LI Zhiquan;LIU Ren(International Joint Research Center for Photo-responsive Molecules and Materials,Jiangnan University,Wuxi 214122,Jiangsu,P.R.China;School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,Jiangsu,P.R.China;School of Materials and Energy,Guangdong University of Technology,Guangzhou 510006,Guangdong,P.R.China)

机构地区：[1]江南大学光响应功能分子材料国际联合研究中心,江苏无锡214122 [2]江南大学化学与材料工程学院,江苏无锡214122 [3]广东工业大学材料与能源学院,广东广州510006

出　　处：《影像科学与光化学》2022年第4期704-713,共10页Imaging Science and Photochemistry

基　　金：江苏省自然科学基金面上研究项目(BK20191336)。

摘　　要：本文设计并合成了一系列以香豆素为生色团、肟酯为引发基团的可见光引发剂。通过在肟酯末端引入不同结构的脂肪环,探究了脂肪环自由基作为活性种引发光聚合的行为。该类肟酯光引发剂在350~500 nm具有良好的吸收,在LED可见光辐照下迅速发生光解,具有光漂白特性,光解后产生的活性种可有效引发丙烯酸酯类单体和巯-烯体系单体的自由基光聚合,并可进一步应用于DLP 3D打印,构筑精度较高的三维发光结构。A series of visible light photoinitiators,containing coumarins as chromophores and oxime-esters as initiating groups,were designed and synthesized.The alicyclic groups with different structures were introduced at the end of the oxime esters to study the behavior of alicyclic radicals as active species.The oxime-ester photoinitiators show strong absorption at 350-500 nm and rapid photolysis occurs under LED visible light irradiation with photobleaching characteristics.The active species generated after photolysis can effectively initiate free radical photopolymerization of acrylate monomers and thiol-ene monomers.The novel photoinitiators can be further applied to DLP 3D printing to construct luminescent 3D structures with high precision.

关 键 词：可见光引发剂 脂肪环自由基 肟酯 香豆素 

分 类 号：TQ421[化学工程]