文献类型：期刊文献

中文题名：In situ Multiple Optical Monitoring of Bulk Polymerization

英文题名：原位多重光学监测的本体聚合

作者：ZHANG Ruiqing[1];YIN Kuo[1];CHEN Yanjie[1];GU Fan[1];LIU Jian[1];MA Xiang[1]

机构：[1]School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China

年份：2026

卷号：47

期号：5

起止页码：247

中文期刊名：高等学校化学学报

外文期刊名：Chemical Journal of Chinese Universities

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金(批准号:22125803,22308102,T2488302);广西壮族自治区科学技术厅项目(批准号:AA23062016)资助.

语种：英文

中文关键词：In situ monitoring;Bulk polymerization;Vibration-induced emission

外文关键词：原位监测;本体聚合;振动诱导发光

摘要：Optical visualization provides a highly sensitive,non-invasive,and straightforward approach for the in situ monitoring of bulk polymerization processes.This paper synthesized a 9,14-diphenyl-9,14-dihydrodibenzo[a,c]phenazine(DPAC)-based molecule,whose distinct excited-state conformational responses under different microenvironments enabled the monitoring of microscopic dynamic changes within the system.During the polymerization of methyl methacrylate(MMA),the system transfer from a liquid monomer to a solid polymer.Accompanying this process,the fluorescence of DPAC shifts from red to blue,reflecting the increase in local viscosity and the restriction of molecular motion.Subsequently,the gradual enhancement of phosphorescence and the extension of its lifetime indicate the rising rigidity of the polymer network.Through dual-channel monitoring based on ratio-metric fluores?cence and phosphorescence,this strategy makes the visual tracking of bulk polymerization feasible.
光学可视化是一种高灵敏度、非侵入且简便的原位监测本体聚合过程的方法.本文合成了一种基于9,14-二苯基-9,14-二氢二苯并[a,c]吩嗪(DPAC)的分子,利用其在不同微环境下独特的激发态构象响应能够监测体系内的微观动态变化.在甲基丙烯酸甲酯(MMA)聚合过程中,体系从液态单体逐渐转变为固态聚合物.伴随这一过程,DPAC的荧光从红色转变为蓝色,反映了局部黏度增加与分子运动受限;随后,磷光逐渐增强且寿命延长,表明聚合物网络刚性逐步上升.通过基于比率荧光与磷光的双通道监测,该策略实现了本体聚合过程的可视化追踪.