期刊
ACS MACRO LETTERS
卷 11, 期 6, 页码 780-784出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsmacrolett.2c00248
关键词
-
资金
- NSF [CMMI 19-33932]
- Department of Defense
The development of a photo-redox-initiated frontal ring-opening metathesis polymerization (FROMP) chemical system is reported. This system provides a well-controlled reaction front and extended pot life.
Herein, we report the development of a photo-redox-initiated frontal ring-opening metathesis polymerization (FROMP) chemical system. We found that a ruthenium-based, bis-N-heterocyclic carbene metathesis precatalyst was activated with 9-mesityl-10-phenylacridindium tetrafluoroborate, copper(II) triflate, and a 455 nm light source. This chemistry was used to initiate the FROMP of dicyclopentadiene; once initiated, the heat released from the polymerization sustained a well-controlled reaction front. Variation in copper or metathesis precatalyst loading yielded front speeds ranging from 0.15 to 0.43 mm s(-1) and front temperatures ranging from 140 to 205 degrees C. While the glass transition temperatures of the resultant polymers are lower than those derived with Grubbs' second-generation catalyst, this chemical system provides extended pot life.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据