Photoinduced controlled radical polymerization of methacrylates with benzaldehyde derivatives as organic catalysts
Photoinduced controlled radical polymerization of methacrylates with benzaldehyde derivatives as organic catalysts
复制标题
以苯甲醛衍生物为有机催化剂的甲基丙烯酸酯的光诱导受控自由基聚合
DOI：
10.1039/c7py00408g
复制
发表时间：
2017-06
影响因子：
4.6
通讯作者：
Yang Wantai
中科院分区：
文献类型：
--
作者：
Ma Wenchao;Zhang Xianhong;Ma Yuhong;Chen Dong;Wang Li;Zhao Changwen;Yang Wantai
以23 W紧凑型荧光灯为光源，N，N-二甲基苯胺为还原剂，全氟碘己烷为引发剂，苯甲醛衍生物对茴香醛、对氰基苯甲醛和2，4-二甲氧基苯甲醛为有机光催化剂，进行了甲基丙烯酸酯的光引发可控自由基聚合反应.在优化条件下，分子量随单体转化率呈线性变化。此外，成功的扩链反应是通过一锅法和与所制备的聚合物作为大分子引发剂。具体地，通过使用PPEGMA-I（Mn，GPC = 10200 g mol-1，PDI = 1.33）作为大分子引发剂和对茴香醛作为有机催化剂，实现了具有高分子量和相对窄的分子量分布（Mn，GPC = 44000 g mol-1，PDI = 1.54）的PPEGMA（转化率= 85%）的一锅法合成。 虽然目前的技术表现出一定程度上较低的可控性制备嵌段共聚物，与常见的ATRP和RAFT聚合方法相比，它提供了一个有前途的替代作为一个无金属的有机催化的光诱导ATRP的变体。
A photo-induced controlled radical polymerization of methacrylates with perfluoro-1-iodohexane as an initiator and benzaldehyde derivatives, including p-anisaldehyde, p-cyanobenzaldehyde and 2,4-dimethoxy benzaldehyde, as organic photocatalysts is demonstrated by using 23 W compact fluorescent lamps as the light source in the presence of a potential reductant N,N-dimethylaniline. Linear evolution of the molecular weight with monomer conversion is observed under the optimized conditions. Additionally, successful chain extension reactions are obtained by a one-pot process and with the as-prepared polymers as macroinitiators. Specifically, the one-pot synthesis of PPEGMA (conversion = 85%) with a high molecular weight and relatively narrow molecular weight distribution (Mn,GPC = 44 000 g mol−1, PDI = 1.54) is achieved by using PPEGMA-I (Mn,GPC = 10 200 g mol−1, PDI = 1.33) as a macroinitiator and p-anisaldehyde as an organocatalyst. Although the current technology exhibits a somewhat low controllability for preparing block copolymers, compared with the common ATRP and RAFT polymerization process, it offers a promising alternative as a metal-free organo-catalyzed photo-induced variant of ATRP.
登录
查看更多内容
影响因子：
8.4
作者：
Shanmugam S;Xu J;Boyer C
通讯作者：
Boyer C
Cu(dap)(2)Cl作为光氧化还原催化剂的可见光诱导甲基丙烯酸酯受控自由基聚合
影响因子：
4.6
作者：
Ma Wenchao;Chen Dong;Ma Yuhong;Wang Li;Zhao Changwen;Yang Wantai
通讯作者：
Yang Wantai
DOI：
10.1002/pola.27390
发表时间：
2014-11
期刊：
Journal of Polymer Science Part A
影响因子：
--
作者：
Qian Liu;Lianying Liu;Yuhong Ma;Changwen Zhao;Wantai Yang
通讯作者：
Qian Liu;Lianying Liu;Yuhong Ma;Changwen Zhao;Wantai Yang
影响因子：
15
作者：
S. Yamago;Yuu Ukai;A. Matsumoto;Yasuyuki Nakamura
通讯作者：
S. Yamago;Yuu Ukai;A. Matsumoto;Yasuyuki Nakamura
影响因子：
7.015
作者：
Konkolewicz, Dominik;Schroeder, Kristin;Matyjaszewski, Krzysztof
通讯作者：
Matyjaszewski, Krzysztof