文献类型：期刊文献

英文题名：Synthesis of Novel "Rod-Coil" Brush Polymers with Conjugated Backbones through Bergman Cyclization

作者：Cheng, Xin[1];Ma, Jianguo[1];Zhi, Jian[1];Yang, Xi[1];Hu, Aiguo[1]

机构：[1]E China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2010

卷号：43

期号：2

起止页码：909

外文期刊名：MACROMOLECULES

收录：;EI(收录号：20100412665773);WOS:【SCI-EXPANDED(收录号:WOS:000273618100042)】；

基金：We thank National Natural Science Foundation of China (No. 20874026; No. 20704013), Shanghai Pujiang Program (07PJ14024), Shuguang Project (07SG33), New Century Excellent Talents in University, and Shanghai Leading Academic Discipline Project (B502) for financial support.

语种：英文

外文关键词：Conjugated polymers - Dendrimers - Cyclization - Monomers - Ultraviolet visible spectroscopy - Naphthalene

摘要：This work reports synthesis of "rod-coil" brush polymers with rigid conjugated backbone. "Grafting through" strategy was employed via combination of ring-opening polymerization (ROP) and Bergman cyclization polymerization. Enediyne-containing macromonomers were first synthesized through ROP of caprolactone with dual-functional initiators conceiving free hydroxy groups and dialkynylbenzene moieties. After protection of terminal free hydroxy group of PCL chain and removal of trimethylsilyl protecting group of enediyne unit, the macromonomers were subjected to thermal Bergman cyclization under vacuum. The brush polymers obtained were characterized with GPC and NMR, IR, and UV-vis spectroscopy. The conjugated backbones were revealed as copolymers of naphthalene and indenylmethylene according to NMR analysis.