ROMP-ATRP Block Copolymers Prepared from Monotelechelic Poly(oxa)norbornenes Using a Difunctional Terminating Agent
ROMP-ATRP Block Copolymers Prepared from Monotelechelic Poly(oxa)norbornenes Using a Difunctional Terminating Agent
复制标题
使用双官能封端剂由单远爪聚(氧杂)降冰片烯制备ROMP-ATRP嵌段共聚物
DOI：
--
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
R. Grubbs
中科院分区：
文献类型：
--
作者：
John B. Matson;R. Grubbs
将ROMP与ATRP相结合，制备了新型嵌段共聚物。以快速引发催化剂(H_2IMES)(Cl)_2(PYR)_2RuCHPh和(Z)-正丁烯-1，4-二(2-溴丙酸)酯为终止剂，合成了三种不同的单电子聚(氧)降冰片烯。在CuBr/PMDETA催化体系下，以聚(氧)降冰片烯为原料，对苯乙烯和丙烯酸叔丁酯的ATRP反应进行了末端官能化研究。凝胶渗透色谱(GPC)显示没有残留的均聚物，所有嵌段共聚物都具有匹配的理论和观察的相对分子质量和低的多分散性。
Novel block copolymers were prepared by combining ROMP and ATRP. Using the fast initiating ruthenium metathesis catalyst (H_2IMes)(Cl)_2(pyr)_2RuCHPh and (Z)-but-2-ene-1,4-diyl bis(2-bromopropanoate) as a terminating agent, three different monotelechelic poly(oxa)norbornenes were synthesized. Complete end-functionalization was shown by carrying out the ATRP of styrene and tert-butyl acrylate from the poly(oxa)norbornenes using a CuBr/PMDETA catalyst system. GPC showed no remaining homopolymer, and all block copolymers were found to have matching theoretical and observed molecular weights and low polydispersities.