Poly(3-hexylthiophene) based block copolymers prepared by "click" chemistry
Poly(3-hexylthiophene) based block copolymers prepared by "click" chemistry
复制标题
DOI：
10.1021/ma800659a
复制
发表时间：
2008-09
期刊：
影响因子：
5.5
通讯作者：
M. Urien;Harikrishna Erothu;É. Cloutet;R. Hiorns;L. Vignau;H. Cramail
中科院分区：
文献类型：
--
作者：
M. Urien;Harikrishna Erothu;É. Cloutet;R. Hiorns;L. Vignau;H. Cramail
以末端叠氮官能化的聚苯乙烯（PS）和末端炔官能化的聚（3-己基噻吩）（P3 HT）为原料，通过铜（I）催化的Huisgen [3 + 2]偶极环加成反应，制备了π共轭嵌段共聚物。采用原子转移自由基聚合法合成了α-叠氮基-PS均聚物，并采用炔基Grignard衍生物进行了ω-乙炔基-P3 HT和α，ω-戊炔基-P3 HT的合成。炔基端基的电子环境被证明是决定性的，在确定三唑环的形成。
π-Conjugated block copolymers have been prepared from terminal azide functionalized polystyrenes (PS) and alkyne functionalized poly(3-hexylthiophene)s (P3HT) via a copper(I) catalyzed Huisgen [3 + 2] dipolar cycloaddition reaction. The functionalized α-azido-PS homopolymer was prepared by atom transfer radical polymerization from a specifically designed initiator bearing the azide function, whereas ω-ethynyl-P3HT and α,ω-pentynyl-P3HT were synthesized by a modified Grignard metathesis polymerization using alkynyl Grignard derivatives. The electronic environment of the alkynyl end groups was shown to be decisive in determining triazole ring formation.