Straightforward Synthesis of Conjugated Block Copolymers by Controlled Suzuki-Miyaura Cross-Coupling Polymerization Combined with ATRP

被引：13

作者：

Huber, Steffen ^{[1
]}

Mecking, Stefan ^{[1
]}

机构：

[1] Univ Konstanz, Dept Chem, Chair Chem Mat Sci, Univ Str 10, D-78464 Constance, Germany

来源：

MACROMOLECULES | 2019年 / 52卷 / 15期

关键词：

TRANSFER RADICAL POLYMERIZATION; CHAIN-GROWTH POLYMERIZATION; LIGHT-EMITTING-DIODES; PHOSPHONIC-ACIDS; MOLECULAR-WEIGHT; POLYFLUORENE; POLYTHIOPHENE; POLY(3-HEXYLTHIOPHENE); FUNCTIONALIZATION; TRANSPORT;

D O I：

10.1021/acs.macromol.9b01165

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Catalytic chain growth Suzuki-Miyaura polymerization of an AB-fluorene monomer using isolated (Ini1) or in situ generated (Ini2) Phos-Ph-Pd((Bu3P)-Bu-t)Br as an initiator afforded well-defined heterodifunctional polyfluorenes featuring a phosphonate group (initiating chain end) and a radically polymerizable (Phos-PF8-Sty) or atom transfer radical polymerization (ATRP)-initiating (Phos-PF8-AlkylBr) group (terminating chain end). The resulting Phos-PF8-AlkylBr polymer was directly employed for the growth of a second nonconjugated block by controlled activators regenerated by electron transfer ATRP without the need for further intermediate conversion steps. The PF8 macroinitiator was found to be a viable initiator for the generation of narrowly distributed diblock copolymers with a controlled block length of PF8 and polystyrene, poly(methyl methacrylate), or poly(2-ethylhexyl methacrylate), respectively. Novel conjugated nonconjugated comb polymers were generated by controlled radical copolymerization of PF8 macromonomers, bearing a styrene end group, with styrene or methacrylates. Thereby, it was possible to tune the number of phosphonate moieties per chain between 2 and 15.

引用

页码：5917 / 5924

页数：8