Synthesis of poly(3-hexylthiophene)- block -poly(phenylisocyanide) copolymers and their self-assembly in solution

Self-assembly of block copolymers (BCPs) is a widely utilized method to prepare different kinds of nano-objects in solution. Herein, poly(3-hexylthiophene)- block -poly(phenylisocyanide) (P3HT- b -PPI) copolymers were synthesized via nickel-catalyzed living polymerization, and 3-phenylpropyl l -vali...

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Bibliographic Details
Published in:Polymer chemistry 2022-11, Vol.13 (46), p.6361-6368
Main Authors: Wang, Xiao-Juan, Li, Gao-Wei, Mo, Ming-Yang, Shi, Shuai-Hua, Li, Si-Yu, Liu, Xin-Yi, Liu, Lan-Tao
Format: Article
Language:English
Subjects:
Block copolymers
Chemical synthesis
Circular polarization
Infrared spectroscopy
Liquid crystals
Microscopy
Nanofibers
NMR
Nuclear magnetic resonance
Optical properties
Polymer chemistry
Self-assembly
Valine
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Summary:Self-assembly of block copolymers (BCPs) is a widely utilized method to prepare different kinds of nano-objects in solution. Herein, poly(3-hexylthiophene)- block -poly(phenylisocyanide) (P3HT- b -PPI) copolymers were synthesized via nickel-catalyzed living polymerization, and 3-phenylpropyl l -valinate of the second PPI block was successfully introduced into the P3HT-based backbone as verified by NMR, FT-IR spectroscopy and SEC analysis. The self-assembly behaviour of these block copolymers was thoroughly explored via a combination of atomic force microscopy (AFM), transmission electron microscopy (TEM) and other optical property measurements in the new polymeric system. Various polymer nano-assemblies with three main morphologies from spheres and short rods to nanofibers were obtained, and the existence of valine-based 3-phenylpropyl attachments endues the block copolymer with the ability to accomplish judicious self-assembling processes. Moreover, these readily-synthesised and assembled π-conjugated copolymers are valuable scaffolds for the potential usage of circularly polarised luminescence and liquid crystalline alignment medium.
ISSN:1759-9954
1759-9962
DOI:10.1039/D2PY01111E