A water-soluble pH-responsive molecular brush of poly(N,N-dimethylaminoethyl methacrylate) grafted polythiophene

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DOI	Resolve DOI: https://doi.org/10.1021/ma800777m
Author	Search for: Wang, Mingfeng; Search for: Zou, Shan; Search for: Guerin, Gerald; Search for: Shen, Lei; Search for: Deng, Kangqing; Search for: Jones, Marcus; Search for: Walker, Gilbert C.; Search for: Scholes, Gregory D.; Search for: Winnik, Mitchell A.
Format	Text, Article
Abstract	We report the synthesis of a new polythiophene (PT)-based molecular brush (PT-g-PDMA) by growing poly(N,N-dimethylaminoethyl methacrylate) (PDMA) chains from the PT backbone by ATRP. The polymer shows a reversible pH response in aqueous solution. A combination of AFM, light scattering, and ¹H NMR measurements indicated that the polymer brush forms a more extended conformation with a decrease in pH from 8 to 2 due to the protonation of the Me₂N− groups and increased repulsive interactions among the PDMA side chains, which drives the red shift of the absorption and PL spectra of the PT backbone. The good solubility of this polythiophene-based brush in a wide range of solvents is attractive for the fabrication of functional polymer composites.
Publication date	2008-09-04
Publisher	American Chemical Society
In	Macromolecules 41, no. 19: 6993–7002.
Language	English
Peer reviewed	Yes
NRC publication	This is a non-NRC publication "Non-NRC publications" are publications authored by NRC employees prior to their employment by NRC.
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Record identifier	f47646d5-7a25-4e3b-a139-cd1c9e7848be
Record created	2019-04-25
Record modified	2020-05-30

Date modified:: 2025-12-16