Phototunable Supersoft Elastomers using Coumarin Functionalized Molecular Bottlebrushes for Cell-Surface Interactions Study
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- 作者：Kosuke Mukumoto ; Saadyah E. Averick ; Sangwoo Park ; Alper Nese ; Anastasia Mpoukouvalas ; Yukai Zeng ; Kaloian Koynov ; Philip R. Leduc ; Krzysztof Matyjaszewski
- 刊名：Macromolecules
- 出版年：2014
- 出版时间：November 25, 2014
- 年：2014
- 卷：47
- 期：22
- 页码：7852-7857
- 全文大小：374K
- ISSN：1520-5835
文摘
Phototunable supersoft elastomers were prepared by photo-cross-linking molecular bottlebrushes with poly(n-butyl acrylate) (PBA) side chains. Bottlebrushes were synthesized by atom transfer radical polymerization (ATRP) and Br-chain end functionalities were replaced by photo-cross-linkable coumarin units. Photo-cross-linking and photoscission of molecular bottlebrushes resulted in tunable elastomeric behavior quantified by dynamic mechanical analysis. The cell鈥搒ubstrate interactions, tuned by UV-light, depended on surface morphology and softness that could be as low as several kilopascals.