Polymer Dispersity Control by Organocatalyzed Living Radical Polymerization

Angewandte Chemie
Xu LiuAtsushi Goto

Abstract

Molecular weight distribution of polymers, termed dispersity (Đ), is a fundamental parameter for determining polymer material properties. This paper reports a novel approach for controlling Đ by exploiting a temperature-selective radical generation in organocatalyzed living radical polymerization. The polymers with tailored Đ were synthesized in a batch system without the assistance of an external pump. A unique aspect of this approach is that Đ was tuneable from 1.11 to 1.50 in any segment in diblock, triblock, and multiblock copolymers and in any form of star and brush polymer without segmental or topological restriction. This approach is amenable to various monomers and free from metals and thus attractive for applications. The approach also generated polymer brushes on surfaces with tailored Đ. An interesting finding was that the polymer brushes exhibited unique interaction with external molecules, depending on the Đ value.

References

Jan 28, 2012·Journal of the American Chemical Society·Joan M WidinMahesh K Mahanthappa
Apr 25, 2014·Journal of the American Chemical Society·Krzysztof Matyjaszewski, Nicolay V Tsarevsky
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Mar 28, 2018·Advanced Materials·Krzysztof Matyjaszewski

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Citations

Jun 18, 2019·Soft Matter·Amrita SarkarMorgan Stefik
Feb 1, 2020·Macromolecular Rapid Communications·Yicen GeAtsushi Goto
Jun 17, 2021·Angewandte Chemie·Richard WhitfieldAthina Anastasaki
Jun 10, 2020·ACS Applied Materials & Interfaces·Xuan Ming SimAtsushi Goto

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