Oxidation promoted self-assembly of π-conjugated polymers.

Chemical Science
Garion HicksDwight S Seferos

Abstract

Self-assembly is an attractive strategy for organizing molecules into ordered structures that can span multiple length scales. Crystallization Driven Self-Assembly (CDSA) involves a block copolymer with a crystallizable core-forming block and an amorphous corona-forming block that aggregate into micelles with a crystalline core in solvents that are selective for the corona block. CDSA requires core- and corona-forming blocks with very different solubilities. This hinders its use for the self-assembly of purely π-conjugated block copolymers since blocks with desirable optoelectronic properties tend to have similar solubilities. Further, this approach is not readily reversible, precluding stimulus-responsive assembly and disassembly. Here, we demonstrate that selective oxidative doping of one block of a fully π-conjugated block copolymer promotes the self-assembly of redox-responsive micelles. Heteroatom substitution in polychalcogenophenes enables the modulation of the intrinsic polymer oxidation potential. We show that oxidized micelles with a narrow size distribution form spontaneously and disassemble in response to a chemical reductant. This method expands the scope of π-conjugated polymers that can undergo controlled self-as...Continue Reading

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Citations

Jun 5, 2021·Advanced Materials·Garion E J HicksDwight S Seferos
Jun 25, 2021·Chemical Science·Liam MacFarlaneIan Manners
Aug 19, 2020·ACS Applied Materials & Interfaces·Henry OpokuJea Woong Jo
Jul 1, 2020·Journal of the American Chemical Society·Huda ShaikhIan Manners
Aug 14, 2020·Journal of the American Chemical Society·Tomoya FukuiIan Manners
Dec 3, 2021·Inorganic Chemistry·Harrison A MillsAlexander M Spokoyny

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Methods Mentioned

BETA
Infrared Absorption Spectroscopy
Dynamic Light Scattering
Scanning Transmission Electron Microscopy
AFM
Atomic Force Microscopy
X-ray
NMR
column chromatography

Software Mentioned

KPFM
CDSA
ImageJ

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