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Polymers with advanced structural and supramolecular features through topochemical polymerization

Abstract

Polymers are an integral part of our daily life. Hence, there are constant efforts towards synthesizing novel polymers with unique properties. As the composition and packing of polymer chains influence a polymer's properties, sophisticated control over the molecular and supramolecular structure of the polymer helps tailor its properties as desired. However, such precise control via conventional solution-state synthesis is challenging. Topochemical polymerizations (TP), the solvent- and catalyst-free reactions that occur under the confinement of the crystal lattice, offer profound control over the molecular structure and supramolecular architecture of a polymer and usually result in ordered polymers. In particular, single-crystal-to-single-crystal (SCSC) TP is advantageous as we can correlate the structure and packing of polymer chains with their properties. By designing molecules appended with suitable reactive moieties and utilizing principles of supramolecular chemistry to align them in a reactive orientation, the synthesis of higher-dimensional polymers and divergent topologies has been achieved via TP. Though there are a few reviews on TP in the literature, an exclusive review showcasing the topochemical synthesis of polymers with advanced structural features is not available. In this perspective, we present selected examples on the topochemical synthesis of organic polymers with sophisticated structures like ladders, tubular polymers, alternating copolymers, polymer blends, and other interesting topologies. We also detail some strategies adopted for obtaining distinct polymers from the same monomer. Finally, we highlight the main challenges and prospects for developing advanced polymers via TP and inspire future directions in this area.

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Article information


Submitted
29 Dec 2020
Accepted
22 Feb 2021
First published
23 Feb 2021

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2021, Accepted Manuscript
Article type
Perspective

Polymers with advanced structural and supramolecular features through topochemical polymerization

K. M. Sureshan, K. Hema, C. Raju and A. Ravi, Chem. Sci., 2021, Accepted Manuscript , DOI: 10.1039/D0SC07066A

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