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Controlling the Thermoelectric Properties of Organometallic Coordination Polymers via Ligand Design

Liu, Z; Liu, T; Savory, CN; Jurado, JP; Reparaz, JS; Li, J; Pan, L; ... Schroeder, BC; + view all (2020) Controlling the Thermoelectric Properties of Organometallic Coordination Polymers via Ligand Design. Advanced Functional Materials , Article 2003106. 10.1002/adfm.202003106. Green open access

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Abstract

Organometallic coordination polymers (OMCPs) are a promising class of thermoelectric materials with high electrical conductivities and thermal resistivities. The design criteria for these materials, however, remain elusive and so far material modifications have been focused primarily on the nature of the metal cation to tune the thermoelectric properties. Herein, an alternative approach is described by synthesizing new organic ligands for OMCPs, allowing modulation of the thermoelectric properties of the novel OMCP materials over several orders of magnitude, as well as controlling the polarity of the Seebeck coefficient. Extensive material purification combined with spectroscopy experiments and calculations furthermore reveal the charge‐neutral character of the polymer backbones. In the absence of counter‐cations, the OMCP backbones are composed of air‐stable, ligand‐centered radicals. The findings open up new synthetic possibilities for OMCPs by removing structural constraints and putting significant emphasis on the molecular structure of the organic ligands in OMCP materials to tune their thermoelectric properties.

Type: Article
Title: Controlling the Thermoelectric Properties of Organometallic Coordination Polymers via Ligand Design
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/adfm.202003106
Publisher version: https://doi.org/10.1002/adfm.202003106
Language: English
Additional information: Copyright © 2020 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Keywords: coordination polymer, hybrid thermoelectric materials, organometallic chemistry, Seebeck coefficient, thermal conductivity
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10100187
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