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Semiconducting Conjugated Microporous Polymer: An Electrode Material for Photoelectrochemical Water Splitting and Oxygen Reduction

Jayanthi, Swetha and Muthu, D V S and Jayaraman, N and Sampath, S and Sood, A K (2017) Semiconducting Conjugated Microporous Polymer: An Electrode Material for Photoelectrochemical Water Splitting and Oxygen Reduction. In: CHEMISTRYSELECT, 2 (16). pp. 4522-4532.

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Official URL: http://dx.doi.org/10.1002/slct.201700505

Abstract

Intriguing structural design and inherent nanoporosity of conjugated microporous polymers (CMP) with extended pi-conjugation have stimulated research interest in exploring their applications to solve challenging environmental and energy problems. However, only few attempts are made so far to identify the semiconducting properties of these CMP networks having direct relevance to energy conversion, electronic devices and photocatalysis. The present study identifies the semiconducting properties of a conjugated microporous polymer, namely, poly(1,3,5-triethynylbenzene) (PTEB) in detail using photoluminescence, UV-Visible absorption, Kelvin probe force microscopy, cyclic voltammetry, Mott-Schottky analysis and photoelectrochemical studies. Integration of heteroatoms such as nitrogen into the polymer network by post-thermal treatment is shown to enhance significantly the activities towards oxygen reduction reaction. A drastic improvement in the activity of PTEB observed on nitrogen incorporation into the carbon skeleton is attributed to an increase in the number of electrochemical active sites and increase in its pore size. The systematic evaluation of conducting properties of CMP materials promises future development of electronic, electrochemical and photoelectrochemical devices.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the WILEY-V C H VERLAG GMBH, POSTFACH 101161, 69451 WEINHEIM, GERMANY
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Division of Chemical Sciences > Organic Chemistry
Division of Interdisciplinary Research > Centre for Nano Science and Engineering
Division of Physical & Mathematical Sciences > Physics
Depositing User: Id for Latest eprints
Date Deposited: 08 Jul 2017 07:27
Last Modified: 08 Jul 2017 07:27
URI: http://eprints.iisc.ac.in/id/eprint/57326

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