Acenaphtho[1,2-b]quinoxaline based low band gap copolymers for organic thin film transistor applications

Siram, Raja Bhaskar Kanth and Smith, Jeremy and Anthopoulos, Thomas D and Patil, Satish (2012) Acenaphtho[1,2-b]quinoxaline based low band gap copolymers for organic thin film transistor applications. In: Journal of Materials Chemistry, 22 (10). pp. 4450-4458.

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Abstract

We report the synthesis of a novel class of low band gap copolymers based on anacenaphtho[1,2-b]quinoxaline core and oligothiophene derivatives acting as the acceptor and the donor moieties, respectively. The optical properties of the copolymers were characterized by ultraviolet-visible spectroscopy while the electrochemical properties were determined by cyclic voltammetry. The band gap of these polymers was found to be in the range 1.8-2.0 eV as calculated from the optical absorption band edge. X-ray diffraction measurements show weak pi-pi stacking interactions between the polymer chains. The hole mobility of the copolymers was evaluated using field-effect transistor measurements yielding values in the range 10(-5)-10(-3) cm(2)/Vs.

Item Type:	Journal Article
Publication:	Journal of Materials Chemistry
Publisher:	Royal Society of Chemistry
Additional Information:	Copyright of this article belongs to Royal Society of Chemistry.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	18 Apr 2012 05:21
Last Modified:	18 Apr 2012 05:21
URI:	http://eprints.iisc.ac.in/id/eprint/44315

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