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Photoresponse modulation of reduced graphene oxide by surface modification with cardanol derived azobenzene

Abstract

Abstract.Utilizing organic molecules for tuning the carbon nanomaterials have paved tremendous revolution in the organic electronics especially for developing field effect transistors, memory devices etc.Here we report the influence of insulating photochromic molecule on the conductance behaviour of carbon nanomaterial. The prepared cardanol derived azobenzene functionalized reduced graphene oxide shows phototunable conductance behaviour with the light induced trans-cis isomerisation of azo moiety. The difference in the mode of interaction between the two moieties, i.e. the covalent and non- covalent functionalization of reduced graphene oxide influences the photoconductance behaviour of reduced graphene oxide. The rate constant of photoisomerisation for covalent hybrid is 0.04259and for non-covalent hybrid is 0.04687. Similarly, the photoresponse ratio calculated for the covalent hybrid system is 0.178 and the same for the non-covalent hybrid is 0.571.This clearly implies that non-covalent mode offeres better tuning of photoconductance than the covalent functionalization as the latter can cause a larger restriction in the photo-isomerisation activity of azosystem.The finding promises more development in the area of sustainable molecular electronics.

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Publication details

The article was received on 09 May 2018, accepted on 07 Oct 2018 and first published on 08 Oct 2018


Article type: Paper
DOI: 10.1039/C8NJ02201A
Citation: New J. Chem., 2018, Accepted Manuscript
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    Photoresponse modulation of reduced graphene oxide by surface modification with cardanol derived azobenzene

    M. S, L. C. Lalithabhai, D. R. Kizhisseri , K. Joseph and G. Venugopal, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ02201A

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