Jump to main content
Jump to site search

Issue 10, 2012
Previous Article Next Article

Facile fabrication of graphene devices through metalloporphyrin induced photocatalytic reduction

Author affiliations

Abstract

Solution processed graphene oxide (GO) sheets are electronically insulating and are generally reduced by chemical treatment or heat treatment in a reducing environment to recover their electronic properties, forming reduced graphene oxide (rGO). Here, GO sheets were photocatalytically reduced using 5-(4-hydroxyphenyl)-10,15,20-tri(p-tolyl) zinc(II) porphyrin (Zn(II)TTPOH) under ambient conditions. After illumination in the presence of a hole scavenger and Zn(II)TTPOH, the formation of rGO was confirmed through optical absorption measurements and monitoring of the D/G peak ratios from Raman measurements. The resultant rGO formed stable aqueous suspensions with the Zn(II)TTPOH. The electron transfer from photoexcited porphyrin to GO was studied through photoluminescence measurements. Utilising this photoreduction process as a post processing strategy, an increase in conductivity and an ambipolar field effect transistor (FET) behaviour were demonstrated on prepatterned GO devices. We have also confirmed the photoreduction process at low energy wavelengths (588 nm), indicating the versatility of using metalloporphyrins as photocatalysts for graphene oxide reduction.

Graphical abstract: Facile fabrication of graphene devices through metalloporphyrin induced photocatalytic reduction

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 26 Sep 2011, accepted on 13 Feb 2012 and first published on 19 Mar 2012


Article type: Paper
DOI: 10.1039/C2RA00792D
Citation: RSC Adv., 2012,2, 4120-4124
  •   Request permissions

    Facile fabrication of graphene devices through metalloporphyrin induced photocatalytic reduction

    M. A. Khaderbad, V. Tjoa, T. Z. Oo, J. Wei, M. Sheri, R. Mangalampalli, V. R. Rao, S. G. Mhaisalkar and N. Mathews, RSC Adv., 2012, 2, 4120
    DOI: 10.1039/C2RA00792D

Search articles by author