Issue 38, 2011

Graphenenanosheets deposited on polyurethane films by self-assembly for preparing transparent, conductive films

Abstract

This study prepared graphene nanosheet (GNS)-based transparent, conductive films (TCFs) by a self-assembly method. We used the water-borne polyurethane (WPU, with sulfonate functional groups) film as the substrate. Aggregation and restacking of the GNS were inhibited efficiently by attracting the octadecyl trimethyl ammonium chloride surfactant (cationic surfactant) to the surface of the GNS (GNS-O), which can in turn attract sulfonate groups to the WPU surface. The GNS-O was deposited on WPU to form TCFs. We obtained highly transparent and electrically conductive thin films after treatment with nitric acid (GNS-OA). The GNS-OA composite films showed a maximum sheet electrical resistance of 1.5 × 103 Ω □−1, with a light transmittance of up to 79% and a ratio of DC conductivity to optical conductivity of 0.88.

Graphical abstract: Graphene nanosheets deposited on polyurethane films by self-assembly for preparing transparent, conductive films

Supplementary files

Article information

Article type
Paper
Submitted
14 Apr 2011
Accepted
21 Jul 2011
First published
19 Aug 2011

J. Mater. Chem., 2011,21, 14876-14883

Graphene nanosheets deposited on polyurethane films by self-assembly for preparing transparent, conductive films

H. Tien, Y. Huang, S. Yang, S. Hsiao, J. Wang and C. M. Ma, J. Mater. Chem., 2011, 21, 14876 DOI: 10.1039/C1JM11602A

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