Issue 14, 2013
From the journal:

RSC Advances

Structure control of ultra-large graphene oxide sheets by the Langmuir–Blodgett method†

Qingbin Zheng,a   Lifang Shi,a   Peng-Cheng Ma,b   Qingzhong Xue,c   Jing Li,a   Zhihong Tanga  and  Junhe Yang*a  

* Corresponding authors

a School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
E-mail: jhyang@usst.edu.cn
Tel: 86-021-55274065

b The Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China

c State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, China

Abstract

As a unique type of soft building block, graphene oxide (GO) dispersions are easy to process to produce electronic devices. Developing methods to produce large sized GO with controllable structure is the key for these applications. Here, ultra-large graphene oxide (UL-GO) sheets (up to ∼100 μm in lateral size) were produced in aqueous media and deposited onto substrates with controllable structure, including flat, rippled, standing collapsed, folded, over folded, highly curved, and scrolled morphologies, via the Langmuir–Blodgett (L–B) technique. The MD simulations show that the GO becomes much softer than pristine graphene sheets due to the sp3-hybridization caused by oxygen containing functional groups and this is the reason why a series of distinct structures were observed. To demonstrate the fabrication of a transparent conductor, the close-packed flat UL-GO films on poly(ethylene terephthalate) (PET) were reduced with a low-temperature chemical reduction process in a hydriodic (HI) acid aqueous solution, achieving a sheet resistance as low as 8.1 kΩ/sq with 90% transparency.

Graphical abstract: Structure control of ultra-large graphene oxide sheets by the Langmuir–Blodgett method

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Article information

DOI
https://doi.org/10.1039/C3RA22367A
Article type
Paper
Submitted
02 Oct 2012
Accepted
14 Jan 2013
First published
16 Jan 2013

RSC Adv., 2013,3, 4680-4691

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Structure control of ultra-large graphene oxide sheets by the Langmuir–Blodgett method

Q. Zheng, L. Shi, P. Ma, Q. Xue, J. Li, Z. Tang and J. Yang, RSC Adv., 2013, 3, 4680 DOI: 10.1039/C3RA22367A

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