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Enhanced Optical Nonlinearity in Noncovalently Functionalized Amphiphilic Graphene Composites

  1. Tingchao He1,
  2. Dr. Xiaoying Qi2,
  3. Rui Chen1,
  4. Dr. Jun Wei2,
  5. Prof. Hua Zhang3,*,
  6. Prof. Handong Sun1,*

Article first published online: 10 JUL 2012

DOI: 10.1002/cplu.201200113

Issue

ChemPlusChem

ChemPlusChem

Special Issue: Board Members Issue

Volume 77, Issue 8, pages 688–693, August 2012

Additional Information

How to Cite

He, T., Qi, X., Chen, R., Wei, J., Zhang, H. and Sun, H. (2012), Enhanced Optical Nonlinearity in Noncovalently Functionalized Amphiphilic Graphene Composites. ChemPlusChem, 77: 688–693. doi: 10.1002/cplu.201200113

Author Information

  1. 1

    Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore)

  2. 2

    Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, Singapore 638075 (Singapore)

  3. 3

    School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore) http://www.ntu.edu.sg/home/hzhang/

*School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore) http://www.ntu.edu.sg/home/hzhang/

Publication History

  1. Issue published online: 9 AUG 2012
  2. Article first published online: 10 JUL 2012
  3. Manuscript Received: 14 MAY 2012

Funded by

  • Singapore Ministry of Education. Grant Number: RG63/10
  • Singapore National Research Foundation. Grant Number: NRF-CRP5–2009–04
  • Singapore Ministry Of Education. Grant Number: MOE2010-T2–1–060
  • Singapore National Research Foundation
  • Nanyang Technological University. Grant Number: M4080865.070.706022

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Keywords:

  • composites;
  • graphene;
  • nonlinear optics;
  • polymers

Abstract

The good solubility of graphene-based materials in various solvents without sacrificing their intrinsic properties is a prerequisite for their further applications. In particular, it is important for application as a practical optical limiter. A comprehensive study was conducted on the nonlinear optical property of a rationally designed amphiphilic graphene composite (PEG-OPE-rGO). By taking advantages of the unique energy diagram of this graphene composite, the optical limiting (OL) performances of PEG-OPE-rGO, which is either dissolved in solvents with moderate polarity or fabricated into thin solid films, are beyond the reported results for other graphene composites. Importantly, the main factors for the enhanced OL response of PEG-OPE-rGO are the multiphoton absorption and Förster resonance energy transfer process, instead of the nonlinear scattering mechanism observed for common nanostructured materials. The excellent OL response of PEG-OPE-rGO allows it to be one of the best candidates in practical optical limiters. Moreover, the mechanism analysis provides the deep insight for further optimization of the design of promising OL materials.

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