Journal article

Improved compatibility of DDAB-functionalized graphene oxide with a conjugated polymer by isocyanate treatment

Fei Zheng, Xiao-Yu Yang, Peng-Qing Bi, Meng-Si Niu, Cheng-Kun Lv, Lin Feng, Xiao-Tao Hao, Kenneth P Ghiggino

RSC Advances | Royal Society of Chemistry | Published : 2017

Abstract

2-Chlorophenyl isocyanate (CI) reacts with didodecyl dimethyl ammonium bromide (DDAB) functionalized graphene oxide (DDAB-GO) dispersed in ortho-dichlorobenzene under mild conditions. The CI treatment complements DDAB functionalization to further decrease the hydrophilicity of pristine GO sheets. The resulting CI–DDAB-GO exhibits improved compatibility with the conjugated polymer poly(3-hexylthiophene) (P3HT), compared to DDAB-GO. CI–DDAB-GO sheets can be homogeneously dispersed when blended with P3HT, resulting in an improved morphology compared to P3HT:DDAB-GO composites. The incorporation of CI–DDAB-GO can effectively reduce the dark current of photo-diodes based on P3HT composites, showi..

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Grants

Awarded by National Natural Science Foundation of China


Awarded by Research Fund for the Doctoral Program of Higher Education


Funding Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 11574181); Research Fund for the Doctoral Program of Higher Education (Grant No. 20130131110004); the Fundamental Research Funds of Shandong University; Open Research Fund of State Key Laboratory Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; and the "National Young 1000 Talents" Program of China. Support from the University of Melbourne International Research and Research Training Fund (IRRTF) is acknowledged.