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Graphene Functionalized with Azo Polymer Brushes: Surface‐Initiated Polymerization and Photoresponsive Properties
Author(s) -
Wang Dongrui,
Ye Gang,
Wang Xiaolin,
Wang Xiaogong
Publication year - 2011
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201003653
Subject(s) - materials science , graphene , polymer , polymerization , doping , diffraction , surface modification , chemical engineering , nanotechnology , polymer chemistry , optoelectronics , optics , composite material , physics , engineering
Azo polymer brushes (G‐PCN) on graphene nanosheets are prepared through a “grafting‐from” approach. The effect of the graphene nanosheets on photoinduced surface modulation is investigated by irradiating solid films of azo molecular glass (Tr‐Az‐CN) containing the nanosheets with interfering Ar + laser beams. By formation of a surface‐relief grating, a very significant increase in the growth rate and saturated value of the diffraction efficiency is observed for Tr‐Az‐CN doped with G‐PCN at very low content (0.5 wt%).