Enhanced Reversible Photoswitching of Azobenzene-Functionalized Graphene Oxide Hybrids

被引：60
作者：
Zhang, Xuequan
Feng, Yiyu
Lv, Peng
Shen, Yongtao
Feng, Wei [1 ]
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China
来源：
LANGMUIR | 2010年 / 26卷 / 23期
基金：
中国国家自然科学基金;
关键词：
CARBON NANOTUBES; FILMS; DEVICES; SHEETS;
D O I：
10.1021/la1037537
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
An enhanced photoinduced reversible switching of graphene oxide-azobenzene (GO-AZO) hybrid was investigated as a highly sensitive photoswitch. The internal short-range ordered crystalline structure of GO-AZO hybrid was advantageous to charge transfer. The AZO moieties on GO underwent a rapid trans-cis photoisomerization upon ultraviolet irradiation due to the electron interaction between AZO and GO. The GO-AZO hybrid film showed an enhanced reversible photoswitching performance with high on/off ratio of 8 and fast response time less than 500 ms. The high sensitivity or GO-AZO switch arises from the intramolecular donor-acceptor architecture with efficient charge transfer.
引用
收藏
页码：18508 / 18511
页数：4
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