Mesoporous Bragg stack color tunable sensors

被引：239
作者：
Choi, Sung Yeun
Mamak, Marc
von Freymann, Georg
Chopra, Naveen
Ozin, Geoffrey A.
机构：
[1] Univ Toronto, Dept Chem, Mat Chem Res Grp, Toronto, ON M5S 3H6, Canada
[2] Forschungszentrum Karlsruhe, Inst Nanotechnol, Helmholtz Gemeinschaft, D-76021 Karlsruhe, Germany
[3] Xerox Res Ctr Canada Ltd, Mississauga, ON L5K 2L1, Canada
来源：
NANO LETTERS | 2006年 / 6卷 / 11期
关键词：
D O I：
10.1021/nl061580m
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Herein we report a novel self-assembly synthesis, structural and optical characterization of mesoporous Bragg stacks (MBS) composed of spin-coated multilayer stacks of mesoporous TiO2 and mesoporous SiO2. Investigation of the optical response of MBS to the infiltration of alcohols and alkanes into its pores reveals better sensitivity and selectivity than conventional Bragg reflectors. Furthermore, we demonstrate that the chemical sensing ability can be tuned via layer thickness, composition and surface properties.
引用
收藏
页码：2456 / 2461
页数：6
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