Internally referenced ammonia sensor based on an electrochemically prepared porous SiO2 photonic crystal

被引：53
|
作者：
King, Brian H. [1 ]
Gramada, Andrei [1 ]
Link, Jamie R. [1 ]
Sailor, Michael J. [1 ]
机构：
[1] Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA
来源：
ADVANCED MATERIALS | 2007年 / 19卷 / 22期
关键词：
D O I：
10.1002/adma.200602860
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
An oxidized porous silicon photonic crystal possessing two reflectance peaks is infused with bromothymol blue, yielding a pH-responsive ammonia vapor sensor. One reflectance peak overlaps the absorbance band of the deprotonated dye while the other appears in a "clear" spectral region. Simultaneous monitoring of both reflectance peaks corrects for large changes in probe light intensity.
引用
收藏
页码：4044 / +
页数：6
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