Novel color changing pH sensors based on cholesteric polymers

被引：19
|
作者：
Shibaev, Petr V. [1 ]
Sanford, R. Lea [1 ]
Chiappetta, Daniel [1 ]
Rivera, Pierre [1 ]
机构：
[1] Fordham Univ, Dept Phys, Bronx, NY 10458 USA
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2007年 / 479卷
关键词：
amino acids; chiral; cholesteric; color sensors; hydrogen bonds; selective reflection; water;
D O I：
10.1080/15421400701739006
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Color changing cholesteric hydrogen bonded polymer films responding to pH changes induced by basic amino acids or inorganic bases were synthesized and studied. The films with a higher concentration of donor/acceptor groups display a larger shift of the selective reflection band and faster response. This effect is explained in terms of the breakage of hydrogen bonds that occurs between the components of a cholesteric polymer, immersed in various basic aqueous solutions including amino acids.
引用
收藏
页码：1199 / 1205
页数：7
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