A reversible, colorimetric, pH-responsive indole-based hydrogel and its application in urea detection

被引：12
|
作者：
Wang, Yan [1 ]
Luo, Xuan [1 ]
Zhang, Longfei [1 ]
Zhang, Shuai [1 ]
Zhang, Lin [1 ]
机构：
[1] China Acad Engn Phys, Res Ctr Laser Fus, Mianyang 621900, Sichuan, Peoples R China
来源：
RSC ADVANCES | 2019年 / 9卷 / 42期
关键词：
CATION-PI INTERACTIONS; TRYPTOPHAN INTERACTION; RHEOLOGICAL PROPERTIES; RATIONAL DESIGN; NANOPARTICLES; POLYMER; GLUCOSE; LAYER; COLOR; ASSAY;
D O I：
10.1039/c9ra03815a
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A new type of pH-responsive indole-based (4-HINF) hydrogel, fabricated by a sol-gel method, was utilized as a platform for colorimetric detection of urea in aqueous solution. The colorimetric sensor was established by virtue of the synergistic effect of cation-pi interaction and hydrogen bonding with good regenerative ability. The results exhibited linear response in the range of 0-10 mM with a limit of detection of 10 mu M. The prepared 4-HINF hydrogel possessed high selectivity to pH change under complicated environments ensuring further applications in environmental and bio-systems.
引用
收藏
页码：24299 / 24304
页数：6
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