Label-free and pH-sensitive colorimetric materials for the sensing of urea

Lu Li; Yue Long; Jin-Ming Gao; Kai Song; Guoqiang Yang

doi:10.1039/c5nr07690k

Label-free and pH-sensitive colorimetric materials for the sensing of urea

Nanoscale. 2016 Feb 28;8(8):4458-62. doi: 10.1039/c5nr07690k.

Authors

Lu Li¹, Yue Long², Jin-Ming Gao³, Kai Song², Guoqiang Yang⁴

Affiliations

¹ Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Science, Northwest A&F University, Yangling 712100, China and Laboratory of Bio-Inspired Smart Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China. songkai@mail.ipc.ac.cn.
² Laboratory of Bio-Inspired Smart Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China. songkai@mail.ipc.ac.cn.
³ Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Science, Northwest A&F University, Yangling 712100, China.
⁴ Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.

PMID: 26847584
DOI: 10.1039/c5nr07690k

Abstract

This communication demonstrates a facile method for naked-eye detection of urea based on the structure color change of pH-sensitive photonic crystals. The insertion of urease provides excellent selectivity over other molecules. The detection of urea in different concentration ranges could be realized by changing the molar ratio between the functional monomer and cross-linker.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Colorimetry*
Hydrogen-Ion Concentration
Molecular Imprinting
Photons
Polymers / chemistry
Urea / analysis*
Urease / chemistry
Urease / metabolism

Substances

Polymers
Urea
Urease