A highly selective colorimetric sensor for cysteine and homocysteine based on a new photochromic diarylethene

作者：Zheng, Chunhong; Pu, Shouzhi^*; Liu, Gang; Chen, Bing; Dai, Yanfeng

来源：Dyes and Pigments, 2013, 98(2): 280-285.

DOI：10.1016/j.dyepig.2013.02.022

• Photochromism
• Diarylethene
• Colorimetric sensor
• Cysteine/homocysteine
• Molecule recognition
• High selectivity

A new photochromic diarylethene with a formyl group, 1-(2-cyano-1,5-dimethyl-4-pyrryl)-2-(2-methyl-5-formyl-3-thienyl)perfluorocyclopentene,has been synthesized. The interaction between the formyl group of its ring-closed isomer with cysteine/homocysteine caused a notable change in its absorption spectrum, accompanied by an evident color change from blue to pale yellow upon addition of cysteine/homocysteine. Moreover, the competition tests revealed that no obvious interference was observed by performing the titrations with the mixtures of cysteine/homocysteine and other amino acids. The results indicated that the diarylethene could be used as a colorimetric sensor for the recognition of cysteine/homocysteine with high selectivity.

• 出版日期2013-8
• 单位江西科技师范大学; 南昌大学