Cysteine optical sensing with an up-conversion host and two chemosensors derived from rhodamine: Construction, characterization and performance

详细信息    查看全文

• 作者：Chen Lin ^{anshan_chenlin@163.com} ; Fang Zhigang ; ^{fangzg199@163.com}
• 关键词：Up-conversion nanoparticles ; Rhodamine chemosensor ; Cysteine ; Sensing
• 刊名：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
• 出版年：2017
• 出版时间：5 March 2017
• 年：2017
• 卷：174
• 期：Complete
• 页码：195-202
• 全文大小：1621 K
• 卷排序：174

文摘

Two rhodamine chemosensors for cysteine optical sensing were synthesized. To minimize photobleaching, up-conversion nanocrystals were used as excitation host. Efficient energy transfer between host and chemosensors was established. A simple recognition mechanism with binding stoichiometry of 1:1 was found. Emission “off-on” effect triggered by cysteine and good photostability were obtained.