A fluorescent sensor based on bicarboxamidoquinoline for highly selective relay recognition of Zn2+ and citrate with ratiometric response

作者：Tian Xuhua; Guo Xiangfeng^*; Jia Lihua; Yang Rui; Cao Guangzhou; Liu Chaoyue

来源：Sensors and Actuators B: Chemical , 2015, 221: 923-929.

DOI：10.1016/j.snb.2015.07.047

• Relay recognition
• Ratiometric sensor
• Zinc
• Citrate
• Bicarboxamidoquinoline

A novel bicarboxamidoquinoline-based fluorescent sensor 1 was designed and synthesized, which performed ratiometric recognition for Zn2+ without interference from Cd2+. The sensor 1 bound Zn2+ in 1:1 stoichiometry, with the binding constant of 2.07 x 10(3) M-1. Moreover, the in situ generated 1-Zn2+ complex could serve as an excellent ratiometric citrate sensor via a Zn2+ displacement and discriminated citrate from a series of common carboxylates in neutral aqueous solution.

• 出版日期2015-12-31
• 单位黑龙江大学; 齐齐哈尔大学