A new rhodamine derivative bearing benzothiazole and thiocarbonyl moieties as a highly selective fluorescent and colorimetric chemodosimeter for Hg2+

作者：Wang Fang; Nam Seong Won; Guo Zhiqian; Park Sungsu^*; Yoon Juyoung

来源：Sensors and Actuators B: Chemical , 2012, 161(1): 948-953.

DOI：10.1016/j.snb.2011.11.070

• Mercury ion sensor
• Rhodamine
• Fluorescent sensor
• Colorimetric sensor
• Microfluidic system

A novel rhodamine-based sensor 1 was designed and synthesized, which bears thiospirolactam chromophore and benzomidazole moieties. Sensor 1 showed a selective fluorescence enhancement and colorimetric change for Hg2+ in CH3CN-HEPES buffer (0.01 M, pH 7.4) (3:7, v/v). As high as 180-fold fluorescence enhancement was observed for Hg2+, which was attributed to the selective spirolactam-ring opening process followed by subsequent desulfurization. Furthermore, chemodosimeter 1 was successfully applied to microfluidic device.

• 出版日期2012-1-3