Abstract
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 Hg 2+ in CH 3CN-HEPES buffer (0.01 M, pH 7.4) (3:7, v/v). As high as 180-fold fluorescence enhancement was observed for Hg 2+, which was attributed to the selective spirolactam-ring opening process followed by subsequent desulfurization. Furthermore, chemodosimeter 1 was successfully applied to microfluidic device.
Original language | English |
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Pages (from-to) | 948-953 |
Number of pages | 6 |
Journal | Sensors and Actuators, B: Chemical |
Volume | 161 |
Issue number | 1 |
DOIs | |
State | Published - 3 Jan 2012 |
Bibliographical note
Funding Information:This work was supported by the National Research Foundation (NRF) grants ( 2011-0020450 , 20110001334 ) and WCU program ( R31-2008-000-10010-0 ). This work was also supported by the Ewha Global Top5 Grant 2011 of Ewha Womans University. Mass spectral data were obtained from the Korea Basic Science Institute (Daegu) on a Jeol JMS 700 high resolution mass spectrometer.
Keywords
- Colorimetric sensor
- Fluorescent sensor
- Mercury ion sensor
- Microfluidic system
- Rhodamine