A new rhodamine derivative bearing benzothiazole and thiocarbonyl moieties as a highly selective fluorescent and colorimetric chemodosimeter for Hg 2+

Fang Wang, Seong Won Nam, Zhiqian Guo, Sungsu Park, Juyoung Yoon

Research output: Contribution to journalArticlepeer-review

96 Scopus citations

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 languageEnglish
Pages (from-to)948-953
Number of pages6
JournalSensors and Actuators, B: Chemical
Volume161
Issue number1
DOIs
StatePublished - 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

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