Highly sensitive and selective chemosensor for Hg2+ based on the rhodamine fluorophore

Min Hee Lee, Jia Sheng Wu, Jeong Won Lee, Jong Hwa Jung, Jong Seung Kim

Research output: Contribution to journalArticlepeer-review

310 Citations (Scopus)


A novel tren-based tripodal chemosentor 1 bearing a rhodamine and two tosyl groups was synthasized and its sensing behavior toward metal ions was investigated by UV/vis and fluorescence spectroscopies. Addition of a Hg 2+ ion to a CH3CN solution of 1 gave a visual color change as well as significantly enhanced fluorescence, while other ions including Pb2+, Zn2+, Cu2+, Ca2+, Ba 2+, Cd2+, Co2+, Mg2+, Ag +, Cs+, Li+, and Na+ induced no or much smaller color/spectral changes, which constituted a Hg2+- selective fluorescent chemosensor (OFF-ON).

Original languageEnglish
Pages (from-to)2501-2504
Number of pages4
JournalOrganic Letters
Issue number13
Publication statusPublished - 2007 Jun 21
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry


Dive into the research topics of 'Highly sensitive and selective chemosensor for Hg<sup>2+</sup> based on the rhodamine fluorophore'. Together they form a unique fingerprint.

Cite this