A new fluorescent chemosensor bearing two imidazolium groups as well as two anthracene groups has been synthesized. This chemosensor displayed a highly selective fluorescence quenching effect and a unique excimer peak only with H2 PO4-. The association constant of 1 with H2 PO4- was calculated as >106 M-1.
Bibliographical noteFunding Information:
This work was supported by the Korea Research Foundation Grant (KRF-R14-2003-014-01001-0), the Basic Science Research of Korea Science and Engineering Foundation (R01-2006-000-10001-0) and Seoul R&BD Program (10816).