A benzobisimidazolium-based fluorescent and colorimetric chemosensor for CO2

Zhiqian Guo, Na Ri Song, Jong Hun Moon, Myounwoo Kim, Eun Jin Jun, Jiyoung Choi, Jin Yong Lee, Christopher W. Bielawski, Jonathan L. Sessler, Juyoung Yoon

Research output: Contribution to journalArticlepeer-review

208 Scopus citations


A new sensor for the fluorescent and colorimetric detection of CO 2 is described. The system utilizes fluoride to activate a tetrapropyl benzobisimidazolium salt and operates in the absence of an exogenous base. On the basis of spectroscopic and theoretical analyses, the mode of action of the present system is ascribed to the fluoride-induced formation of an N-heterocyclic carbene intermediate that reacts with CO2 to form an imidazolium carboxylate.

Original languageEnglish
Pages (from-to)17846-17849
Number of pages4
JournalJournal of the American Chemical Society
Issue number43
StatePublished - 31 Oct 2012


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