A novel Schiff base receptor L has been fabricated for fluorescent-colorimetric detection of CO32− in aqueous media. L shows an excellent selectivity, rapid response and reversibility and its sensitivity for CO32− is the lowest ever found (96 nM).
<p>We report here
that a fluorescent benzobisimidazolium salt (TBBI) can be used for the fluorescent and colorimetric detection of carbonyl
sulfide (COS) over related heterocumulenes including CO<sub>2</sub> and CS<sub>2</sub>
in wet MeCN. The reaction between TBBI
and COS in the presence of fluoride yields a highly fluorescent (l<sub>em</sub> = 354 nm) and colored product (l<sub>ex</sub> = 321 nm), that is readily observed by the
naked eye. We view these results as a first step toward developing
activity-based probes for COS detection.</p>
Progress Towards Colorimetric and Fluorescent Detection of Carbonyl Sulfide
