title: Highly sensitive detection of carbon dioxide by a pyrimido[1,2-a]benzimidazole derivative: combining experimental and theoretical studies.
abstract: In the present paper, a "light-up" chemsensor with a high specificity for carbon dioxide detection using a pyrimido[1,2-a]benzimidazole derivative (P1H) in liquid media has been developed. The results show that P1H reacts with carbon dioxide activated by a basic ion to form a carboxylic acid compound (P1-COOH). These results also provide a possible method for carboxylation reactions of P1H using carbon dioxide based on a vinyl carbanion. The complete reaction mechanism cycle was also described using DFT calculations.
authors.affiliation: College of Chemistry and Institute for Advanced Study, Nanchang University, 999 Xuehu Road, Nanchang, Jiangxi 33031, China. Hongmingwang@ncu.edu.cn.
authors.forename: Guomin
authors.initials: G
authors.lastname: Xia
authors.forename: Chengyan
authors.initials: C
authors.lastname: Ruan
authors.forename: Hongming
authors.initials: H
authors.lastname: Wang