Phosphorescent iridium(III) carbodithioate complex for the detection of Hg2+ and acetonitrile

• Published in: Inorganic chemistry communications 2013-11, Vol.37, p.121-126
• Main Authors: Tong, Bihai, Ma, Peng, Zhang, Man, Liu, Yuanyuan, Mei, Qunying, Zhang, Qian-Feng
• Format: Article
• Language: English
• Subjects: Acetonitrile; Chemosensor; Cyclometalated iridium(III) complex; Logic gate; Mercury(II); Phenylcinnoline
• ISSN: 1387-7003; 1879-0259
• DOI: 10.1016/j.inoche.2013.09.031

A cyclometalated iridium(III) complex Ir(dpci)2(cbd) (Ir1, dpciH=3, 4-diphenylcinnoline, cbd=N-carbazolylcarbodithioate) has been prepared and confirmed by 1H NMR, 13C NMR, MS, and crystal data. Ir1 could be used as a phosphorescent chemosensor for Hg2+ and acetonitrile (ACN). Upon addition of aqueous Hg2+, the ACN solution of Ir1 gave a visual color change and significant phosphorescent enhancing (130-fold) at 580nm (OFF–ON). Ir1 has been developed as an AND logic gate with Hg2+ and ACN as inputs. The dissociation of Ir1 and coordination with ACN are response for the sensor process. A cyclometalated iridium(III) complex Ir(dpci)2(cbd) (Ir1) has been prepared and confirmed. Ir1 could be used as a phosphorescent chemosensor for Hg2+ and acetonitrile (ACN). Upon addition of aqueous Hg2+, the ACN solution of Ir1 gave a visual color change and significant phosphorescent enhancing (130-fold) at 580nm (OFF–ON). Ir1 has been developed as an AND logic gate with Hg2+ and ACN as inputs. [Display omitted] •This complex could be used as a phosphorescent “turn-on” chemosensor for Hg2+.•The detection limit is down to 10-7 M range.•An AND logic gate has been developed with Hg2+ and acetonitrile as inputs.