A Highly Selective Fluorescent Indicator for Copper Based on a Boron Complex. (January 2015)

• Record Type: Journal Article
• Authors: Zheng, Jie; Huang, Fang; Li, Yujin; Ye, Qing; Jia, Jianhong; Han, Liang; Gao, Jianrong
• Is Part Of: Journal of chemical research. Volume 39:Number 1(2015)
• Page Start: 36
• Page End: 40
• Publication Date: 2015-01
• Subjects: Cu2+ -- fluorescent indicator -- boron complex -- salicylaldehyde -- hydrazine -- fluorescent quenching; Chemistry -- Research -- Periodicals; Chemistry -- Periodicals; 540.5
• DOI: 10.3184/174751914X14190791988509
• Languages: English
• ISSNs: 1747-5198

Abstract

Condensation of 4-(diethylamino)salicylaldehyde with aqueous hydrazine, followed by complexation with BF3 ·OEt2 gives a fluorescent indicator highly selective for copper. The indicator forms a 2 : 1 complex with Cu 2+ and displays a highly sensitive and selective fluorescent quenching action with Cu 2+ upon excitation at 440 nm in water/THF (7 : 3, v/v) solution. This action is pH-independent over the range 4.5 < pH < 9.5.