A copillar[5]arene-based fluorescence "on–off–on" sensor is applied in sequential recognition of an iron cation and a fluoride anion. (10th February 2017)

• Record Type: Journal Article
• Authors: Chen, Jin-Fa; Cheng, Xiao-Bin; Li, Hui; Lin, Qi; Yao, Hong; Zhang, You-Ming; Wei, Tai-Bao
• Is Part Of: New journal of chemistry. Volume 41:Number 5(2017)
• Page Start: 2148
• Page End: 2153
• Publication Date: 2017-02-10
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c6nj03380f
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : A copillar[5]arene-based [c2]daisy-chain dimer is applied in sequential detection of Fe 3+ and F − through a competitive complexation reaction. Abstract : We have synthesized a copillar[5]arene-based fluorescence "on–off–on" sensor (DBP5 ) and used it for sequential fluorescence sensing for Fe 3+ and F − in H2 O/DMSO (1 : 9, v/v) solution. The copillar[5]areneDBP5 can produce blue fluorescence because it easily forms [c2]daisy-chain dimers by self-assembly behavior in solution.DBP5 exhibits high selectivity and sensitivity (1.65 × 10 −8 M) to Fe 3+ . Moreover, the in situ formedDBP5 –Fe 3+ complex is further utilized to sense F − through a complexation reaction with high selectivity and sensitivity (6.44 × 10 −8 M) to F − . Furthermore, we designed the fluorescence switch ofDBP5 between Fe 3+ and F − . The structure ofDBP5 was characterized by single crystal XRD.