A N-(2-hydroxyethyl)piperazine dangled 2,5-diphenyl-1,3,4-oxadiazole-based fluorescent sensor for selective relay recognition of Cu2+ and sulfide in water

作者：Tang, Lijun^*; Zheng, Zhuxuan; Bian, Yanjiang

来源：Luminescence, 2016, 31(8): 1456-1460.

DOI：10.1002/bio.3128

• fluorescence
• Cu2+ detection
• sulfide recognition
• relay recognition

A new 2,5-diphenyl-1,3,4-oxadiazole-based derivative (L) was synthesized and applied as a highly selective and sensitive fluorescent sensor for relay recognition of Cu2+ and S2- in water (Tris-HCl 10 mM, pH = 7.0) solution. L exhibits an excellent selectivity to Cu2+ over other examined metal ions with a prominent fluorescence 'turn-off' at 392 nm. L interacts with Cu2+ through a 1: 2 binding stoichiometry with a detection limit of 4.8 x 10(-7) M. The on-site formed L-2Cu(2+) complex exhibits excellent selectivity to S2- with a fluorescence 'off-on' response via a Cu2+ displacement approach.

• 出版日期2016-12
• 单位渤海大学