Tang Lijun, Zheng Zhuxuan, Bian Yanjiang
Department of Chemistry, Bohai University, Jinzhou, 121013, China.
Luminescence. 2016 Dec;31(8):1456-1460. doi: 10.1002/bio.3128. Epub 2016 Apr 17.
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 Cu and S in water (Tris-HCl 10 mM, pH = 7.0) solution. L exhibits an excellent selectivity to Cu over other examined metal ions with a prominent fluorescence 'turn-off' at 392 nm. L interacts with Cu through a 1:2 binding stoichiometry with a detection limit of 4.8 × 10 M. The on-site formed L-2Cu complex exhibits excellent selectivity to S with a fluorescence 'off-on' response via a Cu displacement approach. Copyright © 2016 John Wiley & Sons, Ltd.
合成了一种基于2,5-二苯基-1,3,4-恶二唑的新型衍生物（L），并将其用作高选择性和灵敏的荧光传感器，用于在水（10 mM Tris-HCl，pH = 7.0）溶液中对铜和硫进行接力识别。与其他检测的金属离子相比，L对铜表现出优异的选择性，在392 nm处有显著的荧光“猝灭”。L与铜以1:2的结合化学计量比相互作用，检测限为4.8×10 M。原位形成的L-2Cu配合物对硫表现出优异的选择性，通过铜置换方法呈现荧光“关-开”响应。版权所有© 2016约翰威立父子有限公司。
