Ulyanov Chuvash State Univeristy, Moskovsky pr. 15, Cheboksary, Russia.
J Fluoresc. 2022 Nov;32(6):2333-2342. doi: 10.1007/s10895-022-03027-9. Epub 2022 Sep 22.
A series of novel 6-oxo-1,6-dihydro-[2,2'-bipyridine]-5-carbonitriles has been synthesized and characterized. Their photophysical properties in DMSO solution and aqueous medium as well as fluorescence response to the presence of metal ions have been investigated. The obtained 4-(4-methoxyphenyl)-6-oxo-1,6-dihydro-[2,2'-bipyridine]-5-carbonitrile has been shown as a selective fluorescent "turn-ON" probe for Cd ions with LoD 0.359 µM, 1:1 metal-ligand ratio and binding constant of 5.2 × 10 M.
一系列新型 6-氧代-1,6-二氢-[2,2'-联吡啶]-5-甲腈已被合成并进行了表征。研究了它们在 DMSO 溶液和水介质中的光物理性质以及对金属离子存在的荧光响应。结果表明，4-(4-甲氧基苯基)-6-氧代-1,6-二氢-[2,2'-联吡啶]-5-甲腈是一种对 Cd 离子具有选择性荧光“开启”探针，检测限为 0.359 μM，金属-配体比例为 1:1，结合常数为 5.2×10^M。
