4-甲氧基苯甲醛与乙二胺的缩合产物：用于铈（III）的“开-关”荧光传感器
Condensation Product of 4-Methoxybenzaldehyde and Ethylenediamine: "Off-On" Fluorescent Sensor for Cerium(III).
作者信息
Das Diganta Kumar, Bharali Bidisha, Goyari Swrangsi
机构信息
Department of Chemistry, Gauhati University, Guwahati, Assam, 781014, India.
出版信息
J Fluoresc. 2018 Nov;28(6):1357-1361. doi: 10.1007/s10895-018-2298-0. Epub 2018 Sep 24.
The condensation product (L) of 4-methoxybenzaldehyde and ethylenediamine has been synthesised and characterised. L showed a 21 times enhancement in fluorescence intensity on interaction with Ce in CHOH at λ = 360 nm when excited with 270 nm photons. Metal ions K, Na, Al, Co, Hg, Cd, Ni, Zn, Mn, Mg and Ca do not interfere. The stoichiometry of binding and the binding constants were determined from spectroscopic data and found to be 1:1 and 10 M respectively. The detection limit was found to be 10 M. The protonation/de-protonation of water molecules coordinated to Ce was found to show interesting behaviour on the fluorescence of L:Ce.
4-甲氧基苯甲醛与乙二胺的缩合产物（L）已被合成并表征。当用270 nm光子激发时，L在λ = 360 nm处与甲醇中的铈相互作用时荧光强度增强了21倍。金属离子K、Na、Al、Co、Hg、Cd、Ni、Zn、Mn、Mg和Ca不产生干扰。结合化学计量比和结合常数由光谱数据确定，分别为1:1和10 M。检测限为10 M。发现与铈配位的水分子的质子化/去质子化对L:Ce的荧光表现出有趣的行为。
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