Zinc(II) bis(dipyrromethenate)s as chemosensors for fluorescent detection of amines

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• 作者：A.A. Ksenofontov ; ^{ivalex.09@mail.ru" class="auth_mail" title="E-mail the corresponding author} ; G.B. Guseva ; E.V. Antina ; A.I. Vyugin
• 关键词：Zinc(II) bis(dipyrromethenate)s ; Chemosensors ; Amines ; Fluorescence quenching ; Detection limit
• 刊名：Journal of Luminescence
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：181
• 期：Complete
• 页码：387-392
• 全文大小：2005 K

文摘

It was proposed new highly sensitive «ON–OFF» fluorescent amines trace amounts (1.6x10⁻⁶–9.3x10⁻⁵ mol/L) sensors in organic media based on binuclear zinc(II) helicates with 2,2′-, 2,3′- and 3,3′- bis(dipyrromethene)s ([Zn₂L₂]). The results of fluorescence spectral studies of [Zn₂L₂]in binary mixtures of cyclohexane with amines (pyridine, diethylamine and trimethylamine) were presented. The influence of bis(dipyrromethene) ligands isomerism and electron-donating ability of N-containing co-solvent on the fluorescence quenching efficiency of [Zn₂L₂] in the presence of amines was discussed. It was determined, that the zinc(II) 3,3′-bis(dipyrromethenate) exhibits the highest fluorescence sensitivity in the amines presence in comparison with 2,3′- and 2,2′-analogs.