Chromogenic and fluorogenic sensing properties toward cations and anions by a terpyridine/phenylimidazo [4,5-f]phenanthroline hybrid

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• 作者：Ze-Bao Zheng^a ; ^b  ; [Author Vitae] ; Zhi-Ming Duan^a  ; [Author Vitae] ; Jia-Xin Zhang^a  ; [Author Vitae] ; Ke-Zhi Wang^a ; ^{kzwang@bnu.edu.cn}  ; [Author Vitae]
• 关键词：Terpyridine ; Phenanthroline ; Fluoride sensor ; Ferrous ion sensor
• 刊名：Sensors and Actuators B ; Chemical
• 出版年：2012
• 期刊代码：161_09254005
• 类别：et
• 出版时间：5 July, 2012
• 卷：169
• 期：Complete
• 页码：312-319
• 文件大小：1108 K

摘要

A modified synthesis of terpyridine/phenylimidazo[4,5-f]phenanthroline hybrid 2-(4-(2,6-di(pyridin-2-yl)pyridin-4-yl)phenyl)-1H-imidazo[4,5-f][1,10]phenanthroline (L) is reported. The optical and colorimetric sensing properties of L for cations and anions were investigated by naked eye, and UV-vis and fluorescence spectroscopy in CH₃CN-N,N-dimethylformamide (43:1, v/v). L was shown to effectively and selectively recognize biologically important F^{鈭?/sup> over Cl鈭?/sup>, Br鈭?/sup>, I鈭?/sup>, AcO鈭?/sup>, NO₃鈭?/sup>, ClO₄鈭?/sup>, and H₂PO₄鈭?/sup>. L in CH₃CN/N,N-dimethylformamide (43:1, v/v) was also found to have fluorimetric sensing ability for Zn2+ and Cd2+. In both the CH₃CN/N,N-dimethylformamide and aqueous 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid buffer (pH = 7.2)/CH₃CN/DMF (13/30/1, v/v/v) solutions, L exhibited colorimetric sensing ability for Fe2+ by an obvious color change from colorless to magenta.}