Use of a new thiacalix[4]arene derivative bearing two 4-chloro-7-nitrobenzofurazan groups as a colorimetric and fluorescent chemosensor for Ag⁺ and AcO^鈭?/sup>

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• 作者：Yu Fu^a  ; [Author Vitae] ; Xi Zeng^a  ; [Author Vitae] ; Lan Mu^a ; ^{sci.lmou@gzu.edu.cn}  ; [Author Vitae] ; Xue-Kai Jiang^a  ; [Author Vitae] ; Min Deng^a  ; [Author Vitae] ; Jian-Xin Zhang^b  ; [Author Vitae] ; Takehiko Yamato^c  ; [Author Vitae]
• 关键词：Thiacalix[4]arene derivative ; Multifunction chemosensor ; Ag+ ; AcO&minus
• 刊名：Sensors and Actuators B ; Chemical
• 出版年：2012
• 期刊代码：161_09254005
• 类别：et
• 出版时间：31 March, 2012
• 卷：164
• 期：1
• 页码：69-75
• 文件大小：890 K

摘要

The synthesis and spectroscopic studies of a thiacalix[4]arene-based sensor of 1,3-alternate-25,27-bis(2-aminoethoxy)-26,28-bis(2-methoxyethyl)-thiacalix[4]arene linked 4-chloro-7-nitrobenzofurazan (NBD-Cl) are described. The properties of the compound were evaluated and show that it is a colorimetric and fluorescence sensor for Ag⁺ and AcO^{鈭?/sup>. The addition of Ag+ results in a red shift of the absorption spectrum of the sensor, which is clearly visible to the naked eye, accompanied by a strong quenching of the fluorescence. With the addition of AcO鈭?/sup>, the fluorescence was severely quenched, and the absorbance increased significantly, with a new absorption band appearing at shorter wavelength. This demonstrated that the multifunctional sensing compound prepared from a novel thiacalix[4]arene was highly selective for AcO鈭?/sup>.}