文献类型：期刊文献

英文题名：Naphthalimide as highly selective fluorescent sensor for Ag⁺ ions

作者：Xu Sheng; Li Wei; Chen Kong-Chang

机构：[1]E China Univ Sci & Technol, Adv Mat Lab, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China

年份：2007

卷号：25

期号：6

起止页码：778

外文期刊名：CHINESE JOURNAL OF CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000247412800008)】；

语种：英文

外文关键词：fluorescent chemosensor; naphthalimide; photo-induced electron transfer; silver ion

摘要：The naphthalimide derivative, NA1 was synthesized, which consists of a bis(2-(ethylthio)ethyl)amine group binding cations and naphthalimide unit as chromogenic and fluorogenic signaling subunit. Absorption and emission spectra and the effect of polarity of solvents and pH values were studied. The photo-induced electron transfer (PET) occurred from the donor of bis(2-(ethylthio)ethyl)amine group to the naphthalimide fluorophore. The present study demonstrates that NA1 is a viable candidate as a fluorescent receptor for a new Ag+ ion sensor. This silver ion chemosensor can discriminate Ag+ ion well among heavy metal ions by an enhancement of the fluorescence intensity in ethanol-water (1 : 9, V : V). And NA1 is also a pH-sensor because the fluorescence of the compound varies with the pH values.