文献类型：期刊文献

英文题名：A novel chromatism switcher with double receptors selectively for Ag⁺ in neutral aqueous solution:: 4,5-diaminoalkeneamino-N-alkyl-1,8-naphthalimides

作者：Jia, LH; Zhang, Y; Guo, XF; Qian, XH

机构：[1]Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China;[2]Qiqihar Univ, Qiqihar 161006, Peoples R China;[3]E China Univ Sci & Technol, Shanghai Key Lab Chem Biol, Inst Pesticides & Pharmaceut, Shanghai 200237, Peoples R China

年份：2004

卷号：45

期号：20

起止页码：3969

外文期刊名：TETRAHEDRON LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000221201900029)】；

语种：英文

摘要：Two novel fluorosensors of 4,5-disubstituted-N-alkyl-1,8-naphthalimide derivatives (H1, H2, H3) with double ethylenediamino receptors, double propylenediamino receptors, or one methylpiperazine receptor were synthesized, respectively. Their fluorescence and absorption in the presence or absence of nine metal ions were studied. In the presence of Ag+, HI's absorption moved to long wavelength with color change from yellow-green to red, its quenching and red shift in fluorescence were also remarkable. Similarly, HI's fluorescence was also strongly quenched in the presence Of CU2+. In addition, H1 and H2 show high pH sensitively. There was 139-folds fluorescence enhancement for H1, 22-folds for H2, and 4-folds for H3 when pH was changed from 8 to 3, respectively. (C) 2004 Elsevier Ltd. All rights reserved.