文献类型：期刊文献

英文题名：Luminescent properties and photo-induced electron transfer of naphthalimides with piperazine substituent

作者：Gan, Jiaan[1]; Chen, Kongchang[1]; Chang, Chen-Pin[2]; Tian, He[1]

机构：[1]E China Univ Chem Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[2]Fu Jen Catholic Univ, Dept Chem, Taipei, Taiwan

年份：2003

卷号：57

期号：1

起止页码：21

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：2003157430948);WOS:【SCI-EXPANDED(收录号:WOS:000181908100004)】；

语种：英文

外文关键词：fluorescent probe; photo-induced electron transfer; synthesis; 1,8-naphthalimide; fluorescent lifetime

摘要：Novel piperazine substituted naphthalimide model compounds 2-methyl-6-(4-methyl-piperazin-1-yl)-benzo[de] isoquinoline-1,3-dione (NA1), 2-methyl-6-(4,4-dimethyl-piperazin-1-yl)-benzo[de] isoquinoline-1,3-dione iodide. (NA2) and 2-methyl-6-(4-methyl-piperazin-1-yl)-benzo[de] isoquinoline-1,3-dione hydrochloride (NA3) were synthesized. Fluorescence spectra data of NA1 showed the fluorescence quantum yields plot of NA1 versus pH value is typically characteristic of pH probe. The approximate free energy of charge separation (DeltaG(cs)) for the excited singlet state and the fluorescent lifetime data of NA1 showed that the fluorescence of 4-amino-1,8-naphthalimide fluorophore can be quenched by the PET process from the alkylated amine donor-to the naphthalimide moiety. The PET path can. be obviously switched off either by the protonation (as for NA3) of quarternization (as for NA2) of the alkylated amine donor. (C) 2003 Elsevier Science Ltd. All rights reserved.