摘要
以层状锌铝水滑石为主体,乙二醇为分散介质,通过离子交换法,成功地将一对具有给体-受体性质的生色团香豆素-3-甲酸(3-CCA)与9-蒽甲酸(9-ACA)共插入到层状锌铝水滑石层间。采用XRD、IR、TG-DTA等测试技术对共插层产物进行了结构表征,采用UV-visible吸收光谱和荧光光谱研究了产物的光谱特性。结果表明,由于给体-受体进入层间,不仅客体与主体层板存在静电力和氢键相互作用,而且在限域空间内存在客体之间的相互作用,从而产生了给体-受体间的能量转移。
A pair of chromophores with donor-acceptor properties, coumarin-3-carboxylic acid （3-CCA） and 9- anthracene carboxylic acid （9-ACA）, have been intercalated into the layered double hydroxide （LDH）, [Zn0.66 Al0.34（OH）2 ] （CO3）0.17＂·0.33H2O by the method of ion-exchange. The resulting co-intercalation compounds were characterized by X-ray diffraction, infrared spectroscopy and thermogravimetry techniques. The photochemical properties Of the compounds were studied by UV-visible absorption and fluorescence spectroscopy. The results indicate that the confinement of the pair of chromophores, 3-CCA/9-ACA, in their anionic forms within the restricted space of the interlayer region of LDHs favor guest-host and guest-guest interactions, and that the pair of chromophores 3-CCA/9-ACA can participate in energy transfer processes because of the characteristics of their excited states.
出处
《北京化工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第5期482-486,489,共6页
Journal of Beijing University of Chemical Technology(Natural Science Edition)
基金
北京市自然科学基金(2022015)
关键词
水滑石
共插层
给体-受体
能量转移
hydrotalcites
co-intercalation
donor-acceptor
energy transfer
