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Photoinduced Electron Transfer Between Mono-6-p-nitrobenzoyl-ˉ-cyclodextrin and Adamantanamine-Cn-Co/Ni-porphyrins
Guo-tao Wen,Man-zhou Zhu*,Hui-yuan Hu,Xiang-ming Meng,Zhuo Wang,Qing-xiang Guo*
Author NameAffiliationE-mail
Guo-tao Wen Department of Chemistry, University of Science and Technology of China, Hefei 230026, China;Provincial Key Laboratory of Research on Wastewater Treatment Technology, Anhui Academy of Environmental Science Research, Hefei 230061, China zmz@ustc.edu.cn  
Man-zhou Zhu* Department of Chemistry, University of Science and Technology of China, Hefei 230026, China  
Hui-yuan Hu Department of Chemistry, University of Science and Technology of China, Hefei 230026, China  
Xiang-ming Meng Department of Chemistry, University of Science and Technology of China, Hefei 230026, China  
Zhuo Wang Department of Chemistry, University of Science and Technology of China, Hefei 230026, China  
Qing-xiang Guo* Department of Chemistry, University of Science and Technology of China, Hefei 230026, China qxguo@ustc.edu.cn 
Abstract:
Two series monotailed porphyrins, Cobalt-5-{4-[ω-(1-adamantaneamino) alkyloxy]phenyl}-10,15,20-triphenyl porphyrinate (CoPCnA, n=4,5,6) anj Nickel-5-{4-[ω-(1-adamantaneamino)alkyloxy]phenyl}-10,15,20-triphenyl porphyrinate (NiPCnA, n=4,5,6), were synthesized, in which the porphyrin moiety was connected to 1-adamantanamine via a flexible hydrocarbon chain. The fluorescence quenching between these donor substrates and mono-6-p-nitrobenzoyl-β-cyclodextrin (NBCD) was studied in detail. Distinct fluorescence quenching occured in these supramolecular systems. This quenching was attributed to the photoinduced electron transfer (PET) inside the supramolecular assembly between the porphyrin donors and cyclodextrin acceptors. Detailed Stern-Volmer constants were measured and they were partitioned into dynamic SternVolmer quenching constants and static binding constants. It was demonstrated that the PET interaction between the porphyrin subunits and NBCD is indeed effective.
Key words:  Photoinduced electron transfer, Host-guest complex, Cyclodextrin, Supramolecular system,Fluorescence quenching
FundProject:
环糊精衍生物与钴/镍卟啉衍生物组成的超分子体系的电子转移反应研究
文国涛,朱满洲*,胡惠媛,孟祥明,王卓,郭庆祥*
摘要:
合成了两类新型的单尾卟啉-5-(4-(ω-(1-金刚胺基)烷氧基)苯基)-10,15,20-三苯基钴/镍卟啉(CoPCnA,NiPCnA)做为电子给体,并用荧光光谱研究这两类化合物与作为电子受体的环糊精衍生物单-6-氧-(对硝基苯甲酰基)-环糊精(NBCD)在水溶液中的相互作用.观察到由光诱导电子转移反应引起的荧光淬灭,表明所合成的卟啉衍生物和NBCD组成稳定的超分子体系,并测定了详细的动力学淬灭常数和包合常数.
关键词:  光诱导的电子转移, 主-客体复合物,环糊精,超分子,荧光淬灭
DOI:10.1360/cjcp2006.19(4).329.6
分类号: