ICCAS OpenIR
Enhancement of Energy Utilization in Light-Harvesting Dendrimers by the Pseudorotaxane Formation at Periphery
Zeng, Yi1; Li, Yingying1; Li, Ming1; Yang, Guoqiang2; Li, Yi1
2009-07-01
Source PublicationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
ISSN0002-7863
Volume131Issue:25Pages:9100-9106
AbstractA series of water-soluble naphthyl terminal-decorated dendrimers; G0-3NapH were synthesized. Fluorescence studies reveal that strong interactions among peripheral chromophores occur in these dendrimers according to the intensive excimer emission and the low fluorescence quantum yields (Phi(f) = 0.12, 0.097, 0.065, and 0.062 for G0-3NapH). Through assembly of dendrimer with cucurbit[7]uril (CB[7]), the well-defined pseudorotaxane assemblies GnNapH center dot xCB[7] (x = 4, 8, 16, 32 for n = 0-3, respectively) form and the energy dissipation is entirely suppressed, resulting in a dramatic increase of the fluorescence quantum yields of dendrimers (Phi(f) = 0.18, 0.19, 0.19, and 0.20 for 0-3 generations, respectively). The noncovalent modification is a reversible process, and CB[7] can be unthreaded from the dendrimer periphery by adding 1-amimoadamantane, which can form a more stable complex with CB[7]. Furthermore, 9-anthracenecarboxylic acid (AN), an energy acceptor, was introduced into the dendritic system to investigate the harvested energy utilization. Steady-state fluorescence investigations demonstrate that the energy transfer efficiencies from naphthyl to AN in G3NapH center dot 32CB[7]-AN and G2NapH center dot 16CB[7]-AN are enhanced 100 and 70% compared with those without CB[7] complexation. This study provides a new strategy for developing controllable light-harvesting or -emitting dendritic systems.
DOI10.1021/ja902998g
Indexed BySCI ; IC
Language英语
WOS IDWOS:000267631000065
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:63[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67306
Collection中国科学院化学研究所
Corresponding AuthorYang, Guoqiang
Affiliation1.Chinese Acad Sci, Key Lab Photochem Convers & Optoelect Mat, Tech Inst Phys & Chem, Beijing 100190, Peoples R China
2.Chinese Acad Sci, BNLMS, Key Lab Photochem, Inst Chem, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zeng, Yi,Li, Yingying,Li, Ming,et al. Enhancement of Energy Utilization in Light-Harvesting Dendrimers by the Pseudorotaxane Formation at Periphery[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2009,131(25):9100-9106.
APA Zeng, Yi,Li, Yingying,Li, Ming,Yang, Guoqiang,&Li, Yi.(2009).Enhancement of Energy Utilization in Light-Harvesting Dendrimers by the Pseudorotaxane Formation at Periphery.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,131(25),9100-9106.
MLA Zeng, Yi,et al."Enhancement of Energy Utilization in Light-Harvesting Dendrimers by the Pseudorotaxane Formation at Periphery".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 131.25(2009):9100-9106.
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