Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Shunichi Fukuzumi | * |
dc.date.accessioned | 2016-08-28T10:08:55Z | - |
dc.date.available | 2016-08-28T10:08:55Z | - |
dc.date.issued | 2012 | * |
dc.identifier.issn | 0947-6539 | * |
dc.identifier.other | OAK-9323 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/223102 | - |
dc.description.abstract | New multi-modular donor-acceptor conjugates featuring zinc porphyrin (ZnP), catechol-chelated boron dipyrrin (BDP), triphenylamine (TPA) and fullerene (C 60), or naphthalenediimide (NDI) have been newly designed and synthesized as photosynthetic antenna and reaction-center mimics. The X-ray structure of triphenylamine-BDP is also reported. The wide-band capturing polyad revealed ultrafast energy-transfer (k ENT=1.0×10 12 s -1) from the singlet excited BDP to the covalently linked ZnP owing to close proximity and favorable orientation of the entities. Introducing either fullerene or naphthalenediimide electron acceptors to the TPA-BDP-ZnP triad through metal-ligand axial coordination resulted in electron donor-acceptor polyads whose structures were revealed by spectroscopic, electrochemical and computational studies. Excitation of the electron donor, zinc porphyrin resulted in rapid electron-transfer to coordinated fullerene or naphthalenediimide yielding charge separated ion-pair species. The measured electron transfer rate constants from femtosecond transient spectral technique in non-polar toluene were in the range of 5.0×10 9-3.5×10 10 s -1. Stabilization of the charge-separated state in these multi-modular donor-acceptor polyads is also observed to certain level. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. | * |
dc.language | English | * |
dc.title | Ultrafast photoinduced energy and electron transfer in multi-modular donor-acceptor conjugates | * |
dc.type | Article | * |
dc.relation.issue | 43 | * |
dc.relation.volume | 18 | * |
dc.relation.index | SCI | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 13844 | * |
dc.relation.lastpage | 13853 | * |
dc.relation.journaltitle | Chemistry - A European Journal | * |
dc.identifier.doi | 10.1002/chem.201202265 | * |
dc.identifier.wosid | WOS:000310066700035 | * |
dc.identifier.scopusid | 2-s2.0-84867520758 | * |
dc.author.google | El-Khouly M.E. | * |
dc.author.google | Wijesinghe C.A. | * |
dc.author.google | Nesterov V.N. | * |
dc.author.google | Zandler M.E. | * |
dc.author.google | Fukuzumi S. | * |
dc.author.google | D'Souza F. | * |
dc.contributor.scopusid | Shunichi Fukuzumi(35430038100;58409757400) | * |
dc.date.modifydate | 20240401081001 | * |