Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Shunichi Fukuzumi | * |
dc.date.accessioned | 2016-08-28T10:08:09Z | - |
dc.date.available | 2016-08-28T10:08:09Z | - |
dc.date.issued | 2013 | * |
dc.identifier.issn | 1932-7447 | * |
dc.identifier.other | OAK-10222 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/223833 | - |
dc.description.abstract | Photoinduced electron-transfer dynamics of an electron donor-acceptor-donor triad, consisting of anthracenes and perylenediimide (An2PDI), were investigated in different media by using time-resolved laser spectroscopic techniques. The aromatic components are attached by flexible linkers containing hydrophilic quaternary ammonium joints in the triad. In MeOH, in which An 2PDI dissolves completely, no electron-transfer products were observed in the transient absorption measurements after the excitation of anthracenes and PDI because of the rapid back-electron transfer. The charge-separation rate of the triad in MeOH was estimated as 1.2 × 10 10 s-1 from the quenching of the singlet-excited state of PDI. In contrast, the formation of electron-transfer products was evident in water, and the electron-transfer rate was 200 times faster than the rate in MeOH in the course of the excitations of the selected components of An 2PDI (2.5 × 1012 s-1). It is concluded from the time-resolved data that the conformational disposition of the hydrophilic joints due to hydrophilic-lipophilic interactions and the facile π-stacking of hydrophobic PDI cores in water results in the contraction and the relative rigidity of the electron-transfer distance and the intermolecular stabilization of electron-transfer species within the polymeric self-assemblies of An2PDI, enabling an efficient photodriven electron-transfer process to occur. © 2013 American Chemical Society. | * |
dc.language | English | * |
dc.title | Enhancement of photodriven charge separation by conformational and intermolecular adaptations of an anthracene-perylenediimide-anthracene triad to an aqueous environment | * |
dc.type | Article | * |
dc.relation.issue | 24 | * |
dc.relation.volume | 117 | * |
dc.relation.index | SCI | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 12438 | * |
dc.relation.lastpage | 12445 | * |
dc.relation.journaltitle | Journal of Physical Chemistry C | * |
dc.identifier.doi | 10.1021/jp403285k | * |
dc.identifier.wosid | WOS:000320911100006 | * |
dc.identifier.scopusid | 2-s2.0-84879440421 | * |
dc.author.google | Supur M. | * |
dc.author.google | Sung Y.M. | * |
dc.author.google | Kim D. | * |
dc.author.google | Fukuzumi S. | * |
dc.contributor.scopusid | Shunichi Fukuzumi(35430038100;58409757400) | * |
dc.date.modifydate | 20240401081001 | * |