Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Shunichi Fukuzumi | * |
dc.contributor.author | Kei Okubo | * |
dc.date.accessioned | 2016-08-27T04:08:18Z | - |
dc.date.available | 2016-08-27T04:08:18Z | - |
dc.date.issued | 2015 | * |
dc.identifier.issn | 2041-6520 | * |
dc.identifier.issn | 2041-6539 | * |
dc.identifier.other | OAK-15785 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/217698 | - |
dc.description.abstract | The catalytic two-electron reduction of dioxygen (O-2) by octamethylferrocene (Me(8)Fc) occurs with a metal-free triphyrin (HTrip) in the presence of perchloric acid (HClO4) in benzonitrile (PhCN) at 298 K to yield Me(8)Fc(+) and H2O2. Detailed kinetic analysis has revealed that the catalytic two-electron reduction of O-2 by Me(8)Fc with HTrip proceeds via proton-coupled electron transfer from Me(8)Fc to HTrip to produce H(3)Tripc(center dot+), followed by a second electron transfer from Me(8)Fc to H(3)Tripc(center dot+) to produce H(3)Trip, which is oxidized by O-2 via formation of the H(3)Trip/O-2 complex to yield H2O2. The rate-determining step in the catalytic cycle is hydrogen atom transfer from H(3)Trip to O-2 in the H(3)Trip/O-2 complex to produce the radical pair (H(3)Tripc(center dot+) HO(2)c) as an intermediate, which was detected as a triplet EPR signal with fine-structure by the EPR measurements at low temperature. The distance between the two unpaired electrons in the radical pair was determined to be 4.9 angstrom from the zero-field splitting constant (D). | * |
dc.language | English | * |
dc.publisher | ROYAL SOC CHEMISTRY | * |
dc.title | Catalytic two-electron reduction of dioxygen catalysed by metal-free [14]triphyrin(2.1.1) | * |
dc.type | Article | * |
dc.relation.issue | 11 | * |
dc.relation.volume | 6 | * |
dc.relation.index | SCI | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 6496 | * |
dc.relation.lastpage | 6504 | * |
dc.relation.journaltitle | CHEMICAL SCIENCE | * |
dc.identifier.doi | 10.1039/c5sc02465j | * |
dc.identifier.wosid | WOS:000362977000059 | * |
dc.identifier.scopusid | 2-s2.0-84944051549 | * |
dc.author.google | Mase, Kentaro | * |
dc.author.google | Ohkubo, Kei | * |
dc.author.google | Xue, Zhaoli | * |
dc.author.google | Yamada, Hiroko | * |
dc.author.google | Fukuzumi, Shunichi | * |
dc.contributor.scopusid | Shunichi Fukuzumi(35430038100;58409757400) | * |
dc.contributor.scopusid | Kei Okubo(7101788990) | * |
dc.date.modifydate | 20240130092215 | * |