Source:http://linkedlifedata.com/resource/pubmed/id/19226135
| Subject | Predicate | Object | Context |
|---|---|---|---|
| pubmed-article:19226135 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:19226135 | lifeskim:mentions | umls-concept:C0162867 | lld:lifeskim |
| pubmed-article:19226135 | lifeskim:mentions | umls-concept:C0441471 | lld:lifeskim |
| pubmed-article:19226135 | lifeskim:mentions | umls-concept:C1705822 | lld:lifeskim |
| pubmed-article:19226135 | lifeskim:mentions | umls-concept:C1706211 | lld:lifeskim |
| pubmed-article:19226135 | lifeskim:mentions | umls-concept:C0348011 | lld:lifeskim |
| pubmed-article:19226135 | lifeskim:mentions | umls-concept:C1450054 | lld:lifeskim |
| pubmed-article:19226135 | lifeskim:mentions | umls-concept:C0007961 | lld:lifeskim |
| pubmed-article:19226135 | lifeskim:mentions | umls-concept:C1283195 | lld:lifeskim |
| pubmed-article:19226135 | lifeskim:mentions | umls-concept:C1546426 | lld:lifeskim |
| pubmed-article:19226135 | lifeskim:mentions | umls-concept:C1548280 | lld:lifeskim |
| pubmed-article:19226135 | pubmed:issue | 3 | lld:pubmed |
| pubmed-article:19226135 | pubmed:dateCreated | 2009-3-25 | lld:pubmed |
| pubmed-article:19226135 | pubmed:abstractText | Photoinduced charge transfer events between 3 nm diameter CdSe semiconductor nanocrystals and an electron acceptor, MV2+, have been probed in the subpicosecond-microseconds-seconds time scale by confining the reactants in an AOT/heptane reverse micelle. The probe molecule, methyl viologen (MV2+) interacts with the excited CdSe nanoparticle and quenches its emission effectively. The ultrafast electron transfer to MV2+, as monitored from the exciton bleaching recovery of CdSe and the formation of MV+* radical, is completed with an average rate constant of 2.25x10(10) s(-1). Under steady state irradiation (450 nm) the accumulation of MV+* is seen with a net quantum yield of 0.1. Mediation of the electron transfer through TiO2 nanoparticles is achieved by coupling them with the CdSe-MV2+ system within the reverse micelle. This coupling of two semiconductor nanoparticles increases the quantum yield of MV2+ reduction by a factor of 2. The dual roles of TiO2 as an electron shuttle and a rectifier are elucidated by transient absorption spectroscopy and steady state photolysis. The presence of both TiO2 and MV2+ in the reverse micelle creates a synergistic effect to enhance the electron transfer rate constant by an order of magnitude. The time-resolved events that dictate the production and stabilization of electron transfer product provide an insight into the photocatalytic systems that are potentially important in solar hydrogen production and photocatalytic remediation. | lld:pubmed |
| pubmed-article:19226135 | pubmed:language | eng | lld:pubmed |
| pubmed-article:19226135 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:19226135 | pubmed:status | PubMed-not-MEDLINE | lld:pubmed |
| pubmed-article:19226135 | pubmed:month | Mar | lld:pubmed |
| pubmed-article:19226135 | pubmed:issn | 1936-086X | lld:pubmed |
| pubmed-article:19226135 | pubmed:author | pubmed-author:KamatPrashant... | lld:pubmed |
| pubmed-article:19226135 | pubmed:author | pubmed-author:HarrisClifton... | lld:pubmed |
| pubmed-article:19226135 | pubmed:issnType | Electronic | lld:pubmed |
| pubmed-article:19226135 | pubmed:day | 24 | lld:pubmed |
| pubmed-article:19226135 | pubmed:volume | 3 | lld:pubmed |
| pubmed-article:19226135 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:19226135 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:19226135 | pubmed:pagination | 682-90 | lld:pubmed |
| pubmed-article:19226135 | pubmed:year | 2009 | lld:pubmed |
| pubmed-article:19226135 | pubmed:articleTitle | Photocatalysis with CdSe nanoparticles in confined media: mapping charge transfer events in the subpicosecond to second timescales. | lld:pubmed |
| pubmed-article:19226135 | pubmed:affiliation | Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA. | lld:pubmed |
| pubmed-article:19226135 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:19226135 | pubmed:publicationType | Research Support, U.S. Gov't, Non-P.H.S. | lld:pubmed |