Linked Life Data

19105695

Source:http://linkedlifedata.com/resource/pubmed/id/19105695

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
pubmed:issue
2
pubmed:dateCreated
2009-1-14
pubmed:abstractText
The peculiar electrochemical and photophysical properties of porphyrin and fullerene molecules make them promising candidates for the construction of two- and three-dimensional organic-based materials. An important question is how pristine fullerene and porphyrin will organize when deposited on surfaces via in vacuum molecular beam evaporation. Here we show that codeposition of C(70) and Zn-tetraphenyl-porphyrin (ZnTPP) induces the self-assembly of electron-rich flat aromatic molecules at the curved surface of C(70), thus enhancing the chromophore interaction and forming a supramolecular multilayer donor-acceptor structure. While the ground-state electronic spectra almost reflect a simple summation of ZnTPP and C(70) components, the excited-state electrons at the porphyrin macrocycle can rapidly delocalize to the fullerene. The excited charge transfer time scale is faster than 1-2 fs, as shown by resonant photoemission for the core-excited charges.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Jan
pubmed:issn
1520-5126
pubmed:author
pubmed:issnType
Electronic
pubmed:day
21
pubmed:volume
131
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
644-52
pubmed:year
2009
pubmed:articleTitle
Mesoscopic donor-acceptor multilayer by ultrahigh-vacuum codeposition of Zn-tetraphenyl-porphyrin and C70.
pubmed:affiliation
Sincrotrone Trieste S.C.p.A., s.s. 14 km 163.5 in Area Science Park, 34012 Trieste, Italy.
pubmed:publicationType
Journal Article