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Titolo:
THE STRUCTURE OF PHOTOEXCITED PLATINUM POP MEASURED WITH MICROSECOND RESOLVED XAFS
Autore:
LIVINS P; THIEL D; STERN E; LEWIS A;
Indirizzi:
UNIV WASHINGTON,DEPT PHYS,FM-15 SEATTLE WA 98195 CORNELL UNIV,DEPT APPL PHYS ITHACA NY 14983
Titolo Testata:
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS
, volume: 32, anno: 1993, supplemento:, 32-2
pagine: 195 - 197
SICI:
0021-4922(1993)32:<195:TSOPPP>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIPHOSPHITE COMPLEXES; PT2(P2O5H2)44; SPECTRA;
Keywords:
TIME RESOLVED XAFS; KINETIC FLOW METHOD; PLATINUM POP;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
12
Recensione:
Indirizzi per estratti:
Citazione:
P. Livins et al., "THE STRUCTURE OF PHOTOEXCITED PLATINUM POP MEASURED WITH MICROSECOND RESOLVED XAFS", JPN J A P 1, 32, 1993, pp. 195-197

Abstract

We report a musec resolved XAFS measurement of the excited triplet electronic state 3A2u(dsigmapsigma) of Pt2(P2O5H2)44- in solution employing a new technique. The measurement utilizes a vertical flow of 10 m/s produced by a small nozzle, similiar to that of a dye laser. A linefocused laser excites the molecules in the flow while a 10 mum vertically confined line of x-ray radiation probes the flow downstream of the laser. We find that the phosphor planes of the molecule in the excited state each move inward along the Pt-Pt axis by 0.26(08) angstrom, relative to its the center. Also, the platinum phosphorous bonds contract 0.050(11) angstrom. The optical transition promotes an electron from an anti-bonding orbital to a bonding orbital, and the observations indicate that this occupied bonding orbital strongly increases the overall structural bonding forces of the molecule.

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Documento generato il 18/01/20 alle ore 21:39:21