Accession Number : ADP007929

Title :   Electronic Energy Transfer between Donor and Acceptor Adlayers on Single-Crystal Surfaces: Distance and Coverage Dependence,

Corporate Author : STANFORD UNIV CA DEPT OF CHEMISTRY

Personal Author(s) : Haynes, D. R. ; Tokmakoff, A. ; George, S. M.

Report Date : 22 MAY 1992

Pagination or Media Count : 4

Abstract : Electronic energy transfer in surface adlayers is a mechanism of fundamental importance to surface photochemical processes. In this study, the electronic energy transfer from a donor p-terphenyl (TP) adlayer to an acceptor 9,10-diphenylanthracene (DPA) adlayer was studied using quantum yield measurements at 30 K and 85 K. These investigations employed an A1203(0001) crystal surface as a two-dimensional support on which donor, spacer and acceptor adlayers could be sequentially adsorbed. The quantum yield measurements were performed in ultra high vacuum (UHV) utilizing laser induced fluorescence techniques.

Descriptors :   *ADATOMS, *PHOTOCHEMICAL REACTIONS, CRYSTALS, ELECTRONICS, ENERGY TRANSFER, HIGH VACUUM, LASER INDUCED FLUORESCENCE, MEASUREMENT, SURFACES, TWO DIMENSIONAL, ANTHRACENES, PHENYL RADICALS, ULTRAHIGH VACUUM.

Subject Categories : Radiation and Nuclear Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE