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Titolo:
EXCITATION-ENERGY TRANSFER IN POLY(P-PHENYLPHENYLENEVINYLENE) DETERMINED BY POLARIZED FLUORESCENCE SPECTROSCOPY
Autore:
DAMERAU T; HENNECKE M;
Indirizzi:
BUNDESANSTALT MAT FORSCH & PRUFUNG,UNTER EICHEN 87 D-12205 BERLIN GERMANY BUNDESANSTALT MAT FORSCH & PRUFUNG D-12205 BERLIN GERMANY
Titolo Testata:
Journal of polymer science. Part B, Polymer physics
fascicolo: 16, volume: 33, anno: 1995,
pagine: 2219 - 2227
SICI:
0887-6266(1995)33:16<2219:ETIPD>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
EXCITED-STATE TRANSPORT; SITE-SELECTIVE FLUORESCENCE; CONCENTRATION DEPOLARIZATION; OPTICAL-PROPERTIES; POLYMER-CHAINS; SPECTRA; ABSORPTION; VINYLENE); SYSTEMS;
Keywords:
POLY(P-PHENYLPHENYLENEVINYLENE); EXCITATION ENERGY TRANSFER; POLARIZED FLUORESCENCE SPECTROSCOPY; DEPOLARIZATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
T. Damerau e M. Hennecke, "EXCITATION-ENERGY TRANSFER IN POLY(P-PHENYLPHENYLENEVINYLENE) DETERMINED BY POLARIZED FLUORESCENCE SPECTROSCOPY", Journal of polymer science. Part B, Polymer physics, 33(16), 1995, pp. 2219-2227

Abstract

Polarized fluorescence spectroscopy is used to investigate the photophysical behavior of poly(p-phenylphenylenevinylene) (PPPV) in polystyrene matrix in comparison with oligomeric model compounds. For this purpose PPPV is modeled by a chain consisting of a distribution of independent oligomeric segments. Excitation energy transfer (EET) between the segments depends on the wavelength of excitation, not only for transfer along an isolated polymer chain, but; also for intermolecular transfer at high concentration of PPPV. The spatial range of EET, as indicated by fluorescence depolarization, is reduced for excitation at the long wavelength edge of the absorption spectrum (''red-edge-effect''). (C) 1995 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 12:54:59