Site-selection spectroscopy of poly(di-n-butylgermylene) (PDBG)

Autor:	Rainer F. Mahrt, Heinz Bässler, K.M. McGrane, M. Stolka
Rok vydání:	1991
Předmět:	Nuclear magnetic resonance Chemistry Excited state Relaxation (NMR) Fluorescence spectrometry Density of states General Physics and Astronomy Singlet state Physical and Theoretical Chemistry Spectroscopy Molecular physics Spectral line Fluorescence spectroscopy
Zdroj:	Chemical Physics Letters. 177:389-393
ISSN:	0009-2614
DOI:	10.1016/0009-2614(91)85071-4
Popis:	Low-temperature site-selective fluorescence spectroscopy was performed on PDBG present either as solid film or dissolved in a MTHF glass. The spectra are discussed in terms of spectral diffusion of singlet excitations within two different density-of-states (DOS) distributions. The higher-energy DOS derives from disordered chain segments that are subject to structural relaxation after excitation, while the lower-energy DOS is related to rigid ordered chain segments differing in length. The analogy with charge transport is pointed out.
Databáze:	OpenAIRE
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