SPECTRAL DIFFUSION IN AN AMORPHOUS POLYMER PROBED BY SINGLE-MOLECULE SPECTROSCOPY

Citation
J. Tittel et al., SPECTRAL DIFFUSION IN AN AMORPHOUS POLYMER PROBED BY SINGLE-MOLECULE SPECTROSCOPY, Journal of luminescence, 64(1-6), 1995, pp. 1-11
Citations number
25
Categorie Soggetti
Optics
Journal title
ISSN journal
00222313
Volume
64
Issue
1-6
Year of publication
1995
Pages
1 - 11
Database
ISI
SICI code
0022-2313(1995)64:1-6<1:SDIAAP>2.0.ZU;2-M
Abstract
We investigated the spectra of single tetra-tert-butylterrylene (TBT) molecules in the amorphous matrix poly(isobutylene) (PIB). The distrib ution of line widths of TET in PIB was measured and compared to that o f TBT in poly(ethylene). The fluorescence intensity autocorrelation fu nction as well as the two-point frequency autocorrelation function wer e determined for different single TBT molecules. Logarithmic-like deca ys of the fluorescence autocorrelation function could be reproduced by assuming a 1/R fluctuation rate distribution for the two-level-tunnel ling systems.