Publications [#262813] of Tuan Vo-Dinh

Papers Published

1. Vo-Dinh, T; Suter, GW; Kallir, AJ; Wild, UP, Phosphorescence line narrowing of coronene and phenanthrene adsorbed on cellulose substrates, Journal of Physical Chemistry, vol. 89 no. 14 (January, 1985), pp. 3026-3030, American Chemical Society (ACS), ISSN 0022-3654 [doi]
   (last updated on 2024/04/23)

   Abstract:
   Phosphorescence line narrowing (PLN) of phenanthrene and coronene adsorbed on cellulose (filter paper) substrates was observed for the first time. The 457.9- and 514.5-nm lines of an argon ion laser were used to directly excite into the T1 ← S0 transitions of the molecules. The transition probability was enhanced by the external heavy-atom effect of thallium acetate impregnated on the filter paper substrate. Measurements were conducted from 4 to 300 K to investigate the effects of temperature on the phosphorescence bandwidths and to provide qualitative information on the extent of electron-phonon coupling of the guest-host systems. The phosphorescence quantum yield was not found to be significantly temperature dependent. © 1985 American Chemical Society.

   Keywords:
   adsorbed layers;molecular spectral line breadth;organic compounds;phosphorescence;polymers;radiative lifetimes;