Affordable Access

Publisher Website

Spectral diffusion in solvent-filled AlPO4-5 molecular sieves: modification of amorphous phase properties by spatial restrictions

Authors
Journal
Chemical Physics Letters
0009-2614
Publisher
Elsevier
Publication Date
Volume
355
Identifiers
DOI: 10.1016/s0009-2614(02)00116-1
Disciplines
  • Chemistry

Abstract

Abstract We report on persistent spectral hole-burning studies of thiazine and oxazine dyes encapsulated in an AlPO 4-5 aluminophosphate molecular sieve. A non-photochemical hole-burning mechanism is provided by small additional solvent molecules, e.g. glassy ethanol or amorphous water, in the pore system. Hole-burning efficiency and spontaneous hole-filling are in the typical range of glassy bulk systems. However, spectral diffusion is reduced drastically in the solvent-filled molecular sieve compared to the corresponding bulk glass. Based on previous work by the Fayer group [J. Chem. Phys. 92 (1990) 4125; Chem. Phys. Lett. 168 (1990) 371] this finding is discussed as an example of spatial restrictions to the solvation shell around the dye molecules.

There are no comments yet on this publication. Be the first to share your thoughts.