EFFECT OF PRESSURE ON LATTICE MODES AND ELECTRONIC EXCITATIONS OF 9,10-DIIODOANTHRACENE CRYSTALS

Citation
A. Brillante et al., EFFECT OF PRESSURE ON LATTICE MODES AND ELECTRONIC EXCITATIONS OF 9,10-DIIODOANTHRACENE CRYSTALS, The Journal of chemical physics, 107(12), 1997, pp. 4628-4634
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
ISSN journal
0021-9606
Volume
107
Issue
12
Year of publication
1997
Pages
4628 - 4634
Database
ISI
SICI code
0021-9606(1997)107:12<4628:EOPOLM>2.0.ZU;2-K
Abstract
We have measured Raman, optical absorption, and fluorescence spectra o f 9, 10-diiodoanthracene (DIA) crystals as a function of hydrostatic p ressure. Unlike analogous anthracene derivatives with similar quasi-on e-dimensional stacking of molecules, the ambient pressure crystal stru cture remains stable up to at least 20 GEPa. Lattice dynamics calculat ions, based on intermolecular potentials, reproduce well the structura l parameters at zero pressure and the pressure dependence of the inter molecular Raman-active phonons. An explanation is given for the unusua l stability of the one-dimensional molecular packing in DIA. (C) 1997 American Institute of Physics.