PRESSURE-INDUCED PHASE-TRANSITIONS IN 9,10-ANTHRACENE DERIVATIVES - ANTHRAQUINONE

Authors
BRILLANTE A DELLAVALLE RG FARINA R VENUTI E
Citation
A. Brillante et al., PRESSURE-INDUCED PHASE-TRANSITIONS IN 9,10-ANTHRACENE DERIVATIVES - ANTHRAQUINONE, Chemical physics, 191(1-3), 1995, pp. 177-184
Citations number
22
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics → ACNP
ISSN journal
03010104
Volume
191
Issue
1-3
Year of publication
1995
Pages
177 - 184
Database
ISI
SICI code
0301-0104(1995)191:1-3<177:PPI9D->2.0.ZU;2-C
Abstract
A pressure-induced phase transition is detected in crystals of anthraq uinone at approximate to 2.3 GPa by Raman phonon spectra. Related fluo rescence experiments indicate a phase transition mechanism similar to that recently observed in 9,10-dihalogenated anthracene derivatives, l eading to a less relaxed excimer state after the transition. Lattice d ynamics calculations under pressure reproduce the observed phase trans ition and confirm the transition mechanism.