PHASE-TRANSITION OF TCNB-NAPHTHALENE CRYSTAL PROBED BY THE CHANGES OFDOPANT EMISSION

Authors
KOZANKIEWICZ B PROCHOROW J CORVAJA C MANIERO AL
Citation
B. Kozankiewicz et al., PHASE-TRANSITION OF TCNB-NAPHTHALENE CRYSTAL PROBED BY THE CHANGES OFDOPANT EMISSION, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 230, 1993, pp. 661-664
Citations number
10
Categorie Soggetti
Crystallography
Journal title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals → ACNP
ISSN journal
1058725X
Volume
230
Year of publication
1993
Pages
661 - 664
Database
ISI
SICI code
1058-725X(1993)230:<661:POTCPB>2.0.ZU;2-W
Abstract
Optical spectroscopic studies of single crystals of tetracyanobenzene - naphthalene doped by pyrene were performed within the temperature ra nge around the ''order-disorder'' phase transition of the host crystal at 73 K. It was established (by the use of phosphorescence and EPR st udies) that the geometry of pyrene trap is much different in a low and high temperature phases, thus being sensitive probe of a change of ho st crystal structure. Activation energy and rate constant describing r eorientation of trap structure were obtained.