Structural phase transitions and phosphorescence spectra in benzophenone

被引：19

作者：

Davydova, NA

Mel'nik, VI

Nelipovitch, KI

Drozd, M

机构：

[1] Natl Acad Sci, Inst Phys, UA-252650 Kiev, Ukraine

[2] Polish Acad Sci, Inst Low Temp & Struct Res, Wroclaw, Poland

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2000年 / 555卷

关键词：

benzophenone; differential scanning calorimetry; phase transitions; phosphorescence spectra;

D O I：

10.1016/S0022-2860(00)00601-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper we present the results of the detailed investigation of the phase transitions in benzophenone by applying differential scanning calorimetry. For the first time the full picture concerning all phase transitions which occur in benzophenone in the temperature range from 143 to 353 K was obtained. A new crystal modification gamma with melting point at 295.4 K has been found. Also the photoluminescence of each modification of benzophenone and the temperature dependences of their emission intensity have been investigated. The peculiarities observed in the emission of the beta -modification have been connected with the existence of this new gamma -modification. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：187 / 190

页数：4