Pressure-Temperature Phase Diagrams for four 4,4'-Dialkylbiphenyl Compounds-Reference-Cited by-同舟云学术

Pressure-Temperature Phase Diagrams for four 4,4'-Dialkylbiphenyl Compounds

Published:2002-08-01 Issue:8 Volume:57 Page:641-644
ISSN:1865-7109
Container-title:Zeitschrift für Naturforschung A
language:en
Short-container-title:

Author:

Urban Stanisław¹,Massalska-Arodź Maria²,Würflinger Albert³,Czupryński Krzysztof⁴

Affiliation:

1. M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland

2. H. Niewodniczanski Institute of Nuclear Physics, Radzikowskiego 152, 31-342 Kraków, Poland

3. Institute of Physical Chemistry II, Ruhr University, D-44780 Bochum, Germany

4. Institute of Chemistry, Military University of Technology, 00-908 Warszawa, Poland

Abstract

Cm-Cn The high pressure phase behaviour of four 4,4'-dialkylbiphenyl compounds (, m = 5, 6,7, n = 6, 7) has been studied with differential thermal analysis. The pressure dependence of the phase transitions has been determined up to 200 MPa. In one substance a pressure limited and in another a pressure induced phase was observed. Volume changes accompanying the transitions to the isotropic phase were calculated using the Clausius-Clapeyron equation and the enthalpy changes from DSC measurements at 1 atm. They are compared with the data for other two-ring compounds.

Publisher

Walter de Gruyter GmbH

Subject

Physical and Theoretical Chemistry,General Physics and Astronomy,Mathematical Physics

Link

https://www.degruyter.com/document/doi/10.1515/zna-2002-0801/pdf

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