A study of the phase behaviour of metal-free phthalocyanine in a differential scanning calorimeter

作者: M. Füstöss-Wégner

DOI: 10.1016/0040-6031(78)85114-4

关键词: Phase (matter)Kinetic energyPhase transitionMetal freePhthalocyanineDifferential scanning calorimetryAnalytical chemistryMaterials scienceCapacitance

摘要: Abstract The phase behaviour of metal-free phthalocyanine (H 2 Pc) has been studied in a differential scanning calorimeter. effect the thermal history samples on DSC curves was investigated to obtain data concerning transition which appeared α as well β forms H Pc over termperature range from 250 340 K. To characterize at low temperatures, capacitance an Ag(H Pc)Al sandwich measured function temperature. specific heats and heat → polymorphic were measured. Kinetic parameters have derived calorimetric results.

参考文章(10)
C. H. Griffiths, M. S. Walker, A Combined Differential Thermal Analysis and Spectrophotometric Cell Review of Scientific Instruments. ,vol. 41, pp. 1313- 1315 ,(1970) , 10.1063/1.1684803
James H. Sharp, Marcel Lardon, Spectroscopic characterization of a new polymorph of metal-free phthalocyanine The Journal of Physical Chemistry. ,vol. 72, pp. 3230- 3235 ,(1968) , 10.1021/J100855A024
Mark T. Robinson, Gilbert E. Klein, Unit Cell Constants of α-Copper Phthalocyanine Journal of the American Chemical Society. ,vol. 74, pp. 6294- 6295 ,(1952) , 10.1021/JA01144A520
H.J. Borchardt, Initial reaction rates from DTA Journal of Inorganic and Nuclear Chemistry. ,vol. 12, pp. 252- 254 ,(1960) , 10.1016/0022-1902(60)80369-7
James H. Sharp, Roger L. Miller, Kinetics of the thermal .alpha.-> .beta. polymorphic conversion in metal-free phthalocyanine The Journal of Physical Chemistry. ,vol. 72, pp. 3335- 3337 ,(1968) , 10.1021/J100855A046
Emmanuel A. Lucia, Frank D. Verderame, Spectra of Polycrystalline Phthalocyanines in the Visible Region Journal of Chemical Physics. ,vol. 48, pp. 2674- 2681 ,(1968) , 10.1063/1.1669501
Jaroslav Šesták, Gunnar Berggren, Study of the kinetics of the mechanism of solid-state reactions at increasing temperatures Thermochimica Acta. ,vol. 3, pp. 1- 12 ,(1971) , 10.1016/0040-6031(71)85051-7
B. Dudreva, S. Grande, Investigation of the phase transition in different types of phthalocyanines Ferroelectrics. ,vol. 8, pp. 407- 408 ,(1974) , 10.1080/00150197408234110
Hans J. Borchardt, Farrington Daniels, The Application of Differential Thermal Analysis to the Study of Reaction Kinetics1 Journal of the American Chemical Society. ,vol. 79, pp. 41- 46 ,(1957) , 10.1021/JA01558A009