Time-resolved terahertz spectroscopy: polymorphic, solid state phase transitions in carbamazepine

被引：0
|
作者：
Zeitler, J. Axel [1 ,2 ,3 ,4 ]
Taday, Philip F. [4 ]
Gordon, Keith C. [5 ]
Pepper, Michael [3 ,4 ]
Rades, Thomas [2 ]
机构：
[1] Univ Cambridge, Dept Chem Engn, Pembroke St, Cambridge CB2 3RA, England
[2] Univ Otago, Sch Pharm, Dunedin, New Zealand
[3] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
[4] TeraView Ltd, Cambridge CB4 0WS, England
[5] Univ Otago, Dept Chem, Dunedin, New Zealand
来源：
2007 JOINT 32ND INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES AND 15TH INTERNATIONAL CONFERENCE ON TERAHERTZ ELECTRONICS, VOLS 1 AND 2 | 2007年
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D O I：
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The polymorphic modifications of carbamazepine show distinct spectral features in the far infrared between 2 and 130 cm(-1). Using time-resolved terahertz pulsed spectroscopy the enantiotropic solid state phase transition between two polymorphic forms was recorded. The terahertz spectra revealed that the solid state conversion follows a two step mechanism: form M sublimates and then condenses in a second step as form I. The sublimation and condensation steps follow different kinetics.
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页码：485 / +
页数：2
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