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Liquid Crystals Volume 40, 2013 - Issue 3
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Original Articles

Adiabatic scanning calorimetry study of ionic liquid crystals with highly ordered crystal smectic phases

Chandra Shekhar Pati Tripathi Laboratorium voor Akoestiek en Thermische Fysica, Departement Natuurkunde en Sterrenkunde, KU Leuven, Celestijnenlaan 200D, 3001, Leuven, Belgium
,
Jan Leys Laboratorium voor Akoestiek en Thermische Fysica, Departement Natuurkunde en Sterrenkunde, KU Leuven, Celestijnenlaan 200D, 3001, Leuven, Belgium; Institute for Physical Science and Technology, University of Maryland, College Park, MD, 20742, USACorrespondence[email protected]
,
Patricia Losada-Pérez Laboratorium voor Akoestiek en Thermische Fysica, Departement Natuurkunde en Sterrenkunde, KU Leuven, Celestijnenlaan 200D, 3001, Leuven, Belgium
,
Kathleen Lava Laboratorium voor Anorganische Chemie, Departement Chemie, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
,
Koen Binnemans Laboratorium voor Anorganische Chemie, Departement Chemie, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
,
Christ Glorieux Laboratorium voor Akoestiek en Thermische Fysica, Departement Natuurkunde en Sterrenkunde, KU Leuven, Celestijnenlaan 200D, 3001, Leuven, Belgium
&
Jan Thoen Laboratorium voor Akoestiek en Thermische Fysica, Departement Natuurkunde en Sterrenkunde, KU Leuven, Celestijnenlaan 200D, 3001, Leuven, Belgium
 show all
Pages 329-338 | Received 10 Jul 2012, Accepted 03 Nov 2012, Published online: 22 Nov 2012
 
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Abstract

Adiabatic scanning calorimetry was used to study four ionic liquid crystals whose phase sequences include highly ordered crystal smectic phases (crystal smectic E or T phases). The ionic liquids were based on piperidinium or morpholinium cations with long alkyl chains; the anions were tetrafluoroborate or hexafluorophosphate. High-resolution heat capacity and enthalpy data were obtained, from which the total transition heat and latent heat for the observed phase transitions were determined. All transitions displayed a non-zero latent heat and were thus found to be first order.

View correction statement:
Adiabatic scanning calorimetry study of ionic liquid crystals with highly ordered crystal smectic phases

Acknowledgements

This research was supported by the Research Foundation Flanders (FWO) Project No. G.0492.10. CSPT is grateful to the KU Leuven Research Council for financial support via the scholarship DBOF/08/039. KL thanks the IWT-Flanders for a PhD fellowship.

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