Optical and thermal characterization of thermotropic hydrogen bonded liquid crystal mixture
| Autor: | S. Radjarejesri, Ramya A, Balasubramanian, Vijayakumar V.N |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Phase transition Materials science Hydrogen bond Mesogen Transition temperature Analytical chemistry 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Thermotropic crystal Liquid crystal Phase (matter) 0103 physical sciences 0210 nano-technology Spectroscopy |
| Zdroj: | Materials Today: Proceedings. 47:1731-1735 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2021.02.323 |
| Popis: | A novel intermolecular hydrogen-bonded liquid crystal mixture (HBLC) has been synthesized from non-mesogenic itaconic acid (IA) and mesogenic 4-undecyloxybenzoic acid (11OBA). The formation of hydrogen bond has been analyzed by using spectroscopic studies. Polarizing optical microscope (POM) confirms the existence of liquid crystal phase corresponding to the transition temperature. LC transition temperature, enthalpy values, stability factors, and thermal width have been calculated using thermal analyzer. Band gap energies are evaluated by using ultraviolet visible and photoluminescence spectroscopy studies. The resultant POM and DSC studies reveal the present mixture enclose nematic and smectic mesogenic phase transitions. Induced thermoluminescence with parachromic variations are observed and represented as novel detection in the present HBLC mixture. This synthesized mixture is more suitable for HD display devices. |
| Databáze: | OpenAIRE |
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