Structural Understanding, Photoswitchability, and Supergelation of a New Class of Four Ring-Based Bent-Shaped Liquid Crystal
| Autor: | Supreet Kaur, Golam Mohiuddin, Nandiraju V. S. Rao, Santosh Prasad Gupta, Rajib Nandi, Nazma Begum, Santanu Kumar Pal |
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| Rok vydání: | 2019 |
| Předmět: |
Molecular switch
chemistry.chemical_classification Materials science 010304 chemical physics Bent molecular geometry Crystal structure 010402 general chemistry 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Photochromism chemistry.chemical_compound Crystallography chemistry Azobenzene Liquid crystal 0103 physical sciences Materials Chemistry Molecule Physical and Theoretical Chemistry Alkyl |
| Zdroj: | The Journal of Physical Chemistry B. 123:4443-4451 |
| ISSN: | 1520-5207 1520-6106 |
| DOI: | 10.1021/acs.jpcb.9b01456 |
| Popis: | Herein, we report a new type of azobenzene-based unsymmetrical bent-core molecules exhibiting photoswitchability in the liquid crystalline state, solid state, and solution state and in mixture upon UV irradiation and intense visible light. The compounds exhibited solid-state photochromism upon exposure to UV light, whereas in liquid crystalline state, reversible phase transitions were observed via both UV irradiation and intense visible light exposure. Crystal structure analysis reveals the basic structural understanding such as nonplanar bent molecular shape, antiparallel arrangement of the polar bent molecules, intra- and intermolecular hydrogen bonding, and different π-π interactions and interdigitation of long alkyl chains. The compounds are also found to act as supergelator toward various organic solvents. Hence, this is an excellent example of such potential bent-shaped liquid crystals that promise an immense perspective for device applications such as optical storage, molecular switches, etc. |
| Databáze: | OpenAIRE |
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