Morphology, Mesophase, and Molecular Order of 3-Hexyl Thiophene-Based π-Conjugated Mesogens
| Autor: | Y. Santhosh Kumar Reddy, Tanneru Narasimhaswamy, Srinivasan Sampath, Nitin P. Lobo |
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| Rok vydání: | 2016 |
| Předmět: |
Organic electronics
Materials science Supramolecular chemistry Mesophase 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Organic semiconductor Crystallography Crystallinity chemistry.chemical_compound General Energy Differential scanning calorimetry chemistry Liquid crystal Thiophene Organic chemistry Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | The Journal of Physical Chemistry C. 120:17960-17971 |
| ISSN: | 1932-7455 1932-7447 |
| Popis: | Molecular materials that are built with π-conjugated moieties which self-assemble to form organic semiconductors have gained greater recognition for their applications in organic electronics. By judicious molecular design, liquid crystallinity can be incorporated into them to realize π-conjugated liquid crystals. In this work, we report 3-hexyl thiophene-based π-conjugated liquid crystals in which alkoxy biphenyls are introduced into the core by palladium acetate-catalyzed direct arylation. The π-conjugated molecules exhibit self-assembly in solution and enantiotropic nematic phase upon melting. Therefore, the morphological studies of molecules in solution by atomic force microscopy and scanning electron microscopy, mesophase properties by hot-stage optical polarizing microsocpe and differential scanning calorimetry, as well as molecular order by solid-state 13C NMR is performed. The morphological studies indicate the formation of supramolecular fibers due to the self-assembly of molecules through assiste... |
| Databáze: | OpenAIRE |
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