Noncovalent Interactions as a Tool To Design New Bent-Core Liquid-Crystal Materials
| Autor: | M. Rosario de la Fuente, José Luis Serrano, M. Blanca Ros, Nélida Gimeno |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
chemistry.chemical_classification
Materials science Hydrogen bond General Chemical Engineering Bent molecular geometry General Chemistry Dielectric spectroscopy Crystallography chemistry Covalent bond Liquid crystal Materials Chemistry Non-covalent interactions Lamellar structure Chirality (chemistry) |
| Zdroj: | Chemistry of Materials. 20:1262-1271 |
| ISSN: | 1520-5002 0897-4756 |
| DOI: | 10.1021/cm701930b |
| Popis: | A versatile and straightforward approach for the design and development of structure–activity studies into bent-core liquid crystals has been investigated. Through a broad selection of carboxylic acids linked to hydrogen acceptors through hydrogen bonds, structural modifications have been made in terms of length, chirality, and the introduction of a bulky group. In this way, bent-core twins have also been synthesized and studied. The noncovalent materials prepared exhibit lamellar and also columnar B-type mesophases that have been characterized by optical microscopy, calorimetry, X-ray diffraction, and dielectric spectroscopy. These results have provided new data to increase our understanding of this attractive type of liquid crystal. Comparisons with covalent analogues have highlighted the broad possibilities of this approach. |
| Databáze: | OpenAIRE |
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