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Details van artikel 12 van 16 gevonden artikelen
| Titel: |
Synthesis and characterization of 3-phenyl-4[H]-4-[one]-benzopyran (isoflavone) derivatives as potential mesogens |
| Auteur: |
Chudgar, N. K. Bosco, Rajan Shah, S. N. |
| Verschenen in: |
Liquid crystals |
| Paginering: | Jaargang 10 (1991) nr. 1 pagina's 141-145 |
| Jaar: |
1991-07-01 |
| Inhoud: |
With few mesogenic chromone derivatives in the literature the synthesis of 7-[4'-n-alkyloxybenzoyloxy) isoflavones was carried out. The resulting homologous series was characterized by elemental analysis and spectroscopic techniques. The first four members of the series only exhibit a nematic phase. In addition to the nematic phase, the smectic phase commences from the pentyloxy derivative. The decyloxy and higher derivatives only exhibit a smectic phase. The smectic phase observed in the present series is the smectic A type. Differential scanning calorimetry studies served the dual purpose of confirming the microscopic transition temperatures, as well as the calculation of the enthalpies of the various phase transitions. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 12 van 16 gevonden artikelen
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