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| Titel: |
Mesogenicity of 4-alkanoyl-4'-alkyloxybiphenyl derivatives |
| Auteur: |
Tanase, Toshinori Yano, Shinichi |
| Verschenen in: |
Liquid crystals |
| Paginering: | Jaargang 12 (1992) nr. 2 pagina's 297-303 |
| Jaar: |
1992-08-01 |
| Inhoud: |
Phase transitions of 4-alkanoyl-4'-alkyloxybiphenyl were studied by differential scanning calorimetry and optical microscopy. 4-Acetyl-4'-alkyloxybiphenyl homologues (number of carbon atoms, of n, 4'-alkyloxy group is 4-10) showed SE phases with good thermal stability, while 4-propionyl-4'-alkyloxybiphenyl homologues (n = 4-10) and 4-pentanoyl-4'-decyloxybiphenyl showed SA phases with good thermal stability. Moreover changes in the thermal stability by substitution of bulky Br, Cl or CH3 substituents into the alkanoyl groups were studied for the previously mentioned three homologues. The substitution at the α-position of the alkanoyl group was found to strikingly lower the thermal stability. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 6 van 12 gevonden artikelen
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