Abstract
A new non-mesogenic Schiff-based carboxylic acid, viz. 4-((hexylimino)methyl)benzoic acid (HIMB), is synthesized and is used to prepare the binary mixtures with mesogenic 4-n-alkyloxybenzoic acids (nOBAs, where n = 3, 4, 5, 7, 8, 9 and 12) in 1:1 molar ratio. The mesomorphism in HIMB and nOBA mixtures is studied by polarizing optical microscopy and differential scanning calorimetry. The mesomorphic thermal stabilities of these mixtures are found to vary with those of the nOBAs. The results are discussed with the reported mixtures of nOBAs with other Schiff-based pyridyl moieties, which are found to exhibit new phase variants and mesomorphic thermal stabilities. The phase transition temperatures and the enthalpy changes at the phase transitions are discussed in comparison with the other similar binary mixtures. The effects of intermolecular interactions on mesomorphism are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 339-345 |
| Number of pages | 7 |
| Journal | Journal of Thermal Analysis and Calorimetry |
| Volume | 129 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 01-07-2017 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Physical and Theoretical Chemistry
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Mesomorphism in binary mixtures of 4-((hexylimino)methyl)benzoic acid and 4-alkyloxybenzoic acids. / Bhagavath, Poornima; Mahabaleshwara, S.
In: Journal of Thermal Analysis and Calorimetry, Vol. 129, No. 1, 01.07.2017, p. 339-345.Research output: Contribution to journal › Article
TY - JOUR
T1 - Mesomorphism in binary mixtures of 4-((hexylimino)methyl)benzoic acid and 4-alkyloxybenzoic acids
AU - Bhagavath, Poornima
AU - Mahabaleshwara, S.
PY - 2017/7/1
Y1 - 2017/7/1
N2 - A new non-mesogenic Schiff-based carboxylic acid, viz. 4-((hexylimino)methyl)benzoic acid (HIMB), is synthesized and is used to prepare the binary mixtures with mesogenic 4-n-alkyloxybenzoic acids (nOBAs, where n = 3, 4, 5, 7, 8, 9 and 12) in 1:1 molar ratio. The mesomorphism in HIMB and nOBA mixtures is studied by polarizing optical microscopy and differential scanning calorimetry. The mesomorphic thermal stabilities of these mixtures are found to vary with those of the nOBAs. The results are discussed with the reported mixtures of nOBAs with other Schiff-based pyridyl moieties, which are found to exhibit new phase variants and mesomorphic thermal stabilities. The phase transition temperatures and the enthalpy changes at the phase transitions are discussed in comparison with the other similar binary mixtures. The effects of intermolecular interactions on mesomorphism are discussed.
AB - A new non-mesogenic Schiff-based carboxylic acid, viz. 4-((hexylimino)methyl)benzoic acid (HIMB), is synthesized and is used to prepare the binary mixtures with mesogenic 4-n-alkyloxybenzoic acids (nOBAs, where n = 3, 4, 5, 7, 8, 9 and 12) in 1:1 molar ratio. The mesomorphism in HIMB and nOBA mixtures is studied by polarizing optical microscopy and differential scanning calorimetry. The mesomorphic thermal stabilities of these mixtures are found to vary with those of the nOBAs. The results are discussed with the reported mixtures of nOBAs with other Schiff-based pyridyl moieties, which are found to exhibit new phase variants and mesomorphic thermal stabilities. The phase transition temperatures and the enthalpy changes at the phase transitions are discussed in comparison with the other similar binary mixtures. The effects of intermolecular interactions on mesomorphism are discussed.
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U2 - 10.1007/s10973-017-6105-y
DO - 10.1007/s10973-017-6105-y
M3 - Article
VL - 129
SP - 339
EP - 345
JO - Journal of Thermal Analysis and Calorimetry
JF - Journal of Thermal Analysis and Calorimetry
SN - 1388-6150
IS - 1
ER -