期刊
JOURNAL OF CHEMICAL SCIENCES
卷 127, 期 10, 页码 1831-1838出版社
INDIAN ACAD SCIENCES
DOI: 10.1007/s12039-015-0949-0
关键词
Schiff's base; 1,3,4-oxadiazoles; 1,3,4-thiadiazoles; liquid crystals
资金
- University Grants Commission, New Delhi, Government of India [39-691/2010 (SR)]
Two series of bent shaped 1,3,4-oxadiazole/thiadiazole heterocyclic ring containing liquid crystalline (LC) compounds were synthesized and characterized by FT-IR, H-1, C-13-NMR and ESI-Mass spectroscopic techniques. Liquid crystal properties were investigated by polarized optical microscopy and differential scanning calorimetry. All the compounds exhibited mesophases such as nematic, smectic A and smectic C phases. The liquid crystalline effects were ascertained by changing the central atom in the heterocyclic ring and by increasing the length of the terminal alkyloxy chains which bring considerable improvements on the mesomorphic properties. The absorption and emission spectral studies of all the compounds were investigated and confirmed.
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