Journal
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
Volume 630, Issue 1, Pages 87-101Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/15421406.2016.1146881
Keywords
4-Alkylbenzoic acids; hydrogen bonding; liquid crystals; mechanochemistry; 4-(octyloxy)benzoic acid
Funding
- Portuguese Fundacao para a Ciencia e a Tecnologia (FCT) [PEst-OE/FIS/UI0261/2011, PEst-OE/FIS/UI0261/2014]
- [FCT-Pest-OE/UID/QUI/00313/2013]
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A molecular recognition process has been used to form new mesogenic molecular structures, where intermolecular hydrogen bonding occurs between 4-(octyloxy)benzoic acid (8BAO) and four 4-alkylbenzoic acids (nBAs, n = 2, 5, 6, 7). The synthesis of these complexes has been attained by resorting to mechanochemistry. The resulting materials have been characterized by polarizing optical thermal microscopy, differential scanning calorimetry, vibrational spectroscopy, X-ray powder diffraction, and H-1 NMR relaxometry. All the elements of the series show the formation of a mesophase. For one of the complexes, its electro-optical properties have also been assessed, resulting comparable to those of other widely used liquid crystals.
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