Novel Ionic Liquid-Crystalline Compounds Bearing Oxadiazole and Pyridinium Moieties as Prospective Materials for Optoelectronic Applications

详细信息    查看全文

• 作者：Denis Haristoy and Dimitris Tsiourvas
• 刊名：Chemistry of Materials
• 出版年：2003
• 出版时间：May 20, 2003
• 年：2003
• 卷：15
• 期：10
• 页码：2079 - 2083
• 全文大小：75K
• 年卷期：v.15,no.10(May 20, 2003)
• ISSN：1520-5002

文摘

Novel liquid-crystal materials based on 1-alkyl-4-[5-(dodecylsulfanyl)-1,3,4-oxadiazol-2-yl]pyridinium bromide derivatives were synthesized. Their thermotropic polymorphism wasinvestigated by polarizing optical microscopy and differential scanning calorimetry. Thestructures of their crystalline and smectic A phases were investigated by X-ray diffraction.The existence of thermochromic properties in the smectic phase as well as their UV-visibleand fluorescence properties were also studied. The chemical structure of the compoundsrenders these materials suitable for optoelectronic applications.