Oriented Monolayers Prepared from Lyotropic Chromonic Liquid Crystal

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• 作者：Tod Schneider ; Kateryna Artyushkova ; Julia E. Fulghum ; Laurie Broadwater ; Ashley Smith ; and Oleg D. Lavrentovich
• 刊名：Langmuir
• 出版年：2005
• 出版时间：March 15, 2005
• 年：2005
• 卷：21
• 期：6
• 页码：2300 - 2307
• 全文大小：818K
• 年卷期：v.21,no.6(March 15, 2005)
• ISSN：1520-5827

文摘

We use a layer-by layer electrostatic self-assembly technique to obtain in-plane oriented aggregates ofmesogenic dye molecules cast from lyotropic chromonic liquid crystals (LCLCs) on mica substrates. Theaqueous solutions of dye used for deposition are in the nematic phase. Atomic force microscopy and X-rayphotoelectron spectroscopy of the dried film reveal that the LCLC molecules adsorb at the charged substratepreserving ordered aggregates of elongated shape characteristic of the nematic phase in the aqueoussolution. These elongated aggregates of LCLC molecules form films with in-plane orientational order andare compositionally distinct from the substrate.