Abstract

Achiral Bent Core Mesogens (BCMs) are an exciting class of potentially useful material that catch special attention in the last decade. The newly synthetic compound 5-hexadecyloxy-2-[(E)-({4-[5-(4-octyloxyphenyl)-1,3,4-oxadiazol-2-yl] phenyl}imino)methyl]phenol, named as ABC, is a Schiff base derivative. Having both flexible hydrophobic and rigid hydrophilic part it shows a surface-active liquid crystalline property. This study is based on the Langmuir–Blodgett (LB) thin film fabricated with this molecule. The spectral study, showing intense bathochromic shift of characteristic peaks, reveals that the J-aggregation of molecules in the film in comparison to its solution. Atomic force microscopic (AFM) and scanning electron microscopic (SEM) images reveal the occurrence of unique unsymmetrical nano-size cluster formation in pure ABC thin film as well as mixed thin film with Behenic acid (BA) as supporting matrix.

摘要

非手性弯曲核心介晶 (BCM) 是一类令人兴奋的潜在有用材料，在过去十年中受到特别关注。新合成的化合物5-十六烷氧基-2-[(E)-({4-[5-(4-辛氧基苯基)-1,3,4-恶二唑-2-基]苯基}亚氨基)甲基]苯酚，命名为ABC 是席夫碱的衍生物。具有柔性疏水部分和刚性亲水部分，它显示出表面活性液晶性质。这项研究基于用这种分子制造的 Langmuir-Blodgett (LB) 薄膜。光谱研究显示特征峰有强烈的红移，表明J-与溶液相比，膜中分子的聚集。原子力显微镜 (AFM) 和扫描电子显微镜 (SEM) 图像揭示了在纯 ABC 薄膜以及以山嵛酸 (BA) 作为支撑基质的混合薄膜中发生了独特的不对称纳米级簇形成。