Cholesteric liquid crstals: chirality shows its colors

Química Nova

Hamanaka, Marcos H. Mamoru Otsuka¹  Ministério da Ciência e Tecnologia, Campinas, Brasil¹  Ely, Fernando¹  Mammana, Alaide Pellegrini¹ 

关键词: liquid crystals;    chirality;    thermochromic effect.;   

DOI  :  10.1590/S0100-40422007000700049

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Chirality deeply impacts the macroscopic properties on all scales of the universe from elemental particles through biological structures up to astronomic systems. Specifically, chiral liquid crystals give rise to self-organized macrostructures with unparalleled properties. Here we present easy experiments with a special class of chiral liquid crystals that show temperature-induced selective reflection of light (thermochromic effect). Understanding this thermochromic effect allows undergraduate students better realize important properties of super and supramolecular systems.

【 授权许可】

Unknown