Cristais líquidos colestéricos: a quiralidade revela as suas cores

Química Nova

Fernando Ely¹  Marcos H. Mamoru Otsuka Hamanaka¹  Alaide Pellegrini Mammana¹ 

[1],Ministério da Ciência e Tecnologia Centro de Pesquisas Renato Archer Divisão de Mostradores de InformaçãoCampinas SP ,Brasil

关键词: liquid crystals;    chirality;    thermochromic effect;   

DOI  :  10.1590/S0100-40422007000700049

来源: SciELO

【 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】

CC BY-NC   
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