Cristais líquidos colestéricos: a quiralidade revela as suas cores Cholesteric liquid crstals: chirality shows its colors
| Autor: | Fernando Ely, Marcos H. Mamoru Otsuka Hamanaka, Alaide Pellegrini Mammana |
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| Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Química Nova, Vol 30, Iss 7, Pp 1776-1779 (2007) |
| Druh dokumentu: | article |
| ISSN: | 0100-4042 1678-7064 |
| DOI: | 10.1590/S0100-40422007000700049 |
| Popis: | 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. |
| Databáze: | Directory of Open Access Journals |
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