para-Azoxyanisole
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| para-Azoxyanisole | |
|---|---|
| Para-Azoxyanisole | |
| 1-methoxy-4-[(4-methoxyphenyl)-NNO-azoxy]benzene | |
| Other names p-Azoxyanisole | |
| style="background: #F8EABA; text-align: center;" colspan="2" | Identifiers | |
| CAS number | 1562-94-3 |
| SMILES | Script error: No such module "collapsible list". |
| style="background: #F8EABA; text-align: center;" colspan="2" | Properties | |
| Molecular formula | C14H14N2O3 |
| Molar mass | 258.27 g/mol |
| Melting point |
114.9 °C, 388 K, 239 °F |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
| Infobox references | |
para-Azoxyanisole (PAA) is a zwitterionic liquid crystal. In a solid state, it appears as a white powder, but when heated it forms a liquid crystal. As one of the first known and most readily prepared liquid crystals,[1] PAA has been played an important role in the development of liquid crystal displays.[2]
Its liquid crystal range is from 118 °C to 136 °C. The solid to nematic transition is at 118 °C and the nematic to isotropic liquid transition at 136 °C.[1]
References
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<references />, or <references group="..." />- ↑ 1.0 1.1 Shao, Y.; Zerda, T. W. (1998). "Phase Transitions of Liquid Crystal PAA in Confined Geometries". Journal of Physical Chemistry B. 102 (18): 3387–3394. doi:10.1021/jp9734437.
- ↑ Liquid Gold: The Story of Liquid Crystal Displays and the Creation of an Industry, Joseph A. Castellano, ISBN 978-9812389565
