NMR methods of studying orientational order in the liquid crystalline and isotropic phases of mesogenic samples

Autor:	J. W. Emsley
Rok vydání:	2005
Předmět:	Materials science Liquid crystalline Mesogen Isotropy General Chemistry Nuclear magnetic resonance spectroscopy Condensed Matter Physics Condensed Matter::Soft Condensed Matter Order (biology) Liquid crystal Chemical physics Phase (matter) Molecule General Materials Science
Zdroj:	Liquid Crystals. 32:1515-1524
ISSN:	1366-5855 0267-8292
DOI:	10.1080/02678290500284512
Popis:	The understanding of how to describe the orientational order of the molecules in liquid crystalline phases, and in the isotropic phase formed by mesogens, has undergone considerable development in the past 25 years; this progress is reviewed. In parallel with the theoretical developments it has also been shown that NMR spectroscopy plays a unique role in the measurement of the orientational order of the molecules, and it is explained how biaxial ordering can be characterized for rigid molecules, and how the conformationally‐dependent order parameters necessary for flexible molecules can be obtained.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::43e6f194ab654711f812c5c86fdad13a https://doi.org/10.1080/02678290500284512 Zobrazit plný text záznamu