Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 360566
Title Dimer Biphenyl Liquid Crystals with Trisiloxane-Containing Spacers
Author(s) Achten, R.; Koudijs, A.; Giesbers, M.; Marcelis, A.T.M.; Sudhölter, E.J.R.
Source Molecular Crystals and Liquid Crystals 477 (2007)1. - ISSN 1542-1406 - p. 169 - 176.
Department(s) Laboratory for Organic Chemistry
Publication type Refereed Article in a scientific journal
Publication year 2007
Keyword(s) mesogenic fluorinated organosiloxanes - polar order - phase - chirality - systems - series
Abstract Dimeric biphenyl liquid crystals with trisiloxane containing spacers were studied. Both the tail lengths and the spacer lengths to a central hexamethyltrisiloxane group were varied. In most cases a SmC-phase was found with an anticlinic interlayer relation. One of the compounds appears to have a SmA-phase, which could be a de Vries SmA-phase. A few other compounds show liquid crystalline polymorphism. X-ray diffraction experiments show that the smectic layers are strongly interdigitated. The thickness of the layers is mainly dependent on the length of the spacers. The length of the terminal alkyl chains hardly influences the smectic layer thickness.
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