Staff Publications

Staff Publications

  • external user (warningwarning)
  • Log in as
  • language uk
  • About

    '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.

    We have a manual that explains all the features 

Record number 354678
Title Monofluorinated unsymmetrical bent-core mesogens
Author(s) Achten, R.; Smits, E.A.W.; Reddy, R.A.; Giesbers, M.; Marcelis, A.T.M.; Sudhölter, E.J.R.
Source Liquid Crystals 33 (2006)1. - ISSN 0267-8292 - p. 57 - 65.
DOI https://doi.org/10.1080/02678290500393131
Department(s) Organic Chemistry
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2006
Keyword(s) banana-shaped molecules - liquid-crystals - mesomorphic properties - lateral substituents - fluorine substituent - columnar mesophases - achiral molecules - central unit - 2,7-dihydroxynaphthalene - field
Abstract The synthesis and mesomorphic properties of 30 bent-core compounds with a fluorine substituent in one of the outer rings are reported. The banana-shaped compounds are all derived from resorcinol and contain esters as linking groups between the five aromatic rings. The different mesophases have been characterized by polarizing optical microscopy, differential scanning calorimetry, X-ray diffraction studies and electro-optical investigations. The compounds with the longer terminal chains exhibit an antiferroelectric SmCP phase. Upon introduction of a fluorine substituent the layer spacing increases, as compared with the corresponding unsubstituted compound. The introduction of one terminal vinyl group in the mono-substituted bent-core mesogens has no significant influence on the liquid crystalline properties and the switching remains antiferroelectric. Due to the introduction of the terminal double bond, these banana-shaped compounds are suitable for the preparation of siloxane polymers or attachment to a hydrogen-terminated silicon surface
Comments
There are no comments yet. You can post the first one!
Post a comment
 
Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.