Effect of flexible bimesogen dopant on the stability of the anticlinic liquid-crystal phase
Artikel i vetenskaplig tidskrift, 2005

Small quantities of the floppy bimesogen di(4PPB5)3Si were dissolved in an anticlinic liquid crystal consisting of a mixture of left-handed and right-handed TFMHPOBC, with enantiomer excess X=0.2. The bimesogen dopant was found to promote anticlinic order with an anticlinic interaction coefficient per molecule udopant smaller than, but of the same order as, that of the rigid bent-core dopant P-7PIMB. For both dopants udopant was found to be much larger than that due to a pair of TFMHPOBC molecules in adjacent layers. The results are examined in terms of both the flexibility of the group linking the two legs of each dopant, as well as their chemical structure.

smectic liquid crystals

molecular orientation

liquid crystal phase transformations

isomerism

Författare

Min Hua Zhu

Rolfe G. Petschek

Charles Rosenblatt

Lachezar Komitov

Göteborgs universitet

Nils Olsson

Göteborgs universitet

Bertil Helgee

Göteborgs universitet

Chalmers, Kemi- och bioteknik, Polymerteknologi

Julie M. Kim

Mary E. Neubert

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

1539-3755 (ISSN)

Vol. 72 021702-

Ämneskategorier

Polymerkemi

Organisk kemi

Den kondenserade materiens fysik

DOI

10.1103/PhysRevE.72.021702

Mer information

Skapat

2017-10-07