Twisted nematic phases induced by atropoisomers

Peter V. Shibaev; R. A. Vinokur; H.-J. Deussen; T. Bjornholm; K. Schaumburg

doi:10.1117/12.301282

1 January 1998 Twisted nematic phases induced by atropoisomers

Peter V. Shibaev, R. A. Vinokur, H.-J. Deussen, T. Bjornholm, K. Schaumburg

Proceedings Volume 3319, Liquid Crystals: Chemistry and Structure; (1998) https://doi.org/10.1117/12.301282
Event: Liquid Crystals, 1997, Zakopane, Poland

Abstract

The helical twisting power (HTP) of a homologies series of novel series of novel chiral binarphthol (BN) derivatives in open and bridged forms has been studied int ow different nematic solvents. The direct correlation between molecular structure and HTP was revealed: increasing the length of the substituents in 6,6' positions leads to the increasing of helical twisting power. Open-chain compounds display a significant decrease of twisting power on heating. The decrease of HTP is explained in terms of changing of the molecular conformation. The conformational properties of BN derivatives dissolved in a pentylcyanobiphenyl liquid crystalline (LC) matrix were determined by molecular dynamics simulation. Due to the influence of intermolecular interactions between the molecules of the LC matrix and the BN molecules, the conformations of the BN molecules in LC cell are found to change from transoid to cisoid on heating that results in decrease of observed HTP.

Citation Download Citation

Peter V. Shibaev, R. A. Vinokur, H.-J. Deussen, T. Bjornholm, and K. Schaumburg "Twisted nematic phases induced by atropoisomers", Proc. SPIE 3319, Liquid Crystals: Chemistry and Structure, (1 January 1998); https://doi.org/10.1117/12.301282

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available