Helical-chiral triphenylene liquid crystals

Klaus Praefcke; D. Blunk; A. Eckert

doi:10.1117/12.301248

1 January 1998 Helical-chiral triphenylene liquid crystals

Klaus Praefcke, D. Blunk, A. Eckert

Proceedings Volume 3319, Liquid Crystals: Chemistry and Structure; (1998) https://doi.org/10.1117/12.301248
Event: Liquid Crystals, 1997, Zakopane, Poland

Abstract

Electrophilic reactions at the molecular core of (flat) 2,3,6,7,10,11-hexa(alkoxy)triphenylene lead mainly to seven fold substituted derivatives. Surprisingly, despite their overcrowded and therefore, grossly distorted structure, these products exhibit the same type of columnar mesophase as their precursors do, however, usually wider in range which may even be more stable. Semi-empirical calculations on such novel hexaethers with one or two additional and in most cases electron withdrawing substituents reveal clearly that these new molecules are twisted due to the crowding in them. Therefore, these triphenylene derivatives are potentially helical-chiral. Attempts in connection with their resolution into the first enantiomers of this kind in triphenylene chemistry are an interesting challenge and, therefore, in progress.

Citation Download Citation

Klaus Praefcke, D. Blunk, and A. Eckert "Helical-chiral triphenylene liquid crystals", Proc. SPIE 3319, Liquid Crystals: Chemistry and Structure, (1 January 1998); https://doi.org/10.1117/12.301248

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