Liquid crystalline properties of 4-hexyl-4'-alkoxyazobenzenes and 4-heptyl-4'-alkoxyazobenzenes

J. Zienkiewicz; Zbigniew Galewski

doi:10.1117/12.301249

1 January 1998 Liquid crystalline properties of 4-hexyl-4'-alkoxyazobenzenes and 4-heptyl-4'-alkoxyazobenzenes

J. Zienkiewicz, Zbigniew Galewski

Proceedings Volume 3319, Liquid Crystals: Chemistry and Structure; (1998) https://doi.org/10.1117/12.301249
Event: Liquid Crystals, 1997, Zakopane, Poland

Abstract

Two families of liquid crystalline compounds: 4-hexyl-4-alkoxyazobenzenes and 4-heptyl-4'-alkoxyawbenzenes have been synthesised for alkyl chain from methoxy up to octadecyloxy. On the base of the DSC calorimetry and polarizing microscopy rich polymorphism was detected. Maximum four mesophases were found: nematic, smectic A, smectic C and smectic I. The interesting even-odd effects for temperature of clearing was observed similar to the other families of 4-alkyl4'-allcyloxyazobenzenes. The phase diagram sequence and temperatures of phase transition are discussed and there are compared their entropy effects to those of the other azobenzene liquid crystalline compounds.

Citation Download Citation

J. Zienkiewicz and Zbigniew Galewski "Liquid crystalline properties of 4-hexyl-4'-alkoxyazobenzenes and 4-heptyl-4'-alkoxyazobenzenes", Proc. SPIE 3319, Liquid Crystals: Chemistry and Structure, (1 January 1998); https://doi.org/10.1117/12.301249

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