http://orcid.org/0000-0002-2325-8560
![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
ABSTRACT
Two series of isomeric bent-core derivatives of 6-oxoverdazyl, with alkyl and partially fluorinated alkyl chains, were investigated by thermo-optical, powder X-ray diffraction and electron paramagnetic resonance methods in the pure state and binary mixtures. The results revealed that the substitution position of the arms at the verdazyl ring (1,5 vs. 1,3) strongly affects mesogenic behaviour. Steric (torsion and bending angles) and dipolar factors in both isomers are considered.
GRAPHICAL ABSTRACT
Acknowledgements
Technical help of Dr Jadwiga Szydłowska of Warsaw University in obtaining EPR spectra is acknowledged.
Disclosure statement
No potential conflict of interest was reported by the authors.
Supplemental data
Supplemental data for this article can be accessed here.
Additional information
Funding
This work was supported by the National Science Centre under grants OPUS [2014/13/B/ST5/04525] and PRELUDIUM [2016/21/N/ST5/03068].