Thermochromic discotic 6-oxoverdazyls.
6-Oxoverdazyls 1b[n], substituted with three 3,4,5-trialkoxyphenyl groups (n = 8 and 10), exhibit a columnar hexagonal phase (Col(h)) below 130 °C. They display reversible color change from red to green at the transition to the isotropic phase. XRD and magnetization data do not support dimerization of the radicals in the mesophase.
Department of Chemistry, Vanderbilt University, Nashville, TN 37235, USA.
Aleksandra
A
Jankowiak
Damian
D
Pociecha
Hirosato
H
Monobe
Jacek
J
Szczytko
Piotr
P
Kaszyński