Crossover phase behavior (discotic to calamitic) in liquid-crystalline copper complexes. Dependence on the length and position of alkoxy chains in new polycatenar bis[5-(dialkoxybenzylidine)aminotropololonato]copper(II) complexes
Jm. Elliott et al., Crossover phase behavior (discotic to calamitic) in liquid-crystalline copper complexes. Dependence on the length and position of alkoxy chains in new polycatenar bis[5-(dialkoxybenzylidine)aminotropololonato]copper(II) complexes, INORG CHEM, 40(25), 2001, pp. 6390-6396
New polycatenar metallornesogens have been synthesized containing a tropolo
ne core joined to benzylidine terminal rings. Variation of the position, nu
mber, and nature of alkoxy substituents on the terminal rings allows for th
e control of the phase behavior of the compounds. In particular, for copper
complexes with 3,4-dialkoxy substitution, a change from calamitic to disco
tic (columnar) behavior is seen as the chain lengths are increased.