Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.366, 2107-2114, 2001
The electronic absorption spectra and molecular aggregate formation in vacuum deposited films of mesogenic cyanobiphenyls and their solutions
Electronic absorption spectra of mesogenic 4-pentyl-4 ' -cyanobiphenyl (5CB), 4-octyl-4 ' cyanobiphenyl (8CB) and 4-octyloxy- 4 ' -cyanobiphenyl (8OCB) films produced by cyanobiphenyl molecular vapor deposition were measured. The appearance of the spectral changes during annealing and dissolution of cyanobiphenyl film samples are discussed assuming molecular dimerization and H-aggregate formation.