Electronic Transitions in a Classical Antiferroelectric Banana-Shaped Compound
The electronic transitions in a classical banana-shaped liquid crystal 1,3-phenylene-bis [4-(4-octylphenylimino) methyl] benzoate have been investigated by measuring its optical absorption spectra in dilute solutions of ethyl alcohol and by calculating its electronic structures with extended Hückel tight binding program. The banana-shaped compound shows strong absorptions at 240, 280, 350 nm, respectively. On the basis of the calculated electronic structures, the three strong absorptions can be assigned to the *, n*, and nn* electronic transitions in this banana-shaped compound.
Yuan Ming Huang
B. G. Zhai and Y. M. Huang, "Electronic Transitions in a Classical Antiferroelectric Banana-Shaped Compound", Key Engineering Materials, Vols. 428-429, pp. 317-321, 2010