AGGREGATES OF HEXAKIS(N-HEXYLOXY)TRIPHENYLENE SELF-ASSEMBLE IN DODECANE SOLUTION - INTERCALATION OF (-)-MENTHOL 3,5-DINITROBENZOATE INDUCESFORMATION OF HELICAL STRUCTURES

Concentrated dodecane solutions of hexakis(n-hexyloxy)triphenylene for m columnar aggregates as evidenced by optical spectroscopy. Addition o f either ethyl 3,5-dinitrobenzoate, (+)-2'-octyl 3,5-dinitrobenzoate, (-)-2'-butyl 3,5-dinitrobenzoate, or (-)-menthol 3,5-dinitrobenzoate t o these solutions results in the formation of charge-transfer complexe s as shown by examination of their optical spectra. Investigation of t he circular dichroism spectra of the charge-transfer complexes Suggest s that intercalation of the menthol ester in the columnar aggregate in duces a helical twist to the structure.