Aggregates of Hexakis(n-hexyloxy)triphenylene Self-Assemble in Dodecane Solution: Intercalation of (-)-Menthol 3,5-Dinitrobenzoate Induces Formation of Helical Structures
摘要:
Concentrated dodecane solutions of hexakis(n-hexyloxy)triphenylene form columnar aggregates as evidenced by optical spectroscopy. Addition of either ethyl 3,5-dinitrobenzoate, (+)-2'-octyl 3,5-dinitrobenzoate, (-)-2'-butyl 3,5-dinitrobenzoate, or (-)-menthol 3,5-dinitrobenzoate to these solutions results in the formation of charge-transfer complexes as shown by examination of their optical spectra. Investigation of the circular dichroism spectra of the charge-transfer complexes Suggests that intercalation of the menthol ester in the columnar aggregate induces a helical twist to the structure.
Aerobic recycling: A catalytic amount of a hydrazine reagent is sufficient to promote Mitsunobureactions in the presence of triphenylphosphine, an iron catalyst, and air. The active form of the catalyst, an azo species, can be readily generated by iron‐catalyzed aerobic oxidation. MS=molecular sieves, Pc=phthalocyanine.