A variety of hexacyclen derivatives with aliphatic substituents have been prepared and characterized via X-ray diffraction, calorimetry, thermogravimetric analysis, and computer simulations. A subset of these compounds (2a and 2e) are seen to display a liquid crystalline mesophase, while others transform directly from the crystalline to the isotropic liquid phase. The merits of tubular and smectic liquid crystalline models for the mesophase structure are discussed.

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Relationships -(correlation of the nonlinear hyperpolarizability with the intramolecular charge-transfer transition energies of acetylenes of type (I) and (II)). -(STIEGMAN, A. E.; GRAHAM, E.; PERRY, K. J.; KHUNDKAR, L. R.; CHENG, L.-T.; PERRY, J. W.; J. Am.