Abstract
Self-assembled tubular structures capable of binding and conducting metal cations are of interest in the fabrication of permeation-selective membranes and the design of supramolecular devices, such as nanoscale transducers.1–3 Artificial ion-transport assemblies can also serve as models for investigating structure and function of natural transmembrane pores and channels, such as Gramicidin aggregates.4,5 Torands6–14 are a recently explored class of relatively rigid, planar ligands capable of coaxial stacking; molecular coils 15,16 are analogous compounds capable of multiple-helical aggregation. Figure 1 shows the key compounds of interest in this chapter, which begins by reviewing the metal complexation and aggregation behavior of torand 1. The formation of double-helical metal complexes by molecular coils 3 and 4 is then discussed. The chapter concludes with the synthesis of triaryltorands (2) in a planned approach to novel tubular mesophases.1
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Bell, T.W., Heiss, A.M., Jousselin, H., Ludwig, R.T. (1995). Toward Columns and Channels from Torands and Molecular Coils. In: Siegel, J.S. (eds) Supramolecular Stereochemistry. NATO ASI Series, vol 473. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0353-4_19
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DOI: https://doi.org/10.1007/978-94-011-0353-4_19
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