Porphyrins are large redox-active π-systems, which makes them interesting components for the construction of molecular wires. Template-directed synthesis can be used to prepare porphyrin nanorings with diameters in the range 2–20 nm, such as the 12-porphyrin nanoring illustrated below (Figure 1). This talk will summarize recent work on charge transport and charge delocalization through these molecules.
References
[1] ‘Bias-driven conductance increase with length in porphyrin tapes’, E. Leary, et al. J. Am. Chem. Soc. 2018, 140, 12877–12883.
[2] ‘Electronic delocalization in the radical cations of porphyrin oligomer molecular wires’, M. D. Peeks, et al. J. Am. Chem. Soc. 2017, 139, 10461–10471.
[3] ‘Aromatic and antiaromatic ring currents in a molecular nanoring’ M. D. Peeks, et al. Nature 2017, 541, 200–203.
[4] ‘Supramolecular nesting of cyclic polymers’, D. V. Kondratuk, et al. Nat. Chem. 2015, 7, 317-322.
[5] ‘Long-range electron tunnelling in oligo-porphyrin molecular wires’, G. Sedghi, et al. Nat. Nanotech. 2011, 6, 517–523.
[6] ‘Vernier templating and synthesis of a 12-porphyrin nano-ring’, M. C. O'Sullivan, et al. Nature 2011, 469, 72–75.