title: Highly linear self-assembled porphyrin wires.
abstract: An efficient noncovalent assembly process involving high geometrical control was applied to a linear bis(imidazolyl zinc porphyrin) 7Zn, bearing C(18) substitutents, to generate linear multiporphyrin wires. The association process is based on imidazole recognition within the cavity of the phenanthroline-strapped zinc porphyrin. In chlorinated solvents, discrete soluble oligomers were obtained after (7Zn)(n) was end-capped with a terminal single imidazolyl zinc porphyrin derivative 4Zn. These soluble species, as well as their destabilization in the presence of protic solvents, were studied by UV-visible and time-resolved luminescence. In the solid state, assemblies as long as 480 nm, which corresponds to 190 iterative units or a total of 380 porphyrins, were observed by atomic force microscopy measurements on mica. The length and linearity of the porphyrin wires obtained illustrate the potential of phenanthroline-strapped porphyrins for the directional control of self-assembly processes.
authors.affiliation: Institut de Chimie, UMR 7177 CNRS-UDS, 1 Rue Blaise Pascal, 67008 Strasbourg, France.
authors.forename: Matthieu
authors.initials: M
authors.lastname: Koepf
authors.forename: Jonas
authors.initials: J
authors.lastname: Conradt
authors.forename: Jędrzej
authors.initials: J
authors.lastname: Szmytkowski
authors.forename: Jennifer A
authors.initials: JA
authors.lastname: Wytko
authors.forename: Lionel
authors.initials: L
authors.lastname: Allouche
authors.forename: Heinz
authors.initials: H
authors.lastname: Kalt
authors.forename: Teodor Silviu
authors.initials: TS
authors.lastname: Balaban
authors.forename: Jean
authors.initials: J
authors.lastname: Weiss