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Highly Linear Self-Assembled Porphyrin Wires

Koepf, M. 1; Conradt, J. 2; Szmytkowski, J. 2; Wytko, J. A.; Allouche L.; Kalt, H. 2; Balaban, T. S.; Weiss, J.
1 Institut für Angewandte Physik (APH), Karlsruher Institut für Technologie (KIT)
2 Karlsruher Institut für Technologie (KIT)

Abstract:

An efficient noncovalent assembly process involving high geometrical control was applied to a linear bis(imidazolyl zinc porphyrin) 7Zn, bearing C18 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.


Scopus
Zitationen: 23
Web of Science
Zitationen: 22
Zugehörige Institution(en) am KIT Institut für Angewandte Physik (APH)
Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
Karlsruhe School of Optics & Photonics (KSOP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2011
Sprache Englisch
Identifikator ISSN: 0020-1669
KITopen-ID: 1000027101
Erschienen in Inorganic Chemistry
Verlag American Chemical Society (ACS)
Band 50
Heft 13
Seiten 6073-6082
Nachgewiesen in Web of Science
Scopus
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