Helical polymer-anchored porphyrin nanorods |
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| Authors: | de Witte Pieter A J Castriciano Mariangela Cornelissen Jeroen J L M Monsù Scolaro Luigi Nolte Roeland J M Rowan Alan E |
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| Institution: | University of Nijmegen, Department of Organic Chemistry, Toernooiveld 1, The Netherlands. |
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| Abstract: | Well-defined arrays of porphyrins attached to a rigid polyisocyanide backbone have been synthesized and their physical and optical properties studied. The helical polymers are rigidified by an inter-side chain hydrogen-bonded network and have an average mass of 1.1 x 10(6) Daltons and a polydispersity index of 1.3. Each of the polymer strands contains four columns of around 200 stacked porphyrins and has an overall length of 87 nm. The chromophores are arranged in a left-handed helical fashion along the polymer backbone. Photophysical studies show that at least 25 porphyrins within one column are excitationally coupled. |
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| Keywords: | chirality helical structures nanostructures polymers porphyrin arrays |
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