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Helical Polymer-Anchored Porphyrin Nanorods

Authors

  • Pieter A. J. de Witte,

    1. University of Nijmegen Department of Organic Chemistry, Toernooiveld 1 6525 ED Nijmegen, The Netherlands, Fax: (+31) 24-3652929
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  • Mariangela Castriciano Dr.,

    1. University of Messina Dipartimento di Chimica Inorganica Chimica Analitica e Chimica Fisica Salita Sperone n.31 98166, V.ll S.Agata, ISMN-CNR Sezione di Messina and INFM, Unita′ di Messina, Messina, Italy
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  • Jeroen J. L. M. Cornelissen Dr.,

    1. University of Nijmegen Department of Organic Chemistry, Toernooiveld 1 6525 ED Nijmegen, The Netherlands, Fax: (+31) 24-3652929
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  • Luigi Monsù Scolaro Prof.,

    1. University of Messina Dipartimento di Chimica Inorganica Chimica Analitica e Chimica Fisica Salita Sperone n.31 98166, V.ll S.Agata, ISMN-CNR Sezione di Messina and INFM, Unita′ di Messina, Messina, Italy
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  • Roeland J. M. Nolte Prof. Dr.,

    1. University of Nijmegen Department of Organic Chemistry, Toernooiveld 1 6525 ED Nijmegen, The Netherlands, Fax: (+31) 24-3652929
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  • Alan E. Rowan Dr.

    1. University of Nijmegen Department of Organic Chemistry, Toernooiveld 1 6525 ED Nijmegen, The Netherlands, Fax: (+31) 24-3652929
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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 1.1×106 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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