title: Helical polymer-anchored porphyrin nanorods.
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.
authors.affiliation: University of Nijmegen, Department of Organic Chemistry, Toernooiveld 1, The Netherlands.
authors.forename: Pieter A J
authors.initials: PA
authors.lastname: de Witte
authors.forename: Mariangela
authors.initials: M
authors.lastname: Castriciano
authors.forename: Jeroen J L M
authors.initials: JJ
authors.lastname: Cornelissen
authors.forename: Luigi
authors.initials: L
authors.lastname: Monsù Scolaro
authors.forename: Roeland J M
authors.initials: RJ
authors.lastname: Nolte
authors.forename: Alan E
authors.initials: AE
authors.lastname: Rowan