title: Surface functionalization and electronic interactions of ZnO nanorods with a porphyrin derivative.
abstract: To optimize electron transfer and optoelectronic properties in nanoparticulate thin films for electronics we show the surface functionalization of ZnO nanorods by means of replacing surface active 2-[2-(2-methoxyethoxy)ethoxy]acetic acid (TODA) by a redoxactive organic component, that is, 5,10,15,20-(phenoxyacetat)-porphyrin bearing four carboxylic acids as possible ZnO anchors. Microscopy-transmission electron microscopy-and spectroscopy-optical spectroscopy-verifies the successful and homogenous integration of the porphyrin onto the surface of ZnO nanorods, a process that is facilitated by the four anchoring groups. Photophysical investigations based on emission and absorption spectroscopy prompt to distinct electronic interactions between ZnO nanorods and the porphyrins. Consequently, we performed further photophysical studies flanked by pulse radiolysis assays to corroborate the nature of the electronic interactions.
authors.affiliation: Institute of Particle Technology, Friedrich-Alexander-University Erlangen-Nuremberg , Cauerstrasse 4, 91058 Erlangen, Germany.
authors.forename: Martin
authors.initials: M
authors.lastname: Klaumünzer
authors.forename: Axel
authors.initials: A
authors.lastname: Kahnt
authors.forename: Alexandra
authors.initials: A
authors.lastname: Burger
authors.forename: Mirza
authors.initials: M
authors.lastname: Mačković
authors.forename: Corinna
authors.initials: C
authors.lastname: Münzel
authors.forename: Rubitha
authors.initials: R
authors.lastname: Srikantharajah
authors.forename: Erdmann
authors.initials: E
authors.lastname: Spiecker
authors.forename: Andreas
authors.initials: A
authors.lastname: Hirsch
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Peukert
authors.forename: Dirk M
authors.initials: DM
authors.lastname: Guldi