Surface Functionalization and Electronic Interactions of ZnO Nanorods with a Porphyrin Derivative

Autor:	Rubitha Srikantharajah, Corinna Münzel, Martin Klaumünzer, Alexandra Burger, Erdmann Spiecker, Wolfgang Peukert, Dirk M. Guldi, Mirza Mačković, Andreas Hirsch, Axel Kahnt
Rok vydání:	2014
Předmět:	chemistry.chemical_compound Electron transfer Materials science chemistry Absorption spectroscopy Alkoxy group Surface modification General Materials Science Nanorod Thin film Photochemistry Porphyrin Derivative (chemistry)
Zdroj:	ACS Applied Materials & Interfaces. 6:6724-6730
ISSN:	1944-8252 1944-8244
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e03ee61c9d3fbca2e0abce34c20e5f5 https://doi.org/10.1021/am5004552 Zobrazit plný text záznamu