title: Investigations of ion transport through nanoscale polymer membranes by fluorescence quenching of CdSe/CdS quantum dot/quantum rods.
abstract: Detailed steady-state and time-resolved fluorescence quenching measurements give deep insight into ion transport through nanometer thick diblock copolymer membranes, which were assembled as biocompatible shell material around CdSe/CdS quantum dot in quantum rods. We discuss the role of polymer chain length, intermolecular cross-linking and nanopore formation by analysing electron transfer processes from the photoexcited QDQRs to Cu(II) ions, which accumulate in the polymer membrane. Fluorescence investigations on single particle level additionally allow identifying ensemble inhomogeneities.
authors.affiliation: Institute of Physical Chemistry, Grindelallee 117, 20146 Hamburg, and the Hamburg Center for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany. weller@chemie.uni-hamburg.de merkl@chemie.uni-hamburg.de.
authors.forename: Jan-Philip
authors.initials: JP
authors.lastname: Merkl
authors.affiliation: Institute of Physical Chemistry, Grindelallee 117, 20146 Hamburg, and the Hamburg Center for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany. weller@chemie.uni-hamburg.de merkl@chemie.uni-hamburg.de.
authors.forename: Christopher
authors.initials: C
authors.lastname: Wolter
authors.affiliation: Institute of Physical Chemistry, Grindelallee 117, 20146 Hamburg, and the Hamburg Center for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany. weller@chemie.uni-hamburg.de merkl@chemie.uni-hamburg.de.
authors.forename: Sandra
authors.initials: S
authors.lastname: Flessau
authors.affiliation: Institute of Physical Chemistry, Grindelallee 117, 20146 Hamburg, and the Hamburg Center for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany. weller@chemie.uni-hamburg.de merkl@chemie.uni-hamburg.de.
authors.forename: Christian
authors.initials: C
authors.lastname: Schmidtke
authors.affiliation: Institute of Physical Chemistry, Grindelallee 117, 20146 Hamburg, and the Hamburg Center for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany. weller@chemie.uni-hamburg.de merkl@chemie.uni-hamburg.de and Center for Applied Nanotechnology (CAN) GmbH, Grindelallee 117, 20146 Hamburg, Germany.
authors.forename: Johannes
authors.initials: J
authors.lastname: Ostermann
authors.affiliation: Institute of Physical Chemistry, Grindelallee 117, 20146 Hamburg, and the Hamburg Center for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany. weller@chemie.uni-hamburg.de merkl@chemie.uni-hamburg.de.
authors.forename: Artur
authors.initials: A
authors.lastname: Feld
authors.affiliation: Institute of Physical Chemistry, Grindelallee 117, 20146 Hamburg, and the Hamburg Center for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany. weller@chemie.uni-hamburg.de merkl@chemie.uni-hamburg.de.
authors.forename: Alf
authors.initials: A
authors.lastname: Mews
authors.affiliation: Institute of Physical Chemistry, Grindelallee 117, 20146 Hamburg, and the Hamburg Center for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany. weller@chemie.uni-hamburg.de merkl@chemie.uni-hamburg.de and Center for Applied Nanotechnology (CAN) GmbH, Grindelallee 117, 20146 Hamburg, Germany and Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O BOX 80203 Jeddah 21589, Saudi Arabia.
authors.forename: Horst
authors.initials: H
authors.lastname: Weller