Multifunctional and Tunable Surfaces Based on Pyrene Functionalized Nanoparticles

Journal article

Publication Details

Author(s): Wittmann J, Stiegler L, Henkel C, Träg J, Götz K, Unruh T, Zahn D, Hirsch A, Guldi DM, Halik M
Journal: Advanced Materials Interfaces
Publication year: 2019
ISSN: 2196-7350


The tuning of the optical properties of pyrene, immobilized on alumina
nanoparticle surfaces, is demonstrated. To this end, phosphonic acid
functionalized pyrene derivatives are shown to self‐assemble into
stoichiometrically mixed monolayers featuring hydrophilic, hydrophobic,
or fluorophilic phosphonic acid ligands and to form defined core–shell
hybrids depending on the molecular mixing ratio and the nature of the
ligand monomer, excimer, or mutual emission of both evolved. The
spectroscopic observations are explained by the respective mobility of
the dye molecules with respect to their fixed, specific anchor points
and the resulting probability to form excimers and are supported by
molecular dynamic simulations, X‐ray reflectivity measurements, and
temperature‐dependent steady‐state fluorescence assays. In terms of an
additional tuning of the emission color change and/or the on‐off
switching of the fluorescence, the formation of core–shell–shell system
is carried out by applying amphiphiles. The general concept is fully
transferable to demobilized films of nanoparticles, thereby enabling a
switchable solid‐state surface.

FAU Authors / FAU Editors

Götz, Klaus
Lehrstuhl für Kristallographie und Strukturphysik
Guldi, Dirk Michael Prof. Dr.
Lehrstuhl für Physikalische Chemie I
Halik, Marcus Prof. Dr.
Professur für Werkstoffwissenschaften (Polymerwerkstoffe)
Henkel, Christian
Lehrstuhl für Physikalische Chemie I
Hirsch, Andreas Prof. Dr.
Lehrstuhl für Organische Chemie II
Stiegler, Lisa
Lehrstuhl für Organische Chemie II
Träg, Johannes
Professur für Theoretische Chemie
Unruh, Tobias Prof. Dr.
Professur für Nanomaterialcharakterisierung (Streumethoden)
Wittmann, Judith
Professur für Werkstoffwissenschaften (Polymerwerkstoffe)
Zahn, Dirk Prof. Dr.
Professur für Theoretische Chemie

Additional Organisation
Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)

How to cite

Wittmann, J., Stiegler, L., Henkel, C., Träg, J., Götz, K., Unruh, T.,... Halik, M. (2019). Multifunctional and Tunable Surfaces Based on Pyrene Functionalized Nanoparticles. Advanced Materials Interfaces.

Wittmann, Judith, et al. "Multifunctional and Tunable Surfaces Based on Pyrene Functionalized Nanoparticles." Advanced Materials Interfaces (2019).


Last updated on 2019-27-05 at 17:08