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Wenzel, Felix ; Stäter, Sebastian ; O’Reilly, Padraic ; Kreger, Klaus ; Köhler, Jürgen ; Hildner, Richard ; Schmidt, Hans-Werner:
Isolated Hierarchical Superstructures with Highly Oriented P3HT Nanofibers.
In: Macromolecules.
(2024)
.
ISSN 1520-5835
DOI: https://doi.org/10.1021/acs.macromol.4c01618
Abstract
The preparation of supramolecular mesoscale structures with high intrinsic order and orientation based on π-conjugated systems is of fundamental interest for studying their photophysical characteristics as well as for potential applications in (nano)photonics. However, the preparation, isolation and transfer of individual structures to substrates without compromising their structural integrity is challenging. Here we report on the controlled formation of hierarchical superstructures based on poly(3-hexylthiophene) (P3HT) comprising highly ordered and oriented P3HT nanofibers with lengths of up to 20 μm via a two-step self-assembly process. In the first step, we prepare defined supramolecular ribbons of N,N′-1,4-phenylenebis[4-pyridinecarboxamide]. In the second step, these ribbons act as efficient nucleation sites for the transcrystallization of P3HT into μm-long nanofibers from solution. The resulting shish-kebab-like superstructures can be purified and deposited on substrates without compromising their structural integrity. The densely packed and well-arranged P3HT nanofibers within the isolated superstructures feature a high orientational order parameter close to one up to a distance of 15 μm away from the initial nucleation sites. A systematic variation of photoluminescence spectra along the P3HT nanofibers in isolated superstructures indicates an increasing defect density toward the nanofiber end due to fractionation during growth. We anticipate that these findings can be transferred to designing and realizing superstructures as components for nanophotonic devices or light-harvesting antennae.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Lehrstuhl Experimentalphysik IX - Spektroskopie weicher Materie > Lehrstuhl Experimentalphysik IX - Spektroskopie weicher Materie - Univ.-Prof. Dr. Jürgen Köhler Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Ehemalige ProfessorInnen > Lehrstuhl Makromolekulare Chemie I - Univ.-Prof. Dr. Hans-Werner Schmidt Forschungseinrichtungen > Institute in Verbindung mit der Universität > Bayerisches Polymerinstitut (BPI) |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Eingestellt am: | 06 Nov 2024 06:33 |
| Letzte Änderung: | 06 Nov 2024 06:33 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/90954 |