at Google ScholarTitle data
van Son, Martin H. C. ; Berghuis, Anton M. ; de Waal, Bas F. M. ; Wenzel, Felix ; Kreger, Klaus ; Schmidt, Hans-Werner ; Rivas, Jaime Gómez ; Vantomme, Ghislaine ; Meijer, E. W.:
Highly Ordered Supramolecular Materials of Phase-Separated Block Molecules for Long-Range Exciton Transport.
In: Advanced Materials.
Vol. 35
(2023)
Issue 25
.
- 2300891.
ISSN 1521-4095
DOI: https://doi.org/10.1002/adma.202300891
Abstract in another language
Efficient energy transport over long distances is essential for optoelectronic and light-harvesting devices. Although self-assembled nanofibers of organic molecules are shown to exhibit long exciton diffusion lengths, alignment of these nanofibers into films with large, organized domains with similar properties remains a challenge. Here, it is shown how the functionalization of C3-symmetric carbonyl-bridged triarylamine trisamide (CBT) with oligodimethylsiloxane (oDMS) side chains of discrete length leads to fully covered surfaces with aligned domains up to 125 × 70 µm2 in which long-range exciton transport takes place. The nanoscale morphology within the domains consists of highly ordered nanofibers with discrete intercolumnar spacings within a soft amorphous oDMS matrix. The oDMS prevents bundling of the CBT fibers, reducing the number of defects within the CBT columns. As a result, the columns have a high degree of coherence, leading to exciton diffusion lengths of a few hundred nanometers with exciton diffusivities (≈0.05 cm2 s−1) that are comparable to those of a crystalline tetracene. These findings represent the next step toward fully covered surfaces of highly aligned nanofibers through functionalization with oDMS.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Keywords: | alignment; diffusion; excitons; long-range transport; nanofibers |
| Institutions of the University: | Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Macromolecular Chemistry I - Univ.-Prof. Dr. Hans-Werner Schmidt Profile Fields > Advanced Fields > Polymer and Colloid Science |
| Result of work at the UBT: | No |
| DDC Subjects: | 500 Science > 500 Natural sciences 500 Science > 540 Chemistry |
| Date Deposited: | 10 Jun 2024 08:11 |
| Last Modified: | 10 Jun 2024 08:11 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/89695 |