bei Google ScholarTitelangaben
Sittig, Maria ; Schmidt, Benny ; Görls, Helmar ; Bocklitz, Thomas ; Wächtler, Maria ; Zechel, Stefan ; Hager, Martin D. ; Dietzek, Benjamin:
Fluorescence upconversion by triplet–triplet annihilation in all-organic poly(methacrylate)-terpolymers.
In: Physical Chemistry Chemical Physics.
Bd. 22
(2020)
Heft 7
.
- S. 4072-4079.
ISSN 1463-9084
DOI: https://doi.org/10.1039/D0CP00232A
Abstract
Fluorescence upconversion by triplet–triplet annihilation is demonstrated for a fully polymer-integrated material, i.e. in the limit of restricted diffusion. Organic sensitizer and acceptor are covalently attached to a poly(methacrylate) backbone, yielding a metal-free macromolecular all-in-one system for fluorescence upconversion. Due to the spatial confinement of the optically active molecular components, i.e. annihilator and sensitizer, UC by TTA in the constrained polymer system in solution is achieved at exceptionally low averaged annihilator concentrations. However, the UC quantum yield in the investigated systems is found to be low, highlighting that only chromophores in specific local surroundings yield upconversion in the limit of restricted diffusion. A photophysical model is proposed taking the heterogeneous local environment within the polymers into account.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Fakultät für Mathematik, Physik und Informatik > Institut für Informatik > Lehrstuhl Künstliche Intelligenz in der Mikroskopie und Spektroskopie > Lehrstuhl Künstliche Intelligenz in der Mikroskopie und Spektroskopie - Univ.-Prof. Dr. Thomas Wilhelm Bocklitz |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Eingestellt am: | 12 Mai 2023 10:27 |
| Letzte Änderung: | 12 Mai 2023 10:27 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/76375 |