Organic Light‐Emitting Diodes Based on Silandiol‐Bay‐Bridged Perylene Bisimides
Please always quote using this URN: urn:nbn:de:bvb:20-opus-312599
- Perylene bisimides (PBIs) are among the best fluorophores but have to be enwrapped for optoelectronic applications by large and heavy substituents to prevent their ππ‐stacking, which is known to accelerate non‐radiative decay processes in the solid state. Here, light‐weight di‐tert‐butylsilyl groups are introduced to bridge 1,12‐dihydroxy and 1,6,7,12‐tetrahydroxy PBIs to afford sublimable dyes for vacuum‐processed optoelectronic devices. For both new compounds, this substitution provides a twisted and shielded perylene π‐core whose, viaPerylene bisimides (PBIs) are among the best fluorophores but have to be enwrapped for optoelectronic applications by large and heavy substituents to prevent their ππ‐stacking, which is known to accelerate non‐radiative decay processes in the solid state. Here, light‐weight di‐tert‐butylsilyl groups are introduced to bridge 1,12‐dihydroxy and 1,6,7,12‐tetrahydroxy PBIs to afford sublimable dyes for vacuum‐processed optoelectronic devices. For both new compounds, this substitution provides a twisted and shielded perylene π‐core whose, via OSiObridges, rigid structure affords well‐resolved absorption and emission spectra with strong fluorescence in solution, as well as in the solid state. The usefulness of these dyes for vacuum‐processed optoelectronic devices is demonstrated in organic light‐emitting diodes (OLEDs) that show monomer‐like emission spectra and high maximum external quantum efficiency (EQEmax) values of up to 3.1% for the doubly silicon‐bridged PBI.…
Author: | Felix Brust, Oliver Nagler, Kazutaka Shoyama, Matthias Stolte, Frank WürthnerORCiDGND |
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URN: | urn:nbn:de:bvb:20-opus-312599 |
Document Type: | Journal article |
Faculties: | Fakultät für Chemie und Pharmazie / Institut für Organische Chemie |
Language: | English |
Parent Title (English): | Advanced Optical Materials |
Year of Completion: | 2023 |
Volume: | 11 |
Issue: | 5 |
Article Number: | 2202676 |
Source: | Advanced Optical Materials 2023, 11(5):2202676. DOI: 10.1002/adom.202202676 |
DOI: | https://doi.org/10.1002/adom.202202676 |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
Tag: | organic light emitting diodes; perylene bisimide dyes; rigidification; solid‐state emission; vacuum processable |
Release Date: | 2023/06/16 |
Licence (German): | CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |