%0 Journal Article %1 Brust_2022 %A Brust, Felix %A Nagler, Oliver %A Shoyama, Kazutaka %A Stolte, Matthias %A Würthner, Frank %D 2022 %I Wiley %J Adv. Optical Mater. %K myown %N 5 %R 10.1002/adom.202202676 %T Organic Light-Emitting Diodes Based on Silandiol-Bay-Bridged Perylene Bisimides %U https://doi.org/10.1002%2Fadom.202202676 %V 11 %X Perylene bisimides (PBIs) are among the best fluorophores but have to be enwrapped for optoelectronic applications by large and heavy substituents to prevent their ππ-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 OSiObridges, 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.

@article{Brust_2022, abstract = {Perylene bisimides (PBIs) are among the best fluorophores but have to be enwrapped for optoelectronic applications by large and heavy substituents to prevent their ππ-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 OSiObridges, 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.}, added-at = {2023-04-18T10:42:50.000+0200}, author = {Brust, Felix and Nagler, Oliver and Shoyama, Kazutaka and Stolte, Matthias and Würthner, Frank}, biburl = {https://www.bibsonomy.org/bibtex/2c9eb016a6fa227edf084ddcc8da6344f/wuerthner_group}, doi = {10.1002/adom.202202676}, interhash = {1ff716bce17e8794e37307e47eb6f0fc}, intrahash = {c9eb016a6fa227edf084ddcc8da6344f}, journal = {Adv. Optical Mater.}, keywords = {myown}, month = dec, number = 5, publisher = {Wiley}, timestamp = {2023-04-18T10:42:50.000+0200}, title = {Organic Light-Emitting Diodes Based on Silandiol-Bay-Bridged Perylene Bisimides}, url = {https://doi.org/10.1002%2Fadom.202202676}, volume = 11, year = 2022 }