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4CzTPN-Ph, orange emitting material used in highly efficient TADF-OLED devices
Used to effectively prevent molecular interactions
4CzTPN-Ph, a well-known orange emitting material that is widely used in highly efficient TADF-OLED devices.
Comparing to 4CzTPN, the eight phenyl groups at 3,6-positions of carbazole moieties can further increase the electron-donating ability for 4CzTPN-Ph while at the same time greater steric hindrance is introduced. The increased steric hindrance can effectively prevent molecular interactions, i.e. the formation of the excimer.
With the donor-acceptor structure enabling the molecule with good two emission characteristics, 4CzTPN-Ph can also be used for both one and two-photon cellular fluorescence imaging as nanoparticles dispersed in water with good dispersibility, superior resistance against photodegradation and photobleaching and low cytotoxicity.
Guest concentration, bias current, and temperature-dependent sign inversion of magneto-electroluminescence in thermally activated delayed fluorescence devices, J. Deng et al., Sci. Rep., 7:44396 (2017); DOI: 10.1038/srep44396.
Simple structured hybrid WOLEDs based on incomplete energy transfer mechanism: from blue exciplex to orange dopant, T. Zhang et al., Sci. Rep., 5:10234 (2015); DOI: 10.1038/srep10234.
Simple-structure organic light emitting diodes: Exploring the use of thermally activated delayed fluorescence host and guest materials, Z. Liu et al., Org. Electron., 41, 237-244 (2017); doi: 0.1016/j.orgel.2016.11.010.
High-efficiency white organic light-emitting diodes using thermally activated delayed fluorescence, J. Nishide et al., Appl. Phys. Lett. 104, 233304 (2014); doi: 10.1063/1.4882456.
Self-Assembly of Electron Donor−Acceptor-Based Carbazole Derivatives: Novel Fluorescent Organic Nanoprobes for Both Oneand Two-Photon Cellular Imaging, J. Zhang et al., ACS Appl. Mater. Interfaces, 8, 18, 11355-11365 (2016); DOI: 10.1021/acsami.6b03259.
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