A donor-acceptor 10-cycloparaphenylene and its use as an emitter in an organic light-emitting diode
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Here, we explored the possibility of using cycloparaphenylenes (CPP) within a donor–acceptor TADF emitter design. 4PXZPh-CPP contains four electron-donating moieties connected to a CPP. In the 15 wt % doped in CzSi film, 4PXZPh-CPP showed sky-blue emission with λPL = 475 nm, ΦPL = 29%, and triexponential emission decays with τPL of 4.4, 46.3, and 907.8 ns. Solution-processed OLEDs using 4PXZPh-CPP exhibited sky-blue emission with an λEL of 465 nm and an EQEmax of 1.0%.
Chen , D , Wada , Y , Kusakabe , Y , Kayahara , E , Sun , L , Suzuki , K , Tanaka , H , Yamago , S , Kaji , H & Zysman-Colman , E 2023 , ' A donor-acceptor 10-cycloparaphenylene and its use as an emitter in an organic light-emitting diode ' , Organic Letters , vol. Articles ASAP . https://doi.org/10.26434/chemrxiv-2022-41pf6 , https://doi.org/10.1021/acs.orglett.3c00127
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DescriptionWe thank JSPS Core-to-Core Program and International Joint Usage/Research Program of Institute for Chemical Research, Kyoto University (grant #2020-37 and 2021-37) for financial support. The St Andrews team would also like to thank EPSRC (EP/P010482/1) for financial support. D.C. thanks the China Scholarship Council (No. 201603780001). The Kyoto team would like to thank JSPS KAKENHI Grant Numbers JP20H05840 (Grant-in-Aid for Transformative Research Areas, “Dynamic Exciton”).
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