基于氟取代位点效应的铂（Ⅱ）配合物电致发光性能调控

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关键词：有机发光二极管；氟取代位点效应；铂（Ⅱ）配合物；电致发光性能中图分类号：0482.31 文献标识码：ADOI：10.37188/CJL.20250242 CSTR：32170.14.CJL.20250242

Fluorine Substitution Site Effects on Electroluminescent Properties Platinum（II）Complexes

ZHANG Zhibiao'，YE Ziqin²，TAN Xiaeng2，DAI Lei²，CHEN Wenchengl，HUO Yanpingl

（1.SchoolChemicalEngineringandLightIndustry，Guangdong Technology，Guangzhou5o6，China; 2.GuangdongAglaiaOptoelectronicMaterialsCo.Ltd.，Foshan52830o，China） Corresponding Authors，E-mail：rd89@aglaia-tech.com；wencchen@gdut.edu.cn；yphuo@gdut.edu.cn

Abstract：Three new cyclometalated platinum（II） complexes，PtB，PtB-F-2，and PtB-F-1，were designed and synthesizedtosystematicallyinvestigate theinfluencefluorinesubstitution siteson theirphotophysicalandelectroluminescent properties. The structures these complexes were confirmed by 1H/13C NMR and mass spectrometry. Combinedexperimental characterizationand theoreticalcalculations were employed to elucidatetheregulatory effect fluorinesubstituents onthephotophysicaland electrochemicalbehaviors thecomplexes.Theresultsreveal that thesubstitution position thefluorineatom has apronounced impact on theemission spectra.Compared withthe non-fluorinatedPtB，PtB-F-2exhibitsared-shiftedemission，whereasPtB-F-1showsablue-shifted emission.In degassed dichloromethane solutions at room temperature，allcomplexes display bright green emission in therange 505-533 nm，with photoluminescence quantum yields 20. 1% -27. 2% and lifetime 1.96-3.87 μs .When applied astheemissivedopants inorganic light-emitingdevices，thecorrespondingdevicesexhibit intense greenelectroluminescence with maximum external quantum eficiencies （EQEs） 19.4%-22.2% and maximum luminance values 24 761-30316 cd·m-2 .Among them，PtB-F-1 and its device demonstrate the best photoluminescent and electroluminescent performance.This study highlights that precise modulationfluorine substitutionsites within the PtB backbone effectively tunes the emission characteristics Pt（II） complexes，feringa feasible molecular design strategy for high-performance organic light-emittingmaterialsand devices.

KeyWords：organiclight-emiting diodes；fluorinesubstitutionsiteeffct；platinum（II）complexes；electroluminescent properties

1引言

有机电致发光二极管（OLED）凭借其高发光效率、宽色域、低能耗等显著优势，已在高端显示与固态照明领域得到广泛应用，成为新一代光电器件的研究热点[1-4]。（剩余22688字）