发光学报2026，Vol.47Issue(2)：199-210,12.DOI:10.37188/CJL.20250242
基于氟取代位点效应的铂(Ⅱ)配合物电致发光性能调控
Fluorine Substitution Site Effects on Electroluminescent Properties of Platinum(Ⅱ)Complexes
摘要
Abstract
Three new cyclometalated platinum(Ⅱ)complexes,PtB,PtB-F-2,and PtB-F-1,were designed and synthesized to systematically investigate the influence of fluorine substitution sites on their photophysical and elec-troluminescent properties.The structures of these complexes were confirmed by 1H/13C NMR and mass spectrometry.Combined experimental characterization and theoretical calculations were employed to elucidate the regulatory effect of fluorine substituents on the photophysical and electrochemical behaviors of the complexes.The results reveal that the substitution position of the fluorine atom has a pronounced impact on the emission spectra.Compared with the non-fluorinated PtB,PtB-F-2 exhibits a red-shifted emission,whereas PtB-F-1 shows a blue-shifted emission.In degassed dichloromethane solutions at room temperature,all complexes display bright green emission in the range of 505-533 nm,with photoluminescence quantum yields of 20.1％-27.2％and lifetime of 1.96-3.87 μs.When applied as the emissive dopants in organic light-emitting devices,the corresponding devices exhibit intense green elec-troluminescence with maximum external quantum efficiencies(EQEs)of 19.4％-22.2％and maximum luminance values of 24 761-30 316 cd·m-2.Among them,PtB-F-1 and its device demonstrate the best photoluminescent and electroluminescent performance.This study highlights that precise modulation of fluorine substitution sites within the PtB backbone effectively tunes the emission characteristics of Pt(Ⅱ)complexes,offering a feasible molecular design strategy for high-performance organic light-emitting materials and devices.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Key words
organic light-emitting diodes/fluorine substitution site effect/platinum(Ⅱ)complexes/electrolumines-cent properties分类
数理科学引用本文复制引用
张志标,叶子勤,檀笑风,戴雷,陈文铖,霍延平..基于氟取代位点效应的铂(Ⅱ)配合物电致发光性能调控[J].发光学报,2026,47(2):199-210,12.基金项目
国家自然科学基金(U23A20594,U22A20399) （U23A20594,U22A20399）
粤港澳大湾区(佛山)先进制造业国家卓越工程师创新研究院"揭榜挂帅"项目(JBGS2024007)Supported by National Natural Science Foundation of China(U23A20594,U22A20399) （佛山）
National Excellent Engineers Innova-tion Institute of Guangdong-Hong Kong-Macao Greater Bay Area(Foshan)Advanced Manufacturing Industry(JBGS2024007) （Foshan）
