发光学报2025，Vol.46Issue(9)：1537-1547,11.DOI:10.37188/CJL.20250079
以苯并二噻吩衍生物为核心的D'-A-D-A-D'型红光染料制备与应用
Synthesis and Application of Benzodithiophene Derivatives Based D'A-D-A-D' Red Emitters
摘要
Abstract
Organic red emitters have shown great prospective applications in full-color displays,fluorescent probes,and photothermal therapy,et al.However,it is still challenging for organic emitters that exhibited intense red emission with a maximum emission(λem)above 680 nm in solid state.In this work,two D'-A-D-A-D'molecules with a benzodithiophene derivative core donor(D),a benzothiadiazole acceptor(A)and a N-phenyl-2-naphthyl-amine derivative peripheral electron donor(D')but differing in fluorine-free D'(RH)and fluorinated D'(RF)were synthesized.Their chemical structures were characterized and confirmed by nuclear magnetic resonance spectrosco-py and mass spectroscopy.It is found both of them presented λem>700 nm in solid films.Meanwhile,RF showed a more pronounced aggregation-induced emission enhancement effect and a higher photoluminescence quantum yield than those of RH,attributed to the fluorination induced a larger dipole moment and more twisted structure of RF.LED devices based on RH and RF doped PMMA as colour conversion layers were fabricated,respectively.The maximum brightness of RF based device reaches 2.5-fold of RH based device at a 3.8 V work voltage,and its CIE coordinates(0.70,0.27)close to standard red light of BT.2020 color gamut.This work provides a promising way for develop-ing organic red emitters with higher brightness and colour-purity.关键词
有机红光材料/苯并二噻吩/氟化/红光色纯度/红光LEDKey words
organic red emitters/benzodithiophene/fluorination/red light color purity/red LED分类
数理科学引用本文复制引用
谢天佑,石明恺,董林林,周锦鹏,贾依鑫,苗艳勤,郭鹍鹏..以苯并二噻吩衍生物为核心的D'-A-D-A-D'型红光染料制备与应用[J].发光学报,2025,46(9):1537-1547,11.基金项目
国家自然科学基金(22372114) （22372114）
山西省科技创新人才团队项目(202203021211143)Supported by National Natural Science Foundation of China(22372114) （202203021211143）
Science and Technology Innovation Talent Team Project of Shanxi Province(202203021211143) （202203021211143）
