title: LED based on alternating benzene-furan oligomers.
abstract: A series of conjugated-chain compounds which contain two furan units and more than three other aromatic ring units were synthesized by two different methods, their UV-visible absorption coefficient (ε), maximum absorption wavelengths (λa), fluorescence emission wavelengths (λe), stokes shift and quantum yields (Φ) were determined, the relationships between the molecular structures and the effects of spectral behaviors were discussed. Meanwhile, the excitation spectrum and emission spectrum of 2b and 2d in solid and in ethyl acetate were respectively recorded, the thermal stability of 2b and 2d was evaluated, and the fluorescence emission behaviors of two light emitting diodes, fabricated with 2b and 2d as phosphors, were investigated. The results showed that most of target compounds can perform high fluorescence emission ability, compounds 2b and 2d can perform higher thermal stability under 350°C and they are suitable for making light emitting diode as phosphors, the light emitting diodes fabricated with 2b and 2d can show higher fluorescence emission ability. Therefore, those compounds are worthy of further being developed as fluorescent emission materials.
authors.affiliation: School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China; China National Analysis Center, Guangzhou 510070, PR China.
authors.forename: Senchuan
authors.initials: S
authors.lastname: Song
authors.affiliation: China National Analysis Center, Guangzhou 510070, PR China.
authors.forename: Jianghan
authors.initials: J
authors.lastname: Chen
authors.affiliation: China National Analysis Center, Guangzhou 510070, PR China.
authors.forename: Wenlong
authors.initials: W
authors.lastname: Pan
authors.affiliation: School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China. Electronic address: yjhxhc@mail.sysu.edu.cn.
authors.forename: Hucacan
authors.initials: H
authors.lastname: Song
authors.affiliation: Guangdong Synyoo Materials Limited, Foshan 528051, PR China; Guangdong Petrochemical Research Institute, Guangzhou 510665, PR China.
authors.forename: Huahong
authors.initials: H
authors.lastname: Shi
authors.affiliation: Guangdong Synyoo Materials Limited, Foshan 528051, PR China; Guangdong Petrochemical Research Institute, Guangzhou 510665, PR China.
authors.forename: Yuliang
authors.initials: Y
authors.lastname: Mai
authors.affiliation: Guangdong Synyoo Materials Limited, Foshan 528051, PR China; Guangdong Petrochemical Research Institute, Guangzhou 510665, PR China.
authors.forename: Wu
authors.initials: W
authors.lastname: Wen
keywords: Alternating benzene-furan oligomers; Fluorescence emission behaviors; Light emitting diodes (LED); Structure-effects relationships; Synthesis