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Synthesis and Luminescence Properties of a Novel Eu 3+ ‐Containing Polysiloxane Copolymer
Author(s) -
Li Dongxin,
Jia Jing,
Wang Bin,
Jia Husheng,
Zhang Aiqin,
Liu Xuguang,
Shen Qianqian,
Xu Bingshe
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201800395
Subject(s) - copolymer , materials science , monomer , luminescence , polymer chemistry , ultraviolet , prepolymer , polymerization , photoluminescence , photochemistry , polymer , chemistry , composite material , optoelectronics , polyurethane
Through pre‐coordination and subsequent polymerization from vinyl‐functionalized complex monomer with polysiloxane prepolymer (synthesized by vinyltrimethoxysilane and diphenylsilanediol), a novel anti‐ultraviolet Eu 3+ ‐containing polysiloxane copolymer was obtained. FT‐IR spectra and UV/Visible absorption spectra prove the structure of the copolymer. TG‐DTG analyses indicate the copolymer keeps stable up to 321°C. When excited at 365 nm, the copolymer exhibits a stronger red emission at 612 nm. And the CIE coordinates (x=0.648, y=0.336) are very close to the National Television Standard Committee standard. Further, the red LEDs fabricated with the copolymer on 365 nm‐emitting chips display superior luminance (52110 cd/m 2 ). Finally, 30‐day UV aging test only shows luminance loss of 6% and power efficiency loss of 7.3%, so the UV‐aging resistance of the copolymer is realized. All the results indicate that the Eu 3+ ‐containing organosilicon copolymer is a promising anti‐ultraviolet red candidate.