Rational design of high efficiency green to deep red/near-infrared emitting materials based on isomeric donor-acceptor chromophores

Zhang, Youming1,2; Chen, Zhao3; Song, Jun1; He, Junjie1; Wang, Xin1; Wu, Jiatao1; Chen, Shuming3; Qu, Junle1; Wong, Wai-Yeung2

2019-02-21

10.1039/c8tc05383a

Journal of Materials Chemistry C   影响因子和分区

2050-7526

2050-7534

A family of compounds TPA-BT-Q, TPA-pyT-N-naph, TPA-N-pyT-naph, and DPA-py-N-BT-naph with an isomeric donor-acceptor conjugation framework were designed and synthesized, and their structureproperty relationships, theoretical calculations, and photophysical and electrochemical characteristics were investigated. These isomeric chromophores showed significantly different photophysical properties. Emission wavelengths spanning from the green to near-infrared region were observed in different solvents with high photoluminescence quantum yields, exceeding 90% in low polarity solvents and 44-88% in blend films. Organic light-emitting devices (OLEDs) displayed a strong electroluminescence with emission peaks at 592, 660, 630, and 580 nm; maximum current efficiencies of 7.92, 2.93, 3.56, and 15.37 cd A(-1); maximum power efficiencies of 4.21, 1.56, 1.81, and 8.24 lm W-1; and maximum external quantum efficiencies of 3.15%, 2.75%, 2.66%, and 5.33% for TPA-BT-Q, TPA-pyT-N-naph, TPA-N-pyT-naph, and DPA-py-N-BT-naph doped OLEDs, respectively.

SCI ; EI

英语

通讯

[847S]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied

WOS:000459725400031

ROYAL SOC CHEMISTRY

20190806523116

Chromophores ; Efficiency ; Electroluminescence ; Infrared devices ; Light emission ; Organic light emitting diodes (OLED)

Semiconductor Devices and Integrated Circuits:714.2 ; Light, Optics and Optical Devices:741 ; Light/Optics:741.1 ; Organic Compounds:804.1 ; Production Engineering:913.1 ; Quantum Theory; Quantum Mechanics:931.4

Web of Science

1.Shenzhen Univ, Coll Optoelect Engn, Minist Educ & Guangdong Prov, Key Lab Optoelect Devices & Syst, Shenzhen 518060, Peoples R China
2.Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hong Kong, Peoples R China
3.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China

Zhang, Youming,Chen, Zhao,Song, Jun,et al. Rational design of high efficiency green to deep red/near-infrared emitting materials based on isomeric donor-acceptor chromophores[J]. Journal of Materials Chemistry C,2019,7(7):1880-1887.

Zhang, Youming.,Chen, Zhao.,Song, Jun.,He, Junjie.,Wang, Xin.,...&Wong, Wai-Yeung.(2019).Rational design of high efficiency green to deep red/near-infrared emitting materials based on isomeric donor-acceptor chromophores.Journal of Materials Chemistry C,7(7),1880-1887.

Zhang, Youming,et al."Rational design of high efficiency green to deep red/near-infrared emitting materials based on isomeric donor-acceptor chromophores".Journal of Materials Chemistry C 7.7(2019):1880-1887.