Citation: Zhenhua Wei, Kai Zhang, Chan Kyung Kim, Shuai Tan, Shaojie Wang, Lin Wang, Jun Li, Yafei Wang. Stimuli-responsive cyclometalated platinum complex bearing bent molecular geometry for highly efficient solution-processable OLEDs[J]. Chinese Chemical Letters, ;2021, 32(1): 493-496. doi: 10.1016/j.cclet.2020.05.005 shu

Stimuli-responsive cyclometalated platinum complex bearing bent molecular geometry for highly efficient solution-processable OLEDs

Zhenhua Wei ^{a, d, 1} ,
Kai Zhang ^{a, 1} ,
Chan Kyung Kim ^{c, 1} ,
Shuai Tan ^{a, d} ,
Shaojie Wang ^{b, f} ,
Lin Wang ^{b, f, *,} ,
Jun Li ^e ,
Yafei Wang ^{a, **,}

a.
National Experimental Demonstration Center for Materials Science and Engineering (Changzhou University), Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, School of Materials Science & Engineering, Changzhou University, Changzhou 213164, China
b.
Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
c.
Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, South Korea
d.
College of Chemistry, Xiangtan University, Xiangtan 411105, China
e.
School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, China
f.
Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China

wanglin@hpstar.ac.cn

qiji830404@hotmail.com

Received Date: 16 March 2020
Revised Date: 24 April 2020
Accepted Date: 6 May 2020
Available Online: 12 May 2020

Figures(6)

Smart materials, such as stimuli-responsive luminescence, have attracted much attentions due to their potential application in semiconductorfiled. In this context, platinumcomplexes of (dfppy-DC)Pt(acac) and (dfppy-O-DC)Pt(acac) were prepared and characterized, in which (2-(4', 6'-difluorophenyl)pyridinato-N, C2')(2,4-pentanedionato-O, O)Pt(Ⅱ) was used as the planar emission core and 9-(4-(phenylsulfonyl) phenyl)-9H-carbazole (DC) was regard as the bent pendent. Both platinum complexes showed bright emission in solution and solid state, concomitant with charming external-stimuli-responsive emission under mechanical grinding, organic solvent vapors and pressure. The change emission color spanned from yellow to near-infrared region. Using the platinum complexes as the dopant, solution processable organic light-emitting diodes (OLEDs) were fabricated and a maximum external quantum efficiency of ~18% was achieved, which is the highest value among the reported solution-processable OLEDs based on external-stimuli-responsive luminescence.This research demonstrated that platinum complex can show promising stimuli responsive emission via ingenious molecular design, indicating a novel way for developing the smart materials in semiconductor filed.
- Stimuli responsive emission,
- Platinum complex,
- Solution-processable OLEDs,
- Synthesis and property
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