| 光谱学与光谱分析 |
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| Spectra Characteristics and Electroluminescence Performance of Novel Fluorene Derivatives with Aggregation Fluorescence Enhancement |
| MA Zhu1, YU Jun-sheng1*, JIANG Long-feng1, DONG Shou-cheng2, LI Zhen2*, HU Song3 |
| 1. State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China2. Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China3. Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China |
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Abstract The photoluminescence (PL) spectra and UV-Visible absorption spectra of three novel fluorene derivatives solution containing different triphenylamine (TPA) and tetraphenyl-benzene (TPB) groups were systematically investigated. The PL spectra of the acetone/water solution were tested to analyze the capability of suppression concentration quenching (SCQ). The results showed that when water fraction ranged from 50% to 90%, the spectral irradiance of the mixture was obviously increased. Meanwhile, the PL spectra had blue shift due to the blue crystalline aggregation of novel fluorene derivatives, and the blue shift is proportional to the order of crystalline aggregation. Moreover, since the tetraphenyl-benzene and triphenylamine functional groups were tailored to fluorene backbone to suppress the concentration quenching of the fluorene dye and improve the charge carrier transporting ability, the non-doped organic light-emitting devices (OLEDs) were achieved.
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Received: 2012-08-08
Accepted: 2012-12-10
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Corresponding Authors:
YU Jun-sheng,LI Zhen
E-mail: jsyu@uestc.edu.cn; lizhen@whu.edu.cn
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