Citation: Qing Guo He, Zeng Ze Chu, Gang Tie Lei, An Jun Qin, Hong Zhen Lin, Feng Lian Bai, Jian Gong Cheng, Yong Qiu. A pure blue light emitting binaphthyl derivative: Synthesis and properties[J]. Chinese Chemical Letters, ;2008, 19(4): 431-434. doi: 10.1016/j.cclet.2008.02.002 shu

A pure blue light emitting binaphthyl derivative: Synthesis and properties

a Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;
b Key Laboratory of Organic Solids, Centre for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China;
c Department of Chemistry, Tsinghua University, Beijing 100084, China

Received Date: 20 November 2007

Fund Project: Financial support from NSFC (No. 50503024, 20773156), 973 (No. 2002CB613401), "863 program" (No. 2006AA03Z312), and STCSM (No. 071111010) and Chinese Academy of Sciences (No. KGCX2-YW-118) are gratefully acknowledged.

A binaphthyl derivative with pyrene on 3 and 3' positions was synthesized and characterized via Suzuki coupling reaction.Emission maximum in solution was located at 390 nm with a quantum efficiency of 68% by taking 9, 10-diphenyl anthracene as reference, while it is shifted to 450 nm with FWHM of 104 nm resulting from aggregation state in solid film.Glass transition temperature (T_g) and decomposition temperature were measured to be 184 and 447℃, respectively, by DSC and TGA.Unlike its photoluminescence spectrum, electroluminescent spectrum peaked at about 460 nm and shows a FWHM of 69 nm corresponding to a pure blue emission.The turn-on voltage, luminance and efficiency maximum were 5 V, 2953 cd/m² and 1.37 cd/A with CIE color coordinate of (0.16, 0.15), in the device structure of ITO/NPB (40 nm)/PY-BN-PY (15 nm)/BPhen (40 nm)/Mg:Ag.
- Binaphthyl,
- Pyrene,
- Suzuki reaction,
- Photoluminescence,
- Electrohiminescence
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