Highly Dichroic Metallomesogen of Dinuclear Platinum Complex: Synthesis and Liquid Crystal and Photophysical Properties

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• 作者：Yafei Wang ; Qing Chen ; Yanhu Li ; Yu Liu ; Hua Tan ; Junting Yu ; Meixiang Zhu ; Hongbin Wu ; Weiguo Zhu ; Yong Cao
• 刊名：The Journal of Physical Chemistry C
• 出版年：2012
• 出版时间：March 8, 2012
• 年：2012
• 卷：116
• 期：9
• 页码：5908-5914
• 全文大小：350K
• 年卷期：v.116,no.9(March 8, 2012)
• ISSN：1932-7455

文摘

A novel dinuclear platinum complex of (biC₁₂ppy-fl)Pt₂C₁₂DBM)₂ with liquid crystal luminescent property has been prepared, as well as its liquid crystal, optophysical properties and hole mobility have been studied, where biC₁₂ppy-fl is 6,6鈥?[4,4鈥?(9,9-didodecyl-9H-fluorene-2,7-diyl)bis(1,4-phenylene)]bis[3-(dodecyloxymethyl)pyridine] and C₁₂DBM is 1,3-bis[4-(dodecyloxy)phenyl]propane-1,3-dione. This dinuclear platinum complex displayed a smectic mesophase and excellent opto-physical properties. Compared to the reported mononuclear platinum complex of (C_nROppy)Pt(acac) (R = H, F), this dinuclear platinum complex exhibited higher emission quantum yield and higher stability, as well as higher hole mobility of 8.4 脳 10^鈥? cm²/(V s). Moreover, a highly polarized ratio of 10.3 was obtained for the aligned film of (biC₁₂ppy-fl)Pt₂(C₁₂DBM)₂ on the aligned polyimide at room temperature.