Encapsulating a Ternary Europium Complex in a Silica/Polymer Hybrid Matrix for High Performance Luminescence Application

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• 作者：Xiaoguang Huang ; Qin Wang ; Xuhuan Yan ; Jun Xu ; Weisheng Liu ; Qing Wang ; Yu Tang
• 刊名：Journal of Physical Chemistry C
• 出版年：2011
• 出版时间：February 10, 2011
• 年：2011
• 卷：115
• 期：5
• 页码：2332-2340
• 全文大小：1068K
• 年卷期：v.115,no.5(February 10, 2011)
• ISSN：1932-7455

文摘

The sol鈭抔el method has been proven to be an excellent approach for the preparation of hybrid materials. Combining luminescent lanthanide complexes with silica/polymer hybrid materials to improve the stability and even to increase luminescent properties is fascinating and promising in the lanthanide complex hybrid material field. A series of tough and transparent hybrid materials polymer鈭扙u鈭扡鈭扨 gel have been assembled by a ternary europium complex [Eu₂L₂(Phen)₂(CH₃OH)₄]Cl₂路(CH₃OH)₆(H₂L = 2,2鈥?(((2,4,6-trimethyl-1,3-phenylene)bis(methylene))bis(oxy))dibenzoic acid, Phen =1,10-phenanthroline) embedded into microporous silica/polymer [poly(methyl methacrylate) (PMMA), polyvinylpyrrolidone (PVP), and poly(vinyl butyral) (PVB)] matrixes. The Fourier transform infrared (FTIR) spectra, UV鈭抳is absorption spectra, X-ray diffraction (XRD), scanning electronic microstructure (SEM), thermogravimetry (TG), and luminescent properties of the europium ternary complex and the hybrid materials (Eu鈭扡鈭扨 gel and polymer鈭扙u鈭扡鈭扨 gel) are described in detail. The hybrid materials polymer鈭扙u鈭扡鈭扨 gel display more efficient unit mass luminescence emission, longer lifetime, higher quantum efficiency, greater thermal stability, and better exposure durability in comparison with the Eu鈭扡鈭扨 gel. The result may support the conclusion that the polymers could interact with the complex, act as antennae, and transfer energy to the central Eu³⁺ ions. Comparatively, diminutive distinction exists in the hybrid materials containing different polymers originated from the weak interactions between the host and the guest.