Electrospun Self-Supporting Nanocomposite Films of Na9[EuW10O36]·32H2O/PAN as pH-Modulated Luminescent Switch
Electrospun Self-Supporting Nanocomposite Films of Na9[EuW10O36]·32H2O/PAN as pH-Modulated Luminescent Switch
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DOI：
10.1021/ie302712s
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发表时间：
2013-02
影响因子：
4.2
通讯作者：
Xiaoting Wang;Jianqiang Wang;R. Tsunashima;K. Pan;B. Cao;Yuefei Song
中科院分区：
文献类型：
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作者：
Xiaoting Wang;Jianqiang Wang;R. Tsunashima;K. Pan;B. Cao;Yuefei Song
利用静电纺丝技术成功制备了连续、柔性、自支撑的EuW10/PAN （EuW10 = Na9[EuW10O36]·32H2O; PAN =聚丙烯腈）纳米复合膜，所制备的膜具有较强的Eu（III）离子红发射特性。当薄膜暴露于HCl、H2S、SO2等酸性气体时，可淬灭红色发光。当进一步暴露于NH3气体中时，纳米复合膜显示出恢复的红色发光。因此，EuW10/PAN纳米复合薄膜表现出可逆、高对比度和ph调制的发光光开关，其中包括EuW10的质子化和去质子化两种不同的状态之间的相互转换。本研究对新型光电器件的设计和制造具有一定的指导意义。
The continuous, flexible, and self-supporting nanocomposite films of EuW10/PAN (EuW10 = Na9[EuW10O36]·32H2O; PAN = polyacrylonitrile) have been successfully fabricated through electrospinning technique, and the resulting films display strong red emission of Eu(III) ion. When the films are exposed to acidic gases such as HCl, H2S and SO2, the red luminescence can be quenched. Upon further exposure to NH3 gas, the nanocomposite films show the recovered red luminescence. As such, the EuW10/PAN nanocomposite films exhibit reversible, high-contrast, and pH-modulated luminescent photoswitching, which involves two distinct states that can be interconverted between the protonation and deprotonation states of EuW10. This work could be of benefit for the design and fabrication of novel electro-optical devices.