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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Enhanced Energy Transfer within PVK/Alq_3 Polymer Nanowires Induced by the Interface Effect of Nanochannels in Porous Alumina Membrane
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Enhanced Energy Transfer within PVK/Alq_3 Polymer Nanowires Induced by the Interface Effect of Nanochannels in Porous Alumina Membrane

机译：多孔氧化铝膜中纳米通道的界面效应诱导PVK / Alq_3聚合物纳米线内增强的能量转移

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摘要

The effect of the interfacial interaction between host-guest materials on energy transfer efficiency was investigated. Porous alumina membrane (PAM) was used as the host, and poly(N-vinylcarbazole) (PVK) and tris(8-hydroxyqumoline) aluminum (Alq3) were guest materials. The energy transfer between PVK and Alq3 within a PAM shows greatly enhanced efficiency compared with that of the bulk film. Such high efficiency is ascribed to a lowered formation of the fully overlapped form of the PVK excimer, which is induced by strong interaction between the pendant carbazole rings of PVK and the Al centers on the innerchannel surface of the PAM. The photoluminescence lifetimes of PVK become shorter with an increase in the Alq3 concentration in both films and PAMs, due to the energy transfer. The mean distance between PVK and Alq3 was estimated by using the Forster formula.
机译：研究了主客体材料之间的界面相互作用对能量转移效率的影响。多孔氧化铝膜（PAM）用作主体，聚（N-乙烯基咔唑）（PVK）和三（8-羟基喹啉）铝（Alq3）为客体材料。与块状薄膜相比，PAM中PVK和Alq3之间的能量转移显示出大大提高的效率。如此高的效率归因于PVK受激准分子的完全重叠形式的降低的形成，这是由于PVK的侧基咔唑环与PAM内通道表面的Al中心之间的强相互作用引起的。由于能量转移，随着膜和PAM中Alq3浓度的增加，PVK的光致发光寿命变短。 PVK和Alq3之间的平均距离通过使用Forster公式估算。

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