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首页> 外文期刊>Advanced Functional Materials >Significantly Enhanced Photoluminescence of Doped Polymer-Metal Hybrid Nanotubes
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Significantly Enhanced Photoluminescence of Doped Polymer-Metal Hybrid Nanotubes

机译：掺杂的聚合物-金属杂化纳米管的光致发光显着增强。

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摘要

We report on the significantly enhanced photoluminescence (PL) of hybrid double-layered nanotubes (HDLNTs) consisting of poly(3-methylthiophene) (P3MT) nanotubes with various doping levels enveloped by an inorganic, nickel (Ni) metal nanotube. From laser confocal microscopy PL experiments on a single strand of the doped-P3MT nanotubes and of their HDLNTs, the PL peak intensity of the HDLNT systems increased remarkably up to ~350 times as the doping level of the P3MT nanotubes of the HDLNTs increased, which was confirmed by measurements of the quantum yield. In a comparison of the normalized ultraviolet and visible absorption spectra of the doped-P3MT nanotubes and their HDLNTs, new absorption peaks corresponding to surface-plasmon (SP) energy were created at 563 and 615 nm after the nanoscale Ni metal coating onto the P3MT nanotubes. and their intensity increased on increasing the doping level of the P3MT nanotube. The doping-induced bipolaron peaks of the HDLNTs of doped-P3MT/Ni were relatively reduced, compared with those of the doped-P3MT nanotubes before the Ni coating, due to the charge-transfer effect in the SP-resonance (SPR) coupling. Both energy-transfer and charge-transfer effects due to SP resonance contributed to the very-large enhancement of the PL efficiency of the doped-P3MT-based HDLNTs.
机译：我们报告的混合双层纳米管（HDLNTs）显着增强的光致发光（PL），该复合双层纳米管由具有不同掺杂水平的聚（3-甲基噻吩）（P3MT）纳米管组成，被无机，镍（Ni）金属纳米管包围。根据激光共聚焦显微镜对掺杂的P3MT纳米管及其HDLNT的单链进行的PL实验，随着HDLNTs的P3MT纳米管的掺杂水平增加，HDLNT系统的PL峰强度显着提高了约350倍。通过测量量子产率证实。在对掺杂的P3MT纳米管及其HDLNT的归一化紫外和可见光吸收光谱进行比较后，在P3MT纳米管上涂覆了纳米级镍金属后，在563和615 nm处产生了对应于表面等离子体（SP）能量的新吸收峰。 。它们的强度随着P3MT纳米管掺杂水平的增加而增加。由于在SP共振（SPR）耦合中的电荷转移效应，与Ni涂层之前的掺杂P3MT纳米管相比，掺杂P3MT / Ni的HDLNT的掺杂诱导双极化子峰相对减少。 SP共振引起的能量转移和电荷转移效应都极大地提高了基于掺杂P3MT的HDLNT的PL效率。

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