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首页> 美国卫生研究院文献>Molecules >Anisotropic Photoluminescence of Poly(3-hexyl thiophene) and Their Composites with Single-Walled Carbon Nanotubes Highly Separated in Metallic and Semiconducting Tubes
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Anisotropic Photoluminescence of Poly(3-hexyl thiophene) and Their Composites with Single-Walled Carbon Nanotubes Highly Separated in Metallic and Semiconducting Tubes

机译：聚（3-己基噻吩）的各向异性光致发光及其复合材料其具有高度分离在金属和半导体管中的单壁碳纳米管

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In this work, the effect of the single-walled carbon nanotubes (SWNTs) as the mixtures of metallic and semiconducting tubes (M + S-SWNTs) as well as highly separated semiconducting (S-SWNTs) and metallic (M-SWNTs) tubes on the photoluminescence (PL) of poly(3-hexyl thiophene) (P3HT) was reported. Two methods were used to prepare such composites, that is, the chemical interaction of the two constituents and the electrochemical polymerization of the 3-hexyl thiophene onto the rough Au supports modified with carbon nanotubes (CNTs). The measurements of the anisotropic PL of these composites have highlighted a significant diminution of the angle of the binding of the P3HT films electrochemical synthetized onto Au electrodes covered with M + S-SWNTs. This change was attributed to metallic tubes, as was demonstrated using the anisotropic PL measurements carried out on the P3HT/M-SWNTs and P3HT/S-SWNTs composites. Small variations in the angle of the binding were reported in the case of the composites prepared by chemical interaction of the two constituents. The proposed mechanism to explain this behavior took into account the functionalization process of CNTs with P3HT. The experimental arguments of the functionalization process of CNTs with P3HT were shown by the UV-VIS-NIR and FTIR spectroscopy as well as surface-enhanced Raman scattering (SERS). A PL quenching process of P3HT induced both in the presence of S-SWNTs and M-SWNTs was reported, too. This process origins in the various de-excitation pathways which can be developed considering the energy levels diagram of the two constituents of each studied composite.
机译：在这项工作中，单壁碳纳米管（SWNT）的效果作为金属和半导体管（M + S-SWNT）的混合物以及高度分离的半导体（S-SWNT）和金属（M-SWNT）管据报道，在聚（3-己烯烯烯烯烯）（P3HT）的光致发光（PL）上。使用两种方法制备这种复合材料，即两个成分的化学相互作用和3-己基噻吩的电化学聚合到用碳纳米管（CNT）改性的粗AU载体上。这些复合材料的各向异性PL的测量突出显示P3HT薄膜电化学的结合角度的显着减少，所述电化学的结合在用M + S-SWNT覆盖的Au电极上。这种变化归因于金属管，使用在P3HT / M-SWNT和P3HT / S-SWNTS复合材料上进行的各向异性PL测量来证明。在通过两种成分的化学相互作用制备的复合材料的情况下报道了结合角度的小变化。拟议的解释该行为的机制考虑了CNTS与P3HT的功能化过程。通过UV-Vis-Nir和FTIR光谱显示CNT的官能化方法的实验争论以及FTIR光谱以及表面增强拉曼散射（SERS）。报道，在S-SWNT和M-SWNT的存在下诱导P3HT的PL猝灭过程。该过程中的起源于各种去激发途径，其可以考虑每个研究的复合材料的两个成分的能量水平图。

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