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Contribution of oligomer/carbon dots hybrid semiconductor nanoribbon to surface-enhanced Raman scattering property

机译：低聚物/碳点杂化半导体纳米带对表面增强拉曼散射特性的贡献

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The hybrid Ag-(PS-PSS)/C-dots nanobelts (NBs) have been prepared by decorating Ag nanoparticles (NPs) on surface of the ultra-long, semiconducting (PS-PSS)/C-dots nanoribbons (NRs) via an electroless plating method. The as-prepared Ag-(PS-PSS)/C-dots NB has been demonstrated to be an excellent substrate for surface-enhanced Raman scattering (SERS) with a detection limit of 10(-14) M and an enhancement factor of 3.35 x 10(8) while using rhodamine 6G as probe molecules. Moreover, we have investigated the application of Ag-(PS-PSS)/C-dots NBs as SERS substrate for detection of coumarins. Further, the Ag-(PS-PSS)/C-dots NB could be used as a sacrificial template to form a novel kind of hollow porous Ag nanotubes (NTs) by simply removing the inner NR in tetrahydrofuran. However, the obtained Ag NTs show a weaker SERS effect compared to that of the Ag-(PS-PSS)/C-dots NBs, which indicates that the inner organic/C-dots NR plays an essential role in SERS property of the Ag-(PS-PSS)/C-dots NBs. Here the organic (PS-PSS)/C-dots NR not only acts as a dielectric support for Ag NPs to reduce the surface plasmon damping at the Ag-NR interface due to the high electrical conductivity but also their large surface area are favorable for creating more "hot-spots". In addition, the embedded sp(2)-hybridized C-dots in NR can adsorb more aromatic R6G molecules via pi-pi interaction, which also drives R6G molecules approaching to the "hot-spots", thus enhancing the SERS signals. Based on our results, it is believed that the employment of semiconducting organic (PS-PSS)/C-dots ribbon-like structures to fabricate sensitive SERS substrates is an interesting new approach. (C) 2016 Elsevier B.V. All rights reserved.
机译：通过在超长半导体（PS-PSS）/ C点纳米带（NRs）表面装饰Ag纳米颗粒（NPs），制备了混合的Ag-（PS-PSS）/ C点纳米带（NBs）。化学镀方法。已证明制备的Ag-（PS-PSS）/ C点NB是用于表面增强拉曼散射（SERS）的极佳底物，检测极限为10（-14）M，增强因子为3.35 x 10（8），同时使用若丹明6G作为探针分子。此外，我们还研究了将Ag-（PS-PSS）/ C点NBs作为SERS底物用于香豆素检测的应用。此外，可以通过简单地去除四氢呋喃中的内部NR，将Ag-（PS-PSS）/ C点NB用作牺牲模板，以形成新型的空心多孔Ag纳米管（NTs）。然而，与Ag-（PS-PSS）/ C-dot NBs相比，所得的Ag NTs表现出较弱的SERS效应，这表明内部有机/ C-dot NR在Ag的SERS特性中起着至关重要的作用。 -（PS-PSS）/ C点NB。此处，有机（PS-PSS）/ C点NR不仅充当Ag NP的介电载体，以降低由于高电导率而在Ag-NR界面处的表面等离振子阻尼，而且它们的大表面积也有利于创建更多的“热点”。另外，NR中嵌入的sp（2）杂化的C点可以通过pi-pi相互作用吸附更多的芳族R6G分子，这也驱使R6G分子接近“热点”，从而增强了SERS信号。根据我们的结果，可以相信采用半导体有机（PS-PSS）/ C点带状结构来制造敏感的SERS基板是一种有趣的新方法。 （C）2016 Elsevier B.V.保留所有权利。

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