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Tuning the surface plasmon resonance in gold nanocrystals with single layer carbon nitride

机译:用单层氮化物调整金纳米晶体中的表面等离子体共振

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摘要

The introduction of colloidal single-layer carbon nitride (SLCN) nanosheets at the stage of the formation of Au nanocrystals (NCs) in aqueous solutions allows the surface plasmon resonance peak position of gold/SLCN composites to be tuned in a relatively broad range of 520-610 nm. The effect is believed to originate from a strong electronic interaction between Au NCs and SLCN nanosheets attached to their surface as capping ligands and resulting in a decrease of the effective electron density on the Au NC surface. The SLCN nanosheets suppress direct interparticle interactions between Au NCs prohibiting additional plasmonic features typical for the Au NC associates. Species similar to SLCN in terms of functionalities but having no conjugated aromatic system, such as polyethyleneimine, only induce aggregation of Au NCs but do not allow the main surface plasmon resonance of the NCs to be tuned demonstrating the crucial role of electronic interaction between the NC surface and the aromatic SLCN sheets for the surface plasmon resonance tuning.
机译:引入胶体单层氮化碳的(SLCN)在水溶液中的Au纳米晶体(NCS)的形成的阶段纳米片允许金的表面等离子体共振峰位置/ SLCN复合材料在一个相对宽的范围的520被调谐-610纳米。的效果被认为是由附连到其表面作为封端的配体,并导致在Au NC表面上的有效电子密度的降低的Au NCS和SLCN纳米片之间的强电子交互来发起。金NC之间的纳米片SLCN直接抑制间相互作用禁止典型的金NC联营等离激元的额外功能。类似于SLCN在功能方面,但是具有物种没有共轭芳族体系,如聚乙烯亚胺,仅诱导的Au NC的聚集,但不允许所述NC的主表面等离子体共振被调谐展示电子交互的NC之间的至关重要的作用表面和用于表面等离子体共振调谐芳香族SLCN片材。

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  • 来源
    《RSC Advances》 |2019年第1期|共6页
  • 作者单位

    Nat Acad Sci Ukraine LV Pysarzhevsky Inst Phys Chem UA-03028 Kiev Ukraine;

    Nat Acad Sci Ukraine LV Pysarzhevsky Inst Phys Chem UA-03028 Kiev Ukraine;

    Nat Acad Sci Ukraine LV Pysarzhevsky Inst Phys Chem UA-03028 Kiev Ukraine;

    Nat Acad Sci Ukraine LV Pysarzhevsky Inst Phys Chem UA-03028 Kiev Ukraine;

    LLC NanoMedTech UA-03680 Kiev Ukraine;

    LLC NanoMedTech UA-03680 Kiev Ukraine;

    Tech Univ Chemnitz Semicond Phys D-09107 Chemnitz Germany;

    Tech Univ Chemnitz Semicond Phys D-09107 Chemnitz Germany;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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