当前位置: X-MOL 学术J. Phys. Chem. Lett. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Surface Single-Atom Tailoring of a Gold Nanoparticle
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2017-12-26 00:00:00 , DOI: 10.1021/acs.jpclett.7b02982
Zibao Gan 1 , Jishi Chen 1 , Lingwen Liao 1 , Hongwen Zhang 1 , Zhikun Wu 1
Affiliation  

Surface single-atom tailoring of a gold nanoparticle, that is, adding, removing, or replacing one surface atom on a structure-resolved nanoparticle in a controlled manner, is very exciting yet challenging and has not been hitherto achieved. Herein we report the first realization of the introduction of a single sulfur atom onto the surface of the structure-unraveled Au60S6(SCH2Ph)36 nanoparticle. Single-crystal X-ray crystallography reveals that the as-obtained nanoparticle consists of one Au17 kernel protected by one Au20S3(SCH2Ph)18 and one unprecedented Au23S4(SCH2Ph)18 motif with the introduced sulfur atom included as a tetrahedral-coordinated μ4-S. The introduced sulfur leads to the changes of both internal structure and crystallographic arrangement. Unlike the case of 6HLH arrangement in Au60S6(SCH2Ph)36 crystals, the “ABAB” arrangement in Au60S7(SCH2Ph)36 crystals enhances the solid photoluminescence of amorphous Au60S7(SCH2Ph)36 and brings a slight redshift of the maximum emission. The extensive near-infrared emission provides Au60S7(SCH2Ph)36 potential applications in some fields such as anticounterfeiting, imaging, etc.

中文翻译:

金纳米粒子的表面单原子剪裁

金纳米粒子的表面单原子修整,即以受控方式在结构分辨的纳米粒子上添加,去除或替换一个表面原子,是非常令人兴奋且具有挑战性的,并且迄今为止尚未实现。在本文中,我们报道了将单个硫原子引入未结构化的Au 60 S 6(SCH 2 Ph)36纳米颗粒表面的第一个实现。X射线单晶晶体学分析表明,所获得的纳米粒子由一个被17个Au 20 S 3(SCH 2 Ph)18和一个前所未有的Au 23 S 4保护的Au 17核组成。(SCH 2 PH)18基序,包括作为四面体配位的μ引入的硫原子4 -S。引入的硫导致内部结构和晶体学排列的变化。不像6HLH布置在金的情况下60 š 6(SCH 2 PH)36个晶体,在Au中的“ABAB”布置60 š 7(SCH 2 PH)36个结晶提高非晶Au构成的固体光致发光60 š 7(SCH 2博士)36并带来最大排放量的轻微红移。广泛的近红外发射在防伪,成像等某些领域提供了Au 60 S 7(SCH 2 Ph)36的潜在应用。
更新日期:2017-12-26
down
wechat
bug