Unraveling a generic growth pattern in structure evolution of thiolate-protected gold nanoclusters
文献类型：期刊论文
| 作者 | Xu, WW; Li, YD; Gao, Y; Zeng, XC |
| 刊名 | NANOSCALE
 |
| 出版日期 | 2016 |
| 卷号 | 8期号:14页码:7396—7401 |
| 关键词 | X-RAY CRYSTALLOGRAPHY THEORETICAL-ANALYSIS CRYSTAL-STRUCTURE OPTICAL-PROPERTIES STRUCTURE PREDICTION MAGIC SIZE NANOPARTICLES CLUSTER AU-25 1ST-PRINCIPLES |
| ISSN号 | 2040-3364 |
| 通讯作者 | Gao, Y (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Div Interfacial Water & Key Lab Interfacial Phys, Shanghai 201800, Peoples R China. ; Gao, Y (reprint author), Chinese Acad Sci, Shanghai Sci Res Ctr, Shanghai 201204, Peoples R China. ; Gao, Y ; Zeng, XC (reprint author), Univ Nebraska, Dept Chem, Lincoln, NE 68588 USA. ; Zeng, XC (reprint author), Univ Sci & Technol China, Collaborat Innovat Ctr Chem Energy Mat, Hefei 230026, Anhui, Peoples R China. |
| 英文摘要 | Precise control of the growth of thiolate-protected gold nano-clusters is a prerequisite for their applications in catalysis and bioengineering. Here, we bring to bear a new series of thiolate-protected nanoclusters with a unique growth pattern, i.e., Au-20(SR)(16), Au-28(SR)(20), Au-36(SR)(24), Au-44(SR)(28), and Au-52(SR)(32). These nanoclusters can be viewed as resulting from the stepwise addition of a common structural motif [Au-8(SR)(4)]. The highly negative values of the nucleus-independent chemical shift (NICS) in the center of the tetrahedral Au-4 units suggest that the overall stabilities of these clusters stem from the local stability of each tetrahedral Au-4 unit. Generalization of this growth-pattern rule to large-sized nanoclusters allows us to identify the structures of three new thiolate-protected nanoclusters, namely, Au-60(SR)(36), Au-68(SR)(40), and Au-76(SR)(44). Remarkably, all three large-sized nanoclusters possess relatively large HOMO-LUMO gaps and negative NICS values, suggesting their high chemical stability. Further extension of the growth-pattern rule to the infinitely long nanowire limit results in a one-dimensional (1D) thiolate-protected gold nanowire (RS-AuNW) with a band gap of 0.78 eV. Such a unique growth-pattern rule offers a guide for precise synthesis of a new class of large-sized thiolate-protected gold nanoclusters or even RS-AuNW which, to our knowledge, has not been reported in the literature. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000373722000005 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/25886]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Xu, WW,Li, YD,Gao, Y,et al. Unraveling a generic growth pattern in structure evolution of thiolate-protected gold nanoclusters[J]. NANOSCALE,2016,8(14):7396—7401. |
| APA | Xu, WW,Li, YD,Gao, Y,&Zeng, XC.(2016).Unraveling a generic growth pattern in structure evolution of thiolate-protected gold nanoclusters.NANOSCALE,8(14),7396—7401. |
| MLA | Xu, WW,et al."Unraveling a generic growth pattern in structure evolution of thiolate-protected gold nanoclusters".NANOSCALE 8.14(2016):7396—7401. |
入库方式： OAI收割
来源：上海应用物理研究所
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