Ultrafast relaxation dynamics of phosphine-protected, rod-shaped Au-20 clusters: interplay between solvation and surface trapping
文献类型：期刊论文
| 作者 | Zhou, Meng1,2; Long, Saran1,2; Wan, Xiankai3; Li, Yang1,2; Niu, Yingli1,2; Guo, Qianjin1,2; Wang, Quan-Ming3; Xia, Andong1,2 |
| 刊名 | PHYSICAL CHEMISTRY CHEMICAL PHYSICS
 |
| 出版日期 | 2014-09-14 |
| 卷号 | 16期号:34页码:18288-18293 |
| ISSN号 | 1463-9076 |
| DOI | 10.1039/c4cp02336f |
| 英文摘要 | The exact interaction between Au cores and surface ligands remains largely unknown because of the complexity of the structure and chemistry of ligand/Au-core interfaces in ligand-protected Au nanoclusters (AuNCs), which are commonly found in many organic-inorganic complexes. Here, femtosecond transient absorption measurement of the excited-state dynamics of a newly synthesized phosphine-protected cluster [Au-20(PPhPY2)(10)Cl-4]Cl-2 (1) is reported. Intramolecular charge transfer (ICT) from the Au core to the peripheral ligands was identified. Furthermore, we found that solvation strongly affected ICT at ligand/Au-core interfaces while by choosing several typical alcoholic solvents with different intrinsic solvation times, we successfully observed that excited-state relaxation dynamics together with displacive excited coherent oscillation of Au20 clusters were significantly modulated through the competition between solvation and surface trapping. The results provide a fundamental understanding of the structure-property relationships of the solvation-dependent core-shell interaction of AuNCs for the potential applications in catalysis, sensing and nanoelectronics. |
| 语种 | 英语 |
| WOS记录号 | WOS:000341064600029 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/53055]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Guo, Qianjin |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, State Key Lab Mol React Dynam, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 3.Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Fujian, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Meng,Long, Saran,Wan, Xiankai,et al. Ultrafast relaxation dynamics of phosphine-protected, rod-shaped Au-20 clusters: interplay between solvation and surface trapping[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2014,16(34):18288-18293. |
| APA | Zhou, Meng.,Long, Saran.,Wan, Xiankai.,Li, Yang.,Niu, Yingli.,...&Xia, Andong.(2014).Ultrafast relaxation dynamics of phosphine-protected, rod-shaped Au-20 clusters: interplay between solvation and surface trapping.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,16(34),18288-18293. |
| MLA | Zhou, Meng,et al."Ultrafast relaxation dynamics of phosphine-protected, rod-shaped Au-20 clusters: interplay between solvation and surface trapping".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 16.34(2014):18288-18293. |
入库方式： OAI收割
来源：化学研究所
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