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Ultrafast relaxation dynamics of phosphine-protected, rod-shaped Au-20 clusters: interplay between solvation and surface trapping
Zhou, Meng1,2; Long, Saran1,2; Wan, Xiankai3; Li, Yang1,2; Niu, Yingli1,2; Guo, Qianjin1,2; Wang, Quan-Ming3; Xia, Andong1,2
Source PublicationPHYSICAL CHEMISTRY CHEMICAL PHYSICS
2014-09-14
DOI10.1039/c4cp02336f
Volume16Issue:34Pages:18288-18293
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Physics
WOS KeywordINTRAMOLECULAR CHARGE-TRANSFER ; EXCITED-STATE ; GOLD CLUSTERS ; TRANSIENT ABSORPTION ; ACOUSTIC VIBRATIONS ; STOKES SHIFT ; NANOCLUSTERS ; EXCITATION ; NANOPARTICLES ; LUMINESCENCE
AbstractThe 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.
Language英语
WOS IDWOS:000341064600029
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/145895
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
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.
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