Au Polyhedron Array with Tunable Crystal Facets by PVP-Assisted Thermodynamic Control and Its Sharp Shape As Well As High-Energy Exposed Planes Co-Boosted SERS Activity

doi:10.1002/smll.202105045

	Au Polyhedron Array with Tunable Crystal Facets by PVP-Assisted Thermodynamic Control and Its Sharp Shape As Well As High-Energy Exposed Planes Co-Boosted SERS Activity
	Li, Xuejiao 1,2,3; Zhang, Tao 2,3; Chen, Zhiming 1,2,3; Yu, Jie 2,3; Cao, An 1,2,3; Liu, Dilong 2,3; Cai, Weiping 2,3; Li, Yue 2,3
刊名	SMALL
	2021-11-28
关键词	arrays facets polyhedrons polyvinyl pyrrolidone seed-mediated growth
ISSN号	1613-6810
DOI	10.1002/smll.202105045
通讯作者	Li, Yue(yueli@issp.ac.cn)
英文摘要	A route is developed for directly growing 2D Au polyhedron arrays with controllable exposed facets of polyhedron by utilizing the substrate-supported 2D Au quasi-spherical nanoparticle arrays as the Au seed arrays, which cannot be realized by traditional lithography. In the reaction system, polyvinyl pyrrolidone (PVP) plays a vital role in guiding the reduced Au atoms and stabilizing the substrate-supported Au seeds. More importantly, by thermodynamic control, PVP as a capping agent can further direct the formation of {111} facets. The key to guarantee the integrity and periodicity of array is a proper reduction of Au ions and low growth rate of crystal. Benefiting from the higher electric field intensity near the sharp vertexes and edges of Au polyhedra and the exposed {110} facets with high energy, the Au polyhedron array with {110} facets encasing polyhedron exhibits good, stable surface enhanced Raman scattering activity toward 4-aminothiophenol among the involved arrays. The proposed fabrication approach tremendously enriches the structural diversity of Au nanoarrays on substrates and greatly overcomes the shortcoming of traditional lithography.
资助项目	National Science Fund for Distinguished Young Scholars[51825103] ; Natural Science Foundation of China[51771188] ; Natural Science Foundation of China[52001306] ; National Key Research and the Development Program of China[2017YFA0207101]
WOS关键词	STEP SEEDED GROWTH ; HIGH-INDEX FACETS ; GOLD NANOPARTICLES ; NANOCRYSTALS ; PERFORMANCE ; DEPOSITION ; NANORODS ; STRAIN ; FIELD ; NM
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000723121200001
资助机构	National Science Fund for Distinguished Young Scholars ; Natural Science Foundation of China ; National Key Research and the Development Program of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/126752]
专题	中国科学院合肥物质科学研究院
通讯作者	Li, Yue
作者单位	1.Chinese Acad Sci, Key Lab Mat Phys & Anhui, Key Lab Nanomat & Nanotechnol, Inst Solid State Phys,HFIPS, Hefei 230031, Peoples R China 2.Chinese Acad Sci, Anhui Key Lab Nanomat & Nanotechnol, Inst Solid State Phys, HFIPS, Hefei 230031, Peoples R China 3.Chinese Acad Sci, Key Lab Mat Phys, Inst Solid State Phys, HFIPS, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Li, Xuejiao,Zhang, Tao,Chen, Zhiming,et al. Au Polyhedron Array with Tunable Crystal Facets by PVP-Assisted Thermodynamic Control and Its Sharp Shape As Well As High-Energy Exposed Planes Co-Boosted SERS Activity[J]. SMALL,2021.
APA	Li, Xuejiao.,Zhang, Tao.,Chen, Zhiming.,Yu, Jie.,Cao, An.,...&Li, Yue.(2021).Au Polyhedron Array with Tunable Crystal Facets by PVP-Assisted Thermodynamic Control and Its Sharp Shape As Well As High-Energy Exposed Planes Co-Boosted SERS Activity.SMALL.
MLA	Li, Xuejiao,et al."Au Polyhedron Array with Tunable Crystal Facets by PVP-Assisted Thermodynamic Control and Its Sharp Shape As Well As High-Energy Exposed Planes Co-Boosted SERS Activity".SMALL (2021).