Atom Absorption Energy Directed Symmetry-Breaking Synthesis of Au-Ag Hierarchical Nanostructures and Their Efficient Photothermal Conversion

doi:10.1002/smll.202204748

	Atom Absorption Energy Directed Symmetry-Breaking Synthesis of Au-Ag Hierarchical Nanostructures and Their Efficient Photothermal Conversion
	Zeng, Pan 1,4; Hang, Lifeng 2; Zhang, Guofeng 1; Wang, Yifan 1,4; Chen, Zhiming 1,4; Yu, Jie 1; Zhang, Tao 1,3; Cai, Weiping 1; Li, Yue 1,4
刊名	SMALL
	2022-09-30
关键词	atom absorption energy growth mechanisms hierarchical nanostructures photothermal conversion symmetry-breaking synthesis
ISSN号	1613-6810
DOI	10.1002/smll.202204748
通讯作者	Zhang, Tao(tao.zhangt@ntu.edu.sg) ; Li, Yue(yueli@issp.ac.cn)
英文摘要	Asymmetric plasmonic hierarchical nanostructures (HNs) are of great significance in optics, catalysis, and sensors, but the complex growth kinetics and lack of fine structure design limit their practical applications. Herein, a new atom absorption energy strategy is developed to achieve a series of Au-Ag HNs with the continuously tuned contact area in Janus and Ag island number/size on Au seeds. Different from the traditional passive growth mode, this strategy endows seed with a hand to capture the hetero atoms in a proactive manner, which is beyond the size, shape, and assembles of Au seed. Density functional theory reveals ththe adsorption of PDDA on Au surface leads to lower formation energy of Au-Ag bonds (-3.96 eV) than FSDNA modified Au surface (-2.44 eV). The competitive adsorption of two ligands on Au seed is the decisive factor for the formation of diverse Au-Ag HNs. In particular, the Au-Ag-2 HNs exhibit outstanding photothermal conversion capability in the near-infrared window, and in vivo experiments verify them as superior photothermal therapy agents. This work highlights the importance of the atom absorption energy strategy in unlocking the diversity of HNs and may push the synthesis and application of superstructures to a higher level.
资助项目	National Science Fund for Distinguished Young Scholars[51825103] ; Natural Science Foundation of China[52001306] ; Natural Science Foundation of China[51903162] ; Natural Science Foundation of China[52171232] ; HFIPS Director's Fund[YZJJZX202019] ; Scientific Instrument Developing Project of the Chinese Academy of Sciences[E14BBGU52G1]
WOS关键词	METAL NANOCRYSTALS ; CORE-SHELL ; STABILITY ; GROWTH
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:000862086100001
资助机构	National Science Fund for Distinguished Young Scholars ; Natural Science Foundation of China ; HFIPS Director's Fund ; Scientific Instrument Developing Project of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/129155]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang, Tao; Li, Yue
作者单位	1.Chinese Acad Sci, HFIPS, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 2.Nanyang Technol Univ, Sch Phys & Math Sci, 21 Nanyang Link, Singapore 637371, Singapore 3.Guangdong Second Prov Gen Hosp, Dept Med Imaging, Guangzhou 518037, Peoples R China 4.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Pan,Hang, Lifeng,Zhang, Guofeng,et al. Atom Absorption Energy Directed Symmetry-Breaking Synthesis of Au-Ag Hierarchical Nanostructures and Their Efficient Photothermal Conversion[J]. SMALL,2022.
APA	Zeng, Pan.,Hang, Lifeng.,Zhang, Guofeng.,Wang, Yifan.,Chen, Zhiming.,...&Li, Yue.(2022).Atom Absorption Energy Directed Symmetry-Breaking Synthesis of Au-Ag Hierarchical Nanostructures and Their Efficient Photothermal Conversion.SMALL.
MLA	Zeng, Pan,et al."Atom Absorption Energy Directed Symmetry-Breaking Synthesis of Au-Ag Hierarchical Nanostructures and Their Efficient Photothermal Conversion".SMALL (2022).