Coalescence of Au Nanoparticles without Ligand Detachment

doi:10.1103/PhysRevLett.124.066101

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Coalescence of Au Nanoparticles without Ligand Detachment
	Guo, P ; Gao, Y
刊名	PHYSICAL REVIEW LETTERS
	2020
卷号	124 期号:6 页码:-
关键词	SELF-ASSEMBLED MONOLAYERS GOLD NANOPARTICLES FORCE-FIELD GROWTH NANOCRYSTALS WATER DYNAMICS NANOCLUSTERS SIMULATION ATTACHMENT
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.124.066101
文献子类	期刊论文
英文摘要	Repulsion of ligands is known as the key factor for hindering nanoparticle (NP) coalescence. Thus, during the past decade, it has generally accepted that the full removal of capping ligands of the contact surface is the first step for NP coalescence. Herein, using molecular dynamics simulations, we have identified a new mechanism for the coalescence of S(CH2)(n)COOH-coated Au NPs in water without ligand detachment. In contrast to the traditional mechanism, the aggregation of the NPs is induced by the twined hydrophobic chains of the ligands rather than the hydrophilic carboxyl tails as believed previously. Next, the exposed surface atoms attach to form the neck, and extend with the atomic rearrangement of the contact interface to merge the NPs, which do not need the removal of ligands as expected from traditional supposition. This finding refreshes the understanding of the atomic mechanism of the coalescence of NPs, which paves the way for the rational design and synthesis of NPs.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32748]
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
作者单位	1.Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Div Interfacial Water, Shanghai 201800, Peoples R China 3.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China
推荐引用方式 GB/T 7714	Guo, P,Gao, Y. Coalescence of Au Nanoparticles without Ligand Detachment[J]. PHYSICAL REVIEW LETTERS,2020,124(6):-.
APA	Guo, P,&Gao, Y.(2020).Coalescence of Au Nanoparticles without Ligand Detachment.PHYSICAL REVIEW LETTERS,124(6),-.
MLA	Guo, P,et al."Coalescence of Au Nanoparticles without Ligand Detachment".PHYSICAL REVIEW LETTERS 124.6(2020):-.