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	Surface modification of adamantane-terminated gold nanoclusters using cyclodextrins
	Yan, Chunyang1,2; Liu, Chao2; Abroshan, Hadi3; Li, Zhimin2,4; Qiu, Renhua1; Li, Gao2
刊名	Physical chemistry chemical physics
	2016-09-07
卷号	18期号:33页码:23358-23364
ISSN号	1463-9076
DOI	10.1039/c6cp04569c
通讯作者	Liu, chao(chaoliu@dicp.ac.cn) ; Qiu, renhua(renhuaqiu@hnu.edu.cn) ; Li, gao(gaoli@dicp.ac.cn)
英文摘要	The surface functionality of au38s2(sadm)(20) nanoclusters (-sadm = adamantanethiolate) in the presence of alpha-, beta-, and gamma-cyclodextrins (cds) is studied. the supramolecular chemistry and host-guest interactions of cds and the protecting ligands of nanoclusters are investigated using uv-vis and nmr spectroscopies, maldi mass spectrometry, and molecular dynamics simulations. in contrast to alpha-and gamma-cds, the results show that beta-cds are capable of efficiently chemisorbing onto the au38s2(sadm)(20) nanoclusters to yield au38s2(sadm)(20)-(beta-cd)(2) conjugates. md simulations revealed that two -sadm ligands of the nanoparticle with the least steric hindrance are capable to selectively be accommodated into hydrophobic cavity of beta-cds, as furthermore confirmed by nmr spectroscopy. the conjugates largely improve the stability of the nanoclusters in the presence of strong oxidants (e.g., tbhp). further, the electrochemical properties of au38s2(sadm)(20) nanoclusters and au38s2(sadm)(20)-(beta-cd)(2) conjugates are compared. the charge transfer to the redox probe molecules (e.g., k3fe(cn)(6)) in solution was monitored by cyclic voltammetry. it is found that beta-cds act as an umbrella to cover the fragile metal cores of the nanoclusters, thereby blocking direct interaction with destabilizing agents and hence quenching the charge transfer process.
WOS关键词	ADAMANTANECARBOXYLATE INCLUSION COMPLEXES ; BETA-CYCLODEXTRIN ; MOLECULAR-DYNAMICS ; FORCE-FIELD ; NANOPARTICLES ; CLUSTERS ; CHEMISTRY ; DELIVERY ; HYDROGENATION ; DERIVATIVES
WOS研究方向	Chemistry ; Physics
WOS类目	Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000382109300065
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2375663
专题	中国科学院大学
通讯作者	Liu, Chao; Qiu, Renhua; Li, Gao
作者单位	1.Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410000, Hunan, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Gold Catalysis Res Ctr, Dalian 116023, Peoples R China 3.Carnegie Mellon Univ, Dept Chem, 4400 5th Ave, Pittsburgh, PA 15213 USA 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yan, Chunyang,Liu, Chao,Abroshan, Hadi,et al. Surface modification of adamantane-terminated gold nanoclusters using cyclodextrins[J]. Physical chemistry chemical physics,2016,18(33):23358-23364.
APA	Yan, Chunyang,Liu, Chao,Abroshan, Hadi,Li, Zhimin,Qiu, Renhua,&Li, Gao.(2016).Surface modification of adamantane-terminated gold nanoclusters using cyclodextrins.Physical chemistry chemical physics,18(33),23358-23364.
MLA	Yan, Chunyang,et al."Surface modification of adamantane-terminated gold nanoclusters using cyclodextrins".Physical chemistry chemical physics 18.33(2016):23358-23364.

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