DICP OpenIR
Surface modification of adamantane-terminated gold nanoclusters using cyclodextrins
Yan, Chunyang1,2; Liu, Chao2; Abroshan, Hadi3; Li, Zhimin2,4; Qiu, Renhua1; Li, Gao2
Source PublicationPHYSICAL CHEMISTRY CHEMICAL PHYSICS
2016-09-07
ISSN1463-9076
DOI10.1039/c6cp04569c
Volume18Issue:33Pages:23358-23364
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Physics
WOS KeywordADAMANTANECARBOXYLATE INCLUSION COMPLEXES ; BETA-CYCLODEXTRIN ; MOLECULAR-DYNAMICS ; FORCE-FIELD ; NANOPARTICLES ; CLUSTERS ; CHEMISTRY ; DELIVERY ; HYDROGENATION ; DERIVATIVES
AbstractThe 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.
Language英语
WOS IDWOS:000382109300065
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/170111
Collection中国科学院大连化学物理研究所
Corresponding AuthorLiu, Chao; Qiu, Renhua; Li, Gao
Affiliation1.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
Recommended Citation
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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