Full metadata record
DC Field | Value | Language |
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dc.creator | Yiyang, L. (Lin) | - |
dc.creator | Charchar, P, (Patrick) | - |
dc.creator | Christofferson, A.J. (Andrew J.) | - |
dc.creator | Thomas, M.R. (Michael R.) | - |
dc.creator | Todorova, N. (Nevena) | - |
dc.creator | Mazo, M. (Manuel) | - |
dc.creator | Chen, Q. (Qu) | - |
dc.creator | Doutch, J. (James) | - |
dc.creator | Richardson, R. (Robert) | - |
dc.creator | Yarovsky, I. (Irene) | - |
dc.creator | Stevens, M.M. (Molly M.) | - |
dc.date.accessioned | 2024-02-10T07:44:45Z | - |
dc.date.available | 2024-02-10T07:44:45Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Yiyang, L. (Lin); Charchar, P, (Patrick); Christofferson, A.J. (Andrew J.); et al. "Surface Dynamics and Ligand−Core Interactions of Quantum Sized Photoluminescent Gold Nanoclusters". J. Am. Chem. Soc.. 140, 2018, 18217 - 18226 | es |
dc.identifier.issn | 0002-7863 | - |
dc.identifier.uri | https://hdl.handle.net/10171/69036 | - |
dc.description.abstract | Quantum-sized metallic clusters protected by biological ligands represent a new class of luminescent materials; yet the understanding of structural information and photoluminescence origin of these ultrasmall clusters remains a challenge. Herein we systematically study the surface ligand dynamics and ligand−metal core interactions of peptide-protected gold nanoclusters (AuNCs) with combined experimental characterizations and theoretical molecular simulations. We show that the peptide sequence plays an important role in determining the surface peptide structuring, interfacial water dynamics and ligand−Au core interaction, which can be tailored by controlling peptide acetylation, constituent amino acid electron donating/withdrawing capacity, aromaticity/hydrophobicity and by adjusting environmental pH. Specifically, emission enhancement is achieved through increasing the electron density of surface ligands in proximity to the Au core, discouraging photoinduced quenching, and by reducing the amount of surfacebound water molecules. These findings provide key design principles for understanding the surface dynamics of peptideprotected nanoparticles and maximizing the photoluminescence of metallic clusters through the exploitation of biologically relevant ligand properties. | es_ES |
dc.description.sponsorship | M.M.S. and Y.L. acknowledge support from the ERC Seventh Framework Programme Consolidator grant “Naturale CG” [616417]. P.C. acknowledges the Australian Government for provision of an Australian Postgraduate Award (APA). M.M.S. and M.R.T. acknowledge support from the Engineering and Physical Sciences Research Council (EPSRC) i-sense IRC in Early Warning Sensing Systems for Infectious Diseases [EP/ K031953/1]. M.M.M. was supported by the FP7Marie Curie Action TIME TO MATURE [625472]. This research was undertaken with the assistance of resources from the National Computational Infrastructure (NCI) [e87] and Melbourne Bioinformatics, Australia. I.Y. and M.M.S. acknowledge the Australian Research Council for financial support under the Discovery Project scheme [DP140101888 and DP170100511]. M.M.S. acknowledges the EPSRC grant “Bio-functionalized Nanomaterials for Ultra-sensitive Biosensing” [EP/K020641/ 1]. The Ganesha X-ray scattering apparatus used for this research was purchased under EPSRC Grant “Atoms to Applications” [EP/K035746/1]. The authors acknowledge use of the Facility for Imaging by Light Microscopy (FILM) at Imperial College London. P.C., A.J.C., N.T. and I.Y. thank Prof. Stefano Corni, Dr. Matthew Penna and Prof. Jeffrey Reimers for useful discussions. Experimental raw data are available at DOI: 10.5281/zenodo.2202306 and molecular simulation data are available upon request from irene. yarovsky@rmit.edu.au. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | American Chemical Society | es_ES |
dc.rights | info:eu-repo/semantics/closedAccess | es_ES |
dc.title | Surface Dynamics and Ligand−Core Interactions of Quantum Sized Photoluminescent Gold Nanoclusters | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.identifier.doi | 10.1021/jacs.8b04436 | - |
dadun.citation.endingPage | 18226 | es_ES |
dadun.citation.publicationName | J. Am. Chem. Soc. | es_ES |
dadun.citation.startingPage | 18217 | es_ES |
dadun.citation.volume | 140 | es_ES |
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