1
|
Shchaslyvyi AY, Antonenko SV, Tesliuk MG, Telegeev GD. Current State of Human Gene Therapy: Approved Products and Vectors. Pharmaceuticals (Basel) 2023; 16:1416. [PMID: 37895887 PMCID: PMC10609992 DOI: 10.3390/ph16101416] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/13/2023] [Accepted: 09/19/2023] [Indexed: 10/29/2023] Open
Abstract
In the realm of gene therapy, a pivotal moment arrived with Paul Berg's groundbreaking identification of the first recombinant DNA in 1972. This achievement set the stage for future breakthroughs. Conditions once considered undefeatable, like melanoma, pancreatic cancer, and a host of other ailments, are now being addressed at their root cause-the genetic level. Presently, the gene therapy landscape stands adorned with 22 approved in vivo and ex vivo products, including IMLYGIC, LUXTURNA, Zolgensma, Spinraza, Patisiran, and many more. In this comprehensive exploration, we delve into a rich assortment of 16 drugs, from siRNA, miRNA, and CRISPR/Cas9 to DNA aptamers and TRAIL/APO2L, as well as 46 carriers, from AAV, AdV, LNPs, and exosomes to naked mRNA, sonoporation, and magnetofection. The article also discusses the advantages and disadvantages of each product and vector type, as well as the current challenges faced in the practical use of gene therapy and its future potential.
Collapse
Affiliation(s)
- Aladdin Y. Shchaslyvyi
- Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, 150, Zabolotnogo Str., 03143 Kyiv, Ukraine; (S.V.A.); (M.G.T.); (G.D.T.)
| | | | | | | |
Collapse
|
2
|
Groysbeck N, Hanss V, Donzeau M, Strub JM, Cianférani S, Spehner D, Bahri M, Ersen O, Eltsov M, Schultz P, Zuber G. Bioactivated and PEG-Protected Circa 2 nm Gold Nanoparticles for in Cell Labelling and Cryo-Electron Microscopy. SMALL METHODS 2023; 7:e2300098. [PMID: 37035956 DOI: 10.1002/smtd.202300098] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/09/2023] [Indexed: 06/09/2023]
Abstract
Advances in cryo-electron microscopy (EM) enable imaging of protein assemblies within mammalian cells in a near native state when samples are preserved by cryogenic vitrification. To accompany this progress, specialized EM labelling protocols must be developed. Gold nanoparticles (AuNPs) of 2 nm are synthesized and functionalized to bind selected intracellular targets inside living human cells and to be detected in vitreous sections. As a proof of concept, thioaminobenzoate-, thionitrobenzoate-coordinated gold nanoparticles are functionalized on their surface with SV40 Nuclear Localization Signal (NLS)-containing peptides and 2 kDa polyethyleneglycols (PEG) by thiolate exchange to target the importin-mediated nuclear machinery and facilitate cytosolic diffusion by shielding the AuNP surface from non-specific binding to cell components, respectively. After delivery by electroporation into the cytoplasm of living human cells, the PEG-coated AuNPs diffuse freely in the cytoplasm but do not enter the nucleus. Incorporation of NLS within the PEG coverage promotes a quick nuclear import of the nanoparticles in relation to the density of NLS onto the AuNPs. Cryo-EM of vitreous cell sections demonstrate the presence of 2 nm AuNPs as single entities in the nucleus. Biofunctionalized AuNPs combined with live-cell electroporation procedures are thus potent labeling tools for the identification of macromolecules in cellular cryo-EM.
Collapse
Affiliation(s)
- Nadja Groysbeck
- Université de Strasbourg - CNRS, UMR 7242, Biotechnologie et Signalisation Cellulaire, Boulevard Sebastien Brant, Illkirch, F-67400, France
| | - Victor Hanss
- Centre for Integrative Biology (CBI), Department of Integrated Structural Biology, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), 1 rue Laurent Fries, BP10142, Illkirch Cedex, F-67404, France
| | - Mariel Donzeau
- Université de Strasbourg - CNRS, UMR 7242, Biotechnologie et Signalisation Cellulaire, Boulevard Sebastien Brant, Illkirch, F-67400, France
| | - Jean-Marc Strub
- Laboratoire de Spectrométrie de Masse BioOrganique, Université de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, F-67000, France
| | - Sarah Cianférani
- Laboratoire de Spectrométrie de Masse BioOrganique, Université de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, F-67000, France
| | - Danièle Spehner
- Centre for Integrative Biology (CBI), Department of Integrated Structural Biology, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), 1 rue Laurent Fries, BP10142, Illkirch Cedex, F-67404, France
| | - Mounib Bahri
- Albert Crewe Centre, University of Liverpool, 4. Waterhouse Building, Block C, 1-3 Brownlow Street, London, L69 3GL, UK
| | - Ovidiu Ersen
- Université de Strasbourg - CNRS, UMR 7504, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), 23 rue de Loess, Strasbourg, 67034, France
| | - Mikhael Eltsov
- Centre for Integrative Biology (CBI), Department of Integrated Structural Biology, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), 1 rue Laurent Fries, BP10142, Illkirch Cedex, F-67404, France
| | - Patrick Schultz
- Centre for Integrative Biology (CBI), Department of Integrated Structural Biology, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), 1 rue Laurent Fries, BP10142, Illkirch Cedex, F-67404, France
| | - Guy Zuber
- Université de Strasbourg - CNRS, UMR 7242, Biotechnologie et Signalisation Cellulaire, Boulevard Sebastien Brant, Illkirch, F-67400, France
| |
Collapse
|
3
|
Jiang M, Gupta A, Zhang X, Chattopadhyay AN, Fedeli S, Huang R, Yang J, Rotello VM. Identification of Proteins Using Supramolecular Gold Nanoparticle-Dye Sensor Arrays. ANALYSIS & SENSING 2023; 3:e202200080. [PMID: 37250385 PMCID: PMC10211330 DOI: 10.1002/anse.202200080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Indexed: 05/31/2023]
Abstract
The rapid detection of proteins is very important in the early diagnosis of diseases. Gold nanoparticles (AuNPs) can be engineered to bind biomolecules efficiently and differentially. Cross-reactive sensor arrays have high sensitivity for sensing proteins using differential interactions between sensor elements and bioanalytes. A new sensor array was fabricated using surface-charged AuNPs with dyes supramolecularly encapsulated into the AuNP monolayer. The fluorescence of dyes is partially quenched by the AuNPs and can be restored or further quenched due to the differential interactions between AuNPs with proteins. This sensing system enables the discrimination of proteins in both buffer and human serum, providing a potential tool for real-world disease diagnostics.
Collapse
Affiliation(s)
- Mingdi Jiang
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Aarohi Gupta
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Xianzhi Zhang
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Aritra Nath Chattopadhyay
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Stefano Fedeli
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Rui Huang
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Junwhee Yang
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Vincent M Rotello
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| |
Collapse
|
4
|
Malawska KJ, Takano S, Oisaki K, Yanagisawa H, Kikkawa M, Tsukuda T, Kanai M. Bioconjugation of Au 25 Nanocluster to Monoclonal Antibody at Tryptophan. Bioconjug Chem 2023. [PMID: 36893358 DOI: 10.1021/acs.bioconjchem.3c00069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
We report the first bioconjugation of Au25 nanocluster to a monoclonal antibody at scarcely exposed tryptophan (Trp) residues toward the development of high-resolution probes for cryogenic electron microscopy (cryo-EM) and tomography (cryo-ET). To achieve this, we improved the Trp-selective bioconjugation using hydroxylamine (ABNOH) reagents instead of previously developed N-oxyl radicals (ABNO). This new protocol allowed for the application of Trp-selective bioconjugation to acid-sensitive proteins such as antibodies. We found that a two-step procedure utilizing first Trp-selective bioconjugation for the introduction of azide groups to the protein and then strain-promoted azide-alkyne cycloaddition (SPAAC) to attach a bicyclononyne (BCN)-presenting redox-sensitive Au25 nanocluster was essential for a scalable procedure. Covalent labeling of the antibody with gold nanoclusters was confirmed by various analytical methods, including cryo-EM analysis of the Au25 nanocluster conjugates.
Collapse
Affiliation(s)
- Katarzyna Joanna Malawska
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shinjiro Takano
- Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kounosuke Oisaki
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Haruaki Yanagisawa
- Department of Cell Biology and Anatomy, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masahide Kikkawa
- Department of Cell Biology and Anatomy, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Tatsuya Tsukuda
- Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Motomu Kanai
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| |
Collapse
|
5
|
Lira AL, Mina N, Bonturi CR, Nogueira RS, Torquato RJS, Oliva MLV, Sousa AA. Anionic Ultrasmall Gold Nanoparticles Bind to Coagulation Factors and Disturb Normal Hemostatic Balance. Chem Res Toxicol 2022; 35:1558-1569. [PMID: 36018252 DOI: 10.1021/acs.chemrestox.2c00190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ultrasmall gold nanoparticles (usNPs) and nanoclusters are an emerging class of nanomaterials exhibiting distinctive physicochemical properties and in vivo behaviors. Although understanding the interactions of usNPs with blood components is of fundamental importance to advance their clinical translation, currently, little is known about the way that usNPs interact with the hemostatic system. This study describes the effects of a model anionic p-mercaptobenzoic acid-coated usNP on the coagulation cascade, with particular emphasis on the contact pathway. It is found that in a purified system, the anionic usNPs bind to and activate factor XII (FXII). The formed usNP-FXII complexes are short-lived (residence time of ∼10 s) and characterized by an affinity constant of ∼200 nM. In human plasma, the anionic usNPs activate the contact pathway and promote coagulation. The usNPs also exhibit anticoagulant activity in plasma by interfering with the thrombin-mediated cleavage of fibrinogen. Taken together, these findings establish that anionic usNPs can disturb the normal hemostatic balance, which in turn may hinder their clinical translation. Finally, it is shown that usNPs can be designed to be nearly inert in plasma by surface coating with the natural peptide glutathione.
Collapse
Affiliation(s)
- André L Lira
- Department of Biochemistry, Federal University of São Paulo, São Paulo, São Paulo 04044-020, Brazil
| | - Natasha Mina
- Department of Biochemistry, Federal University of São Paulo, São Paulo, São Paulo 04044-020, Brazil
| | - Camila R Bonturi
- Department of Biochemistry, Federal University of São Paulo, São Paulo, São Paulo 04044-020, Brazil
| | - Ruben S Nogueira
- Department of Biochemistry, Federal University of São Paulo, São Paulo, São Paulo 04044-020, Brazil
| | - Ricardo J S Torquato
- Department of Biochemistry, Federal University of São Paulo, São Paulo, São Paulo 04044-020, Brazil
| | - Maria Luiza V Oliva
- Department of Biochemistry, Federal University of São Paulo, São Paulo, São Paulo 04044-020, Brazil
| | - Alioscka A Sousa
- Department of Biochemistry, Federal University of São Paulo, São Paulo, São Paulo 04044-020, Brazil
| |
Collapse
|
6
|
Gold nanomaterials and their potential use as cryo-electron tomography labels. J Struct Biol 2022; 214:107880. [PMID: 35809758 DOI: 10.1016/j.jsb.2022.107880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 06/30/2022] [Accepted: 07/04/2022] [Indexed: 12/14/2022]
Abstract
Rapid advances in cryo-electron tomography (cryo-ET) are driving a revolution in cellular structural biology. However, unambiguous identification of specific biomolecules within cellular tomograms remains challenging. Overcoming this obstacle and reliably identifying targets in the crowded cellular environment is of major importance for the understanding of cellular function and is a pre-requisite for high-resolution structural analysis. The use of highly-specific, readily visualised and adjustable labels would help mitigate this issue, improving both data quality and sample throughput. While progress has been made in cryo-CLEM and in the development of cloneable high-density tags, technical issues persist and a robust 'cryo-GFP' remains elusive. Readily-synthesized gold nanomaterials conjugated to small 'affinity modules' may represent a solution. The synthesis of materials including gold nanoclusters (AuNCs) and gold nanoparticles (AuNPs) is increasingly well understood and is now within the capabilities of non-specialist laboratories. The remarkable chemical and photophysical properties of <3nm diameter nanomaterials and their emergence as tools with widespread biomedical application presents significant opportunities to the cryo-microscopy community. In this review, we will outline developments in the synthesis, functionalisation and labelling uses of both AuNPs and AuNCs in cryo-ET, while discussing their potential as multi-modal probes for cryo-CLEM.
Collapse
|
7
|
He L, Wang C, Chen X, Jiang L, Ji Y, Li H, Liu Y, Wang J. Preparation of Tin-Antimony anode modified with carbon nanotubes for electrochemical treatment of coking wastewater. CHEMOSPHERE 2022; 288:132362. [PMID: 34592208 DOI: 10.1016/j.chemosphere.2021.132362] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 09/22/2021] [Accepted: 09/24/2021] [Indexed: 06/13/2023]
Abstract
To improve the electrocatalytic activity, carbon nanotubes (CNTs) were used to modify a titanium-supported tin-antimony anode (Ti/SnO2-Sb). Compared to a Ti/SnO2-Sb anode, the Ti/SnO2-Sb-CNTs anode exhibited a higher oxygen evolution potential (1.62 V), smaller crystalline volume (71.23 Å3), larger active surface area (0.371 mC cm-2), lower charge transfer resistance (8.24 Ω), and longer service life (291 h). The CNTs provided the Ti/SnO2-Sb anode with effective electrocatalytic activity, conductivity and stability. To evaluate its performance, the Ti/SnO2-Sb-CNTs anode was utilized for the treatment of coking wastewater. The chemical oxygen demand (COD) and total organic carbon (TOC) removal yields of the coking wastewater reached 83.05% and 74.56% under the optimal current density of 25 mA m-2, Na2SO4 concentration of 35 mM, and plate spacing of 10 mm. UV254, ultraviolet-visible absorption spectroscopy, excitation-emission matrix spectra spectroscopy, and Fourier-transform infrared spectroscopy analyses showed that the aromatic and nitrogenous compounds in the coking wastewater were degraded. Furthermore, the electrochemical treatment could effectively reduce the toxicity of the coking wastewater. The energy consumption of the coking wastewater treatment was reduced to 396.56 kWh (kg COD)-1. This study provides a basis engineering application of the electrochemical oxidation of coking wastewater.
Collapse
Affiliation(s)
- Lei He
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Ding 11#, Xueyuan Road, Haidian District, Beijing, 100083, PR China.
| | - Chunrong Wang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Ding 11#, Xueyuan Road, Haidian District, Beijing, 100083, PR China.
| | - Xiaoya Chen
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Ding 11#, Xueyuan Road, Haidian District, Beijing, 100083, PR China.
| | - Longxin Jiang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Ding 11#, Xueyuan Road, Haidian District, Beijing, 100083, PR China.
| | - Yuxian Ji
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Ding 11#, Xueyuan Road, Haidian District, Beijing, 100083, PR China.
| | - Haiyan Li
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Ding 11#, Xueyuan Road, Haidian District, Beijing, 100083, PR China.
| | - Yingsong Liu
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Ding 11#, Xueyuan Road, Haidian District, Beijing, 100083, PR China.
| | - Jianbing Wang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Ding 11#, Xueyuan Road, Haidian District, Beijing, 100083, PR China.
| |
Collapse
|
8
|
Apostolopoulou A, Chiotellis A, Salvanou EA, Makrypidi K, Tsoukalas C, Kapiris F, Paravatou-Petsotas M, Papadopoulos M, Pirmettis IC, Koźmiński P, Bouziotis P. Synthesis and In Vitro Evaluation of Gold Nanoparticles Functionalized with Thiol Ligands for Robust Radiolabeling with 99mTc. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2406. [PMID: 34578721 PMCID: PMC8471789 DOI: 10.3390/nano11092406] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/08/2021] [Accepted: 09/10/2021] [Indexed: 12/12/2022]
Abstract
Radiolabeled gold nanoparticles (AuNPs) have been widely used for cancer diagnosis and therapy over recent decades. In this study, we focused on the development and in vitro evaluation of four new Au nanoconjugates radiolabeled with technetium-99m (99mTc) via thiol-bearing ligands attached to the NP surface. More specifically, AuNPs of two different sizes (2 nm and 20 nm, referred to as Au(2) and Au(20), respectively) were functionalized with two bifunctional thiol ligands (referred to as L1H and L2H). The shape, size, and morphology of both bare and ligand-bearing AuNPs were characterized by transmission electron microscopy (TEM) and dynamic light scattering (DLS) techniques. In vitro cytotoxicity was assessed in 4T1 murine mammary cancer cells. The AuNPs were successfully radiolabeled with 99mTc-carbonyls at high radiochemical purity (>95%) and showed excellent in vitro stability in competition studies with cysteine and histidine. Moreover, lipophilicity studies were performed in order to determine the lipophilicity of the radiolabeled conjugates, while a hemolysis assay was performed to investigate the biocompatibility of the bare and functionalized AuNPs. We have shown that the functionalized AuNPs developed in this study lead to stable radiolabeled nanoconstructs with the potential to be applied in multimodality imaging or for in vivo tracking of drug-carrying AuNPs.
Collapse
Affiliation(s)
- Adamantia Apostolopoulou
- National Center for Scientific Research “Demokritos”, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, Agia Paraskevi, 15341 Athens, Greece; (A.A.); (A.C.); (E.-A.S.); (K.M.); (C.T.); (F.K.); (M.P.-P.); (M.P.); (I.C.P.)
- Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zographou, 15771 Athens, Greece
| | - Aristeidis Chiotellis
- National Center for Scientific Research “Demokritos”, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, Agia Paraskevi, 15341 Athens, Greece; (A.A.); (A.C.); (E.-A.S.); (K.M.); (C.T.); (F.K.); (M.P.-P.); (M.P.); (I.C.P.)
| | - Evangelia-Alexandra Salvanou
- National Center for Scientific Research “Demokritos”, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, Agia Paraskevi, 15341 Athens, Greece; (A.A.); (A.C.); (E.-A.S.); (K.M.); (C.T.); (F.K.); (M.P.-P.); (M.P.); (I.C.P.)
| | - Konstantina Makrypidi
- National Center for Scientific Research “Demokritos”, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, Agia Paraskevi, 15341 Athens, Greece; (A.A.); (A.C.); (E.-A.S.); (K.M.); (C.T.); (F.K.); (M.P.-P.); (M.P.); (I.C.P.)
| | - Charalampos Tsoukalas
- National Center for Scientific Research “Demokritos”, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, Agia Paraskevi, 15341 Athens, Greece; (A.A.); (A.C.); (E.-A.S.); (K.M.); (C.T.); (F.K.); (M.P.-P.); (M.P.); (I.C.P.)
| | - Fotis Kapiris
- National Center for Scientific Research “Demokritos”, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, Agia Paraskevi, 15341 Athens, Greece; (A.A.); (A.C.); (E.-A.S.); (K.M.); (C.T.); (F.K.); (M.P.-P.); (M.P.); (I.C.P.)
| | - Maria Paravatou-Petsotas
- National Center for Scientific Research “Demokritos”, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, Agia Paraskevi, 15341 Athens, Greece; (A.A.); (A.C.); (E.-A.S.); (K.M.); (C.T.); (F.K.); (M.P.-P.); (M.P.); (I.C.P.)
| | - Minas Papadopoulos
- National Center for Scientific Research “Demokritos”, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, Agia Paraskevi, 15341 Athens, Greece; (A.A.); (A.C.); (E.-A.S.); (K.M.); (C.T.); (F.K.); (M.P.-P.); (M.P.); (I.C.P.)
| | - Ioannis C. Pirmettis
- National Center for Scientific Research “Demokritos”, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, Agia Paraskevi, 15341 Athens, Greece; (A.A.); (A.C.); (E.-A.S.); (K.M.); (C.T.); (F.K.); (M.P.-P.); (M.P.); (I.C.P.)
| | - Przemysław Koźmiński
- Centre of Radiochemistry and Nuclear Chemistry, Institute of Nuclear Chemistry and Technology, Dorodna 16 Str., 03-195 Warsaw, Poland;
| | - Penelope Bouziotis
- National Center for Scientific Research “Demokritos”, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, Agia Paraskevi, 15341 Athens, Greece; (A.A.); (A.C.); (E.-A.S.); (K.M.); (C.T.); (F.K.); (M.P.-P.); (M.P.); (I.C.P.)
| |
Collapse
|
9
|
Sharifiaghdam Z, Dalouchi F, Sharifiaghdam M, Shaabani E, Ramezani F, Nikbakht F, Azizi Y. Curcumin-coated gold nanoparticles attenuate doxorubicin-induced cardiotoxicity via regulating apoptosis in a mouse model. Clin Exp Pharmacol Physiol 2021; 49:70-83. [PMID: 34449914 DOI: 10.1111/1440-1681.13579] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 08/21/2021] [Accepted: 08/24/2021] [Indexed: 11/30/2022]
Abstract
Doxorubicin (DOX) is one of the most widely used chemotherapy agents; however, its nonselective effect causes cardiotoxicity. Curcumin (Cur), a well known dietary polyphenol, could exert a significant cardioprotective effect, but the biological application of this substance is limited by its chemical insolubility. To overcome this limitation, in this study, we synthesised gold nanoparticles based on Cur (Cur-AuNPs). Ultraviolet-visible (UV-Vis) absorbance spectroscopy and transmission electron microscopy (TEM) were performed for the characterisation of synthesised NPs, and Fourier transform infrared (FTIR) spectroscopy were applied to detect Cur on the surface of AuNPs. Its cytotoxicity effect on H9c2 cells was evaluated using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The biological efficacy of Cur-AuNPs was assessed after acute cardiotoxicity induction in BALB/c mice with DOX injection. The serum biomarkers, myocardial histological changes, and cardiomyocyte apoptosis were then measured. The results revealed that the heart protection by Cur-AuNPs is more effective than Cur alone. Heart protective effect of Cur-AuNPs was evident both in the short-term (24 hours) and long-term (14 days) study. The results of Cur-AuNPs400 after 24 hours of toxicity induction displayed the reduction of the cardiac injury serum biomarkers (LDH, CK-MB, cTnI, ADT, and ALT) and apoptotic proteins (Bax and Caspase-3), as well as increase of Bcl-2 anti-apoptotic proteins without any sign of interfibrillar haemorrhage and intercellular spaces in the heart tissue microscopic images. Our long-term study signifies that Cur-AuNPs400 in DOX-intoxicated mice could successfully inhibit body and heart weight loss in comparison to DOX group.
Collapse
Affiliation(s)
- Zeynab Sharifiaghdam
- Student Research Committee, Iran University of Medical Sciences, Tehran, Iran.,Department of Physiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Fereshteh Dalouchi
- Department of Physiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Maryam Sharifiaghdam
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine (SATiM), Tehran University of Medical Sciences (TUMS, Tehran, Iran.,Laboratory of General Biochemistry & Physical Pharmacy, Ghent University, Ghent, Belgium
| | - Elnaz Shaabani
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine (SATiM), Tehran University of Medical Sciences (TUMS, Tehran, Iran.,Laboratory of General Biochemistry & Physical Pharmacy, Ghent University, Ghent, Belgium
| | - Fatemeh Ramezani
- Physiology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Farnaz Nikbakht
- Department of Physiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Yaser Azizi
- Department of Physiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.,Physiology Research Center, Iran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
10
|
Analysis of the Reduction of 4-Nitrophenol Catalyzed by Para-Mercaptobenzoic Acid Capped Magic Number Gold Clusters. Catal Letters 2021. [DOI: 10.1007/s10562-021-03727-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
11
|
Abstract
The majority of biological processes are regulated by enzymes, precise control over specific enzymes could create the potential for controlling cellular processes remotely. We show that the thermophilic enzyme thermolysin can be remotely activated in 17.76 MHz radiofrequency (RF) fields when covalently attached to 6.1 nm gold coated magnetite nanoparticles. Without raising the bulk solution temperature, we observe enzyme activity as if the solution was 16 ± 2 °C warmer in RF fields-an increase in enzymatic rate of 129 ± 8%. Kinetics studies show that the activity increase of the enzyme is consistent with the induced fit of a hot enzyme with cold substrate.
Collapse
|
12
|
Moradi F, Rezaee Ebrahim Saraee K, Abdul Sani S, Bradley D. Metallic nanoparticle radiosensitization: The role of Monte Carlo simulations towards progress. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2020.109294] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
13
|
Banerjee S, Liu CH, Jensen KMØ, Juhás P, Lee JD, Tofanelli M, Ackerson CJ, Murray CB, Billinge SJL. Cluster-mining: an approach for determining core structures of metallic nanoparticles from atomic pair distribution function data. Acta Crystallogr A Found Adv 2020; 76:24-31. [PMID: 31908346 PMCID: PMC7045905 DOI: 10.1107/s2053273319013214] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 09/25/2019] [Indexed: 11/10/2022] Open
Abstract
A novel approach for finding and evaluating structural models of small metallic nanoparticles is presented. Rather than fitting a single model with many degrees of freedom, libraries of clusters from multiple structural motifs are built algorithmically and individually refined against experimental pair distribution functions. Each cluster fit is highly constrained. The approach, called cluster-mining, returns all candidate structure models that are consistent with the data as measured by a goodness of fit. It is highly automated, easy to use, and yields models that are more physically realistic and result in better agreement to the data than models based on cubic close-packed crystallographic cores, often reported in the literature for metallic nanoparticles.
Collapse
Affiliation(s)
- Soham Banerjee
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY 10027, USA
| | - Chia Hao Liu
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY 10027, USA
| | - Kirsten M Ø Jensen
- Department of Chemistry, University of Copenhagen, Copenhagen, DK-2100, Denmark
| | - Pavol Juhás
- Computational Science Initiative, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Jennifer D Lee
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Marcus Tofanelli
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
| | | | - Christopher B Murray
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Simon J L Billinge
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY 10027, USA
| |
Collapse
|
14
|
Colazzo L, Mohammed MSG, Gallardo A, Abd El-Fattah ZM, Pomposo JA, Jelínek P, de Oteyza DG. Controlling the stereospecific bonding motif of Au-thiolate links. NANOSCALE 2019; 11:15567-15575. [PMID: 31402370 DOI: 10.1039/c9nr04383g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Over the last decades, organosulfur compounds at the interface of noble metals have proved to be extremely versatile systems for both fundamental and applied research. However, the anchoring of thiols to gold remained an object of controversy for a long time. The RS-Au-SR linkage, in particular, is a robust bonding configuration that displays interesting properties. It is generated spontaneously at room temperature and can be used for the production of extended molecular nanostructures. In this work we explore the behavior of 1,4-bis(4-mercaptophenyl)benzene (BMB) on the Au(111) surface, which results in the formation of 2D crystalline metal-organic assemblies stabilized by this type of Au-thiolate bonds. We show how to control the thiolate's stereospecific bonding motif and thereby choose whether to form ordered arrays of Au3BMB3 units with embedded triangular nanopores or linearly stacked metal-organic chains. The former turn out to be thermodynamically favored structures and display confinement of the underneath Au(111) surface state. The electronic properties of single molecules as well as of the 2D crystalline self-assemblies have been characterized both on the metal-organic backbone and inside the associated pores.
Collapse
Affiliation(s)
- Luciano Colazzo
- Donostia International Physics Center, 20018 San Sebastián, Spain. and Centro de Física de Materiales (CFM-MPC), CSIC-UPV/EHU, 20018 San Sebastián, Spain
| | - Mohammed S G Mohammed
- Donostia International Physics Center, 20018 San Sebastián, Spain. and Centro de Física de Materiales (CFM-MPC), CSIC-UPV/EHU, 20018 San Sebastián, Spain
| | - Aurelio Gallardo
- Institute of Physics, The Czech Academy of Sciences, 162 00 Prague, Czech Republic and Faculty of Mathematics and Physics, Charles University, 180 00 Prague, Czech Republic
| | | | - José A Pomposo
- Centro de Física de Materiales (CFM-MPC), CSIC-UPV/EHU, 20018 San Sebastián, Spain and Ikerbasque, Basque Foundation for Science, Bilbao, Spain and Departamento de Física de Materiales, Universidad del País Vasco (UPV/EHU), Apartado 1072, E-20800 San Sebastián, Spain
| | - Pavel Jelínek
- Institute of Physics, The Czech Academy of Sciences, 162 00 Prague, Czech Republic
| | - Dimas G de Oteyza
- Donostia International Physics Center, 20018 San Sebastián, Spain. and Centro de Física de Materiales (CFM-MPC), CSIC-UPV/EHU, 20018 San Sebastián, Spain and Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| |
Collapse
|
15
|
Yamanaka T, De Nicola A, Munaò G, Soares TA, Milano G. Effect of the ligand’s bulkiness on the shape of functionalized gold nanoparticles in aqueous solutions: A molecular dynamics study. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.07.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|
16
|
Zuber G, Weiss E, Chiper M. Biocompatible gold nanoclusters: synthetic strategies and biomedical prospects. NANOTECHNOLOGY 2019; 30:352001. [PMID: 31071693 DOI: 10.1088/1361-6528/ab2088] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The latest advances concerning ultra-small gold nanoparticles (≤2 nm) commonly known as gold nanoclusters (AuNCs) are reviewed and discussed in the context of biological and biomedical applications (labeling, delivery, imaging and therapy). A great diversity of synthetic methods has been developed and optimized aiming to improve the chemical structures and physicochemical properties of the resulting AuNCs. The main synthetic approaches were surveyed with emphasis on methods leading to water-soluble AuNCs since aqueous solutions are the preferred media for biological applications. The most representative and recent experimental results are discussed in relationship to their potential for biomedical applications.
Collapse
Affiliation(s)
- Guy Zuber
- Molecular and Pharmaceutical Engineering of Biologics, CNRS-Université de Strasbourg UMR 7242, Boulevard Sebastien Brant, F-67412, Illkirch, France
| | | | | |
Collapse
|
17
|
Groysbeck N, Stoessel A, Donzeau M, da Silva EC, Lehmann M, Strub JM, Cianferani S, Dembélé K, Zuber G. Synthesis and biological evaluation of 2.4 nm thiolate-protected gold nanoparticles conjugated to Cetuximab for targeting glioblastoma cancer cells via the EGFR. NANOTECHNOLOGY 2019; 30:184005. [PMID: 30650397 DOI: 10.1088/1361-6528/aaff0a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Therapeutic monoclonal antibodies benefit to patients and the conjugation to gold nanoparticles (AuNPs) might bring additional activities to these macromolecules. However, the behavior of the conjugate will largely depend on the bulkiness of the AuNP and small sizes are moreover preferable for diffusion. Water-soluble thiolate-protected AuNPs having diameters of 2-3 nm can be synthesized with narrow polydispersity and can selectively react with incoming organic thiols via a SN2-like mechanism. We therefore synthesized a mixed thionitrobenzoic acid- , thioaminobenzoic acid-monolayered AuNP of 2.4 nm in diameter and developed a site-selective conjugation strategy to link the AuNP to Cetuximab, an anti-epidermal growth factor receptor (EGFR) antibody used in clinic. The water-soluble 80 kDa AuNP was fully characterized and then reacted to the hinge area of Cetuximab, which was selectively reduced using mild concentration of TCEP. The conjugation proceeded smoothly and could be analyzed by polyacrylamide gel electrophoresis, indicating the formation of a 1:1 AuNP-IgG conjugate as the main product. When added to EGFR expressing glioblastoma cells, the AuNP-Cetuximab conjugate selectively bound to the cell surface receptor, inhibited EGFR autophosphorylation and entered into endosomes like Cetuximab. Altogether, we describe a simple and robust protocol for a site-directed conjugation of a thiolate-protected AuNP to Cetuximab, which could be easily monitored, thereby allowing to assess the quality of the product formation. The conjugated 2.4 nm AuNP did not majorly affect the biological behavior of Cetuximab, but provided it with the electronic properties of the AuNP. This offers the ability to detect the tagged antibody and opens application for targeted cancer radiotherapy.
Collapse
Affiliation(s)
- Nadja Groysbeck
- Université de Strasbourg-CNRS, UMR 7242, Laboratoire de Biotechnologie et Signalisation Cellulaire, Boulevard Sébastien Brant, F-67400 Illkirch, France
| | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Niihori Y, Yoshida K, Hossain S, Kurashige W, Negishi Y. Deepening the Understanding of Thiolate-Protected Metal Clusters Using High-Performance Liquid Chromatography. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180357] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Yoshiki Niihori
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Kana Yoshida
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Sakiat Hossain
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Wataru Kurashige
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
- Photocatalysis International Research Center, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yuichi Negishi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
- Photocatalysis International Research Center, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| |
Collapse
|
19
|
Su H, Wang Y, Ren L, Yuan P, Teo BK, Lin S, Zheng L, Zheng N. Fractal Patterns in Nucleation and Growth of Icosahedral Core of [AunAg44–n(SC6H3F2)30]4– (n = 0–12) via ab Initio Synthesis: Continuously Tunable Composition Control. Inorg Chem 2018; 58:259-264. [DOI: 10.1021/acs.inorgchem.8b02249] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Haifeng Su
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yu Wang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Liting Ren
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Peng Yuan
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Boon K. Teo
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Shuichao Lin
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Lansun Zheng
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Nanfeng Zheng
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National & Local Joint Engineering Research Center of Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| |
Collapse
|
20
|
Hosier CA, Ackerson CJ. Regiochemistry of Thiolate for Selenolate Ligand Exchange on Gold Clusters. J Am Chem Soc 2018; 141:309-314. [PMID: 30532966 DOI: 10.1021/jacs.8b10013] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Ligand exchange is a fundamental reaction of metal nanoparticles. Multiple symmetry and kinetic exchange environments are observed for thiolate protected gold nanoparticles, but the correlation between these is unclear. Structural study of ligand exchange on chalcogenide passivated gold clusters has so-far revealed the locations of 10% or fewer of incoming ligands. In a set of 13 crystal structures, we reveal the locations of up to 17 ligands of the 18 ligands in thiolate for selenolate exchanged Au25(SeR)18- x(SR) x clusters. Overall, we see a distinct preference for the locations of thiolate and selenolate ligands that emerges over time. This most-comprehensive to-date structural study of ligand exchange on gold clusters evidences a structural basis for exchange of solvated ligands, exchange of ligands between clusters, and a net reaction that amounts to translation of ligands on the cluster surface.
Collapse
Affiliation(s)
- Christopher A Hosier
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States
| | - Christopher J Ackerson
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States
| |
Collapse
|
21
|
Yan N, Xia N, Liao L, Zhu M, Jin F, Jin R, Wu Z. Unraveling the long-pursued Au 144 structure by x-ray crystallography. SCIENCE ADVANCES 2018; 4:eaat7259. [PMID: 30333988 PMCID: PMC6184749 DOI: 10.1126/sciadv.aat7259] [Citation(s) in RCA: 196] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 08/31/2018] [Indexed: 05/20/2023]
Abstract
The transition from nanocluster to nanocrystal is a central issue in nanoscience. The atomic structure determination of metal nanoparticles in the transition size range is challenging and particularly important in understanding the quantum size effect at the atomic level. On the basis of the rationale that the intra- and interparticle weak interactions play critical roles in growing high-quality single crystals of metal nanoparticles, we have reproducibly obtained ideal crystals of Au144(SR)60 and successfully solved its structure by x-ray crystallography (XRC); this structure was theoretically predicted a decade ago and has long been pursued experimentally but without success until now. Here, XRC reveals an interesting Au12 hollow icosahedron in thiolated gold nanoclusters for the first time. The Au-Au bond length, close to that of bulk gold, shows better thermal extensibility than the other Au-Au bond lengths in Au144(SR)60, providing an atomic-level perspective because metal generally shows better thermal extensibility than nonmetal materials. Thus, our work not only reveals the mysterious, long experimentally pursued structure of a transition-sized nanoparticle but also has important implications for the growth of high-quality, single-crystal nanoparticles, as well as for the understanding of the thermal extensibility of metals from the perspective of chemical bonding.
Collapse
Affiliation(s)
- Nan Yan
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanostructures, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China
- Institute of Physical Science and Information Technology, Anhui University, Hefei 230601, P. R. China
| | - Nan Xia
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanostructures, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China
- Institute of Physical Science and Information Technology, Anhui University, Hefei 230601, P. R. China
| | - Lingwen Liao
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanostructures, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China
- Institute of Physical Science and Information Technology, Anhui University, Hefei 230601, P. R. China
| | - Min Zhu
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanostructures, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China
- Institute of Physical Science and Information Technology, Anhui University, Hefei 230601, P. R. China
| | - Fengming Jin
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanostructures, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China
- Institute of Physical Science and Information Technology, Anhui University, Hefei 230601, P. R. China
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA 15213, USA
- Corresponding author. (Z.W.); (R.J.)
| | - Zhikun Wu
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanostructures, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, P. R. China
- Institute of Physical Science and Information Technology, Anhui University, Hefei 230601, P. R. China
- Corresponding author. (Z.W.); (R.J.)
| |
Collapse
|
22
|
Verwüster E, Wruss E, Zojer E, Hofmann OT. Exploring the driving forces behind the structural assembly of biphenylthiolates on Au(111). J Chem Phys 2018; 147:024706. [PMID: 28711043 DOI: 10.1063/1.4991344] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In this contribution, we use dispersion-corrected density functional theory to study inter- and intramolecular interactions in a prototypical self-assembled monolayer (SAM) consisting of biphenylthiolates bonded to Au(111) via thiolate groups. The goal is to identify the nature of the interactions that drive the monolayer into a specific conformation. Particular focus is laid on sampling realistic structures rather than high symmetry model configurations. This is achieved by studying conceptually different local minimum structures of the SAM that are obtained via exploring the potential energy surface from systematically varied starting geometries. The six obtained packing motifs differ in the relative arrangement of the two molecules in the unit cell (co-planar versus herringbone) and in the intramolecular configuration (twisted versus planar rings). We find that van der Waals interactions within the organic adsorbate and between the adsorbate and substrate are the main reason that these molecular assemblies can form stable structures at all. The van der Waals interactions are, however, very similar for all observed motifs; by analyzing various types of interactions in the course of three notional SAM-formation steps, we find that the main driving force stabilizing the actual global minimum structure originates from electrostatic interactions between the molecules.
Collapse
Affiliation(s)
- Elisabeth Verwüster
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
| | - Elisabeth Wruss
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
| | - Egbert Zojer
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
| | - Oliver T Hofmann
- Institute of Solid State Physics, NAWI Graz, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
| |
Collapse
|
23
|
Petersen B, Roa R, Dzubiella J, Kanduč M. Ionic structure around polarizable metal nanoparticles in aqueous electrolytes. SOFT MATTER 2018; 14:4053-4063. [PMID: 29670972 PMCID: PMC5968446 DOI: 10.1039/c8sm00399h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 04/04/2018] [Indexed: 06/08/2023]
Abstract
Metal nanoparticles are receiving increased scientific attention owing to their unique physical and chemical properties that make them suitable for a wide range of applications in diverse fields, such as electrochemistry, biochemistry, and nanomedicine. Their high metallic polarizability is a crucial determinant that defines their electrostatic character in various electrolyte solutions. Here, we introduce a continuum-based model of a metal nanoparticle with explicit polarizability in the presence of different kinds of electrolytes. We employ several, variously sophisticated, theoretical approaches, corroborated by Monte Carlo simulations in order to elucidate the basic electrostatics principles of the model. We investigate how different kinds of asymmetries between the ions result in non-trivial phenomena, such as charge separation and a build-up of a so-called zero surface-charge double layer.
Collapse
Affiliation(s)
- Bendix Petersen
- Research Group for Simulations of Energy Materials , Helmholtz-Zentrum Berlin für Materialien und Energie , Hahn-Meitner-Platz 1 , D-14109 Berlin , Germany . ;
- Institut für Physik , Humboldt-Universität zu Berlin , Newtonstr. 15 , D-12489 Berlin , Germany
| | - Rafael Roa
- Research Group for Simulations of Energy Materials , Helmholtz-Zentrum Berlin für Materialien und Energie , Hahn-Meitner-Platz 1 , D-14109 Berlin , Germany . ;
- Departamento de Física Aplicada I , Facultad de Ciencias , Universidad de Málaga , Campus de Teatinos s/n , E-29071 Málaga , Spain
| | - Joachim Dzubiella
- Research Group for Simulations of Energy Materials , Helmholtz-Zentrum Berlin für Materialien und Energie , Hahn-Meitner-Platz 1 , D-14109 Berlin , Germany . ;
- Physikalisches Institut , Albert-Ludwigs-Universität Freiburg , Hermann-Herder Str. 3 , D-79104 Freiburg , Germany
| | - Matej Kanduč
- Research Group for Simulations of Energy Materials , Helmholtz-Zentrum Berlin für Materialien und Energie , Hahn-Meitner-Platz 1 , D-14109 Berlin , Germany . ;
| |
Collapse
|
24
|
Wongnongwa Y, Namuangruk S, Kungwan N, Jungsuttiwong S. Catalytic reduction mechanism of deoxygenation of NO via the CO-reaction pathway using nanoalloy Ag7Au6 clusters: density functional theory investigation. NEW J CHEM 2018. [DOI: 10.1039/c8nj00972d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The crucial step involves Ag7Au6-catalysed reduction of NO to generate N2O; deoxygenation of NO via the CO-reaction pathway is more favorable than that in the absence of CO.
Collapse
Affiliation(s)
- Yutthana Wongnongwa
- Center for Organic Electronic and Alternative Energy
- Department of Chemistry and Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Ubon Ratchathani University
- Ubon Ratchathani 34190
| | - Supawadee Namuangruk
- National Nanotechnology Center
- National Science and Technology Development Agency
- Klong Luang
- Thailand
| | - Nawee Kungwan
- Departments of Chemistry, Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
- Center of Excellence in Materials Science and Technology
| | - Siriporn Jungsuttiwong
- Center for Organic Electronic and Alternative Energy
- Department of Chemistry and Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Ubon Ratchathani University
- Ubon Ratchathani 34190
| |
Collapse
|
25
|
López-Lozano X, Plascencia-Villa G, Calero G, Whetten RL, Weissker HC. Is the largest aqueous gold cluster a superatom complex? Electronic structure & optical response of the structurally determined Au 146(p-MBA) 57. NANOSCALE 2017; 9:18629-18634. [PMID: 29182699 DOI: 10.1039/c7nr04764a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The new water-soluble gold cluster Au146(p-MBA)57, the structure of which has been recently determined at sub-atomic resolution by Vergara et al., is the largest aqueous gold cluster ever structurally determined and likewise the smallest cluster with a stacking fault. The core presents a twinned truncated octahedron, while additional peripheral gold atoms follow a C2 rotational symmetry. According to the usual counting rules of the superatom complex (SAC) model, the compound attains a number of 92 SAC electrons if the overall net charge is 3- (three additional electrons). As this is the number of electrons required for a major shell closing, the question arises of whether Au146(p-MBA)57 should be regarded as a superatom complex. Starting from the experimental coordinates we have analyzed the structure using density-functional theory. The optimized (relaxed) structure retains all the connectivity of the experimental coordinates, while removing much of its irregularities in interatomic distances, thereby enhancing the C2-symmetry feature. On analyzing the angular-momentum-projected states, we show that, despite a small gap, the electronic structure does not exhibit SAC model character. In addition, optical absorption spectra are found to be relatively smooth compared to the example of the Au144(SR)60 cluster. The Au146(SR)57 does not derive its stability from SAC character; it cannot be considered as a superatom complex.
Collapse
Affiliation(s)
- Xóchitl López-Lozano
- Department of Physics & Astronomy, The University of Texas at San Antonio, One UTSA circle, 78249-0697 San Antonio, TX, USA.
| | | | | | | | | |
Collapse
|
26
|
Structural characterization of site-modified nanocapsid with monodispersed gold clusters. Sci Rep 2017; 7:17048. [PMID: 29213060 PMCID: PMC5719084 DOI: 10.1038/s41598-017-17171-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 11/22/2017] [Indexed: 01/12/2023] Open
Abstract
Hepatitis E Virus-like particles self-assemble in to noninfectious nanocapsids that are resistant to proteolytic/acidic mucosal delivery conditions. Previously, the nanocapsid was engineered to specifically bind and enter breast cancer cells, where successful tumor targeting was demonstrated in animal models. In the present study, the nanocapsid surface was modified with a solvent-exposed cysteine to conjugate monolayer protected gold nanoclusters (AuNC). Unlike commercially available gold nanoparticles, AuNCs monodisperse in water and are composed of a discrete number of gold atoms, forming a crystalline gold core. Au102 pMBA44 (Au102) was an ideal conjugate given its small 2.5 nm size and detectability in cryoEM. Au102 was bound directly to nanocapsid surface cysteines via direct ligand exchange. In addition, Au102 was functionalized with a maleimide linker (Au102_C6MI) for maleimide-thiol conjugation to nanocapsid cysteines. The AuNC-bound nanocapsid constructs were conjugated in various conditions. We found Au102_C6MI to bind nanocapsid more efficiently, while Au102 remained more soluble over time. Nanocapsids conjugated to Au102_C6MI were imaged in cryoEM for single particle reconstruction to localize AuNC position on the nanocapsid surface. We resolved five unique high intensity volumes that formed a ring-shaped density at the 5-fold symmetry center. This finding was further supported by independent rigid modeling.
Collapse
|
27
|
Tiekink ER, Henderson W. Coordination chemistry of 3- and 4-mercaptobenzoate ligands: Versatile hydrogen-bonding isomers of the thiosalicylate (2-mercaptobenzoate) ligand. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.03.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
28
|
Black DM, Crittenden CM, Brodbelt JS, Whetten RL. Ultraviolet Photodissociation of Selected Gold Clusters: Ultraefficient Unstapling and Ligand Stripping of Au 25(pMBA) 18 and Au 36(pMBA) 24. J Phys Chem Lett 2017; 8:1283-1289. [PMID: 28234006 DOI: 10.1021/acs.jpclett.7b00442] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We report the first results of ultraviolet photodissociation (UVPD) mass spectrometry of trapped monolayer-protected cluster (MPC) ions generated by electrospray ionization. Gold clusters Au25(pMBA)18 and Au36(pMBA)24 (pMBA = para-mercaptobenzoic acid) were analyzed in both the positive and negative modes. Whereas activation methods including collisional- and electron-based methods produced relatively few fragment ions, even a single ultraviolet pulse (at λ = 193 nm) caused extensive fragmentation of the positively charged clusters. Upon photoactivation using a low number of laser pulses, the staple motifs of both clusters were cleaved and stripped of the protecting ligand portions without removal of any contained gold atoms. This striking process involved Au-S and C-S bond cleavages via a pathway made possible by 6.4 eV photon absorption. Monomer evaporation (neutral gold atom loss) occurred upon exposure to multiple pulses, resulting in a size series of bare gold-cluster ions. All tandem mass spectrometric methods produced the singly charged ring tetramer ion, [Au4(pMBA)4 + Na]+, for each cluster.
Collapse
Affiliation(s)
- David M Black
- Department of Physics and Astronomy, The University of Texas at San Antonio , San Antonio, Texas 78249, United States
| | | | - Jennifer S Brodbelt
- Department of Chemistry, The University of Texas at Austin , Austin, Texas 78712, United States
| | - Robert L Whetten
- Department of Physics and Astronomy, The University of Texas at San Antonio , San Antonio, Texas 78249, United States
| |
Collapse
|
29
|
Exploring the atomic structure of 1.8nm monolayer-protected gold clusters with aberration-corrected STEM. Ultramicroscopy 2016; 176:146-150. [PMID: 28342572 DOI: 10.1016/j.ultramic.2016.11.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 10/07/2016] [Accepted: 11/05/2016] [Indexed: 12/25/2022]
Abstract
Monolayer-protected (MP) Au clusters present attractive quantum systems with a range of potential applications e.g. in catalysis. Knowledge of the atomic structure is needed to obtain a full understanding of their intriguing physical and chemical properties. Here we employed aberration-corrected scanning transmission electron microscopy (ac-STEM), combined with multislice simulations, to make a round-robin investigation of the atomic structure of chemically synthesised clusters with nominal composition Au144(SCH2CH2Ph)60 provided by two different research groups. The MP Au clusters were "weighed" by the atom counting method, based on their integrated intensities in the high angle annular dark field (HAADF) regime and calibrated exponent of the Z dependence. For atomic structure analysis, we compared experimental images of hundreds of clusters, with atomic resolution, against a variety of structural models. Across the size range 123-151 atoms, only 3% of clusters matched the theoretically predicted Au144(SR)60 structure, while a large proportion of the clusters were amorphous (i.e. did not match any model structure). However, a distinct ring-dot feature, characteristic of local icosahedral symmetry, was observed in about 20% of the clusters.
Collapse
|
30
|
Jin R, Zeng C, Zhou M, Chen Y. Atomically Precise Colloidal Metal Nanoclusters and Nanoparticles: Fundamentals and Opportunities. Chem Rev 2016; 116:10346-413. [DOI: 10.1021/acs.chemrev.5b00703] [Citation(s) in RCA: 1953] [Impact Index Per Article: 244.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Chenjie Zeng
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Meng Zhou
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Yuxiang Chen
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| |
Collapse
|
31
|
Alvarez MM, Chen J, Plascencia-Villa G, Black DM, Griffith WP, Garzon IL, José Yacamán M, Demeler B, Whetten RL. Hidden Components in Aqueous "Gold-144" Fractionated by PAGE: High-Resolution Orbitrap ESI-MS Identifies the Gold-102 and Higher All-Aromatic Au-pMBA Cluster Compounds. J Phys Chem B 2016; 120:6430-8. [PMID: 27275518 PMCID: PMC6666316 DOI: 10.1021/acs.jpcb.6b04525] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Experimental and theoretical evidence reveals the resilience and stability of the larger aqueous gold clusters protected with p-mercaptobenzoic acid ligands (pMBA) of composition Aun(pMBA)p or (n, p). The Au144(pMBA)60, (144, 60), or gold-144 aqueous gold cluster is considered special because of its high symmetry, abundance, and icosahedral structure as well as its many potential uses in material and biological sciences. Yet, to this date, direct confirmation of its precise composition and total structure remains elusive. Results presented here from characterization via high-resolution electrospray ionization mass spectrometry on an Orbitrap instrument confirm Au102(pMBA)44 at isotopic resolution. Further, what usually appears as a single band for (144, 60) in electrophoresis (PAGE) is shown to also contain the (130, 50), recently determined to have a truncated-decahedral structure, and a (137, 56) component in addition to the dominant (144, 60) compound of chiral-icosahedral structure. This finding is significant in that it reveals the existence of structures never before observed in all-aromatic water-soluble species while pointing out the path toward elucidation of the thermodynamic control of protected gold nanocrystal formation.
Collapse
Affiliation(s)
- Marcos M. Alvarez
- Department of Physics & Astronomy, University of Texas, San Antonio, TX, 78249, USA
| | - Jenny Chen
- ThermoFisher Scientific 355 River Oaks Pkwy, San Jose, CA 95134, USA
| | | | - David M. Black
- Department of Physics & Astronomy, University of Texas, San Antonio, TX, 78249, USA
| | - Wendell P. Griffith
- RCMI Protein Biomarkers Core. University of Texas, San Antonio, Texas, 78249, USA
| | - Ignacio L. Garzon
- Department of Physics & Astronomy, University of Texas, San Antonio, TX, 78249, USA
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000 México, D. F, México
| | - Miguel José Yacamán
- Department of Physics & Astronomy, University of Texas, San Antonio, TX, 78249, USA
| | - Borries Demeler
- Department of Biochemistry. University of Texas Health Science Center, San Antonio, Texas, 78229
| | - Robert L. Whetten
- Department of Physics & Astronomy, University of Texas, San Antonio, TX, 78249, USA
| |
Collapse
|
32
|
Jensen KMØ, Juhas P, Tofanelli MA, Heinecke CL, Vaughan G, Ackerson CJ, Billinge SJL. Polymorphism in magic-sized Au144(SR)60 clusters. Nat Commun 2016; 7:11859. [PMID: 27297400 PMCID: PMC4911633 DOI: 10.1038/ncomms11859] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Accepted: 05/06/2016] [Indexed: 12/23/2022] Open
Abstract
Ultra-small, magic-sized metal nanoclusters represent an important new class of materials with properties between molecules and particles. However, their small size challenges the conventional methods for structure characterization. Here we present the structure of ultra-stable Au144(SR)60 magic-sized nanoclusters obtained from atomic pair distribution function analysis of X-ray powder diffraction data. The study reveals structural polymorphism in these archetypal nanoclusters. In addition to confirming the theoretically predicted icosahedral-cored cluster, we also find samples with a truncated decahedral core structure, with some samples exhibiting a coexistence of both cluster structures. Although the clusters are monodisperse in size, structural diversity is apparent. The discovery of polymorphism may open up a new dimension in nanoscale engineering.
Collapse
Affiliation(s)
- Kirsten M Ø Jensen
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA
| | - Pavol Juhas
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Marcus A Tofanelli
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA
| | - Christine L Heinecke
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, USA
| | - Gavin Vaughan
- European Synchrotron Radiation Facility, 38043 Grenoble, France
| | | | - Simon J L Billinge
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA.,Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| |
Collapse
|
33
|
Azubel M, Kornberg RD. Synthesis of Water-Soluble, Thiolate-Protected Gold Nanoparticles Uniform in Size. NANO LETTERS 2016; 16:3348-3351. [PMID: 27042759 DOI: 10.1021/acs.nanolett.6b00981] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
By a modification of the method of Brust et al., water-soluble, thiolate-protected gold nanoparticles that are uniform in size were synthesized with no requirement for purification. The modification of the method was equilibration in the first step, which proved crucial for achieving size homogeneity. The thiol-to-gold ratio controlled the size of the particles, and the choice of thiol controlled the reactivity of the particles toward thiol exchange.
Collapse
Affiliation(s)
- Maia Azubel
- Department of Structural Biology, Stanford University School of Medicine , Stanford, California 94305, United States
| | - Roger D Kornberg
- Department of Structural Biology, Stanford University School of Medicine , Stanford, California 94305, United States
| |
Collapse
|
34
|
Sousa AA, Hassan SA, Knittel LL, Balbo A, Aronova MA, Brown PH, Schuck P, Leapman RD. Biointeractions of ultrasmall glutathione-coated gold nanoparticles: effect of small size variations. NANOSCALE 2016; 8:6577-88. [PMID: 26934984 PMCID: PMC4805117 DOI: 10.1039/c5nr07642k] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Recent in vivo studies have established ultrasmall (<3 nm) gold nanoparticles coated with glutathione (AuGSH) as a promising platform for applications in nanomedicine. However, systematic in vitro investigations to gain a more fundamental understanding of the particles' biointeractions are still lacking. Herein we examined the behavior of ultrasmall AuGSH in vitro, focusing on their ability to resist aggregation and adsorption from serum proteins. Despite having net negative charge, AuGSH particles were colloidally stable in biological media and able to resist binding from serum proteins, in agreement with the favorable bioresponses reported for AuGSH in vivo. However, our results revealed disparate behaviors depending on nanoparticle size: particles between 2 and 3 nm in core diameter were found to readily aggregate in biological media, whereas those strictly under 2 nm were exceptionally stable. Molecular dynamics simulations provided microscopic insight into interparticle interactions leading to aggregation and their sensitivity to the solution composition and particle size. These results have important implications, in that seemingly small variations in size can impact the biointeractions of ultrasmall AuGSH, and potentially of other ultrasmall nanoparticles as well.
Collapse
Affiliation(s)
- Alioscka A Sousa
- Department of Biochemistry, Federal University of São Paulo, São Paulo, SP, Brazil.
| | - Sergio A Hassan
- Center for Molecular Modeling, DCB/CIT, National Institutes of Health, Bethesda, MD, USA
| | - Luiza L Knittel
- Department of Biochemistry, Federal University of São Paulo, São Paulo, SP, Brazil.
| | - Andrea Balbo
- National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA.
| | - Maria A Aronova
- National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA.
| | - Patrick H Brown
- National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA.
| | - Peter Schuck
- National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA.
| | - Richard D Leapman
- National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA.
| |
Collapse
|
35
|
Knittel LL, Schuck P, Ackerson CJ, Sousa AA. Zwitterionic glutathione monoethyl ester as a new capping ligand for ultrasmall gold nanoparticles. RSC Adv 2016. [DOI: 10.1039/c6ra07777c] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ultrasmall gold nanoparticles coated with a zwitterionic derivative of glutathione are shown to be stable against aggregation and nonspecific binding from serum proteins.
Collapse
Affiliation(s)
- Luiza L. Knittel
- Department of Biochemistry
- Federal University of São Paulo
- São Paulo 04044
- Brazil
| | - Peter Schuck
- National Institute of Biomedical Imaging and Bioengineering
- National Institutes of Health
- Bethesda 20892
- USA
| | | | - Alioscka A. Sousa
- Department of Biochemistry
- Federal University of São Paulo
- São Paulo 04044
- Brazil
| |
Collapse
|
36
|
Udayabhaskararao T, Kundu PK, Ahrens J, Klajn R. Reversible Photoisomerization of Spiropyran on the Surfaces of Au25 Nanoclusters. Chemphyschem 2015; 17:1805-9. [PMID: 26593975 DOI: 10.1002/cphc.201500897] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Indexed: 11/06/2022]
Abstract
Au25 nanoclusters functionalized with a spiropyran molecular switch are synthesized via a ligand-exchange reaction at low temperature. The resulting nanoclusters are characterized by optical and NMR spectroscopies as well as by mass spectrometry. Spiropyran bound to nanoclusters isomerizes in a reversible fashion when exposed to UV and visible light, and its properties are similar to those of free spiropyran molecules in solution. The reversible photoisomerization entails the modulation of fluorescence as well as the light-controlled self-assembly of nanoclusters.
Collapse
Affiliation(s)
- T Udayabhaskararao
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Pintu K Kundu
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Johannes Ahrens
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Rafal Klajn
- Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, 76100, Israel.
| |
Collapse
|
37
|
Harshiny M, Matheswaran M, Arthanareeswaran G, Kumaran S, Rajasree S. Enhancement of antibacterial properties of silver nanoparticles-ceftriaxone conjugate through Mukia maderaspatana leaf extract mediated synthesis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 121:135-41. [PMID: 25982731 DOI: 10.1016/j.ecoenv.2015.04.041] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 04/21/2015] [Accepted: 04/27/2015] [Indexed: 05/09/2023]
Abstract
Green synthesis of nanoparticles with low range of toxicity and conjugation to antibiotics has become an attractive area of research for several biomedical applications. Nanoconjugates exhibited notable increase in biological activity compared to free antibiotic molecules. With this perception, we report the biosynthesis of silver nanoparticles using aqueous extract of leaves of Mukia maderaspatana and subsequent conjugation of the silver nanoparticles to antibiotic ceftriaxone. The leaves of this plant are known to be a rich source of phenolic compounds with high antioxidant activity that are used as reducing agents. The size, morphology, crystallinity, composition of the synthesized silver nanoparticles and conjugation of ceftriaxone to silver nanoparticles were studied using analytical techniques. The activity of the conjugates against Bacillus subtilis (MTCC 1790), Klebsiella pneumoniae (MTCC 3384), Staphylococcus aureus (ATCC 25923), and Salmonella typhi (MTCC 3224) was compared to ceftriaxone and unconjugated nanoparticles using disc diffusion method. The effect of silver nanoparticles on the reduction of biofilms of Pseudomonas fluorescens (MTCC 6732) was determined by micro plate assay method. The antioxidant activities of extract, silver nitrate, silver nanoparticles, ceftriaxone and conjugates of nanoparticles were evaluated by radical scavenging 1, 1- diphenyl-2-picrylhydrazyl test. Ultraviolet visible spectroscopy and Fourier transform infrared spectroscopy confirmed the formation of metallic silver nanoparticles and conjugation to ceftriaxone. Atomic force microscopy, transmission electron microscopy and particle size analysis showed that the formed particles were of spherical morphology with appreciable nanosize and the conjugation was confirmed by slight increase in surface roughness. The results thus showed that the conjugation of ceftriaxone with silver nanoparticles has better antioxidant and antimicrobial effects than ceftriaxone and unconjugated nanoparticles. It can be suggested that M. maderaspatana mediated nanoparticle-ceftriaxone conjugate can be used effectively in the production of potential antioxidant and antimicrobial agents. The present study offers a significant overview to the development of novel antimicrobial nanoparticles.
Collapse
Affiliation(s)
- Muthukumar Harshiny
- Department of Chemical Engineering, National Institute of Technology, Tiruchirapalli 620015, India; CoRx Lifesciences And Pharmaceutical (CLAP) Private Limited, Tiruchirappalli 620020, India
| | - Manickam Matheswaran
- Department of Chemical Engineering, National Institute of Technology, Tiruchirapalli 620015, India
| | | | - Shanmugam Kumaran
- Department of Biotechnology, Periyar Maniammai University, Thanjavur 613403, India
| | | |
Collapse
|
38
|
Sathishkumar M, Pavagadhi S, Mahadevan A, Balasubramanian R. Biosynthesis of gold nanoparticles and related cytotoxicity evaluation using A549 cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 114:232-240. [PMID: 24835429 DOI: 10.1016/j.ecoenv.2014.03.020] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 03/16/2014] [Accepted: 03/18/2014] [Indexed: 06/03/2023]
Abstract
Biosynthesis of gold nanoparticles (AuNPs) has become an attractive area of research as it is environmentally benign. The toxicity of AuNPs synthesized by chemical routes has been widely studied. However, little is known about the toxicity associated with the biological synthesis of AuNPs. The present study was carried out to synthesize AuNPs using star anise (Illicium verum; a commercially available spice in abundance)and evaluate its toxicity using human epithelial lung cells (A549) in comparison with AuNPs synthesized by the traditional chemical methods (using sodium citrate and sodium borohydride). Apart from cell viability, markers of oxidative stress (reduced glutathione) and cell death (caspases) were also evaluated to understand the mechanisms of toxicity. Cell viability was observed to be 65.7 percent and 72.3 percent in cells exposed to chemically synthesized AuNPs at the highest dose (200nM) as compared to 80.2 percent for biologically synthesized AuNPs. Protective coating/capping of AuNPs by various polyphenolic compounds present in star anise extract appears to be a major contributor to lower toxicity observed in biologically synthesized AuNPs.
Collapse
Affiliation(s)
- M Sathishkumar
- Singapore-Delft Water Alliance, National University of Singapore, Singapore
| | - S Pavagadhi
- Singapore-Delft Water Alliance, National University of Singapore, Singapore; Department of Civil and Environmental Engineering, National University of Singapore
| | - A Mahadevan
- Singapore-Delft Water Alliance, National University of Singapore, Singapore; Department of Civil and Environmental Engineering, National University of Singapore
| | - R Balasubramanian
- Singapore-Delft Water Alliance, National University of Singapore, Singapore; Department of Civil and Environmental Engineering, National University of Singapore.
| |
Collapse
|
39
|
Patel D, James KT, O’Toole M, Zhang G, Keynton RS, Gobin AM. A high yield, one-pot dialysis-based process for self-assembly of near infrared absorbing gold nanoparticles. J Colloid Interface Sci 2015; 441:10-6. [DOI: 10.1016/j.jcis.2014.11.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 11/01/2014] [Accepted: 11/10/2014] [Indexed: 11/25/2022]
|
40
|
Kéri M, Peng C, Shi X, Bányai I. NMR Characterization of PAMAM_G5.NH2 Entrapped Atomic and Molecular Assemblies. J Phys Chem B 2015; 119:3312-9. [DOI: 10.1021/acs.jpcb.5b00272] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mónika Kéri
- Department
of Colloid and Environmental Chemistry, University of Debrecen, Debrecen, Hungary
| | | | | | - István Bányai
- Department
of Colloid and Environmental Chemistry, University of Debrecen, Debrecen, Hungary
| |
Collapse
|
41
|
Wong OA, Compel WS, Ackerson CJ. Combinatorial discovery of cosolvent systems for production of narrow dispersion thiolate-protected gold nanoparticles. ACS COMBINATORIAL SCIENCE 2015; 17:11-8. [PMID: 25459632 PMCID: PMC4294592 DOI: 10.1021/co500072c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
![]()
The effect of aqueous solvent concentration
in the synthesis of
water-soluble thiolate-protected gold nanoparticles (AuNPs) was investigated
for 13 water-miscible solvents and three thiolate ligands (p-mercaptobenzoic acid, thiomalic acid, and glutathione).
The results were analyzed by construction of heat maps that rank each
reaction result for polydispersity. When solvents were organized in
the heat map according to their Dimroth–Reichardt ET parameter (an approximate measure of polarity), two
“hot spots” become apparent that are independent of
the ligand used. We speculate that one hot spot may arise in part
from the metal chelation or coordination ability of solvents that
include diglyme, 1,2-dimethoxyethane, 1,4-dioxane, and tetrahydrofuran.
The second hot spot arises at concentrations of alcohols including
2-propanol and 1-butanol that appear to selectively precipitate a
growing product, presumably stopping its growth at a certain size.
We observe some tightly dispersed products that appear novel. Overall,
this study expands the number of tightly dispersed water-soluble AuNPs
that can be directly synthesized.
Collapse
Affiliation(s)
- O. Andrea Wong
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - W. Scott Compel
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Christopher J. Ackerson
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| |
Collapse
|
42
|
Goswami N, Zheng K, Xie J. Bio-NCs--the marriage of ultrasmall metal nanoclusters with biomolecules. NANOSCALE 2014; 6:13328-47. [PMID: 25266043 DOI: 10.1039/c4nr04561k] [Citation(s) in RCA: 139] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Ultrasmall metal nanoclusters (NCs) have attracted increasing attention due to their fascinating physicochemical properties. Today, functional metal NCs are finding growing acceptance in biomedical applications. To achieve a better performance in biomedical applications, metal NCs can be interfaced with biomolecules, such as proteins, peptides, and DNA, to form a new class of biomolecule-NC composites (or bio-NCs in short), which typically show synergistic or novel physicochemical and physiological properties. This feature article focuses on the recent studies emerging at the interface of metal NCs and biomolecules, where the interactions could impart unique physicochemical properties to the metal NCs, as well as mutually regulate biological functions of the bio-NCs. In this article, we first provide a broad overview of key concepts and developments in the novel biomolecule-directed synthesis of metal NCs. A special focus is placed on the key roles of biomolecules in metal NC synthesis. In the second part, we describe how the encapsulated metal NCs affect the structure and function of biomolecules. Followed by that, we discuss several unique synergistic effects observed in the bio-NCs, and illustrate them with examples highlighting their potential biomedical applications. Continued interdisciplinary efforts are required to build up in-depth knowledge about the interfacial chemistry and biology of bio-NCs, which could further pave their ways toward biomedical applications.
Collapse
Affiliation(s)
- Nirmal Goswami
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore.
| | | | | |
Collapse
|
43
|
Role of ligand type on the geometric and electronic properties of Ag–Au bimetallic clusters. COMPUT THEOR CHEM 2014. [DOI: 10.1016/j.comptc.2014.06.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
44
|
Weissker HC, Escobar HB, Thanthirige VD, Kwak K, Lee D, Ramakrishna G, Whetten RL, López-Lozano X. Information on quantum states pervades the visible spectrum of the ubiquitous Au144(SR)60 gold nanocluster. Nat Commun 2014; 5:3785. [DOI: 10.1038/ncomms4785] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 04/01/2014] [Indexed: 12/22/2022] Open
|
45
|
Malola S, Lehtovaara L, Häkkinen H. A DFT Study of Linear Gold-Thiolate Superclusters Absorbing in the Therapeutic NIR Window. J Phys Chem Lett 2014; 5:1329-1334. [PMID: 26269976 DOI: 10.1021/jz500449k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A series of linear clusters up to an aspect ratio of 1:6, formed as multimers of smaller clusters with an icosahedral Au13(5+) core having an eight-electron superatom configuration, are computationally predicted to have a greatly enhanced size-dependent absorption in the near-infrared (NIR) region extending to the biologically important NIR window. A novel structural model is presented for the previously isolated thiol-stabilized Au54(SR)30 cluster, where the metal core is formed as a heterodimer of the cores of the known Au25(SR)18(-/0) and Au38(SR)24 clusters.
Collapse
Affiliation(s)
- Sami Malola
- †Department of Physics, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
| | - Lauri Lehtovaara
- ‡Department of Chemistry, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
| | - Hannu Häkkinen
- †Department of Physics, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
- ‡Department of Chemistry, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
| |
Collapse
|
46
|
Alsharif SA, Chen LY, Tlahuice-Flores A, Whetten RL, Yacaman MJ. Interaction between functionalized gold nanoparticles in physiological saline. Phys Chem Chem Phys 2014; 16:3909-13. [PMID: 24441708 PMCID: PMC3947887 DOI: 10.1039/c3cp54503b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The interactions between functionalized noble-metal particles in an aqueous solution are central to applications relying on controlled equilibrium association. Herein, we obtain the potentials of mean force (PMF) for pair-interactions between functionalized gold nanoparticles (AuNPs) in physiological saline. These results are based upon >1000 ns experiments in silico of all-atom model systems under equilibrium and non-equilibrium conditions. Four types of functionalization are built by coating each globular Au144 cluster with 60 thiolate groups: GS-AuNP (glutathionate), PhS-AuNP (thiophenol), CyS-AuNP (cysteinyl), and p-APhS-AuNP (para-amino-thiophenol), which are, respectively, negatively charged, hydrophobic (neutral-nonpolar), hydrophilic (neutral-polar), and positively charged at neutral pH. The results confirm the behavior expected of neutral (hydrophilic or hydrophobic) particles in a dilute aqueous environment, however the PMF curves demonstrate that the charged AuNPs interact with one another in a unique way-mediated by H2O molecules and an electrolyte (Na(+), Cl(-))-in a physiological environment. In the case of two GS-AuNPs, the excess, neutralizing Na(+) ions form a mobile (or 'dynamic') cloud of enhanced concentration between the like-charged GS-AuNPs, inducing a moderate attraction (∼25 kT) between them. Furthermore, to a lesser degree, for a pair of p-APhS-AuNPs, the excess, neutralizing Cl(-) ions (less mobile than Na(+)) also form a cloud of higher concentration between the two like-charged p-APhS-AuNPs, inducing weaker yet significant attractions (∼12 kT). On combining one GS- with one p-APhS-AuNP, the direct, attractive Coulombic force is completely screened out while the solvation effects give rise to moderate repulsion between the two unlike-charged AuNPs.
Collapse
Affiliation(s)
- Shada A Alsharif
- Department of Physics and Astronomy, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA.
| | | | | | | | | |
Collapse
|
47
|
Abreu DDS, Paulo TDF, Temperini ML, Diógenes IC. Electrochemical, surface enhanced Raman scattering and surface plasmon resonance investigations on the coordination of cyanopyridine to ruthenium on surface. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.10.132] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
48
|
Beskorovaynyy AV, Kopitsyn DS, Novikov AA, Ziangirova M, Skorikova GS, Kotelev MS, Gushchin PA, Ivanov EV, Getmansky MD, Itzkan I, Muradov AV, Vinokurov VA, Perelman LT. Rapid optimization of metal nanoparticle surface modification with high-throughput gel electrophoresis. ACS NANO 2014; 8:1449-1456. [PMID: 24392839 DOI: 10.1021/nn405352v] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The ability to effectively control and optimize surface modification of metal nanoparticles is paramount to the ability to employ metal nanoparticles as diagnostic and therapeutic agents in biology and medicine. Here we present a high-throughput two-dimensional-grid gel electrophoresis cell (2D-GEC)-based method, capable of optimizing the surface modification of as many as 96 samples of metal nanoparticles in approximately 1 h. The 2D-GEC method determines not only the average zeta-potential of the modified particles but also the homogeneity of the surface modification by measuring the distance between the front of the sample track and the area where the maximum optical density is achieved. The method was tested for optimizing pH and concentration of the modifiers (pM) for functionalizing gold nanorod thiol-containing acidic agents.
Collapse
Affiliation(s)
- Alexander V Beskorovaynyy
- Center for Nanodiagnostics, Department of Physical and Colloid Chemistry, Gubkin Russian State University of Oil and Gas , Moscow, 119991, Russia
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Kothalawala N, West JL, Dass A. Size-dependent molecule-like to plasmonic transition in water-soluble glutathione stabilized gold nanomolecules. NANOSCALE 2014; 6:683-687. [PMID: 24270979 DOI: 10.1039/c3nr03657j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A size-dependent transition from molecule-like to plasmonic behaviour is demonstrated in the case of water soluble Au:SG nanomolecules. This was achieved using PAGE separation of smaller and larger nanomolecules, resulting in an unprecedented 26 bands, in a wide-range from 10's to 1000's of Au-atoms. PAGE separation of larger plasmonic nanomolecules is demonstrated for the first time. High resolution ESI-MS, with isotopic resolution, of smaller nanoparticles is reported, including the first time report of Au43(SG)26. This report will aid in the fundamental understanding of size-dependent properties of nanomolecules. The synthetic procedure employs a green approach with non-toxic chemicals and processes. The water solubility, non-toxicity and biocompatibility will lead to applications in biomedicine.
Collapse
Affiliation(s)
- Nuwan Kothalawala
- Department of Chemistry and Biochemistry, University of Mississippi, 352 Coulter Hall, University, 38677 Mississippi, USA.
| | | | | |
Collapse
|
50
|
Koivisto J, Salorinne K, Mustalahti S, Lahtinen T, Malola S, Häkkinen H, Pettersson M. Vibrational Perturbations and Ligand-Layer Coupling in a Single Crystal of Au144(SC2H4Ph)60 Nanocluster. J Phys Chem Lett 2014; 5:387-392. [PMID: 26270716 DOI: 10.1021/jz4026003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We have determined vibrational signatures and optical gap of the Au144(PET)60 (PET: phenylethylthiol, SC2H4Ph) nanocluster solvated in deuterated dichloromethane (DCM-D2, CD2Cl2) and in a single crystal. For crystals, solid-state (13)C NMR and X-ray diffraction were also measured. A revised value of 2200 cm(-1) (0.27 eV) was obtained for the optical gap in both phases. The vibrational spectra of solvated AU144(PET)60 closely resembles that of neat PET, while the crystalline-state spectrum exhibits significant inhomogeneous spectral broadening, frequency shifts, intensity transfer between vibrational modes, and an increase in the overtone and combination transition intensities. Spectral broadening was also observed in the (13)C NMR spectrum. Changes in the intensity are explained due to vibrational coupling of the normal modes induced by the crystal packing, and the vibrational broadening is caused by ligand-environment inhomogeneity in the crystal. This indicates a pseudocrystalline state where the cluster cores are arranged in periodic fashion, while the ligand-layer molecules between the cores form amorphous structures.
Collapse
Affiliation(s)
- Jaakko Koivisto
- †Department of Chemistry and ‡Department of Physics, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
| | - Kirsi Salorinne
- †Department of Chemistry and ‡Department of Physics, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
| | - Satu Mustalahti
- †Department of Chemistry and ‡Department of Physics, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
| | - Tanja Lahtinen
- †Department of Chemistry and ‡Department of Physics, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
| | - Sami Malola
- †Department of Chemistry and ‡Department of Physics, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
| | - Hannu Häkkinen
- †Department of Chemistry and ‡Department of Physics, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
| | - Mika Pettersson
- †Department of Chemistry and ‡Department of Physics, Nanoscience Center, University of Jyväskylä, FI-40014 Jyväskylä, Finland
| |
Collapse
|