151
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Logan N, Haughey SA, Liu L, Burns DT, Quinn B, Cao C, Elliott CT. Handheld SERS coupled with QuEChERs for the sensitive analysis of multiple pesticides in basmati rice. NPJ Sci Food 2022; 6:3. [PMID: 35027565 PMCID: PMC8758682 DOI: 10.1038/s41538-021-00117-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 12/06/2021] [Indexed: 12/03/2022] Open
Abstract
Pesticides are a safety issue globally and cause serious concerns for the environment, wildlife and human health. The handheld detection of four pesticide residues widely used in Basmati rice production using surface-enhanced Raman spectroscopy (SERS) is reported. Different SERS substrates were synthesised and their plasmonic and Raman scattering properties evaluated. Using this approach, detection limits for pesticide residues were achieved within the range of 5 ppb-75 ppb, in solvent. Various extraction techniques were assessed to recover pesticide residues from spiked Basmati rice. Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERs) acetate extraction was applied and characteristic spectral data for each pesticide was obtained from the spiked matrix and analysed using handheld-SERS. This approach allowed detection limits within the matrix conditions to be markedly improved, due to the rapid aggregation of nanogold caused by the extraction medium. Thus, detection limits for three out of four pesticides were detectable below the Maximum Residue Limits (MRLs) of 10 ppb in Basmati rice. Furthermore, the multiplexing performance of handheld-SERS was assessed in solvent and matrix conditions. This study highlights the great potential of handheld-SERS for the rapid on-site detection of pesticide residues in rice and other commodities.
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Affiliation(s)
- Natasha Logan
- ASSET Technology Centre, Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, UK.
| | - Simon A Haughey
- ASSET Technology Centre, Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, UK
| | - Lin Liu
- ASSET Technology Centre, Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, UK
| | - D Thorburn Burns
- ASSET Technology Centre, Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, UK
| | - Brian Quinn
- ASSET Technology Centre, Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, UK
| | - Cuong Cao
- ASSET Technology Centre, Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, UK
- Material and Advanced Technologies for Healthcare, Queen's University Belfast, 18-30 Malone Road, Belfast, BT9 5BN, UK
| | - Christopher T Elliott
- ASSET Technology Centre, Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, UK
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152
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Shigeta T, Takano S, Tsukuda T. A Face‐to‐Face Dimer of Au
3
Superatoms Supported by Interlocked Tridentate Scaffolds Formed in Au
18
S
2
(SR)
12. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Taro Shigeta
- Department of Chemistry Graduate School of Science The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 1130033 Japan
| | - Shinjiro Takano
- Department of Chemistry Graduate School of Science The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 1130033 Japan
| | - Tatsuya Tsukuda
- Department of Chemistry Graduate School of Science The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 1130033 Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB) Kyoto University 1-30 Goryo-Ohara, Nishikyo-ku Kyoto 6158245 Japan
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153
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Shao F, Zheng L, Lan J, Zenobi R. Nanoscale Chemical Imaging of Coadsorbed Thiolate Self-Assembled Monolayers on Au(111) by Tip-Enhanced Raman Spectroscopy. Anal Chem 2022; 94:1645-1653. [DOI: 10.1021/acs.analchem.1c03968] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Feng Shao
- Department of Physics and Astronomy, National Graphene Institute, University of Manchester, Manchester M13 9PL, U.K
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Liqing Zheng
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Jinggang Lan
- Department of Chemistry, University of Zurich, 8057 Zurich, Switzerland
| | - Renato Zenobi
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
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154
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File N, Carmicheal J, Krasnoslobodtsev AV, Japp NC, Souchek JJ, Chakravarty S, Hollingsworth MA, Sasson AA, Natarajan G, Kshirsagar PG, Jain M, Hayashi C, Junker WM, Kaur S, Batra SK. Substituent Effects Impact Surface Charge and Aggregation of Thiophenol-Labeled Gold Nanoparticles for SERS Biosensors. BIOSENSORS 2022; 12:25. [PMID: 35049653 PMCID: PMC8773556 DOI: 10.3390/bios12010025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/21/2021] [Accepted: 12/30/2021] [Indexed: 11/17/2022]
Abstract
SERS immunoassay biosensors hold immense potential for clinical diagnostics due to their high sensitivity and growing interest in multi-marker panels. However, their development has been hindered by difficulties in designing compatible extrinsic Raman labels. Prior studies have largely focused on spectroscopic characteristics in selecting Raman reporter molecules (RRMs) for multiplexing since the presence of well-differentiated spectra is essential for simultaneous detection. However, these candidates often induce aggregation of the gold nanoparticles used as SERS nanotags despite their similarity to other effective RRMs. Thus, an improved understanding of factors affecting the aggregation of RRM-coated gold nanoparticles is needed. Substituent electronic effects on particle stability were investigated using various para-substituted thiophenols. The inductive and resonant effects of functional group modifications were strongly correlated with nanoparticle surface charge and hence their stability. Treatment with thiophenols diminished the negative surface charge of citrate-stabilized gold nanoparticles, but electron-withdrawing substituents limited the magnitude of this diminishment. It is proposed that this phenomenon arises by affecting the interplay of competing sulfur binding modes. This has wide-reaching implications for the design of biosensors using thiol-modified gold surfaces. A proof-of-concept multiplexed SERS biosensor was designed according to these findings using the two thiophenol compounds with the most electron-withdrawing substitutions: NO2 and CN.
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Affiliation(s)
- Nolan File
- Sanguine Diagnostics and Therapeutics Inc., Omaha, NE 68106, USA; (N.F.); (N.C.J.); (J.J.S.); (M.A.H.); (A.A.S.); (W.M.J.)
- School of Chemistry, University of Edinburgh, Edinburgh EH8 9YL, UK
| | - Joseph Carmicheal
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA; (J.C.); (S.C.); (G.N.); (P.G.K.); (M.J.); (C.H.)
| | | | - Nicole C. Japp
- Sanguine Diagnostics and Therapeutics Inc., Omaha, NE 68106, USA; (N.F.); (N.C.J.); (J.J.S.); (M.A.H.); (A.A.S.); (W.M.J.)
| | - Joshua J. Souchek
- Sanguine Diagnostics and Therapeutics Inc., Omaha, NE 68106, USA; (N.F.); (N.C.J.); (J.J.S.); (M.A.H.); (A.A.S.); (W.M.J.)
| | - Sudesna Chakravarty
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA; (J.C.); (S.C.); (G.N.); (P.G.K.); (M.J.); (C.H.)
| | - Michael A. Hollingsworth
- Sanguine Diagnostics and Therapeutics Inc., Omaha, NE 68106, USA; (N.F.); (N.C.J.); (J.J.S.); (M.A.H.); (A.A.S.); (W.M.J.)
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA; (J.C.); (S.C.); (G.N.); (P.G.K.); (M.J.); (C.H.)
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Aaron A. Sasson
- Sanguine Diagnostics and Therapeutics Inc., Omaha, NE 68106, USA; (N.F.); (N.C.J.); (J.J.S.); (M.A.H.); (A.A.S.); (W.M.J.)
- Department of Surgery, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY 11794, USA
| | - Gopalakrishnan Natarajan
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA; (J.C.); (S.C.); (G.N.); (P.G.K.); (M.J.); (C.H.)
| | - Prakash G. Kshirsagar
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA; (J.C.); (S.C.); (G.N.); (P.G.K.); (M.J.); (C.H.)
| | - Maneesh Jain
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA; (J.C.); (S.C.); (G.N.); (P.G.K.); (M.J.); (C.H.)
- Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Chihiro Hayashi
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA; (J.C.); (S.C.); (G.N.); (P.G.K.); (M.J.); (C.H.)
| | - Wade M. Junker
- Sanguine Diagnostics and Therapeutics Inc., Omaha, NE 68106, USA; (N.F.); (N.C.J.); (J.J.S.); (M.A.H.); (A.A.S.); (W.M.J.)
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA; (J.C.); (S.C.); (G.N.); (P.G.K.); (M.J.); (C.H.)
| | - Sukhwinder Kaur
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA; (J.C.); (S.C.); (G.N.); (P.G.K.); (M.J.); (C.H.)
| | - Surinder K. Batra
- Sanguine Diagnostics and Therapeutics Inc., Omaha, NE 68106, USA; (N.F.); (N.C.J.); (J.J.S.); (M.A.H.); (A.A.S.); (W.M.J.)
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA; (J.C.); (S.C.); (G.N.); (P.G.K.); (M.J.); (C.H.)
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, USA
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155
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Huang Y, Cohen TA, Sperry BM, Larson H, Nguyen HA, Homer MK, Dou FY, Jacoby LM, Cossairt BM, Gamelin DR, Luscombe CK. Organic building blocks at inorganic nanomaterial interfaces. MATERIALS HORIZONS 2022; 9:61-87. [PMID: 34851347 DOI: 10.1039/d1mh01294k] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This tutorial review presents our perspective on designing organic molecules for the functionalization of inorganic nanomaterial surfaces, through the model of an "anchor-functionality" paradigm. This "anchor-functionality" paradigm is a streamlined design strategy developed from a comprehensive range of materials (e.g., lead halide perovskites, II-VI semiconductors, III-V semiconductors, metal oxides, diamonds, carbon dots, silicon, etc.) and applications (e.g., light-emitting diodes, photovoltaics, lasers, photonic cavities, photocatalysis, fluorescence imaging, photo dynamic therapy, drug delivery, etc.). The structure of this organic interface modifier comprises two key components: anchor groups binding to inorganic surfaces and functional groups that optimize their performance in specific applications. To help readers better understand and utilize this approach, the roles of different anchor groups and different functional groups are discussed and explained through their interactions with inorganic materials and external environments.
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Affiliation(s)
- Yunping Huang
- Department of Materials Science & Engineering, University of Washington, Seattle, WA 98195, USA.
| | - Theodore A Cohen
- Molecular Engineering & Sciences Institute, University of Washington, Seattle, WA 98195, USA
| | - Breena M Sperry
- Department of Materials Science & Engineering, University of Washington, Seattle, WA 98195, USA.
| | - Helen Larson
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
| | - Hao A Nguyen
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
| | - Micaela K Homer
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
| | - Florence Y Dou
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
| | - Laura M Jacoby
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
| | - Brandi M Cossairt
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
| | - Daniel R Gamelin
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
| | - Christine K Luscombe
- Department of Materials Science & Engineering, University of Washington, Seattle, WA 98195, USA.
- Molecular Engineering & Sciences Institute, University of Washington, Seattle, WA 98195, USA
- Department of Chemistry, University of Washington, Seattle, WA 98195, USA
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156
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Naher M, Gorenskaia E, Moggach SA, Becker T, Nichols RJ, Lambert CJ, Low PJ. A one-pot synthesis of oligo(arylene–ethynylene)-molecular wires and their use in the further verification of molecular circuit laws†. Aust J Chem 2022. [DOI: 10.1071/ch21235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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157
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Muñoz-Castro A. Ligand-Core Interaction in Ligand-Protected Ag25(XR)18 (X= S, Se, Te) Superatoms. Evaluation of Anchor Atom Role via Relativistic DFT Calculations. Phys Chem Chem Phys 2022; 24:17233-17241. [DOI: 10.1039/d2cp01058e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The isostructural and isoelectronic silver [Ag25(SR)18]- (R=Ligand) cluster to [Au25(SR)18]- gold clusters allows to further understand the fundamental similarities between Au and Ag, at the ultrasmall nanoscale (< 2 nm)...
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158
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Tandiana R, Sicard-Roselli C, Van-Oanh NT, Steinmann S, Clavaguéra C. In-depth theoretical understanding of the chemical interaction of aromatic compounds with a gold nanoparticle. Phys Chem Chem Phys 2022; 24:25327-25336. [DOI: 10.1039/d2cp02654f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
The orientations of aromatic molecules at the surface of gold nanoparticles are probed and characterized by a combination of several topological analyses, energy decomposition analyses, and infrared spectroscopy.
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Affiliation(s)
- Rika Tandiana
- Institut de Chimie Physique, Université Paris-Saclay – CNRS, UMR 8000, 91405 Orsay, France
| | - Cécile Sicard-Roselli
- Institut de Chimie Physique, Université Paris-Saclay – CNRS, UMR 8000, 91405 Orsay, France
| | - Nguyen-Thi Van-Oanh
- Institut de Chimie Physique, Université Paris-Saclay – CNRS, UMR 8000, 91405 Orsay, France
| | | | - Carine Clavaguéra
- Institut de Chimie Physique, Université Paris-Saclay – CNRS, UMR 8000, 91405 Orsay, France
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159
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Andreiuk B, Nicolson F, Clark LM, Panikkanvalappil SR, Kenry, Rashidian M, Harmsen S, Kircher MF. Design and synthesis of gold nanostars-based SERS nanotags for bioimaging applications. Nanotheranostics 2022; 6:10-30. [PMID: 34976578 PMCID: PMC8671966 DOI: 10.7150/ntno.61244] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Accepted: 05/10/2021] [Indexed: 12/17/2022] Open
Abstract
Surface-enhanced Raman spectroscopy (SERS) nanotags hold a unique place among bioimaging contrast agents due to their fingerprint-like spectra, which provide one of the highest degrees of detection specificity. However, in order to achieve a sufficiently high signal intensity, targeting capabilities, and biocompatibility, all components of nanotags must be rationally designed and tailored to a specific application. Design parameters include fine-tuning the properties of the plasmonic core as well as optimizing the choice of Raman reporter molecule, surface coating, and targeting moieties for the intended application. This review introduces readers to the principles of SERS nanotag design and discusses both established and emerging protocols of their synthesis, with a specific focus on the construction of SERS nanotags in the context of bioimaging and theranostics.
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Affiliation(s)
- Bohdan Andreiuk
- Department of Imaging, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
| | - Fay Nicolson
- Department of Imaging, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
| | - Louise M. Clark
- Department of Imaging, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
| | | | - Kenry
- Department of Imaging, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Mohammad Rashidian
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
| | - Stefan Harmsen
- Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Moritz F. Kircher
- Department of Imaging, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
- Department of Radiology, Brigham & Women's Hospital and Harvard Medical School, Boston, MA 022115, USA
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160
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Al-Otaibi JS, Mary YS, Mary YS, Ullah Z, Kwon HW. Adsorption behavior and solvent effects of an adamantane-triazole derivative on metal clusters – DFT simulation studies. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118242] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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161
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Lin X, Shi J, Shi Z, Niwayama S. Hydrophobic and antifouling modification of graphene oxide with functionalized polynorbornene by surface-initiated ring-opening metathesis polymerization. NEW J CHEM 2022. [DOI: 10.1039/d1nj05935a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Surface-initiated ring-opening metathesis polymerization (SI-ROMP), based on the design of hydrophobic and antifouling monomers, was employed for the synthesis of grafting-modified graphene oxide (GO).
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Affiliation(s)
- Xiaoxue Lin
- Key Laboratory of Water Pollution Treatment & Resource Reuse, Hainan Normal University, Haikou, Hainan 571158, P. R. China
- College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan 571158, P. R. China
| | - Jianjun Shi
- College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan 571158, P. R. China
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1, Mizumoto-cho, Muroran, Hokkaido, 050-8585, Japan
| | - Zaifeng Shi
- Key Laboratory of Water Pollution Treatment & Resource Reuse, Hainan Normal University, Haikou, Hainan 571158, P. R. China
- College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan 571158, P. R. China
| | - Satomi Niwayama
- Division of Sustainable and Environmental Engineering, Graduate School of Engineering, Muroran Institute of Technology, 27-1, Mizumoto-cho, Muroran, Hokkaido, 050-8585, Japan
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162
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Jiang Y, Jiang Z, Wang M, Ma L. Current understandings and clinical translation of nanomedicines for breast cancer therapy. Adv Drug Deliv Rev 2022; 180:114034. [PMID: 34736986 DOI: 10.1016/j.addr.2021.114034] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 10/20/2021] [Accepted: 10/28/2021] [Indexed: 02/08/2023]
Abstract
Breast cancer is one of the most frequently diagnosed cancers that is threatening women's life. Current clinical treatment regimens for breast cancer often involve neoadjuvant and adjuvant systemic therapies, which somewhat are associated with unfavorable features. Also, the heterogeneous nature of breast cancers requires precision medicine that cannot be fulfilled by a single type of systemically administered drug. Taking advantage of the nanocarriers, nanomedicines emerge as promising therapeutic agents for breast cancer that could resolve the defects of drugs and achieve precise drug delivery to almost all sites of primary and metastatic breast tumors (e.g. tumor vasculature, tumor stroma components, breast cancer cells, and some immune cells). Seven nanomedicines as represented by Doxil® have been approved for breast cancer clinical treatment so far. More nanomedicines including both non-targeting and active targeting nanomedicines are being evaluated in the clinical trials. However, we have to realize that the translation of nanomedicines, particularly the active targeting nanomedicines is not as successful as people have expected. This review provides a comprehensive landscape of the nanomedicines for breast cancer treatment, from laboratory investigations to clinical applications. We also highlight the key advances in the understanding of the biological fate and the targeting strategies of breast cancer nanomedicine and the implications to clinical translation.
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163
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Piper A, Corrigan DK, Mount AR. An electrochemical comparison of thiolated self‐assembled monolayer (SAM) formation and stability in solution on macro‐ and nanoelectrodes. ELECTROCHEMICAL SCIENCE ADVANCES 2021. [DOI: 10.1002/elsa.202100077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Andrew Piper
- EaStCHEM, School of Chemistry The University of Edinburgh Edinburgh UK
| | - Damion K. Corrigan
- Department of Biomedical Engineering University of Strathclyde Glasgow UK
| | - Andrew R. Mount
- EaStCHEM, School of Chemistry The University of Edinburgh Edinburgh UK
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164
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Mohd Asri MA, Nordin AN, Ramli N. Low-cost and cleanroom-free prototyping of microfluidic and electrochemical biosensors: Techniques in fabrication and bioconjugation. BIOMICROFLUIDICS 2021; 15:061502. [PMID: 34777677 PMCID: PMC8577868 DOI: 10.1063/5.0071176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 10/22/2021] [Indexed: 05/18/2023]
Abstract
Integrated microfluidic biosensors enable powerful microscale analyses in biology, physics, and chemistry. However, conventional methods for fabrication of biosensors are dependent on cleanroom-based approaches requiring facilities that are expensive and are limited in access. This is especially prohibitive toward researchers in low- and middle-income countries. In this topical review, we introduce a selection of state-of-the-art, low-cost prototyping approaches of microfluidics devices and miniature sensor electronics for the fabrication of sensor devices, with focus on electrochemical biosensors. Approaches explored include xurography, cleanroom-free soft lithography, paper analytical devices, screen-printing, inkjet printing, and direct ink writing. Also reviewed are selected surface modification strategies for bio-conjugates, as well as examples of applications of low-cost microfabrication in biosensors. We also highlight several factors for consideration when selecting microfabrication methods appropriate for a project. Finally, we share our outlook on the impact of these low-cost prototyping strategies on research and development. Our goal for this review is to provide a starting point for researchers seeking to explore microfluidics and biosensors with lower entry barriers and smaller starting investment, especially ones from low resource settings.
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Affiliation(s)
- Mohd Afiq Mohd Asri
- Department of Electrical and Computer Engineering, Kulliyyah of Engineering, International Islamic University Malaysia, 53100 Gombak, Selangor, Malaysia
| | - Anis Nurashikin Nordin
- Department of Electrical and Computer Engineering, Kulliyyah of Engineering, International Islamic University Malaysia, 53100 Gombak, Selangor, Malaysia
- Author to whom correspondence should be addressed:
| | - Nabilah Ramli
- Department of Mechanical Engineering, Kulliyyah of Engineering, International Islamic University Malaysia, 53100 Gombak, Selangor, Malaysia
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165
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Carlson S, Becker M, Brünig FN, Ataka K, Cruz R, Yu L, Tang P, Kanduč M, Haag R, Heberle J, Makki H, Netz RR. Hydrophobicity of Self-Assembled Monolayers of Alkanes: Fluorination, Density, Roughness, and Lennard-Jones Cutoffs. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:13846-13858. [PMID: 34787431 DOI: 10.1021/acs.langmuir.1c02187] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The interplay of fluorination and structure of alkane self-assembled monolayers and how these affect hydrophobicity are explored via molecular dynamics simulations, contact angle goniometry, and surface-enhanced infrared absorption spectroscopy. Wetting coefficients are found to grow linearly in the monolayer density for both alkane and perfluoroalkane monolayers. The larger contact angles of monolayers of perfluorinated alkanes are shown to be primarily caused by their larger molecular volume, which leads to a larger nearest-neighbor grafting distance and smaller tilt angle. Increasing the Lennard-Jones force cutoff in simulations is found to increase hydrophilicity. Specifically, wetting coefficients scale like the inverse square of the cutoff, and when extrapolated to the infinite cutoff limit, they yield contact angles that compare favorably to experimental values. Nanoscale roughness is also found to reliably increase monolayer hydrophobicity, mostly via the reduction of the entropic part of the work of adhesion. Analysis of depletion lengths shows that droplets on nanorough surfaces partially penetrate the surface, intermediate between Wenzel and Cassie-Baxter states.
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Affiliation(s)
- Shane Carlson
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Maximilian Becker
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Florian N Brünig
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Kenichi Ataka
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Rubén Cruz
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Leixiao Yu
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany
| | - Peng Tang
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany
| | - Matej Kanduč
- Department of Theoretical Physics, Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia
| | - Rainer Haag
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany
| | - Joachim Heberle
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Hesam Makki
- Polymer and Color Engineering, Amirkabir University of Technology, 424 Hafez Ave, Tehran 15875-4413, Iran
| | - Roland R Netz
- Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
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166
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Kim HI, Raja N, Choi Y, Kim J, Sung A, Choi YJ, Yun HS, Park H. Selective Detection of an Infection Biomarker by an Osteo-Friend Scaffold: Development of a Multifunctional Artificial Bone Substitute. BIOSENSORS 2021; 11:473. [PMID: 34940230 PMCID: PMC8699388 DOI: 10.3390/bios11120473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/08/2021] [Accepted: 11/22/2021] [Indexed: 11/17/2022]
Abstract
Developments in three-dimensional (3D) printing technologies have led to many potential applications in various biomedical fields, especially artificial bone substitutes (ABSs). However, due to the characteristics of artificial materials, biocompatibility and infection remain issues. Here, multifunctional ABSs have been designed to overcome these issues by the inclusion of a biochemical modality that allows simultaneous detection of an infection biomarker by osteo-friend 3D scaffolds. The developed multifunctional scaffolds consist of calcium-deficient hydroxyapatite (CDHA), which has a similar geometric structure and chemical composition to human bone, and gold nanoparticles (Au NPs), which assists osteogenesis and modulates the fluorescence of labels in their microenvironment. The Au NPs were subsequently conjugated with fluorescent dye-labeled probe DNA, which allowed selective interaction with a specific target biomarker, and the fluorescent signal of the dye was temporally quenched by the Au NP-derived Förster resonance energy transfer (FRET). When the probe DNA unfolded to bind to the target biomarker, the fluorescence signal was recovered due to the increased distance between the dye and Au NPs. To demonstrate this sensing mechanism, a microbial oligonucleotide was selected as a target biomarker. Consequently, the multifunctional scaffold simultaneously facilitated osteogenic proliferation and the detection of the infection biomarker.
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Affiliation(s)
- Hye-In Kim
- Department of Advanced Biomaterials Research, Ceramics Materials Division, Korea Institute of Materials Science (KIMS), 797 Changwon-daero, Seongsan-gu, Changwon 51508, Korea; (H.-I.K.); (N.R.); (Y.C.); (J.K.); (A.S.); (Y.-J.C.); (H.-s.Y.)
| | - Naren Raja
- Department of Advanced Biomaterials Research, Ceramics Materials Division, Korea Institute of Materials Science (KIMS), 797 Changwon-daero, Seongsan-gu, Changwon 51508, Korea; (H.-I.K.); (N.R.); (Y.C.); (J.K.); (A.S.); (Y.-J.C.); (H.-s.Y.)
| | - Youngjun Choi
- Department of Advanced Biomaterials Research, Ceramics Materials Division, Korea Institute of Materials Science (KIMS), 797 Changwon-daero, Seongsan-gu, Changwon 51508, Korea; (H.-I.K.); (N.R.); (Y.C.); (J.K.); (A.S.); (Y.-J.C.); (H.-s.Y.)
| | - Jueun Kim
- Department of Advanced Biomaterials Research, Ceramics Materials Division, Korea Institute of Materials Science (KIMS), 797 Changwon-daero, Seongsan-gu, Changwon 51508, Korea; (H.-I.K.); (N.R.); (Y.C.); (J.K.); (A.S.); (Y.-J.C.); (H.-s.Y.)
- Department of Advanced Materials Engineering, Korea University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Korea
| | - Aram Sung
- Department of Advanced Biomaterials Research, Ceramics Materials Division, Korea Institute of Materials Science (KIMS), 797 Changwon-daero, Seongsan-gu, Changwon 51508, Korea; (H.-I.K.); (N.R.); (Y.C.); (J.K.); (A.S.); (Y.-J.C.); (H.-s.Y.)
| | - Yeong-Jin Choi
- Department of Advanced Biomaterials Research, Ceramics Materials Division, Korea Institute of Materials Science (KIMS), 797 Changwon-daero, Seongsan-gu, Changwon 51508, Korea; (H.-I.K.); (N.R.); (Y.C.); (J.K.); (A.S.); (Y.-J.C.); (H.-s.Y.)
| | - Hui-suk Yun
- Department of Advanced Biomaterials Research, Ceramics Materials Division, Korea Institute of Materials Science (KIMS), 797 Changwon-daero, Seongsan-gu, Changwon 51508, Korea; (H.-I.K.); (N.R.); (Y.C.); (J.K.); (A.S.); (Y.-J.C.); (H.-s.Y.)
- Department of Advanced Materials Engineering, Korea University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Korea
| | - Honghyun Park
- Department of Advanced Biomaterials Research, Ceramics Materials Division, Korea Institute of Materials Science (KIMS), 797 Changwon-daero, Seongsan-gu, Changwon 51508, Korea; (H.-I.K.); (N.R.); (Y.C.); (J.K.); (A.S.); (Y.-J.C.); (H.-s.Y.)
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167
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Griffiths J, Földes T, de Nijs B, Chikkaraddy R, Wright D, Deacon WM, Berta D, Readman C, Grys DB, Rosta E, Baumberg JJ. Resolving sub-angstrom ambient motion through reconstruction from vibrational spectra. Nat Commun 2021; 12:6759. [PMID: 34799553 PMCID: PMC8604935 DOI: 10.1038/s41467-021-26898-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 10/27/2021] [Indexed: 11/09/2022] Open
Abstract
Metal/organic-molecule interactions underpin many key chemistries but occur on sub-nm scales where nanoscale visualisation techniques tend to average over heterogeneous distributions. Single molecule imaging techniques at the atomic scale have found it challenging to track chemical behaviour under ambient conditions. Surface-enhanced Raman spectroscopy can optically monitor the vibrations of single molecules but understanding is limited by the complexity of spectra and mismatch between theory and experiment. We demonstrate that spectra from an optically generated metallic adatom near a molecule of interest can be inverted into dynamic sub-Å metal-molecule interactions using a comprehensive model, revealing anomalous diffusion of a single atom. Transient metal-organic coordination bonds chemically perturb molecular functional groups > 10 bonds away. With continuous improvements in computational methods for modelling large and complex molecular systems, this technique will become increasingly applicable to accurately tracking more complex chemistries.
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Affiliation(s)
- Jack Griffiths
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Tamás Földes
- Department of Chemistry, King's College London, 7 Trinity Street, London, SE1 1DB, UK.,Department of Physics and Astronomy, University College London, London, WC1E 6BT, UK
| | - Bart de Nijs
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge, CB3 0HE, UK.
| | - Rohit Chikkaraddy
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Demelza Wright
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge, CB3 0HE, UK
| | - William M Deacon
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Dénes Berta
- Department of Chemistry, King's College London, 7 Trinity Street, London, SE1 1DB, UK.,Department of Physics and Astronomy, University College London, London, WC1E 6BT, UK
| | - Charlie Readman
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge, CB3 0HE, UK
| | - David-Benjamin Grys
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Edina Rosta
- Department of Chemistry, King's College London, 7 Trinity Street, London, SE1 1DB, UK.,Department of Physics and Astronomy, University College London, London, WC1E 6BT, UK
| | - Jeremy J Baumberg
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge, CB3 0HE, UK.
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168
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Allen AC, Efrem M, Mahalingam U, Guarino-Hotz M, Foley AR, Raskatov JA, Song C, Lindley SA, Li J, Chen B, Zhang JZ. Hollow Gold Nanosphere Templated Synthesis of PEGylated Hollow Gold Nanostars and Use for SERS Detection of Amyloid Beta in Solution. J Phys Chem B 2021; 125:12344-12352. [PMID: 34726922 DOI: 10.1021/acs.jpcb.1c06776] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Hollow gold nanospheres (HGNs) have been used as the template for seed-mediated growth of multibranched hollow gold nanostars (HNS). The HGNs were synthesized via anerobic reduction of cobalt chloride to cobalt nanoparticles and then formation of a gold shell via galvanic replacement followed by the oxidation of the cobalt core. We obtained control of the inner core size of the HGNs by increasing the size of the sacrificial cobalt core and by varying the ratio of B(OH)3/BH4 using boric acid rather than 48 h aged borohydride. We synthesized the HNS by reducing Au3+ ions in the presence of Ag+ ions using ascorbic acid, creating a spiky morphology that varied with the Au3+/Ag+ ratio. A broadly tunable localized surface plasmon resonance was achieved through control of both the inner core and the spike length. Amyloid beta (Aβ) was conjugated to the HNS by using a heterobifunctional PEG linker and identified by the vibrational modes associated with the conjugated ring phenylalanine side chain. A bicinchoninic acid assay was used to determine the concentration of Aβ conjugated to HNS as 20 nM, which is below the level of Aβ that negatively affects long-term potentiation. Both the core size and spike length were shown to affect the optical properties of the resulting nanostructures. This HGN templated method introduced a new parameter for enhancing the plasmonic properties of gold nanostars, namely, the addition of a hollow core. Hollow gold nanostars are highly desirable for a wide range of applications, including high sensitivity disease detection and monitoring.
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Affiliation(s)
- A'Lester C Allen
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, Santa Cruz, California 95064, United States
| | - Mekedlawit Efrem
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, Santa Cruz, California 95064, United States
| | - Umadevi Mahalingam
- Department of Physics, Mother Teresa Women's University, Kodaikanal 624 101, Tamil Nadu, India
| | - Melissa Guarino-Hotz
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, Santa Cruz, California 95064, United States
| | - Alejandro R Foley
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, Santa Cruz, California 95064, United States
| | - Jevgenij A Raskatov
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, Santa Cruz, California 95064, United States
| | - Chengyu Song
- National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Sarah A Lindley
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, Santa Cruz, California 95064, United States
| | - Jing Li
- NASA Ames Research Center, Moffett Field, California 94035, United States
| | - Bin Chen
- NASA Ames Research Center, Moffett Field, California 94035, United States
| | - Jin Z Zhang
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, Santa Cruz, California 95064, United States
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169
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Shigeta T, Takano S, Tsukuda T. A Face-to-Face Dimer of Au 3 Superatoms Supported by Interlocked Tridentate Scaffolds Formed in Au 18 S 2 (SR) 12. Angew Chem Int Ed Engl 2021; 61:e202113275. [PMID: 34752676 DOI: 10.1002/anie.202113275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Indexed: 11/08/2022]
Abstract
A new sulfur-containing gold cluster, Au18 S2 (STipb)12 , was serendipitously obtained using the bulky thiol, 2,4,6-triisopropylbenzyl mercaptan (TipbSH), as protecting ligands. Single-crystal X-ray diffraction analysis revealed that Au18 S2 (STipb)12 has a deformed octahedral Au6 core clutched by two tridentate S[Au2 (STipb)2 ]3 units in an interlocked manner. Based on density functional theory calculations, we propose that the Au6 core with two electrons is better viewed as a face-to-face dimer of Au3 (1e) superatoms rather than an electronically closed Au6 (2e) superatom. In situ formation of the sulfide anions (S2- ) via C-S bond breakage is ascribed to the steric repulsion between the TipbS ligands.
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Affiliation(s)
- Taro Shigeta
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 1130033, Japan
| | - Shinjiro Takano
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 1130033, Japan
| | - Tatsuya Tsukuda
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 1130033, Japan.,Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto, 6158245, Japan
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170
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Eisen C, Chin JM, Reithofer MR. Catalytically Active Gold Nanomaterials Stabilized by N-heterocyclic Carbenes. Chem Asian J 2021; 16:3026-3037. [PMID: 34399027 PMCID: PMC8597167 DOI: 10.1002/asia.202100731] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/12/2021] [Indexed: 12/04/2022]
Abstract
Solid supported or ligand capped gold nanomaterials (AuNMs) emerged as versatile and recyclable heterogeneous catalysts for a broad variety of conversions in the ongoing catalytic 'gold rush'. Existing at the border of homogeneous and heterogeneous catalysis, AuNMs offer the potential to merge high catalytic activity with significant substrate selectivity. Owing to their strong binding towards the surface atoms of AuMNs, NHCs offer tunable activation of surface atoms while maintaining selectivity and stability of the NM even under challenging conditions. This work summarizes well-defined catalytically active NHC capped AuNMs including spherical nanoparticles and atom-precise nanoclusters as well as the important NHC design choices towards activity and (stereo-)selectivity enhancements.
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Affiliation(s)
- Constantin Eisen
- Department of Inorganic ChemistryFaculty of ChemistryUniversity of ViennaWähringer Straße 421090ViennaAustria
| | - Jia Min Chin
- Department of Physical ChemistryFaculty of ChemistryUniversity of ViennaWähringer Straße 421090ViennaAustria
| | - Michael R. Reithofer
- Department of Inorganic ChemistryFaculty of ChemistryUniversity of ViennaWähringer Straße 421090ViennaAustria
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171
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Anik MI, Mahmud N, Al Masud A, Hasan M. Gold nanoparticles (GNPs) in biomedical and clinical applications: A review. NANO SELECT 2021. [DOI: 10.1002/nano.202100255] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Muzahidul I. Anik
- Department of Chemical Engineering University of Rhode Island South Kingstown Rhode Island USA
| | - Niaz Mahmud
- Department of Biomedical Engineering Military Institute of Science and Technology Dhaka Bangladesh
| | - Abdullah Al Masud
- Department of Chemical Engineering Bangladesh University of Engineering and Technology Dhaka Bangladesh
| | - Maruf Hasan
- Department of Biomedical Engineering Military Institute of Science and Technology Dhaka Bangladesh
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172
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Skipper HE, May CV, Rheingold AL, Doerrer LH, Kamenetska M. Hard-Soft Chemistry Design Principles for Predictive Assembly of Single Molecule-Metal Junctions. J Am Chem Soc 2021; 143:16439-16447. [PMID: 34582679 DOI: 10.1021/jacs.1c05142] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The achievement of atomic control over the organic-inorganic interface is key to engineering electronic and spintronic properties of molecular devices. We leverage insights from inorganic chemistry to create hard-soft acid-base (HSAB) theory-derived design principles for incorporation of single molecules onto metal electrodes. A single molecule circuit is assembled via a bond between an organic backbone and an under-coordinated metal atom of the electrode surface, typically Au. Here, we study molecular composition factors affecting the junction assembly of coordination complexes containing transition metals atoms on Au electrodes. We employ hetero- and homobimetallic lantern complexes and systematically change the coordination environment to vary the character of the intramolecular bonds relative to the electrode-molecule interaction. We observe that trends in the robustness and chemical selectivity of single molecule junctions formed with a range of linkers correlate with HSAB principles, which have traditionally been used to guide atomic arrangements in the synthesis of coordination complexes. We find that this similarity between the intermolecular electrode-molecule bonding in a molecular circuit and the intramolecular bonds within a coordination complex has implications for the design of metal-containing complexes compatible with electrical measurements on metal electrodes. Our results here show that HSAB principles determine which intramolecular interactions can be compromised by inter molecule-electrode coordination; in particular on Au electrodes, soft-soft metal-ligand bonding is vulnerable to competition from soft-soft Au-linker bonding in the junction. Neutral donor-acceptor intramolecular bonds can be tuned by the Lewis acidity of the transition metal ion, suggesting future synthetic routes toward incorporation of transition metal atoms into molecular junctions for increased functionality of single molecule devices.
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Affiliation(s)
- Hannah E Skipper
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Claire V May
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Arnold L Rheingold
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0332, La Jolla, California 92093, United States
| | - Linda H Doerrer
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States.,Division of Material Science and Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Maria Kamenetska
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States.,Division of Material Science and Engineering, Boston University, Boston, Massachusetts 02215, United States.,Department of Physics, Boston University, Boston, Massachusetts 02215, United States
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173
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Wang S, Huang JK, Li M, Azam A, Zu X, Qiao L, Yang J, Li S. Growth of High-Quality Monolayer Transition Metal Dichalcogenide Nanocrystals by Chemical Vapor Deposition and Their Photoluminescence and Electrocatalytic Properties. ACS APPLIED MATERIALS & INTERFACES 2021; 13:47962-47971. [PMID: 34591469 DOI: 10.1021/acsami.1c14136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Two-dimensional transition metal dichalcogenide (TMDC) nanocrystals (NCs) exhibit unique optical and electrocatalytic properties. However, the growth of uniform and high-quality NCs of monolayer TMDC remains a challenge. Until now, most of them are synthesized via a solution-based hydrothermal process or ultrasonic exfoliation method, in which the capping ligands introduced from organic solution often quench the optical and electrocatalytic properties of TMDC NCs. Moreover, it is difficult to homogeneously disperse the solution-based TMDC NCs on a substrate for device fabrication, since the dispersed NCs can easily aggregate. Here, we put forward a novel CVD method to grow closely spaced MoS2 NCs around 5 nm in lateral size. TEM and AFM characterizations demonstrate the monolayer and high-crystalline nature of MoS2 NCs. An obvious blue-shift with 130 meV in photoluminescence signals can be observed. The MoS2 NCs also show an outstanding surface-enhanced Raman scattering for organic molecules due to their localized surface plasmon and abundant edge sites and exhibit excellent electrocatalytic properties for the hydrogen-evolution reaction with a very low onset potential of ∼50 mV and Tafel slope of ∼57 mV/decade. Finally, we further demonstrate this kind of CVD method as a versatile platform for the growth of other TMDC NCs, such as WSe2 and MoSe2 NCs.
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Affiliation(s)
- Shuangyue Wang
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Jing-Kai Huang
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Mengyao Li
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Ashraful Azam
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Xiaotao Zu
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, PR China
| | - Liang Qiao
- School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, PR China
| | - Jack Yang
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Sean Li
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
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174
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Khanna SN, Reber AC, Bista D, Sengupta T, Lambert R. The superatomic state beyond conventional magic numbers: Ligated metal chalcogenide superatoms. J Chem Phys 2021; 155:120901. [PMID: 34598575 DOI: 10.1063/5.0062582] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The field of cluster science is drawing increasing attention due to the strong size and composition-dependent properties of clusters and the exciting prospect of clusters serving as the building blocks for materials with tailored properties. However, identifying a unifying central paradigm that provides a framework for classifying and understanding the diverse behaviors is an outstanding challenge. One such central paradigm is the superatom concept that was developed for metallic and ligand-protected metallic clusters. The periodic electronic and geometric closed shells in clusters result in their properties being based on the stability they gain when they achieve closed shells. This stabilization results in the clusters having a well-defined valence, allowing them to be classified as superatoms-thus extending the Periodic Table to a third dimension. This Perspective focuses on extending the superatomic concept to ligated metal-chalcogen clusters that have recently been synthesized in solutions and form assemblies with counterions that have wide-ranging applications. Here, we illustrate that the periodic patterns emerge in the electronic structure of ligated metal-chalcogenide clusters. The stabilization gained by the closing of their electronic shells allows for the prediction of their redox properties. Further investigations reveal how the selection of ligands may control the redox properties of the superatoms. These ligated clusters may serve as chemical dopants for two-dimensional semiconductors to control their transport characteristics. Superatomic molecules of multiple metal-chalcogen superatoms allow for the formation of nano-p-n junctions ideal for directed transport and photon harvesting. This Perspective outlines future developments, including the synthesis of magnetic superatoms.
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Affiliation(s)
- Shiv N Khanna
- Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284-2000, USA
| | - Arthur C Reber
- Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284-2000, USA
| | - Dinesh Bista
- Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284-2000, USA
| | - Turbasu Sengupta
- Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284-2000, USA
| | - Ryan Lambert
- Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284-2000, USA
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175
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Pardehkhorram R, Alshawawreh F, Gonçales VR, Lee NA, Tilley RD, Gooding JJ. Functionalized Gold Nanorod Probes: A Sophisticated Design of SERS Immunoassay for Biodetection in Complex Media. Anal Chem 2021; 93:12954-12965. [PMID: 34520166 DOI: 10.1021/acs.analchem.1c02557] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Surface-enhanced Raman scattering (SERS) probes offer considerable opportunities in label-based biosensing and analysis. However, achieving specific and reproducible performance, where low detection limits are needed in complex media, remains a challenge. Herein, we present a general strategy employing gold nanorod SERS probes and rationally designed surface chemistry involving protein resistant layers and antibodies to allow for the selective detection of species in complex media. By utilizing the ability of gold nanorods for selective surface modification, Raman reporters (4-mercaptobenzoic acid) were attached to the tips. Importantly, the sides of the nanorods were modified using a mixed layer of two different length stabilizing ligands (carboxyl-terminated oligo ethylene glycols) to ensure colloidal stability, while antibodies were attached to the stabilizing ligands. The nanoparticle interfacial design improves the colloidal stability, unlocks the capability of the probes for targeting biomolecules in complex matrices, and gives the probes the high SERS efficiency. The utility of this probe is demonstrated herein via the detection of Salmonella bacteria at the single bacterium level in complex food matrices using an anti-Salmonella IgG antibody-conjugated probe. The modular nature of the surface chemistry enables the SERS probes to be employed with a molecularly diverse range of biorecognition species (e.g., antibodies and peptides) for many different analytes, thus opening up new opportunities for efficient biosensing applications.
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Affiliation(s)
- Raheleh Pardehkhorram
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Fida'A Alshawawreh
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Vinicius R Gonçales
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - N Alice Lee
- ARC Training Centre for Advanced Technologies in Food Manufacture (ATFM), School of Chemical Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Richard D Tilley
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia.,Electron Microscope Unit, Mark Wainwright Analytical Centre, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - J Justin Gooding
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, New South Wales 2052, Australia
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176
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Ielo I, Rando G, Giacobello F, Sfameni S, Castellano A, Galletta M, Drommi D, Rosace G, Plutino MR. Synthesis, Chemical-Physical Characterization, and Biomedical Applications of Functional Gold Nanoparticles: A Review. Molecules 2021; 26:5823. [PMID: 34641367 PMCID: PMC8510367 DOI: 10.3390/molecules26195823] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 09/17/2021] [Accepted: 09/20/2021] [Indexed: 12/12/2022] Open
Abstract
Relevant properties of gold nanoparticles, such as stability and biocompatibility, together with their peculiar optical and electronic behavior, make them excellent candidates for medical and biological applications. This review describes the different approaches to the synthesis, surface modification, and characterization of gold nanoparticles (AuNPs) related to increasing their stability and available features useful for employment as drug delivery systems or in hyperthermia and photothermal therapy. The synthetic methods reported span from the well-known Turkevich synthesis, reduction with NaBH4 with or without citrate, seeding growth, ascorbic acid-based, green synthesis, and Brust-Schiffrin methods. Furthermore, the nanosized functionalization of the AuNP surface brought about the formation of self-assembled monolayers through the employment of polymer coatings as capping agents covalently bonded to the nanoparticles. The most common chemical-physical characterization techniques to determine the size, shape and surface coverage of AuNPs are described underlining the structure-activity correlation in the frame of their applications in the biomedical and biotechnology sectors.
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Affiliation(s)
- Ileana Ielo
- Institute for the Study of Nanostructured Materials, ISMN—CNR, Palermo, c/o Department of ChiBioFarAm, University of Messina, Viale F. Stagno d’Alcontres 31, Vill. S. Agata, 98166 Messina, Italy; (I.I.); (F.G.); (S.S.); (A.C.)
| | - Giulia Rando
- Department of Chemical, Biological, Pharmaceutical and Analytical Sciences (ChiBioFarAm), University of Messina, Viale F. Stagno d’Alcontres 31, Vill. S. Agata, 98166 Messina, Italy; (G.R.); (M.G.); (D.D.)
| | - Fausta Giacobello
- Institute for the Study of Nanostructured Materials, ISMN—CNR, Palermo, c/o Department of ChiBioFarAm, University of Messina, Viale F. Stagno d’Alcontres 31, Vill. S. Agata, 98166 Messina, Italy; (I.I.); (F.G.); (S.S.); (A.C.)
| | - Silvia Sfameni
- Institute for the Study of Nanostructured Materials, ISMN—CNR, Palermo, c/o Department of ChiBioFarAm, University of Messina, Viale F. Stagno d’Alcontres 31, Vill. S. Agata, 98166 Messina, Italy; (I.I.); (F.G.); (S.S.); (A.C.)
- Department of Engineering, University of Messina, Contrada di Dio, S. Agata, 98166 Messina, Italy
| | - Angela Castellano
- Institute for the Study of Nanostructured Materials, ISMN—CNR, Palermo, c/o Department of ChiBioFarAm, University of Messina, Viale F. Stagno d’Alcontres 31, Vill. S. Agata, 98166 Messina, Italy; (I.I.); (F.G.); (S.S.); (A.C.)
| | - Maurilio Galletta
- Department of Chemical, Biological, Pharmaceutical and Analytical Sciences (ChiBioFarAm), University of Messina, Viale F. Stagno d’Alcontres 31, Vill. S. Agata, 98166 Messina, Italy; (G.R.); (M.G.); (D.D.)
| | - Dario Drommi
- Department of Chemical, Biological, Pharmaceutical and Analytical Sciences (ChiBioFarAm), University of Messina, Viale F. Stagno d’Alcontres 31, Vill. S. Agata, 98166 Messina, Italy; (G.R.); (M.G.); (D.D.)
| | - Giuseppe Rosace
- Department of Engineering and Applied Sciences, University of Bergamo, Viale Marconi 5, 24044 Dalmine, Italy
| | - Maria Rosaria Plutino
- Institute for the Study of Nanostructured Materials, ISMN—CNR, Palermo, c/o Department of ChiBioFarAm, University of Messina, Viale F. Stagno d’Alcontres 31, Vill. S. Agata, 98166 Messina, Italy; (I.I.); (F.G.); (S.S.); (A.C.)
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177
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Miura H, Hirata R, Tomoya T, Shishido T. Electrophilic C(sp
2
)−H Silylation by Supported Gold Catalysts. ChemCatChem 2021. [DOI: 10.1002/cctc.202101123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Hiroki Miura
- Department of Applied Chemistry for Environment Graduate School of Urban Environmental Sciences Tokyo Metropolitan University 1-1 Minami-Osawa Hachioji, Tokyo 192-0397 Japan
- Research Center for Hydrogen Energy-based Society 1-1 Minami-Osawa Hachioji, Tokyo 192-0397 Japan
- Elements Strategy Initiative for Catalysts & Batteries Kyoto University 1-30 Goryo-Ohara Nishikyo-ku, Kyoto 615-8245 Japan
| | - Ryuji Hirata
- Department of Applied Chemistry for Environment Graduate School of Urban Environmental Sciences Tokyo Metropolitan University 1-1 Minami-Osawa Hachioji, Tokyo 192-0397 Japan
| | - Toyomasu Tomoya
- Department of Applied Chemistry for Environment Graduate School of Urban Environmental Sciences Tokyo Metropolitan University 1-1 Minami-Osawa Hachioji, Tokyo 192-0397 Japan
| | - Tetsuya Shishido
- Department of Applied Chemistry for Environment Graduate School of Urban Environmental Sciences Tokyo Metropolitan University 1-1 Minami-Osawa Hachioji, Tokyo 192-0397 Japan
- Research Center for Hydrogen Energy-based Society 1-1 Minami-Osawa Hachioji, Tokyo 192-0397 Japan
- Elements Strategy Initiative for Catalysts & Batteries Kyoto University 1-30 Goryo-Ohara Nishikyo-ku, Kyoto 615-8245 Japan
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178
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Sala L, Sedmidubská B, Vinklárek I, Fárník M, Schürmann R, Bald I, Med J, Slavíček P, Kočišek J. Electron attachment to microhydrated 4-nitro- and 4-bromo-thiophenol. Phys Chem Chem Phys 2021; 23:18173-18181. [PMID: 34612280 DOI: 10.1039/d1cp02019f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We investigate the effect of microhydration on electron attachment to thiophenols with halogen (Br) and nitro (NO2) functional groups in the para position. We focus on the formation of anions upon the attachment of low-energy electrons with energies below 8 eV to heterogeneous clusters of the thiophenols with water. For nitro-thiophenol (NTP), the primary reaction channel observed is the associative electron attachment, irrespective of the microhydration. On the other hand, bromothiophenol (BTP) fragments significantly upon the electron attachment, producing Br- and (BTP-H)- anions. Microhydration suppresses fragmentation of both molecules, however in bromothiophenol, the Br- channel remains intense and Br(H2O)n- hydrated fragment clusters are observed. The results are supported by the reaction energetics obtained from ab initio calculations. Different dissociation dynamics of NTP and BTP can be related to different products of their plasmon induced reactions on Au nanoparticles. Computational modeling of the simplified BTP(H2O) system indicates that the electron attachment products reflect the structure of neutral precursor clusters - the anion dissociation dynamics is controlled by the hydration site.
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Affiliation(s)
- Leo Sala
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech Republic.
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179
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Zhang Y, He C, de La Harpe K, Goodwin PM, Petty JT, Kohler B. A single nucleobase tunes nonradiative decay in a DNA-bound silver cluster. J Chem Phys 2021; 155:094305. [PMID: 34496579 DOI: 10.1063/5.0056836] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
DNA strands are polymeric ligands that both protect and tune molecular-sized silver cluster chromophores. We studied single-stranded DNA C4AC4TC3XT4 with X = guanosine and inosine that form a green fluorescent Ag10 6+ cluster, but these two hosts are distinguished by their binding sites and the brightness of their Ag10 6+ adducts. The nucleobase subunits in these oligomers collectively coordinate this cluster, and fs time-resolved infrared spectra previously identified one point of contact between the C2-NH2 of the X = guanosine, an interaction that is precluded for inosine. Furthermore, this single nucleobase controls the cluster fluorescence as the X = guanosine complex is ∼2.5× dimmer. We discuss the electronic relaxation in these two complexes using transient absorption spectroscopy in the time window 200 fs-400 µs. Three prominent features emerged: a ground state bleach, an excited state absorption, and a stimulated emission. Stimulated emission at the earliest delay time (200 fs) suggests that the emissive state is populated promptly following photoexcitation. Concurrently, the excited state decays and the ground state recovers, and these changes are ∼2× faster for the X = guanosine compared to the X = inosine cluster, paralleling their brightness difference. In contrast to similar radiative decay rates, the nonradiative decay rate is 7× higher with the X = guanosine vs inosine strand. A minor decay channel via a dark state is discussed. The possible correlation between the nonradiative decay and selective coordination with the X = guanosine/inosine suggests that specific nucleobase subunits within a DNA strand can modulate cluster-ligand interactions and, in turn, cluster brightness.
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Affiliation(s)
- Yuyuan Zhang
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, USA
| | - Chen He
- Department of Chemistry, Furman University, Greenville, South Carolina 29613, USA
| | - Kimberly de La Harpe
- Department of Physics, United States Air Force Academy, U.S. Air Force Academy, Colorado 80840, USA
| | - Peter M Goodwin
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Mail Stop K771, Los Alamos, New Mexico 87545, USA
| | - Jeffrey T Petty
- Department of Chemistry, Furman University, Greenville, South Carolina 29613, USA
| | - Bern Kohler
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, USA
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180
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Bian R, Li C, Liu Q, Cao G, Fu Q, Meng P, Zhou J, Liu F, Liu Z. Recent progress in the synthesis of novel two-dimensional van der Waals materials. Natl Sci Rev 2021; 9:nwab164. [PMID: 35591919 PMCID: PMC9113016 DOI: 10.1093/nsr/nwab164] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/21/2021] [Accepted: 08/15/2021] [Indexed: 11/15/2022] Open
Abstract
Abstract
The last decade has witnessed the significant progress of physical fundamental research and great success of practical application in two-dimensional (2D) van der Waals (vdW) materials since the discovery of graphene in 2004. To date, vdW materials is still a vibrant and fast-expanding field, where tremendous reports have been published covering topics from cutting-edge quantum technology to urgent green energy, and so on. Here, we briefly review the emerging hot physical topics and intriguing materials, such as 2D topological materials, piezoelectric materials, ferroelectric materials, magnetic materials and twistronic heterostructures. Then, various vdW material synthetic strategies are discussed in detail, concerning the growth mechanisms, preparation conditions and typical examples. Finally, prospects and further opportunities in the booming field of 2D materials are addressed.
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Affiliation(s)
| | | | | | - Guiming Cao
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Qundong Fu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
- CNRS-International-NTU-Thales Research Alliance (CINTRA), Singapore 637553, Singapore
| | - Peng Meng
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Jiadong Zhou
- Key Lab of Advanced Optoelectronic Quantum Architecture and Measurement (Ministry of Education), Beijing Key Lab of Nanophotonics and Ultrafine Optoelectronic Systems, and School of Physics, Beijing Institute of Technology, Beijing 100081, China
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181
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Hang NTN, Si NT, Nguyen MT, Nhat PV. Adsorption/Desorption Behaviors and SERS Chemical Enhancement of 6-Mercaptopurine on a Nanostructured Gold Surface: The Au 20 Cluster Model. Molecules 2021; 26:5422. [PMID: 34500855 PMCID: PMC8434346 DOI: 10.3390/molecules26175422] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 08/30/2021] [Accepted: 08/31/2021] [Indexed: 01/24/2023] Open
Abstract
Computational approaches are employed to elucidate the binding mechanism and the SERS phenomenon of 6-mercaptopurine (6MP) adsorbed on the tetrahedral Au20 cluster as a simple model for a nanostructured gold surface. Computations are carried out in both vacuum and aqueous environments using a continuum model. In the gaseous phase and neutral conditions, interaction of 6MP with the gold cluster is mostly dominated by a covalent Au-S bond and partially stabilized by the Au⋅⋅⋅H-N coupling. However, in acidic solution, the nonconventional Au⋅⋅⋅H-S hydrogen-bond becomes the most favorable binding mode. The 6MP affinity for gold clusters decreases in the order of vacuum > neutral solution > acidic medium. During the adsorption, the energy gap of Au20 substantially declines, leading to an increase in its electrical conductivity, which can be converted to an electrical noise. Moreover, such interaction is likely a reversible process and triggered by either the low pH in sick tissues or the presence of cysteine residues in protein matrices. While N-H bending and stretching vibrations play major roles in the SERS phenomenon of 6MP on gold surfaces in neutral solution, the strongest enhancement in acidic environment is mostly due to an Au⋅⋅⋅H-S coupling, rather than an aromatic ring-gold surface π overlap as previously proposed.
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Affiliation(s)
- Nguyen Thi Nhat Hang
- Faculty of Food Science and Technology, Thu Dau Mot University, Thu Dau Mot 590000, Vietnam
| | - Nguyen Thanh Si
- Department of Chemistry, Can Tho University, Can Tho 900000, Vietnam
| | - Minh Tho Nguyen
- Institute for Computational Science and Technology (ICST), Ho Chi Minh City 700000, Vietnam
| | - Pham Vu Nhat
- Department of Chemistry, Can Tho University, Can Tho 900000, Vietnam
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182
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Yang Z, Zhang S, Zhao H, Li A, Luo L, Guo L. Subnano-FeO x Clusters Anchored in an Ultrathin Amorphous Al 2O 3 Nanosheet for Styrene Epoxidation. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01366] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhao Yang
- School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology, Beihang University, Beijing 100191, China
| | - Shuo Zhang
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Science, Shanghai 201204, China
| | - Hewei Zhao
- School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology, Beihang University, Beijing 100191, China
| | - Anran Li
- Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, School of Medicine and Engineering, Beihang University, Beijing 100191, China
| | - Long Luo
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Lin Guo
- School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology, Beihang University, Beijing 100191, China
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183
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Dang MN, Hoover EC, Scully MA, Sterin EH, Day ES. Antibody Nanocarriers for Cancer Management. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2021; 19:100295. [PMID: 34423177 PMCID: PMC8373047 DOI: 10.1016/j.cobme.2021.100295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Antibodies are extremely valuable tools in modern medicine due to their ability to target diseased cells through selective antigen binding and thereby regulate cellular signaling or inhibit cell-cell interactions with high specificity. However, the therapeutic utility of freely delivered antibodies is limited by high production costs, low efficacy, dose-limiting toxicities, and inability to cross the cellular membrane (which hinders antibodies against intracellular targets). To overcome these limitations, researchers have begun to develop nanocarriers that can improve antibodies' delivery efficiency, safety profile, and clinical potential. This review summarizes recent advances in the design and implementation of nanocarriers for extracellular or intracellular antibody delivery, emphasizing important design considerations, and points to future directions for the field.
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Affiliation(s)
- Megan N. Dang
- Department of Biomedical Engineering, University of Delaware, Newark, Delaware, 19716, United States
| | - Elise C. Hoover
- Department of Biomedical Engineering, University of Delaware, Newark, Delaware, 19716, United States
| | - Mackenzie A. Scully
- Department of Biomedical Engineering, University of Delaware, Newark, Delaware, 19716, United States
| | - Eric H. Sterin
- Department of Biomedical Engineering, University of Delaware, Newark, Delaware, 19716, United States
| | - Emily S. Day
- Department of Biomedical Engineering, University of Delaware, Newark, Delaware, 19716, United States
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware, 19716, United States
- Helen F. Graham Cancer Center & Research Institute, Newark, Delaware, 19713, United States
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184
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The trisulfur radical ion S 3 •- controls platinum transport by hydrothermal fluids. Proc Natl Acad Sci U S A 2021; 118:2109768118. [PMID: 34417302 DOI: 10.1073/pnas.2109768118] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Platinum group elements (PGE) are considered to be very poorly soluble in aqueous fluids in most natural hydrothermal-magmatic contexts and industrial processes. Here, we combined in situ X-ray absorption spectroscopy and solubility experiments with atomistic and thermodynamic simulations to demonstrate that the trisulfur radical ion S3 •- forms very stable and soluble complexes with both PtII and PtIV in sulfur-bearing aqueous solution at elevated temperatures (∼300 °C). These Pt-bearing species enable (re)mobilization, transfer, and focused precipitation of platinum up to 10,000 times more efficiently than any other common inorganic ligand, such as hydroxide, chloride, sulfate, or sulfide. Our results imply a far more important contribution of sulfur-bearing hydrothermal fluids to PGE transfer and accumulation in the Earth's crust than believed previously. This discovery challenges traditional models of PGE economic concentration from silicate and sulfide melts and provides new possibilities for resource prospecting in hydrothermal shallow crust settings. The exceptionally high capacity of the S3 •- ion to bind platinum may also offer new routes for PGE selective extraction from ore and hydrothermal synthesis of noble metal nanomaterials.
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185
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Yin X, Tang CS, Zheng Y, Gao J, Wu J, Zhang H, Chhowalla M, Chen W, Wee ATS. Recent developments in 2D transition metal dichalcogenides: phase transition and applications of the (quasi-)metallic phases. Chem Soc Rev 2021; 50:10087-10115. [PMID: 34396377 DOI: 10.1039/d1cs00236h] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The advent of two-dimensional transition metal dichalcogenides (2D-TMDs) has led to an extensive amount of interest amongst scientists and engineers alike and an intensive amount of research has brought about major breakthroughs in the electronic and optical properties of 2D materials. This in turn has generated considerable interest in novel device applications. With the polymorphic structural features of 2D-TMDs, this class of materials can exhibit both semiconducting and metallic (quasi-metallic) properties in their respective phases. This polymorphic property further increases the interest in 2D-TMDs both in fundamental research and for their potential utilization in novel high-performance device applications. In this review, we highlight the unique structural properties of few-layer and monolayer TMDs in the metallic 1T- and quasi-metallic 1T'-phases, and how these phases dictate their electronic and optical properties. An overview of the semiconducting-to-(quasi)-metallic phase transition of 2D-TMD systems will be covered along with a discussion on the phase transition mechanisms. The current development in the applications of (quasi)-metallic 2D-TMDs will be presented ranging from high-performance electronic and optoelectronic devices to energy storage, catalysis, piezoelectric and thermoelectric devices, and topological insulator and neuromorphic computing applications. We conclude our review by highlighting the challenges confronting the utilization of TMD-based systems and projecting the future developmental trends with an outlook of the progress needed to propel this exciting field forward.
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Affiliation(s)
- Xinmao Yin
- Shanghai Key Laboratory of High Temperature Superconductors, Physics Department, Shanghai University, Shanghai 200444, China
| | - Chi Sin Tang
- Institute of Materials Research and Engineering, A-STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, 138634, Singapore and Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore.
| | - Yue Zheng
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore.
| | - Jing Gao
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore.
| | - Jing Wu
- Institute of Materials Research and Engineering, A-STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, 138634, Singapore
| | - Hua Zhang
- Department of Chemistry, City University of Hong Kong, Hong Kong, China and Hong Kong Branch of National Precious Metals Material Engineering Research Center (NPMM), City University of Hong Kong, Hong Kong, China and Shenzhen Research Institute, City University of Hong Kong, Shenzhen, 518057, China
| | - Manish Chhowalla
- Department of Materials Science & Metallurgy, University of Cambridge, Cambridge, CB30FS, UK
| | - Wei Chen
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore. and Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Andrew T S Wee
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore.
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186
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Rodríguez-Kessler PL, Rojas-Poblete M, Muñoz-Castro A. Evaluation of ultrasmall coinage metal M 13(dppe) 6 M = Cu, Ag, and Au clusters. Bonding, structural and optical properties from relativistic DFT calculations. Phys Chem Chem Phys 2021; 23:18035-18043. [PMID: 34386809 DOI: 10.1039/d1cp02451e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ultrasmall ligand-protected clusters are prototypical species for evaluating the variation at the bottom of the nanoscale range. Here we explored the ultrasmall gold-phosphine M13(dppe)6 cluster, as a prototypical framework to gain insights into the fundamental similarities and differences between Au, Ag, and Cu, in the 1-3 nm size range, via relativistic DFT calculations. Different charge states involving 8- and 10-cluster electron (ce) species with a 1S21P6 and 1S21P61D2 configuration, leading to structural modification in the Au species between Au13(dppm)65+ and Au13(dppm)63+, respectively. Furthermore, this structural distortion of the M13 core is found to occur to a lower degree for the calculated Ag and Cu counterparts. Interestingly, optical properties exhibit similar main patterns along with the series, inducing a blue-shift for silver and copper, in comparison to the gold parent cluster. For 10-ce species, the main features of 8-ce are retained with the appearance of several weak transitions in the range. The ligand-core interaction is enhanced for gold counterparts and decreased for lighter counterparts resulting in the Au > Cu > Ag trend for the interaction stabilization. Hence, the Ag and Cu counterparts of the Au13(dppm)6 cluster appear as useful alternatives, which can be further explored towards different cluster alternatives for building blocks for nanostructured materials.
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Affiliation(s)
- Peter L Rodríguez-Kessler
- Laboratorio de Química Inorgánica y Materiales Moleculares, Facultad de Ingeniería, Universidad Autonoma de Chile, El Llano Subercaseaux 2801, Santiago, Chile.
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187
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Sato Y, Yao H. Mixed-diphosphine-protected chiral undecagold clusters Au 11( S, S-DIOP) 4( rac-/ R-/ S-BINAP): effect of the handedness of BINAP on their chiroptical responses. Phys Chem Chem Phys 2021; 23:16847-16854. [PMID: 34328157 DOI: 10.1039/d1cp02106k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this article, we report a preference of homochiral-type ligation of BINAP that produces SS-type ligand assembly onto the Au11 clusters protected by diphosphine S,S-DIOP. The Au11 clusters synthesized and isolated are Au11(S,S-DIOP)4(rac-/R-/S-BINAP), and their optical/chiroptical responses are characterized. Absorption spectra of these Au11 clusters are almost identical to each other, but their CD profiles are dependent on the handedness of BINAP. In Au11(S,S-DIOP)4(rac-BINAP), the yield of S-BINAP or R-BINAP coordination is roughly comparable, but we found a small but distinctive preference in the S-BINAP ligation; that is, homochiral-type (SS-type) ligand assembly formation. Quantum chemical calculations for simplified model clusters suggest equal contributions of S- and R-form BINAP coordination. The experimentally-observed preference of homochiral-type ligation can then be due to that of the whole ligand structures and assemblies involving interligand interactions. Chiral sorting and amplification processes through the assembly control of homochirality or heterochirality are of primary importance for the development of enantioselective reactions, so we anticipate this finding will contribute to further understanding of such processes based on various metal clusters with chiral ligands.
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Affiliation(s)
- Yasuhiko Sato
- Division of Chemistry for Materials, Graduate School of Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu, Mie 514-8507, Japan.
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188
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Chen S, Li M, Yu S, Louisia S, Chuang W, Gao M, Chen C, Jin J, Salmeron MB, Yang P. Ligand removal of Au 25 nanoclusters by thermal and electrochemical treatments for selective CO 2 electroreduction to CO. J Chem Phys 2021; 155:051101. [PMID: 34364344 DOI: 10.1063/5.0059363] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Undercoordinated metal nanoclusters have shown great promise for various catalytic applications. However, their activity is often limited by the covalently bonded ligands, which could block the active surface sites. Here, we investigate the ligand removal process for Au25 nanoclusters using both thermal and electrochemical treatments, as well as its impact on the electroreduction of CO2 to CO. The Au25 nanoclusters are synthesized with 2-phenylethanethiol as the capping agent and anchored on sulfur-doped graphene. The thiolate ligands can be readily removed under either thermal annealing at ≥180°C or electrochemical biasing at ≤-0.5 V vs reversible hydrogen electrode, as evidenced by the Cu underpotential deposition surface area measurement, x-ray photoelectron spectroscopy, and extended x-ray absorption fine structure spectroscopy. However, these ligand-removing treatments also trigger the structural evolution of Au25 nanoclusters concomitantly. The thermally and electrochemically treated Au25 nanoclusters show enhanced activity and selectivity for the electrochemical CO2-to-CO conversion than their pristine counterpart, which is attributed to the exposure of undercoordinated Au sites on the surface after ligand removal. This work provides facile strategies to strip away the staple ligands from metal nanoclusters and highlights its importance in promoting the catalytic performances.
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Affiliation(s)
- Shouping Chen
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA
| | - Mufan Li
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Sunmoon Yu
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA
| | - Sheena Louisia
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Wesley Chuang
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Mengyu Gao
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA
| | - Chubai Chen
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Jianbo Jin
- Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Miquel B Salmeron
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA
| | - Peidong Yang
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA
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189
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Matsuyama T, Kikkawa S, Fujiki Y, Tsukada M, Takaya H, Yasuda N, Nitta K, Nakatani N, Negishi Y, Yamazoe S. Thermal stability of crown-motif [Au 9(PPh 3) 8] 3+ and [MAu 8(PPh 3) 8] 2+ (M = Pd, Pt) clusters: Effects of gas composition, single-atom doping, and counter anions. J Chem Phys 2021; 155:044307. [PMID: 34340395 DOI: 10.1063/5.0059690] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The thermal behaviors of ligand-protected metal clusters, [Au9(PPh3)8]3+ and [MAu8(PPh3)8]2+ (M = Pd, Pt) with a crown-motif structure, were investigated to determine the effects of the gas composition, single-atom doping, and counter anions on the thermal stability of these clusters. We successfully synthesized crown-motif [PdAu8(PPh3)8][HPMo12O40] (PdAu8-PMo12) and [PtAu8(PPh3)8][HPMo12O40] (PtAu8-PMo12) salts with a cesium-chloride-type structure, which is the same as the [Au9(PPh3)8][PMo12O40] (Au9-PMo12) structure. Thermogravimetry-differential thermal analysis/mass spectrometry analysis revealed that the crown-motif structure of Au9-PMo12 was decomposed at ∼475 K without weight loss to form Au nanoparticles. After structural decomposition, the ligands were desorbed from the sample. The ligand desorption temperature of Au9-PMo12 increased under 20% O2 conditions because of the formation of Au nanoparticles and stronger interaction of the formed O=PPh3 than PPh3. The Pd and Pt single-atom doping improved the thermal stability of the clusters. This improvement was due to the formation of a large bonding index of M-Au and a change in Au-PPh3 bonding energy by heteroatom doping. Moreover, we found that the ligand desorption temperatures were also affected by the type of counter anions, whose charge and size influence the localized Coulomb interaction and cluster packing between the cationic ligand-protected metal clusters and counter anions.
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Affiliation(s)
- Tomoki Matsuyama
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Soichi Kikkawa
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Yu Fujiki
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Mio Tsukada
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Hikaru Takaya
- Institute for Chemical Research, Kyoto University, Gokasho, Uji-city, Kyoto 611-0011, Japan
| | - Nobuhiro Yasuda
- Center for Synchrotron Radiation Research, Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Kiyofumi Nitta
- Center for Synchrotron Radiation Research, Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Naoki Nakatani
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Yuichi Negishi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Seiji Yamazoe
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
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190
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Liu T, Jiang DE. Understanding the interaction between carboxylates and coinage metals from first principles. J Chem Phys 2021; 155:034301. [PMID: 34293880 DOI: 10.1063/5.0053045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Carboxylate groups have recently been explored as a new type of ligand to protect superatomic copper and silver nanoclusters, but little is known of the interfacial structure and bonding. Here, we employ density functional theory to investigate the interfaces of a model carboxylate group, CH3COO, on the coinage metal surfaces and clusters. We found that μ2-CH3COO is the most preferred binding mode on the three M(111) surfaces (M = Cu, Ag, and Au), while μ3-CH3COO is also stable on Cu(111) and Ag(111). The saturation coverage was found to be about seven CH3COO groups per nm2 for all surfaces. CH3COO has the strongest binding on Cu and weakest on Au. Moving from the flat surfaces to the icosahedral M13 clusters, we found that the eight-electron superatomic [M13(CH3COO)6]- nanoclusters also prefer the μ2-CH3COO mode on the surface. The icosahedral kernel in [Cu13(CH3COO)6]- and [Ag13(CH3COO)6]- was well maintained after geometry optimization, but a larger deformation was found in [Au13(CH3COO)6]-. Given the broad availability and variety of carboxylic acids including amino acids, our work suggests that carboxylate groups could be the next-generation ligands to further expand the universe of atomically precise metal clusters, especially for Cu and Ag.
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Affiliation(s)
- Tongyu Liu
- Department of Chemistry, University of California, Riverside, California 92521, USA
| | - De-En Jiang
- Department of Chemistry, University of California, Riverside, California 92521, USA
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191
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Sindram J, Krüsmann M, Otten M, Pauly T, Nagel-Steger L, Karg M. Versatile Route toward Hydrophobically Polymer-Grafted Gold Nanoparticles from Aqueous Dispersions. J Phys Chem B 2021; 125:8225-8237. [PMID: 34260239 DOI: 10.1021/acs.jpcb.1c03772] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Stabilization of gold nanoparticles in organic solvents is a key challenge in making them available for a wider range of material applications. Polymers are often used as stabilizing ligands because they also allow for the introduction of new properties and functionalities. Many of the established synthesis protocols for gold nanoparticles are water-based. However, the insolubility of many synthetic polymers in water renders the direct functionalization of aqueous particle dispersions with these ligands difficult. Here, we report on an approach for the functionalization of gold nanoparticles, which were prepared by aqueous synthesis, with hydrophobic polymer ligands and their characterization in nonpolar, organic dispersions. Our method employs an auxiliary ligand to first transfer gold nanoparticles from an aqueous to an organic medium. In the organic phase, the auxiliary ligand is then displaced by thiolated polystyrene ligands to form a dense polymer brush on the particle surface. We characterize the structure of the ligand shell using electron microscopy, scattering techniques, and ultracentrifugation and analyze the influence of the molecular weight of the polystyrene ligands on the structure of the polymer brush. We further investigate the colloidal stability of polystyrene-functionalized gold nanoparticles in various organic solvents. Finally, we extend the use of our protocol from small, spherical gold nanoparticles to larger gold nanorods and nanocubes.
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Affiliation(s)
- Julian Sindram
- Institut für Physikalische Chemie I: Kolloide und Nanooptik, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Marcel Krüsmann
- Institut für Physikalische Chemie I: Kolloide und Nanooptik, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Marius Otten
- Institut für Physikalische Chemie I: Kolloide und Nanooptik, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Thomas Pauly
- Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany.,IBI-7, Structural Biochemistry, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Strasse, 52425 Jülich, Germany
| | - Luitgard Nagel-Steger
- Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany.,IBI-7, Structural Biochemistry, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Strasse, 52425 Jülich, Germany
| | - Matthias Karg
- Institut für Physikalische Chemie I: Kolloide und Nanooptik, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
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192
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Shubin N, Emelianov A, Uspenskii Y, Gorbatsevich A. Interacting resonances and antiresonances in conjugated hydrocarbons: exceptional points and bound states in the continuum. Phys Chem Chem Phys 2021; 23:20854-20866. [PMID: 34254613 DOI: 10.1039/d1cp02504j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Quantum interference dramatically modulates electron transport that provides exciting prospects for molecular electronics. We develop a holistic picture of quantum interference phenomena in molecular conductors based on conjugated hydrocarbons taking into account the interaction of resonances and antiresonances (AR). This interaction can result in the coalescence of resonances and ARs accompanied by a significant quantum transparency change. As such a change results from a small variation of the system parameters, it is essential for reducing power consumption in electronics. We establish that the coalescence of ARs is intimately connected with the exceptional point of an underlying non-Hermitian Hamiltonian. The coalescence of ARs cannot be explained considering only the LUMO and HOMO without orbitals beyond them. Cyclobutadiene is discussed as an example. We show that the interaction of resonances and ARs can also result in the formation of a bound state in the continuum (BIC). Our formalism accounting for separate descriptions of resonances and ARs is especially suitable for describing BICs, which can be considered as either a resonance or an AR with zero width. In particular, we show that benzene in the para-configuration possesses BICs, which can be revealed as narrow Fano resonances (FRs) in the transmission spectrum by perturbing the molecule symmetry. Any BIC can be turned into an FR by a proper change of the system parameters, but the reverse is not true. We demonstrate that BICs are related to such chemical concepts as non-bonding orbitals, radicals, and diradicals. Our analytical results within the Hückel formalism are closely reproduced by ab initio simulations. Therefore, experimentally revealing these phenomena looks quite probable.
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Affiliation(s)
- Nikolay Shubin
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 119991, Moscow, Russia.
| | - Aleksei Emelianov
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 119991, Moscow, Russia. and National Research University of Electronic Technology, Zelenograd, 124498, Moscow, Russia
| | - Yuriy Uspenskii
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 119991, Moscow, Russia.
| | - Alexander Gorbatsevich
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 119991, Moscow, Russia.
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193
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Cheng Y, Chen J, Hu B, Pi F, Yu H, Guo Y, Xie Y, Yao W, Qian H. Spectroscopic investigations of the changes in ligand conformation during the synthesis of soy protein-templated fluorescent gold nanoclusters. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 255:119725. [PMID: 33813151 DOI: 10.1016/j.saa.2021.119725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 03/11/2021] [Accepted: 03/15/2021] [Indexed: 06/12/2023]
Abstract
In this paper, the potential relationship between fluorescence and changes in the ligand conformation observed during the synthesis of soy protein-templated fluorescent gold nanoclusters (SP-AuNCs) was studied using a series of spectroscopic techniques. The results show that the determinants of the fluorescence effect in SP-AuNCs changed with the reaction time during the synthesis process. In the early stage of the reaction (within 60 min), the fluorescence intensity was dominated by the Au nucleus, followed by the combination of the Au nucleus and protein ligand. The structure of the protein ligand also underwent a transition from ordered to disordered to ordered. At the same time, its role in the reaction also changed from providing the reducing power to protecting the Au nucleus and contributing to the transition of the fluorescence effect in the AuNCs via ligand-to-metal charge transfer (LMCT). Using two-dimensional (2D) photon spectra correlation analysis, the formation and growth of the Au nuclei and the LMCT effect observed during the synthesis of the SP-AuNCs were found to be the major causes for the changes in the conformation of the protein ligand. Our results are an important discovery and can be used to explain the mechanism of protein ligands in the synthesis of gold nanoclusters.
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Affiliation(s)
- Yuliang Cheng
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Jiangsu 214122, China.
| | - Jiannan Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Jiangsu 214122, China
| | - Bin Hu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Jiangsu 214122, China
| | - Fuwei Pi
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Jiangsu 214122, China
| | - Hang Yu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Jiangsu 214122, China
| | - Yahui Guo
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Jiangsu 214122, China
| | - Yunfei Xie
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Jiangsu 214122, China
| | - Weirong Yao
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Jiangsu 214122, China; Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Jiangsu 214122, China
| | - He Qian
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Jiangsu 214122, China.
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194
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Wang E, Xu WW, Zhu B, Gao Y. Understanding the Chemical Insights of Staple Motifs of Thiolate-Protected Gold Nanoclusters. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2001836. [PMID: 32761984 DOI: 10.1002/smll.202001836] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 06/12/2020] [Indexed: 06/11/2023]
Abstract
Improving the fundamental understanding of the basic structures of ligand-protected gold nanoclusters is essential to their bottom-up synthesis as well as their further application explorations. The thiolate ligands that cover the central metal core in staple motifs are vital for the stability of the gold clusters. However, the knowledge about the geometrical and bonding characters of the thiolate ligands has not been fully uncovered yet. In this work, density functional theory calculations and molecular orbital analysis are applied to show that the Au atoms in the thiolate ligands are hypervalent. The chemical insights of the linear SAuS configuration as well as the lengthened AuS bond by combining the 3-center 4-electron (3c-4e) model and the well-recognized valence shell electron pair repulsion theory are revealed. Valence bond formulations of the motifs are given to provide more chemical insights, for example, the resonant structures, to show how the thiolate motif forms one covalent bond and one dative covalent bond with the Au core. This work provides a thorough understanding of the structure and bonding pattern of thiolate ligands of Au nanoclusters, which is important for the rational design of ligands-protected Au nanoclusters.
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Affiliation(s)
- Endong Wang
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, P. R. China
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, P. R. China
| | - Beien Zhu
- Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P. R. China
| | - Yi Gao
- Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P. R. China
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195
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Farrokhpour H, Gerami M. Interaction of M@Au12 nanocluster (M = Au, Ag, Pd, and Pt) with different forms of cysteine (uncharged, cationic, anionic, and zwitterion) via the Au-S bond. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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196
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Swierczewski M, Maroni P, Chenneviere A, Dadras MM, Lee LT, Bürgi T. Deposition of Extended Ordered Ultrathin Films of Au 38 (SC 2 H 4 Ph) 24 Nanocluster using Langmuir-Blodgett Technique. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2005954. [PMID: 33559304 DOI: 10.1002/smll.202005954] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 12/21/2020] [Indexed: 06/12/2023]
Abstract
Langmuir-Blodgett technique is utilized to deposit ultrathin films of Au38 (SC2 H4 Ph)24 nanocluster onto solid surfaces such as mica and silicon. The morphologies of the films transferred at various surface pressures within the mono/bi/trilayer regime are studied by atomic force microscopy (AFM). The time spent on the water surface before the deposition has a decisive effect on the final ordering of nanoclusters within the network and is studied by fast AFM, X-ray reflectivity, and grazing-incidence wide-angle X-ray scattering.
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Affiliation(s)
- Michal Swierczewski
- Department of Physical Chemistry, University of Geneva, Geneva, 30 Quai Ernest-Ansermet, Geneva 4, CH-1211, Switzerland
| | - Plinio Maroni
- Department of Physical Chemistry, University of Geneva, Geneva, 30 Quai Ernest-Ansermet, Geneva 4, CH-1211, Switzerland
| | - Alexis Chenneviere
- Laboratoire Léon Brillouin, UMR12 CEA-CNRS, Université Paris-Saclay, CEA-Saclay, Gif-sur-Yvette Cedex, 91191, France
| | - Mohammad M Dadras
- CSEM Centre Suisse d'Electronique et de Microtechnique SA, Neuchâtel, 2002, Switzerland
| | - Lay-Theng Lee
- Laboratoire Léon Brillouin, UMR12 CEA-CNRS, Université Paris-Saclay, CEA-Saclay, Gif-sur-Yvette Cedex, 91191, France
| | - Thomas Bürgi
- Department of Physical Chemistry, University of Geneva, Geneva, 30 Quai Ernest-Ansermet, Geneva 4, CH-1211, Switzerland
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197
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Matus MF, Häkkinen H. Atomically Precise Gold Nanoclusters: Towards an Optimal Biocompatible System from a Theoretical-Experimental Strategy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2005499. [PMID: 33533179 DOI: 10.1002/smll.202005499] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 12/20/2020] [Indexed: 06/12/2023]
Abstract
Potential biomedical applications of gold nanoparticles have increasingly been reported with great promise for diagnosis and therapy of several diseases. However, for such a versatile nanomaterial, the advantages and potential health risks need to be addressed carefully, as the available information about their toxicity is limited and inconsistent. Atomically precise gold nanoclusters (AuNCs) have emerged to overcome this challenge due to their unique features, such as superior stability, excellent biocompatibility, and efficient renal clearance. Remarkably, the elucidation of their structural and physicochemical properties provided by theory-experiment investigations offers exciting opportunities for site-specific biofunctionalization of the nanoparticle surface, which remains a significant concern for most of the materials in the biomedical field. This concept highlights the advantages conferred by atomically precise AuNCs for biomedical applications and the powerful strategy combining computational and experimental studies towards finding an optimal biocompatible AuNCs-based nanosystem.
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Affiliation(s)
- María Francisca Matus
- Department of Physics, Nanoscience Center (NSC), University of Jyväskylä, Jyväskylä, FI-40014, Finland
| | - Hannu Häkkinen
- Departments of Physics and Chemistry, Nanoscience Center (NSC), University of Jyväskylä, Jyväskylä, FI-40014, Finland
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198
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Inayeh A, Groome RRK, Singh I, Veinot AJ, de Lima FC, Miwa RH, Crudden CM, McLean AB. Self-assembly of N-heterocyclic carbenes on Au(111). Nat Commun 2021; 12:4034. [PMID: 34188031 PMCID: PMC8241988 DOI: 10.1038/s41467-021-23940-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 05/04/2021] [Indexed: 01/14/2023] Open
Abstract
Although the self-assembly of organic ligands on gold has been dominated by sulfur-based ligands for decades, a new ligand class, N-heterocyclic carbenes (NHCs), has appeared as an interesting alternative. However, fundamental questions surrounding self-assembly of this new ligand remain unanswered. Herein, we describe the effect of NHC structure, surface coverage, and substrate temperature on mobility, thermal stability, NHC surface geometry, and self-assembly. Analysis of NHC adsorption and self-assembly by scanning tunneling microscopy and density functional theory have revealed the importance of NHC-surface interactions and attractive NHC-NHC interactions on NHC monolayer structures. A remarkable way these interactions manifest is the need for a threshold NHC surface coverage to produce upright, adatom-mediated adsorption motifs with low surface diffusion. NHC wingtip structure is also critical, with primary substituents leading to the formation of flat-lying NHC2Au complexes, which have high mobility when isolated, but self-assemble into stable ordered lattices at higher surface concentrations. These and other studies of NHC surface chemistry will be crucial for the success of these next-generation monolayers.
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Affiliation(s)
- Alex Inayeh
- Department of Physics, Engineering Physics, and Astronomy, Queen's University, Kingston, ON, Canada
| | - Ryan R K Groome
- Department of Physics, Engineering Physics, and Astronomy, Queen's University, Kingston, ON, Canada
| | - Ishwar Singh
- Department of Chemistry, Queen's University, Kingston, ON, Canada
| | - Alex J Veinot
- Department of Chemistry, Queen's University, Kingston, ON, Canada
| | - Felipe Crasto de Lima
- Instituto de Física, Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brazil
- Brazilian Nanotechnology National, Laboratory, Campinas, SP, Brazil
| | - Roberto H Miwa
- Instituto de Física, Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Cathleen M Crudden
- Department of Chemistry, Queen's University, Kingston, ON, Canada.
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya, Japan.
| | - Alastair B McLean
- Department of Physics, Engineering Physics, and Astronomy, Queen's University, Kingston, ON, Canada.
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199
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Sonia, Komal, Kukreti S, Kaushik M. Gold nanoclusters: An ultrasmall platform for multifaceted applications. Talanta 2021; 234:122623. [PMID: 34364432 DOI: 10.1016/j.talanta.2021.122623] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 06/12/2021] [Accepted: 06/14/2021] [Indexed: 01/22/2023]
Abstract
Gold nanoclusters (Au NCs) with a core size below 2 nm form an exciting class of functional nano-materials with characteristic physical and chemical properties. The properties of Au NCs are more prominent and extremely different from their bulk counterparts. The synthesis of Au NCs is generally assisted by template or ligand, which impart excellent cluster stability and high quantum yield. The tunable and sensitive physicochemical properties of Au NCs open horizons for their advanced applications in various interdisciplinary fields. In this review, we briefly summarize the solution phase synthesis and origin of the characteristic properties of Au NCs. A vast review of recent research work introducing biosensors based on Au NCs has been presented along with their specifications and detection limits. This review also highlights recent progress in the use of Au NCs as bio-imaging probe, enzyme mimic, temperature sensing probe and catalysts. A speculation on present challenges and certain future prospects have also been provided to enlighten the path for advancement of multifaceted applications of Au NCs.
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Affiliation(s)
- Sonia
- Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India; Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Komal
- Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India; Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Shrikant Kukreti
- Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Mahima Kaushik
- Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India.
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200
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An estimation on the mechanical stabilities of SAMs by low energy Ar + cluster ion collision. Sci Rep 2021; 11:12772. [PMID: 34140569 PMCID: PMC8211834 DOI: 10.1038/s41598-021-92077-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 06/04/2021] [Indexed: 12/04/2022] Open
Abstract
The stability of the molecular self-assembled monolayers (SAMs) is of vital importance to the performance of the molecular electronics and their integration to the future electronics devices. Here we study the effect of electron irradiation-induced cross-linking on the stability of self-assembled monolayer of aromatic 5,5′-bis(mercaptomethyl)-2,2′-bipyridine [BPD; HS-CH2-(C5H3N)2-CH2-SH] on Au (111) single crystal surface. As a refence, we also study the properties of SAMs of electron saturated 1-dodecanethiol [C12; CH3-(CH2)11-SH] molecules. The stability of the considered SAMs before and after electron-irradiation is studied using low energy Ar+ cluster depth profiling monitored by recording the X-ray photoelectron spectroscopy (XPS) core level spectra and the UV-photoelectron spectroscopy (UPS) in the valance band range. The results indicate a stronger mechanical stability of BPD SAMs than the C12 SAMs. The stability of BPD SAMs enhances further after electron irradiation due to intermolecular cross-linking, whereas the electron irradiation results in deterioration of C12 molecules due to the saturated nature of the molecules. The depth profiling time of the cross-linked BPD SAM is more than 4 and 8 times longer than the profiling time obtained for pristine and BPD and C12 SAMs, respectively. The UPS results are supported by density functional theory calculations, which show qualitative agreement with the experiment and enable us to interpret the features in the XPS spectra during the etching process for structural characterization. The obtained results offer helpful options to estimate the structural stability of SAMs which is a key factor for the fabrication of molecular devices.
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