1
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Verdin A, Malherbe C, Eppe G. Designing SERS nanotags for profiling overexpressed surface markers on single cancer cells: A review. Talanta 2024; 276:126225. [PMID: 38749157 DOI: 10.1016/j.talanta.2024.126225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/23/2024] [Accepted: 05/06/2024] [Indexed: 06/14/2024]
Abstract
This review focuses on the chemical design and the use of Surface-Enhanced Raman Scattering (SERS)-active nanotags for measuring surface markers that can be overexpressed at the surface of single cancer cells. Indeed, providing analytical tools with true single-cell measurements capabilities is capital, especially since cancer research is increasingly leaning toward single-cell analysis, either to guide treatment decisions or to understand complex tumor behaviour including the single-cell heterogeneity and the appearance of treatment resistance. Over the past two decades, SERS nanotags have triggered significant interest in the scientific community owing their advantages over fluorescent tags, mainly because SERS nanotags resist photobleaching and exhibit sharper signal bands, which reduces possible spectral overlap and enables the discrimination between the SERS signals and the autofluorescence background from the sample itself. The extensive efforts invested in harnessing SERS nanotags for biomedical purposes, particularly in cancer research, highlight their potential as the next generation of optical labels for single-cell studies. The review unfolds in two main parts. The first part focuses on the structure of SERS nanotags, detailing their chemical composition and the role of each building block of the tags. The second part explores applications in measuring overexpressed surface markers on single-cells. The latter encompasses studies using single nanotags, multiplexed measurements, quantitative information extraction, monitoring treatment responses, and integrating phenotype measurements with SERS nanotags on single cells isolated from complex biological matrices. This comprehensive review anticipates SERS nanotags to persist as a pivotal technology in advancing single-cell analytical methods, particularly in the context of cancer research and personalized medicine.
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Affiliation(s)
- Alexandre Verdin
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, Belgium.
| | - Cedric Malherbe
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, Belgium
| | - Gauthier Eppe
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, Belgium
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2
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Ward JS, Vezzoli A, Wells C, Bailey S, Jarvis SP, Lambert CJ, Robertson C, Nichols RJ, Higgins SJ. A Systematic Study of Methyl Carbodithioate Esters as Effective Gold Contact Groups for Single-Molecule Electronics. Angew Chem Int Ed Engl 2024; 63:e202403577. [PMID: 38770763 DOI: 10.1002/anie.202403577] [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] [Received: 02/20/2024] [Revised: 05/20/2024] [Accepted: 05/21/2024] [Indexed: 05/22/2024]
Abstract
There are several binding groups used within molecular electronics for anchoring molecules to metal electrodes (e.g., R-SMe, R-NH2, R-CS2 -, R-S-). However, some anchoring groups that bind strongly to electrodes have poor/unknown stability, some have weak electrode coupling, while for some their binding motifs are not well defined. Further binding groups are required to aid molecular design and to achieve a suitable balance in performance across a range of properties. We present an in-depth investigation into the use of carbodithioate esters as contact groups for single-molecule conductance measurements, using scanning tunnelling microscopy break junction measurements (STM-BJ) and detailed surface spectroscopic analysis. We demonstrate that the methyl carbodithioate ester acts as an effective contact for gold electrodes in STM-BJ measurements. Surface enhanced Raman measurements demonstrate that the C=S functionality remains intact when adsorbed on to gold nanoparticles. A gold(I) complex was also synthesised showing a stable C=S→AuI interaction from the ester. Comparison with a benzyl thiomethyl ether demonstrates that the C=S moiety significantly contributes to charge transport in single-molecule junctions. The overall performance of the CS2Me group demonstrates it should be used more extensively and has strong potential for the fabrication of larger area devices with long-term stability.
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Affiliation(s)
- Jonathan S Ward
- Department of Chemistry, University of Liverpool, Crown St., Liverpool, L69 7ZD, UK
- Chemistry Department, Lancaster University, Bailrigg, Lancaster, LA1 4YB, UK
| | - Andrea Vezzoli
- Department of Chemistry, University of Liverpool, Crown St., Liverpool, L69 7ZD, UK
| | - Charlie Wells
- Physics Department, Lancaster University, Bailrigg, Lancaster, LA1 4YW, UK
| | - Steven Bailey
- Physics Department, Lancaster University, Bailrigg, Lancaster, LA1 4YW, UK
| | - Samuel P Jarvis
- Physics Department, Lancaster University, Bailrigg, Lancaster, LA1 4YW, UK
| | - Colin J Lambert
- Physics Department, Lancaster University, Bailrigg, Lancaster, LA1 4YW, UK
| | - Craig Robertson
- Department of Chemistry, University of Liverpool, Crown St., Liverpool, L69 7ZD, UK
| | - Richard J Nichols
- Department of Chemistry, University of Liverpool, Crown St., Liverpool, L69 7ZD, UK
| | - Simon J Higgins
- Department of Chemistry, University of Liverpool, Crown St., Liverpool, L69 7ZD, UK
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3
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Verdin A, Malherbe C, Sloan-Dennison S, Faulds K, Graham D, Eppe G. Thiol-polyethylene glycol-folic acid (HS-PEG-FA) induced aggregation of Au@Ag nanoparticles: A SERS and extinction UV-Vis spectroscopy combined study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 322:124848. [PMID: 39032228 DOI: 10.1016/j.saa.2024.124848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 07/15/2024] [Accepted: 07/17/2024] [Indexed: 07/23/2024]
Abstract
Plasmonic colloidal nanoparticles (NPs) functionalised with polymers are widely employed in diverse applications, offering advantages demonstrated over non-functionalised NPs such as enhanced colloidal stability or increased biocompatibility. However, functionalisation with polymers does not always increase the stability of the colloidal system. This work explores the intricate relationship between the functionalisation of plasmonic core@shell Au@Ag nanoparticles (NPs) with thiol-polyethylene glycol-folic acid (HS-PEG-FA) polymer chains and the resulting stability and spectral characteristics of Surface-Enhanced Raman Scattering (SERS) nanotags based on these NPs. We demonstrate that varying levels of HS-PEG-FA grafting influence nanotag stability, with a low level of grafting causing aggregation and subsequently affecting the spectral signature of Raman-reporter molecules attached to the surface of the NP. Electrostatic destabilisation is identified as the primary mechanism driving aggregation, impacting the SERS spectrum of Malachite Green isothiocyanate (MGITC) whose spectral shape is different between the aggregated and non-aggregated NPs. The findings provide valuable insights into NPs stability under different conditions, offering essential considerations for the design and optimisation of SERS nanotags in bio-analytical applications, particularly those involving data processing based on spectral shape, such as in multiplex approaches where experimental spectra are decomposed with several reference components.
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Affiliation(s)
- Alexandre Verdin
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, Belgium.
| | - Cedric Malherbe
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, Belgium
| | - Sian Sloan-Dennison
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow G1 1RD, UK
| | - Karen Faulds
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow G1 1RD, UK
| | - Duncan Graham
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow G1 1RD, UK
| | - Gauthier Eppe
- Mass Spectrometry Laboratory, MolSys Research Unit, University of Liège, Belgium
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4
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Amirtharaj S, Xie Z, Si Yu See J, Rolleri G, Malchow K, Chen W, Bouhelier A, Lörtscher E, Galland C. Light Emission and Conductance Fluctuations in Electrically Driven and Plasmonically Enhanced Molecular Junctions. ACS PHOTONICS 2024; 11:2388-2396. [PMID: 38911841 PMCID: PMC11191743 DOI: 10.1021/acsphotonics.4c00291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 05/17/2024] [Accepted: 05/17/2024] [Indexed: 06/25/2024]
Abstract
Electrically connected and plasmonically enhanced molecular junctions combine the optical functionalities of high field confinement and enhancement (cavity function), and of high radiative efficiency (antenna function) with the electrical functionalities of molecular transport. Such combined optical and electrical probes have proven useful for the fundamental understanding of metal-molecule contacts and contribute to the development of nanoscale optoelectronic devices including ultrafast electronics and nanosensors. Here, we employ a self-assembled metal-molecule-metal junction with a nanoparticle bridge to investigate correlated fluctuations in conductance and tunneling-induced light emission at room temperature. Despite the presence of hundreds of molecules in the junction, the electrical conductance and light emission are both highly sensitive to atomic-scale fluctuations-a phenomenology reminiscent of picocavities observed in Raman scattering and of luminescence blinking from photoexcited plasmonic junctions. Discrete steps in conductance associated with fluctuating emission intensities through the multiple plasmonic modes of the junction are consistent with a finite number of randomly localized, point-like sources dominating the optoelectronic response. Contrasting with these microscopic fluctuations, the overall plasmonic and electronic functionalities of our devices feature long-term survival at room temperature and under an electrical bias of a few volts, allowing for measurements over several months.
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Affiliation(s)
- Sakthi
Priya Amirtharaj
- Institute
of Physics, Ecole Polytechnique Fédérale
de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Zhiyuan Xie
- Institute
of Physics, Ecole Polytechnique Fédérale
de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Josephine Si Yu See
- Institute
of Physics, Ecole Polytechnique Fédérale
de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Gabriele Rolleri
- Institute
of Physics, Ecole Polytechnique Fédérale
de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Konstantin Malchow
- Institute
of Physics, Ecole Polytechnique Fédérale
de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Wen Chen
- Institute
of Physics, Ecole Polytechnique Fédérale
de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Alexandre Bouhelier
- Laboratoire
Interdisciplinaire Carnot de Bourgogne CNRS UMR 6303, Université de Bourgogne, 21000 Dijon, France
| | - Emanuel Lörtscher
- IBM
Research Europe—Zurich, Säumerstrasse 4, CH-8803 Rüschlikon, Switzerland
| | - Christophe Galland
- Institute
of Physics, Ecole Polytechnique Fédérale
de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
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5
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Li S, Li NN, Dong XY, Zang SQ, Mak TCW. Chemical Flexibility of Atomically Precise Metal Clusters. Chem Rev 2024; 124:7262-7378. [PMID: 38696258 DOI: 10.1021/acs.chemrev.3c00896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2024]
Abstract
Ligand-protected metal clusters possess hybrid properties that seamlessly combine an inorganic core with an organic ligand shell, imparting them exceptional chemical flexibility and unlocking remarkable application potential in diverse fields. Leveraging chemical flexibility to expand the library of available materials and stimulate the development of new functionalities is becoming an increasingly pressing requirement. This Review focuses on the origin of chemical flexibility from the structural analysis, including intra-cluster bonding, inter-cluster interactions, cluster-environments interactions, metal-to-ligand ratios, and thermodynamic effects. In the introduction, we briefly outline the development of metal clusters and explain the differences and commonalities of M(I)/M(I/0) coinage metal clusters. Additionally, we distinguish the bonding characteristics of metal atoms in the inorganic core, which give rise to their distinct chemical flexibility. Section 2 delves into the structural analysis, bonding categories, and thermodynamic theories related to metal clusters. In the following sections 3 to 7, we primarily elucidate the mechanisms that trigger chemical flexibility, the dynamic processes in transformation, the resultant alterations in structure, and the ensuing modifications in physical-chemical properties. Section 8 presents the notable applications that have emerged from utilizing metal clusters and their assemblies. Finally, in section 9, we discuss future challenges and opportunities within this area.
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Affiliation(s)
- Si Li
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Na-Na Li
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China
| | - Xi-Yan Dong
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China
| | - Shuang-Quan Zang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Thomas C W Mak
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, SAR 999077, China
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6
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Stoeckel MA, Feng K, Yang CY, Liu X, Li Q, Liu T, Jeong SY, Woo HY, Yao Y, Fahlman M, Marks TJ, Sharma S, Motta A, Guo X, Fabiano S, Facchetti A. On-Demand Catalysed n-Doping of Organic Semiconductors. Angew Chem Int Ed Engl 2024:e202407273. [PMID: 38770935 DOI: 10.1002/anie.202407273] [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] [Received: 04/30/2024] [Revised: 05/16/2024] [Accepted: 05/21/2024] [Indexed: 05/22/2024]
Abstract
A new approach to control the n-doping reaction of organic semiconductors is reported using surface-functionalized gold nanoparticles (f-AuNPs) with alkylthiols acting as the catalyst only upon mild thermal activation. To demonstrate the versatility of this methodology, the reaction of the n-type dopant precursor N-DMBI-H with several molecular and polymeric semiconductors at different temperatures with/without f-AuNPs, vis-à-vis the unfunctionalized catalyst AuNPs, was investigated by spectroscopic, morphological, charge transport, and kinetic measurements as well as, computationally, the thermodynamic of catalyst activation. The combined experimental and theoretical data demonstrate that while f-AuNPs is inactive at room temperature both in solution and in the solid state, catalyst activation occurs rapidly at mild temperatures (~70 °C) and the doping reaction completes in few seconds affording large electrical conductivities (~10-140 S cm-1). The implementation of this methodology enables the use of semiconductor+dopant+catalyst solutions and will broaden the use of the corresponding n-doped films in opto-electronic devices such as thin-film transistors, electrochemical transistors, solar cells, and thermoelectrics well as guide the design of new catalysts.
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Affiliation(s)
- Marc-Antoine Stoeckel
- Wallenberg Initiative Materials Science for Sustainability, ITN, Linköping University, SE-60174, Norrköping, Sweden
- n-ink AB, Bredgatan 33, SE-60221, Norrköping, Sweden
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, SE-60174, Norrköping, Sweden
| | - Kui Feng
- Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, China
| | - Chi-Yuan Yang
- n-ink AB, Bredgatan 33, SE-60221, Norrköping, Sweden
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, SE-60174, Norrköping, Sweden
| | - Xianjie Liu
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, SE-60174, Norrköping, Sweden
| | - Qifan Li
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, SE-60174, Norrköping, Sweden
| | - Tiefeng Liu
- Wallenberg Initiative Materials Science for Sustainability, ITN, Linköping University, SE-60174, Norrköping, Sweden
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, SE-60174, Norrköping, Sweden
| | - Sang Young Jeong
- Department of Chemistry, College of Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 136-713, Republic of Korea
| | - Han Young Woo
- Department of Chemistry, College of Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 136-713, Republic of Korea
| | - Yao Yao
- Department of Chemistry and the Materials Research Center, Northwestern University, Evanston, IL, 60208, USA
| | - Mats Fahlman
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, SE-60174, Norrköping, Sweden
| | - Tobin J Marks
- Department of Chemistry and the Materials Research Center, Northwestern University, Evanston, IL, 60208, USA
| | - Sakshi Sharma
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia, 30332, USA
| | - Alessandro Motta
- Dipartimento di Chimica, Università di Roma "La Sapienza", p.le A. Moro 5, Rome, I-00185, Italy
| | - Xugang Guo
- Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, China
| | - Simone Fabiano
- Wallenberg Initiative Materials Science for Sustainability, ITN, Linköping University, SE-60174, Norrköping, Sweden
- n-ink AB, Bredgatan 33, SE-60221, Norrköping, Sweden
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, SE-60174, Norrköping, Sweden
| | - Antonio Facchetti
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, SE-60174, Norrköping, Sweden
- Department of Chemistry and the Materials Research Center, Northwestern University, Evanston, IL, 60208, USA
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia, 30332, USA
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7
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Hastman DA, Oh E, Melinger JS, Green CM, Thielemann AJP, Medintz IL, Díaz SA. Smaller Gold Nanoparticles Release DNA More Efficiently During fs Laser Pulsed Optical Heating. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2303136. [PMID: 37749947 DOI: 10.1002/smll.202303136] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 09/05/2023] [Indexed: 09/27/2023]
Abstract
This work investigates the effect of plasmonic gold nanoparticle (AuNP) size on the rate of thermal release of single-stranded oligonucleotides under femtosecond (fs)-pulsed laser irradiation sources. Contrary to the theoretical predictions that larger AuNPs (50-60 nm diameter) would produce the most solution heating and fastest DNA release, it is found that smaller AuNP diameters (25 nm) lead to faster dsDNA denaturation rates. Controlling for the pulse energy fluence, AuNP concentration, DNA loading density, and the distance from the AuNP surface finds the same result. These results imply that the solution temperature increases around the AuNP during fs laser pulse optical heating may not be the only significant influence on dsDNA denaturation, suggesting that direct energy transfer from the AuNP to the DNA (phonon-phonon coupling), which is increased as AuNPs decrease in size, may play a significant role.
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Affiliation(s)
- David A Hastman
- Center for Bio/Molecular Science and Engineering, U.S. Naval Research Laboratory Code 6900, Washington, DC, 20375, USA
| | - Eunkeu Oh
- Optical Sciences Division, Code 5600, U.S. Naval Research Laboratory, Washington, DC, 20375, USA
| | - Joseph S Melinger
- Electronics Science and Technology Division, Code 6800, U.S. Naval Research Laboratory, Washington, DC, 20375, USA
| | - Christopher M Green
- Center for Bio/Molecular Science and Engineering, U.S. Naval Research Laboratory Code 6900, Washington, DC, 20375, USA
| | - Aaron J P Thielemann
- Department of Navy-US Naval Research Laboratory Historically Black Colleges and Universities/Minority Institutions Internship Program, Washington, DC, 20002, USA
| | - Igor L Medintz
- Center for Bio/Molecular Science and Engineering, U.S. Naval Research Laboratory Code 6900, Washington, DC, 20375, USA
| | - Sebastián A Díaz
- Center for Bio/Molecular Science and Engineering, U.S. Naval Research Laboratory Code 6900, Washington, DC, 20375, USA
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8
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Chen YQ, Xue MD, Li JL, Huo D, Ding HM, Ma Y. Uncovering the Importance of Ligand Mobility on Cellular Uptake of Nanoparticles: Insights from Experimental, Computational, and Theoretical Investigations. ACS NANO 2024; 18:6463-6476. [PMID: 38346263 DOI: 10.1021/acsnano.3c11982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
The cellular uptake of nanoparticles (NPs) by biological cells is an important and fundamental process in drug delivery. Previous studies reveal that the physicochemical properties of nanoparticles as well as those of functionalized ligands can both critically affect the uptake behaviors. However, the effect of the conjugation strategy (i.e., the "bond" between the ligand and the NP) on the cellular uptake is overlooked and remains largely elusive. Here, by taking the broadly employed gold nanoparticle as an example, we comprehensively assessed the relationship between the conjugation strategy and uptake behaviors by introducing three ligands with the same functional terminal but different anchoring sites. As revealed by in vitro cell experiments and multiscale molecular simulations, the uptake efficiency of gold NPs was positively correlated with the strength of the "bond" and more specifically the ligand mobility on the NP surface. Moreover, we validated the results presented above by proposing a thermodynamic theory for the wrapping of NPs with mobile ligands. Further, we also showed that the endocytic pathway of NPs was highly dependent on ligand mobility. Overall, this study uncovered a vital role of conjugation strategy in the cellular uptake and may provide useful guidelines for tailoring the biobehaviors of nanoparticles.
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Affiliation(s)
- Yuan-Qiang Chen
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, School of Physical Science and Technology, Soochow University, Suzhou 215006, China
| | - Meng-Die Xue
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Jia-Li Li
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Da Huo
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Hong-Ming Ding
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, School of Physical Science and Technology, Soochow University, Suzhou 215006, China
| | - Yuqiang Ma
- National Laboratory of Solid State Microstructures and Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
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9
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Arcos Rosero WA, Bueno Barbezan A, Daruich de Souza C, Chuery Martins Rostelato ME. Review of Advances in Coating and Functionalization of Gold Nanoparticles: From Theory to Biomedical Application. Pharmaceutics 2024; 16:255. [PMID: 38399309 PMCID: PMC10892584 DOI: 10.3390/pharmaceutics16020255] [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] [Received: 10/27/2023] [Revised: 11/27/2023] [Accepted: 01/02/2024] [Indexed: 02/25/2024] Open
Abstract
Nanoparticles, especially gold nanoparticles (Au NPs) have gained increasing interest in biomedical applications. Used for disease prevention, diagnosis and therapies, its significant advantages in therapeutic efficacy and safety have been the main target of interest. Its application in immune system prevention, stability in physiological environments and cell membranes, low toxicity and optimal bioperformances are critical to the success of engineered nanomaterials. Its unique optical properties are great attractors. Recently, several physical and chemical methods for coating these NPs have been widely used. Biomolecules such as DNA, RNA, peptides, antibodies, proteins, carbohydrates and biopolymers, among others, have been widely used in coatings of Au NPs for various biomedical applications, thus increasing their biocompatibility while maintaining their biological functions. This review mainly presents a general and representative view of the different types of coatings and Au NP functionalization using various biomolecules, strategies and functionalization mechanisms.
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10
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Liu Z, Luo L, Jin R. Visible to NIR-II Photoluminescence of Atomically Precise Gold Nanoclusters. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2309073. [PMID: 37922431 DOI: 10.1002/adma.202309073] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/23/2023] [Indexed: 11/05/2023]
Abstract
Atomically precise gold nanoclusters (NCs) have emerged as a new class of precision materials and attracted wide interest in recent years. One of the unique properties of such nanoclusters pertains to their photoluminescence (PL), for it can widely span visible to near-infrared-I and -II wavelengths (NIR-I/II), and even beyond 1700 nm by manipulating the size, structure, and composition. The current research efforts focus on the structure-PL correlation and the development of strategies for raising the PL quantum yields, which is nontrivial when moving from the visible to the near-infrared wavelengths, especially in the NIR-II regions. This review summarizes the recent progress in the field, including i) the types of PL observed in gold NCs such as fluorescence, phosphorescence, and thermally activated delayed fluorescence, as well as dual emission; ii) some effective strategies that are devised to improve the PL quantum yield (QY) of gold NCs, such as heterometal doping, surface rigidification, and core phonon engineering, with double-digit QYs for the NIR PL on the horizons; and iii) the applications of luminescent gold NCs in bioimaging, photosensitization, and optoelectronics. Finally, the remaining challenges and opportunities for future research are highlighted.
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Affiliation(s)
- Zhongyu Liu
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania, 15213, USA
| | - Lianshun Luo
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania, 15213, USA
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania, 15213, USA
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11
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Li X, Xu R, Shi L, Ni T. Design of flavonol-loaded cationic gold nanoparticles with enhanced antioxidant and antibacterial activities and their interaction with proteins. Int J Biol Macromol 2023; 253:127074. [PMID: 37769767 DOI: 10.1016/j.ijbiomac.2023.127074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 09/14/2023] [Accepted: 09/23/2023] [Indexed: 10/03/2023]
Abstract
In this work, four structurally similar flavonols (galangin, kaempferol, quercetin and myricetin) were coated on the surface of (11-mercaptoundecyl)-N,N,N-trimethylammonium bromide (MUTAB)‑gold nanoparticles (AuNPs) by two-step phase transfer and self-assembly, and the cationic MUTAB- AuNPs coated with flavonols (flavonol-MUTAB-AuNPs) were designed. Free radical scavenging and antibacterial experiments show that flavonol-MUTAB-AuNPs greatly improve the scavenging effect on DPPH, hydroxyl and superoxide anion radicals, and significantly enhance the inhibition effect on Staphylococcus aureus and Escherichia coli compared with flavonols and AuNPs. Then γ-globulin, fibrinogen, trypsin and pepsin were selected as representative proteins and their interaction with flavonol-MUTAB-AuNPs were investigated by various spectroscopic techniques. The fluorescence quenching mechanism of these four proteins by flavonol-MUTAB-AuNPs is static quenching. The binding constants Ka between them are in the range of 103 to 106. The interaction between them is endothermic, entropy-driven spontaneous process, and the main non-covalent force is the hydrophobic interaction. The effect of flavonol-MUTAB-AuNPs on the structure of the four proteins were investigated using UV-vis absorption spectra, synchronous fluorescence spectra and circular dichroism spectra. These results offer important insights into the essence of the interaction between flavonol-MUTAB-AuNPs and γ-globulin/fibrinogen/trypsin/pepsin. They will contribute to the development of safe and effective flavonol-MUTAB-AuNPs in biomedical fields.
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Affiliation(s)
- Xiangrong Li
- Department of Medical Chemistry, Key Laboratory of Medical Molecular Probes, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China.
| | - Ruonan Xu
- Department of Medical Chemistry, Key Laboratory of Medical Molecular Probes, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Li Shi
- Department of Medical Chemistry, Key Laboratory of Medical Molecular Probes, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Tianjun Ni
- Department of Medical Chemistry, Key Laboratory of Medical Molecular Probes, School of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
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12
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Xie XY, Cheng KQ, Chen WK, Li W, Li Q, Han J, Fang WH, Cui G. Near-Infrared Dual-Emission of a Thiolate-Protected Au 42 Nanocluster: Excited States, Nonradiative Rates, and Mechanism. J Phys Chem Lett 2023; 14:10025-10031. [PMID: 37906639 DOI: 10.1021/acs.jpclett.3c02683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
Both DFT and TD-DFT methods are used to elaborate on the excited-state properties and dual-emission mechanism of a thiolate-protected Au42 nanocluster. A three-state model (S0, S1, and T1) is proposed with respect to the results. The intersystem crossing (ISC) process from S1 to T1 benefits from a small reorganization energy due to the similar geometric structures of S1 and T1. However, the ISC process is suppressed by relatively small spin-orbit coupling resulting from the similarity of the electronic structures of S1 and T1. As a result of the counterbalance, the ISC rate is comparable with the fluorescence emission rate. In the T1 state, the phosphorescence emission prevails the reverse ISC process back to the S1 state. Taken together, fluorescence and phosphorescence are achieved simultaneously. The present work provides deep mechanistic insights to aid the rational design of NIR dual-emissive metal nanoclusters.
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Affiliation(s)
- Xiao-Ying Xie
- The Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Ke-Qin Cheng
- The Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Wen-Kai Chen
- College of Chemistry and Materials Science, Hebei Key Laboratory of Inorganic Nano-Materials, Hebei Normal University, Shijiazhuang 050024, China
| | - Wenzuo Li
- The Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Qingzhong Li
- The Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Juan Han
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Wei-Hai Fang
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
- Hefei National Laboratory, Hefei 230088, China
| | - Ganglong Cui
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
- Hefei National Laboratory, Hefei 230088, China
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13
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Liu Z, Zhou M, Luo L, Wang Y, Kahng E, Jin R. Elucidating the Near-Infrared Photoluminescence Mechanism of Homometal and Doped M 25(SR) 18 Nanoclusters. J Am Chem Soc 2023; 145:19969-19981. [PMID: 37642696 PMCID: PMC10510323 DOI: 10.1021/jacs.3c06543] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Indexed: 08/31/2023]
Abstract
More than a decade of research on the photoluminescence (PL) of classic Au25(SR)18 and its doped nanoclusters (NCs) still leaves many fundamental questions unanswered due to the complex electron dynamics. Here, we revisit the homogold Au25 (ligands omitted hereafter) and doped NCs, as well as the Ag25 and doped ones, for a comparative study to disentangle the influencing factors and elucidate the PL mechanism. We find that the strong electron-vibration coupling in Au25 leads to weak PL in the near-infrared region (∼1000 nm, quantum yield QY = 1% in solution at room temperature). Heteroatom doping of Au25 with a single Cd or Hg atom strengthens the coupling of the exciton with staple vibrations but reduces the coupling with the core breathing and quadrupolar modes. The QYs of the three MAu24 NCs (M = Hg, Au, and Cd) follow a linear relation with their PL lifetimes, suggesting a mechanism of suppressed nonradiative decay in PL enhancement. In contrast, the weaker electron-vibration coupling in Ag25 leads to higher PL (QY = 3.5%), and single Au atom doping further leads to a 5× enhancement of the radiative rate and a suppression of nonradiative decay rate (i.e., twice the PL lifetime of Ag25) in AuAg24 (hence, QY 35%), but doping more Au atoms results in gold distribution to staple motifs and thus triggering of strong electron-vibration coupling as in the MAu24 NCs, hence, counteracting the radiative enhancement effect and giving rise to only 5% QY for AuxAg25-x (x = 3-10). The obtained insights will provide guidance for the design of metal NCs with high PL for lighting, sensing, and optoelectronic applications.
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Affiliation(s)
- Zhongyu Liu
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Meng Zhou
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Lianshun Luo
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Yitong Wang
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Ellen Kahng
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
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14
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Zhao J, Ziarati A, Rosspeintner A, Wang Y, Bürgi T. Engineering ligand chemistry on Au 25 nanoclusters: from unique ligand addition to precisely controllable ligand exchange. Chem Sci 2023; 14:7665-7674. [PMID: 37476726 PMCID: PMC10355100 DOI: 10.1039/d3sc01177a] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 06/14/2023] [Indexed: 07/22/2023] Open
Abstract
Au25 nanoclusters (NCs) protected by 18 thiol-ligands (Au25SR18, SR is a thiolate ligand) are the prototype of atomically precise thiolate-protected gold NCs. Studies concerning the alteration of the number of surface ligands for a given Au25SR18 NC are scarce. Herein we report the conversion of hydrophobic Au25PET18 (PET = 2-phenylethylthiolate) NCs to Au25SR19 [Au25PET18(metal complex)1] induced by ligand exchange reactions (LERs) with thiolated terpyridine-metal complexes (metal complex, metal = Ru, Fe, Co, Ni) under mild conditions (room temperature and low amounts of incoming ligands). Interestingly, we found that the ligand addition reaction on Au25PET18 NCs is metal dependent. Ru and Co complexes preferentially lead to the formation of Au25SR19 whereas Fe and Ni complexes favor ligand exchange reactions. High-resolution electrospray ionization mass spectrometry (HRESI-MS) was used to determine the molecular formula of Au25SR19 NCs. The photophysical properties of Au25PET18(Ru complex)1 are distinctly different from Au25PET18. The absorption spectrum is drastically changed upon addition of the extra ligand and the photoluminescence quantum yield of Au25PET18(Ru complex)1 is 14 times and 3 times higher than that of pristine Au25PET18 and Au25PET17(Ru complex)1, respectively. Interestingly, only one surface ligand (PET) could be substituted by the metal complex when neutral Au25PET18 was used for ligand exchange whereas two ligands could be exchanged when starting with negatively charged Au25PET18. This charge dependence provides a strategy to precisely control the number of exchanged ligands at the surface of NCs.
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Affiliation(s)
- Jiangtao Zhao
- Department of Physical Chemistry, University of Geneva 30 Quai Ernest-Ansermet 1211 Geneva 4 Switzerland
| | - Abolfazl Ziarati
- Department of Physical Chemistry, University of Geneva 30 Quai Ernest-Ansermet 1211 Geneva 4 Switzerland
| | - Arnulf Rosspeintner
- Department of Physical Chemistry, University of Geneva 30 Quai Ernest-Ansermet 1211 Geneva 4 Switzerland
| | - Yanan Wang
- Department of Chemical Engineering, University of Michigan Ann Arbor 2800 MI USA
| | - Thomas Bürgi
- Department of Physical Chemistry, University of Geneva 30 Quai Ernest-Ansermet 1211 Geneva 4 Switzerland
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15
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Frickenstein AN, Mukherjee S, Harcourt T, He Y, Sheth V, Wang L, Malik Z, Wilhelm S. Quantification of monodisperse and biocompatible gold nanoparticles by single-particle ICP-MS. Anal Bioanal Chem 2023; 415:4353-4366. [PMID: 36670192 PMCID: PMC10645370 DOI: 10.1007/s00216-023-04540-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/03/2023] [Accepted: 01/11/2023] [Indexed: 01/21/2023]
Abstract
Bioanalytical and biomedical applications often require nanoparticles that exhibit narrow size distributions and biocompatibility. Here, we demonstrate how different synthesis methods affect gold nanoparticle (AuNPs) monodispersity and cytotoxicity. Using single particle inductively coupled plasma mass spectrometry (SP-ICP-MS), we found that the size distribution of AuNPs synthesized with a cetyltrimethylammonium chloride (CTAC) cap was significantly improved compared to AuNPs synthesized with citrate capping agents. We determined an up to 4× decrease in the full width at half maximum (FWHM) value of the normal distributions of AuNP diameter and up to a 12% decrease in relative standard deviation (RSD). While the CTAC-capped AuNPs exhibit narrow nanoparticle size distributions, they are cytotoxic, which limits safe and effective bioanalytical and biomedical applications. We sought to impart biocompatibility to CTAC-capped AuNPs through a PEGylation-based surface ligand exchange. We developed a unique ligand exchange method driven by physical force. We demonstrated the successful PEGylation using various PEG derivatives and used these PEGylated nanoparticles to further bioconjugate nucleic acids and peptides. Using cell viability quantification, we confirmed that the monodisperse PEGylated AuNPs were biocompatible. Our monodisperse and biocompatible nanoparticles may advance safe and effective bioanalytical and biomedical applications of nanomaterials.
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Affiliation(s)
- Alex N Frickenstein
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK, 73019, USA
| | - Shirsha Mukherjee
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK, 73019, USA
| | - Tekena Harcourt
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK, 73019, USA
| | - Yuxin He
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK, 73019, USA
| | - Vinit Sheth
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK, 73019, USA
| | - Lin Wang
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK, 73019, USA
| | - Zain Malik
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK, 73019, USA
| | - Stefan Wilhelm
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK, 73019, USA.
- Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, USA.
- Institute for Biomedical Engineering, Science, and Technology (IBEST), University of Oklahoma, Norman, OK, 73019, USA.
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16
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Palicha KA, Loganathan P, Sudha V, Harinipriya S. Monte Carlo simulation and experimental validation of plant microtubules cathode in biodegradable battery. Sci Rep 2023; 13:10393. [PMID: 37369685 DOI: 10.1038/s41598-023-36902-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
For the first time, electrochemical methods are utilized to study the response of tubulin monomers (extracted from plant source such as Green Peas: Arachis Hypogea) towards charge perturbations in the form of conductivity, conformational changes via self-assembly and adsorption on Au surface. The obtained dimerization and surface adsorption energetics of the tubulins from Cyclic Voltammetry agree well with the literature value of 6.9 and 14.9 kCal/mol for lateral and longitudinal bond formation energy respectively. In addition to the effects of charge perturbations on change in structure, ionic and electronic conductivity of tubulin with increasing load are investigated and found to be 1.25 Sm-1 and 2.89 mSm-1 respectively. The electronic conductivity is 1.93 times higher than the literature value of 1.5 mSm-1, demonstrating the fact that the microtubules (dimer of tubulins, MTs) from plant source can be used as a semiconductor electrode material in energy conversion and storage applications. Thus, motivated by the Monte Carlo simulation and electrochemical results the MTs extracted from plant source are used as cathode material for energy storage device such as Bio-battery and the Galvanostatic Charge/Discharge studies are carried out in coin cell configuration. The configuration of the bio-battery cell is as follows: Al/CB//PP-1M KCl//MTs/SS; where SS and Al are used as current collectors for cathode and anode respectively, Polypropylene (PP) membrane soaked in 1M KCl as electrolyte and Carbon Black (CB) is the anode material. Another configuration of the cell would be replacement of CB by biopolymer such as ethyl cellulose anode (Al/EC/PP-1M KCl/MTs/SS).
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Affiliation(s)
- Kaushik A Palicha
- Research and Development Center, Ram Charan Co Pvt Ltd - Entity1, Chennai, Tamilnadu, 600 002, India
| | - Pavithra Loganathan
- Department of Physics and Nanotechnology, SRMIST, Kattankulathur, Chennai, Tamilnadu, 603203, India
| | - V Sudha
- Department of Chemistry, SRMIST, Kattankulathur, Chennai, Tamilnadu, 603203, India.
| | - S Harinipriya
- Research and Development Center, Ram Charan Co Pvt Ltd - Entity1, Chennai, Tamilnadu, 600 002, India.
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17
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Satta M, Zema N, Turchini S, Franchi S, Contini G, Ciavardini A, Grazioli C, Coreno M, de Simone M, Tomellini M, Piccirillo S. Adsorption and Dissociation of R-Methyl p-Tolyl Sulfoxide on Au(111). ACS OMEGA 2023; 8:16471-16478. [PMID: 37179596 PMCID: PMC10173319 DOI: 10.1021/acsomega.3c01647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 03/29/2023] [Indexed: 05/15/2023]
Abstract
Sulfur-based molecules producing self-assembled monolayers on gold surfaces have long since become relevant functional molecular materials with many applications in biosensing, electronics, and nanotechnology. Among the various sulfur-containing molecules, the possibility to anchor a chiral sulfoxide to a metal surface has been scarcely investigated, despite this class of molecules being of great importance as ligands and catalysts. In this work, (R)-(+)-methyl p-tolyl sulfoxide was deposited on Au(111) and investigated by means of photoelectron spectroscopy and density functional theory calculations. The interaction with Au(111) leads to a partial dissociation of the adsorbate due to S-CH3 bond cleavage. The observed kinetics support the hypotheses that (R)-(+)-methyl p-tolyl sulfoxide adsorbs on Au(111) in two different adsorption arrangements endowed with different adsorption and reaction activation energies. The kinetic parameters related to the adsorption/desorption and reaction of the molecule on the Au(111) surface have been estimated.
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Affiliation(s)
- Mauro Satta
- Istituto
per lo studio dei Materiali Nanostrutturati-CNR (ISMN-CNR), Department
of Chemistry, Sapienza University of Rome, P. le Aldo Moro 5, 00185 Rome, Italy
| | - Nicola Zema
- Istituto
di Struttura della Materia-CNR (ISM-CNR), Via Fosso del Cavaliere 100, 00133 Rome, Italy
| | - Stefano Turchini
- Istituto
di Struttura della Materia-CNR (ISM-CNR), Via Fosso del Cavaliere 100, 00133 Rome, Italy
| | - Stefano Franchi
- Istituto
di Struttura della Materia-CNR (ISM-CNR), Via Fosso del Cavaliere 100, 00133 Rome, Italy
| | - Giorgio Contini
- Istituto
di Struttura della Materia-CNR (ISM-CNR), Via Fosso del Cavaliere 100, 00133 Rome, Italy
- Dipartimento
di Fisica, Università di Roma “Tor
Vergata”, Via
della Ricerca Scientifica, 00133 Rome, Italy
| | - Alessandra Ciavardini
- University
of Nova Gorica, SI-5001 Nova Gorica, Slovenia
- Istituto
di Struttura della Materia-CNR (ISM-CNR), Basovizza Area Science Park, 34149 Trieste, Italy
| | - Cesare Grazioli
- Istituto
Officina dei Materiali-CNR (IOM-CNR), Basovizza SS-14, km 163.5, 34012 Trieste, Italy
| | - Marcello Coreno
- Istituto
di Struttura della Materia-CNR (ISM-CNR), Basovizza Area Science Park, 34149 Trieste, Italy
| | - Monica de Simone
- Istituto
Officina dei Materiali-CNR (IOM-CNR), Basovizza SS-14, km 163.5, 34012 Trieste, Italy
| | - Massimo Tomellini
- Dipartimento
di Scienze e Tecnologie Chimiche, Università
di Roma “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Susanna Piccirillo
- Istituto
di Struttura della Materia-CNR (ISM-CNR), Via Fosso del Cavaliere 100, 00133 Rome, Italy
- Dipartimento
di Scienze e Tecnologie Chimiche, Università
di Roma “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
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18
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Kim JM, Kim J, Choi K, Nam JM. Plasmonic Dual-Gap Nanodumbbells for Label-Free On-Particle Raman DNA Assays. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2208250. [PMID: 36680474 DOI: 10.1002/adma.202208250] [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: 09/08/2022] [Revised: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Metal nanostructures with a tunable plasmonic gap are useful for photonics, surface-enhanced spectroscopy, biosensing, and bioimaging applications. The use of these structures as chemical and biological sensing/imaging probes typically requires an ultra-precise synthesis of the targeted nanostructure in a high yield, with Raman dye-labeling and complex assay components and procedures. Here, a plasmonic nanostructure with tunable dual nanogaps, Au dual-gap nanodumbbells (AuDGNs), is designed and synthesized via the anisotropic adsorption of polyethyleneimine on Au nanorods to facilitate tip-selective Au growths on nanorod tips for forming mushroom-shaped dumbbell-head structures at both tips and results in dual gaps (intra-head and inter-head gaps) within a single particle. AuDGNs are synthesized in a high yield (>90%) while controlling the inter-head gap size, and the average surface-enhanced Raman scattering (SERS) enhancement factor (EF) value is 7.5 × 108 with a very narrow EF distribution from 1.5 × 108 to 1.5 × 109 for >90% of analyzed particles. Importantly, AuDGNs enable label-free on-particle SERS detection assays through the diffusion of target molecules into the intraparticle gap for different DNA sequences with varying ATGC combinations in a highly specific and sensitive manner without a need for Raman dyes.
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Affiliation(s)
- Jae-Myoung Kim
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
| | - Jiyeon Kim
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
| | - Kyungin Choi
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
| | - Jwa-Min Nam
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
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19
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Khatun M, Paul S, Roy S, Dey S, Anoop A. Performance of Density Functionals and Semiempirical 3c Methods for Small Gold-Thiolate Clusters. J Phys Chem A 2023; 127:2242-2257. [PMID: 36877153 DOI: 10.1021/acs.jpca.2c07561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
In light of the recent surge in computational studies of gold thiolate clusters, we present a comparison of popular density functionals (DFAs) and three-part corrected methods (3c-methods) on their performance by taking a data set named as AuSR18 consisting of 18 isomers of Aun(SCH3)m (m ≤ n = 1-3). We have compared the efficiency and accuracy of the DFAs and 3c-methods in geometry optimization with RI-SCS-MP2 as the reference method. Similarly, the performance for accurate and efficient energy evaluation was compared with DLPNO-CCSD(T) as the reference method. The lowest energy structure among the isomers of the largest stoichiometry from our data set, AuSR18, i.e., Au3(SCH3)3, is considered to evaluate the computational time for SCF and gradient evaluations. Alongside this, the numbers of optimization steps to locate the most stable minima of Au3(SCH3)3 are compared to assess the efficiency of the methods. A comparison of relevant bond lengths with the reference geometries was made to estimate the accuracy in geometry optimization. Some methods, such as LC-BLYP, ωB97M-D3BJ, M06-2X, and PBEh-3c, could not locate many of the minima found by most of the other methods; thus, the versatility in locating various minima is also an important criterion in choosing a method for the given project. To determine the accuracy of the methods, we compared the relative energies of the isomers in each stoichiometry and the interaction energy of the gold core with the ligands. The dependence of basis set size and relativistic effects on energies are also compared. The following are some of the highlights. TPSS has shown accuracy, while mPWPW shows comparable speed and accuracy. For the relative energies of the clusters, the hybrid range-separated DFAs are the best option. CAM-B3LYP excels, whereas B3LYP performs poorly. Overall, LC-BLYP is a balanced performer considering both the geometry and relative stability of the structures, but it lacks diversity. The 3c-methods, although fast, are less impressive in relative stability.
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Affiliation(s)
- Maya Khatun
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Sayan Paul
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Saikat Roy
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Subhasis Dey
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Anakuthil Anoop
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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20
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Didier CM, Orrico JF, Cepeda Torres OS, Castro JM, Baksh A, Rajaraman S. Microfabricated polymer-metal biosensors for multifarious data collection from electrogenic cellular models. MICROSYSTEMS & NANOENGINEERING 2023; 9:22. [PMID: 36875634 PMCID: PMC9974480 DOI: 10.1038/s41378-023-00488-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 12/19/2022] [Accepted: 01/09/2023] [Indexed: 05/28/2023]
Abstract
Benchtop tissue cultures have become increasingly complex in recent years, as more on-a-chip biological technologies, such as microphysiological systems (MPS), are developed to incorporate cellular constructs that more accurately represent their respective biological systems. Such MPS have begun facilitating major breakthroughs in biological research and are poised to shape the field in the coming decades. These biological systems require integrated sensing modalities to procure complex, multiplexed datasets with unprecedented combinatorial biological detail. In this work, we expanded upon our polymer-metal biosensor approach by demonstrating a facile technology for compound biosensing that was characterized through custom modeling approaches. As reported herein, we developed a compound chip with 3D microelectrodes, 3D microfluidics, interdigitated electrodes (IDEs) and a microheater. The chip was subsequently tested using the electrical/electrochemical characterization of 3D microelectrodes with 1 kHz impedance and phase recordings and IDE-based high-frequency (~1 MHz frequencies) impedimetric analysis of differential localized temperature recordings, both of which were modeled through equivalent electrical circuits for process parameter extraction. Additionally, a simplified antibody-conjugation strategy was employed for a similar IDE-based analysis of the implications of a key analyte (l-glutamine) binding to the equivalent electrical circuit. Finally, acute microfluidic perfusion modeling was performed to demonstrate the ease of microfluidics integration into such a polymer-metal biosensor platform for potential complimentary localized chemical stimulation. Overall, our work demonstrates the design, development, and characterization of an accessibly designed polymer-metal compound biosensor for electrogenic cellular constructs to facilitate comprehensive MPS data collection.
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Affiliation(s)
- Charles M. Didier
- NanoScience Technology Center, University of Central Florida, 4353 Scorpius Street, Research I, Suite 231, FL 32816 Orlando, USA
- Burnett School of Biomedical Sciences, University of Central Florida, 6900 Lake Nona Blvd, FL 32827 Orlando, USA
| | - Julia F. Orrico
- NanoScience Technology Center, University of Central Florida, 4353 Scorpius Street, Research I, Suite 231, FL 32816 Orlando, USA
| | - Omar S. Cepeda Torres
- NanoScience Technology Center, University of Central Florida, 4353 Scorpius Street, Research I, Suite 231, FL 32816 Orlando, USA
- Department of Biomedical Engineering, Polytechnic University of Puerto Rico, 377, 00918, Ponce de Leon, San Juan, Puerto Rico
| | - Jorge Manrique Castro
- NanoScience Technology Center, University of Central Florida, 4353 Scorpius Street, Research I, Suite 231, FL 32816 Orlando, USA
- Department of Electrical and Computer Engineering, University of Central Florida, 4238 Scorpius Street, FL 32816 Orlando, USA
| | - Aliyah Baksh
- NanoScience Technology Center, University of Central Florida, 4353 Scorpius Street, Research I, Suite 231, FL 32816 Orlando, USA
| | - Swaminathan Rajaraman
- NanoScience Technology Center, University of Central Florida, 4353 Scorpius Street, Research I, Suite 231, FL 32816 Orlando, USA
- Burnett School of Biomedical Sciences, University of Central Florida, 6900 Lake Nona Blvd, FL 32827 Orlando, USA
- Department of Electrical and Computer Engineering, University of Central Florida, 4238 Scorpius Street, FL 32816 Orlando, USA
- Department of Materials Science and Engineering, University of Central Florida, 12760 Pegasus Drive, Engineering I, Suite 207, FL 32816 Orlando, USA
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21
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Zhao YY, Li Y, Cao Y, Mehl GH, Liu F, Ungar G. The Effect of Mesogenic Coronas on the Type and Anisotropy of Gold Nanoparticle Superlattices: When Can the Tail Wag the Dog? Chemistry 2023; 29:e202203673. [PMID: 36573704 DOI: 10.1002/chem.202203673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Indexed: 12/28/2022]
Abstract
The correlation between the size of nanoparticles, the structure and shape of mesogenic ligands and the ensuing assembly behaviour is not really understood. Closer inspection shows very surprising features. Here, 2- and 4-nm gold nanoparticles (NPs) were synthesized, and grafted with a forked ligand containing two rod-like mesogens in its branches: one cholesterol, the other with azobenzene. The 4-nm NPs also contained n-hexylthiol as co-ligand. They were found to form a FCC cubic superlattice, whereas the 2-nm NPs form hexagonal HCP with weak birefringence, hence with partially oriented ligands. The structures were compared with those of related systems containing a range of different azobenzene-to-cholesterol ratios, all giving body-centred tetragonal superlattices with various degrees of anisotropy. Geometric analysis is presented in terms of the asphericity of the NPs' surroundings, requirement for space-filling and structural anisotropy. Some general rules are derived to help design the soft corona around the NPs in order to obtain superlattices with the desired structure and anisotropy.
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Affiliation(s)
- Yang-Yang Zhao
- Shaanxi International Research Center for Soft Matter, State Key Laboratory for Mechanical Behaviour of Materials, Xi'an Jiaotong University, Xi An Shi, Xi'an, 710049, P. R. China
| | - Yaxin Li
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, P. R. China
| | - Yu Cao
- Shaanxi International Research Center for Soft Matter, State Key Laboratory for Mechanical Behaviour of Materials, Xi'an Jiaotong University, Xi An Shi, Xi'an, 710049, P. R. China
| | - Georg H Mehl
- Shaanxi International Research Center for Soft Matter, State Key Laboratory for Mechanical Behaviour of Materials, Xi'an Jiaotong University, Xi An Shi, Xi'an, 710049, P. R. China.,Department of Chemistry, University of Hull, Hull, HU6 7RX, UK
| | - Feng Liu
- Shaanxi International Research Center for Soft Matter, State Key Laboratory for Mechanical Behaviour of Materials, Xi'an Jiaotong University, Xi An Shi, Xi'an, 710049, P. R. China
| | - Goran Ungar
- Shaanxi International Research Center for Soft Matter, State Key Laboratory for Mechanical Behaviour of Materials, Xi'an Jiaotong University, Xi An Shi, Xi'an, 710049, P. R. China.,Department of Materials Science and Engineering, University of Sheffield, Sheffield, S1 3JD, UK
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22
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Development of a liquid-based cytology method for detecting cervical cancer cells using functional gold nanorods. KOREAN J CHEM ENG 2023. [DOI: 10.1007/s11814-022-1307-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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23
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Gong S, Wang T, Lin J, Wang L. Patterning of Polymer-Functionalized Nanoparticles with Varied Surface Mobilities of Polymers. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1254. [PMID: 36770260 PMCID: PMC9920074 DOI: 10.3390/ma16031254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/28/2023] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
The polymers can be either dynamically tethered to or permanently grafted to the nanoparticle to produce polymer-functionalized nanoparticles. The surface mobility of polymer ligands with one end anchored to the nanoparticle can affect the surface pattern, but the effect remains unclear. Here, we addressed the influence of lateral polymer mobility on surface patterns by performing self-consistent field theory calculations on a modeled polymer-functionalized nanoparticle consisting of immobile and mobile brushes. The results show that except for the radius of nanoparticles and grafting density, the fraction of mobile brushes substantially influences the surface patterning of polymer-functionalized nanoparticles, including striped patterns and patchy patterns with various patches. The number of patches on a nanoparticle increases as the fraction of mobile brushes decreases, favored by the entropy of immobile brushes. Critically, we found that broken symmetry usually occurs in patchy nanoparticles, associated with the balance of enthalpic and entropic effects. The present work provides a fundamental understanding of the dependence of surface patterning on lateral polymer mobility. The work could also guide the preparation of diversified nanopatterns, especially for the asymmetric patchy nanoparticles, enabling the fundamental investigation of the interaction between polymer-functionalized nanoparticles.
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24
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Domke KF, Aragonès AC. Playing catch and release with single molecules: mechanistic insights into plasmon-controlled nanogaps. NANOSCALE 2023; 15:497-506. [PMID: 36394540 DOI: 10.1039/d2nr05448e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Single-molecule (SM) detection is essential for investigating processes at the molecular level. Nanogap-based detection approaches have proven to be highly accurate SM capture and detection platforms in the last decade. Unfortunately, these approaches face several inherent drawbacks, such as short detection times and the effects of Brownian motion, that can hinder molecular capture. Nanogap-based SM detection approaches have been successfully coupled to optical-based setups to exploit nearfield-assisted trapping to overcome these drawbacks and thus improve SM capture and detection. Here we present the first mechanistic study of nearfield effects on SM capture and release in nanogaps, using unsupervised machine learning methods based on hidden Markov models. We show that the nearfield strength can manipulate the kinetics of the SM capture and release processes. With increasing field strength, the rate constant of the capture kinetics increase while the release kinetics decrease, favouring the former over the latter. As a result, the SM capture state is more likely and more stable than the release state above a specific threshold nearfild strength. We have also estimated the decrease in the capture free-energy profile and the increase in the release profiles to be around 5 kJ mol-1 for the laser powers employed, ranging from laser-OFF conditions to 11 mW μm-2. We envisage that our findings can be combined with the electrocatalytic capabilities of the (nearfield) nanogap to develop next-generation molecular nanoreactors. This approach will open the door to highly efficient SM catalysis with precise extended monitoring timescales facilitated through the longer residence times of the reactant trapped inside the nanogap.
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Affiliation(s)
- Katrin F Domke
- University of Duisburg-Essen, Faculty of Chemistry, Universitätsstr. 5, 45141 Essen, Germany
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
| | - Albert C Aragonès
- Departament de Ciència de Materials i Química Física, Universitat de Barcelona, Marti i Franquès 1, 08028, Barcelona, Spain
- Institut de Química Teòrica i Computacional (IQTC), Universitat de Barcelona, Diagonal 645, 08028, Barcelona, Spain.
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25
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Bhattacharjee K, Prasad BLV. Surface functionalization of inorganic nanoparticles with ligands: a necessary step for their utility. Chem Soc Rev 2023; 52:2573-2595. [PMID: 36970981 DOI: 10.1039/d1cs00876e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
The importance of protecting inorganic nanoparticles with organic ligands and thus imparting the needed stabilization as colloidal dispersions for their potential applications is highlighted in this review.
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Affiliation(s)
- Kaustav Bhattacharjee
- Physical and Materials Chemistry Division, National Chemical Laboratory (CSIR-NCL) Dr Homi Bhabha Road, Pune 411008, India.
| | - Bhagavatula L V Prasad
- Physical and Materials Chemistry Division, National Chemical Laboratory (CSIR-NCL) Dr Homi Bhabha Road, Pune 411008, India.
- Academy of Scientific and Innovation Research (AcSIR), Ghaziabad 201002, India
- Center for Nano and Soft Matter Sciences, Bangalore 562162, India
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26
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Rotem R, Giustra M, Arrigoni F, Bertolini JA, Garbujo S, Rizzuto MA, Salvioni L, Barbieri L, Bertini L, De Gioia L, Colombo M, Prosperi D. Conjugation of gold nanoparticles with multidentate surfactants for enhanced stability and biological properties. J Mater Chem B 2022; 11:61-71. [PMID: 36373865 DOI: 10.1039/d2tb01528e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This work originated from the need to functionalize surfactant-coated inorganic nanoparticles for biomedical applications, a process that is limited by excess unbound surfactant. These limitations are connected to the bioconjugation of targeting molecules that are often in equilibrium between the free aliquot in solution and that which binds the surface of the nanoparticles. The excess in solution can play a role in the biocompatability in vitro and in vivo of the final nanoparticles stock. For this purpose, we tested the ability of common surfactants - monothiolated polyethylene glycol and amphiphilic polymers - to colloidally stabilize nanoparticles as excess surfactant is removed and compared them to newly appearing multidentate surfactants endowed with high avidity for inorganic nanoparticles. Our results showed that monothiolated polyethylene glycol or amphiphilic polymers have an insufficient affinity to the nanoparticles and as the excess surfactant is removed the colloidal stability is lost, while multidentate high-avidity surfactants excel in the same regard, possibly allowing improvement in an array of nanoparticle applications, especially in those stated.
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Affiliation(s)
- Rany Rotem
- Department of Biotechnology and Bioscience, University of Milano-Bicocca, Piazza della Scienza 2, 20126, Milano, Italy.
| | - Marco Giustra
- Department of Biotechnology and Bioscience, University of Milano-Bicocca, Piazza della Scienza 2, 20126, Milano, Italy.
| | - Federica Arrigoni
- Department of Biotechnology and Bioscience, University of Milano-Bicocca, Piazza della Scienza 2, 20126, Milano, Italy.
| | - Jessica A Bertolini
- Department of Biotechnology and Bioscience, University of Milano-Bicocca, Piazza della Scienza 2, 20126, Milano, Italy.
| | - Stefania Garbujo
- Department of Biotechnology and Bioscience, University of Milano-Bicocca, Piazza della Scienza 2, 20126, Milano, Italy.
| | - Maria A Rizzuto
- Department of Biotechnology and Bioscience, University of Milano-Bicocca, Piazza della Scienza 2, 20126, Milano, Italy.
| | - Lucia Salvioni
- Department of Biotechnology and Bioscience, University of Milano-Bicocca, Piazza della Scienza 2, 20126, Milano, Italy.
| | - Linda Barbieri
- Department of Biotechnology and Bioscience, University of Milano-Bicocca, Piazza della Scienza 2, 20126, Milano, Italy.
| | - Luca Bertini
- Department of Biotechnology and Bioscience, University of Milano-Bicocca, Piazza della Scienza 2, 20126, Milano, Italy.
| | - Luca De Gioia
- Department of Biotechnology and Bioscience, University of Milano-Bicocca, Piazza della Scienza 2, 20126, Milano, Italy.
| | - Miriam Colombo
- Department of Biotechnology and Bioscience, University of Milano-Bicocca, Piazza della Scienza 2, 20126, Milano, Italy.
| | - Davide Prosperi
- Department of Biotechnology and Bioscience, University of Milano-Bicocca, Piazza della Scienza 2, 20126, Milano, Italy.
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27
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Liu Z, Li Y, Kahng E, Xue S, Du X, Li S, Jin R. Tailoring the Electron-Phonon Interaction in Au 25(SR) 18 Nanoclusters via Ligand Engineering and Insight into Luminescence. ACS NANO 2022; 16:18448-18458. [PMID: 36252530 DOI: 10.1021/acsnano.2c06586] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Understanding the electron-phonon interaction in Au nanoclusters (NCs) is essential for enhancing and tuning their photoluminescence (PL) properties. Among all the methods, ligand engineering is the most straightforward and facile one to design Au NCs with the desired PL properties. However, a systematic understanding of the ligand effects toward electron-phonon interactions in Au NCs is still missing. Herein, we synthesized four Au25(SR)18- NCs protected by different -SR ligands and carefully examined their temperature-dependent band-gap renormalization behavior. Data analysis by a Bose-Einstein two-oscillator model revealed a suppression of high-frequency optical phonons in aromatic-ligand-protected Au25 NCs. Meanwhile, a low-frequency breathing mode and a quadrupolar mode are attributed as the main contributors to the phonon-assisted nonradiative relaxation pathway in aromatic-ligand-protected Au25 NCs, which is in contrast with non-aromatic-ligand-protected Au25 NCs, in which tangential and radial modes play the key roles. The PL measurements of the four Au25 NCs showed that the suppression of optical phonons led to higher quantum yields in aromatic-ligand-protected Au25 NCs. Cryogenic PL measurements provide insights into the nonradiative energy relaxation, which should be further investigated for a full understanding of the PL mechanism in Au25 NCs.
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Affiliation(s)
- Zhongyu Liu
- Department of Chemistry, Carnegie Mellon University, PittsburghPennsylvania15213, United States
| | - Yingwei Li
- Department of Chemistry, Carnegie Mellon University, PittsburghPennsylvania15213, United States
| | - Ellen Kahng
- Department of Chemistry, Carnegie Mellon University, PittsburghPennsylvania15213, United States
| | - Shan Xue
- Department of Chemistry, Carnegie Mellon University, PittsburghPennsylvania15213, United States
| | - Xiangsha Du
- Department of Chemistry, Carnegie Mellon University, PittsburghPennsylvania15213, United States
| | - Site Li
- Department of Chemistry, Carnegie Mellon University, PittsburghPennsylvania15213, United States
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, PittsburghPennsylvania15213, United States
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28
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Spectroscopic characterization and in vitro studies of biological activity of bradykinin derivatives. Sci Rep 2022; 12:19015. [PMID: 36348016 PMCID: PMC9643506 DOI: 10.1038/s41598-022-23448-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 10/31/2022] [Indexed: 11/10/2022] Open
Abstract
Eleven multiple analogs of bradykinin-a peptide that is a natural ligand of B1 and B2 receptors but does not bind or activate the B1 receptor unless Arg9 is removed from the sequence by the action of carboxypeptidase N-were synthesized. Their biological activity was examined on T-REx cell lines expressing B1 or B2 receptors using the intracellular IP1 assay. The mRNA expression of B1R and B2R in the lysate of tumor cell lines, e.g., U87-MG (human astrocytoma), SHP-77 (human small cell lung cancer), and H4 (human brain glioma), was determined. For five B1R antagonists, adsorption at the liquid/solid interface (Au nanoparticles (AuNPs) served as the solid surface) was discussed in terms of the vibrations of molecular fragments (structural factors) responsible for the biological properties of these analogs.
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29
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Laird M, Herrmann N, Carcel C, Trens P, Oliviero E, Toquer G, Le Parc R, Bantignies JL, Bartlett JR, Wong Chi Man M. Mesoporous organosilicas with thiol functionalised pores: multifunctional dendrimers as sacrificial building block and template. NANOSCALE 2022; 14:15617-15634. [PMID: 36070553 DOI: 10.1039/d2nr03097g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The synthesis of multifunctional poly(amidoamine) (PAMAM)-based dendrimers containing a cleavable disulfide linker within each arm of the dendrimer, together with condensable triethoxysilyl groups on the periphery of the dendrimer, is described. The dendrimers were mixed with 1,4-bis(triethoxysilyl)benzene and subsequently transformed into silsesquioxane gels or periodic mesoporous organosilicas (PMOs) to generate materials with dendrimers covalently embedded within the interior of the silsesquioxane networks. Subsequent treatment of the gels with dithiothreitol enabled the core of the dendrimers to be selectively cleaved at the disulfide site, thus generating thiol functions localised within the pores. The effect of different dendrimer generations on the reactivity of the pendant thiol functions was probed by impregnation with gold salts, which were reduced to obtain gold nanoparticles within the pore networks of the gels and PMOs. The gels yielded polydisperse gold nanoparticles (2 to 70 nm) with dimensions modulated by the generation of the dendrimer, together with well-defined gold/thiolate clusters with Au⋯S distances of 2.3 Å. Such clusters were also observed in the PMO system, together with monodispersed gold nanoparticles with diameters comparable to that of the organised pores in the PMO. The role of surface functionalisation in controlling the formation of gold clusters and/or nanoparticles is discussed.
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Affiliation(s)
- Mathilde Laird
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France.
| | | | - Carole Carcel
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France.
| | - Philippe Trens
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France.
| | | | | | - Rozenn Le Parc
- Laboratoire Charles Coulomb (L2C), CNRS-Univ. Montpellier, Montpellier, France
| | | | - John R Bartlett
- Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.
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30
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Giulia Bordoni P, Colherinhas G. On the influence of increasing the concentration of Au144(SRCOO1-)60 nanoparticles in water/Na1+ solution using molecular dynamics simulations. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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31
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Gangwar R, Rao KT, Khatun S, Rengan AK, Subrahmanyam C, Krishna Vanjari SR. Label-free miniaturized electrochemical nanobiosensor triaging platform for swift identification of the bacterial type. Anal Chim Acta 2022; 1233:340482. [DOI: 10.1016/j.aca.2022.340482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 08/21/2022] [Accepted: 10/02/2022] [Indexed: 11/01/2022]
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32
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Mishra S, Kachhawa P, Jain AK, Thakur RR, Chaturvedi N. High sensitivity label-free detection of HER2 using an Al-GaN/GaN high electron mobility transistor-based biosensor. LAB ON A CHIP 2022; 22:4129-4140. [PMID: 36129428 DOI: 10.1039/d2lc00349j] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This work reports rapid, label-free and specific detection of the HER2 antigen using a gallium nitride (GaN) high electron mobility transistor (HEMT). Thiol-based chemistry has been utilized to immobilize the corresponding HER2 antibody in the sensing area of the sensor. The formation of a gold-sulfur complex has been confirmed through Raman spectroscopy, giving a peak at around a wavelength of 260 cm-1. Fourier transform infrared spectroscopy and atomic force microscopy (AFM) also reveal the functionalization of thiol and free carboxylic groups. On-chip enzyme-linked immunosorbent assay has been utilized to confirm immobilization of antibody receptors on the sensing area surface, followed by current-voltage measurement. Morphology of the sensing area using AFM and electrical characterization of the sensor have been recorded before and after each functionalization process step. The sensor shows detection of the HER2 antigen in a broad range of 0.7 pg ml-1 to 10 μg ml-1i.e., (5 × 10-15 to 6 × 10-8 M). A long-time study and reusability aspect of the sensor have also been investigated that show good viability of the sensor. For the first time, a three-binding-site model based on the Langmuir isotherm has been developed for HER2 detection using GaN-HEMTs with three dissociation constants, i.e., 7 × 10-10, 8.8 × 10-11, and 7.2 × 10-9 M, respectively.
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Affiliation(s)
- Shivanshu Mishra
- CSIR - Central Electronics Engineering Research Institute, Pilani, Rajasthan, India.
- Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh, India
| | - Pharyanshu Kachhawa
- CSIR - Central Electronics Engineering Research Institute, Pilani, Rajasthan, India.
- Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh, India
| | - Amber Kumar Jain
- CSIR - Central Electronics Engineering Research Institute, Pilani, Rajasthan, India.
| | - Rajiv Ranjan Thakur
- CSIR - Central Electronics Engineering Research Institute, Pilani, Rajasthan, India.
- Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh, India
| | - Nidhi Chaturvedi
- CSIR - Central Electronics Engineering Research Institute, Pilani, Rajasthan, India.
- Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh, India
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33
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Luo L, Liu Z, Du X, Jin R. Near-Infrared Dual Emission from the Au 42(SR) 32 Nanocluster and Tailoring of Intersystem Crossing. J Am Chem Soc 2022; 144:19243-19247. [PMID: 36239690 DOI: 10.1021/jacs.2c09107] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This work presents the synthesis and intriguing photoluminescence of the Au42(PET)32 (PET = 2-phenylethanethiolate) nanocluster (NC). The Au42(PET)32 NC exhibits dual emission at 875 and 1040 nm, which are revealed to be fluorescence and phosphorescence, respectively. The emission quantum yield (QY) of Au42(PET)32 in dichloromethane is 11.9% at room temperature in air, which is quite rare for thiolate-protected Au NCs. When Au42(PET)32 NCs are embedded in polystyrene films (solid state), the fluorescence was dramatically suppressed while the phosphorescence was significantly enhanced. This divergent behavior is explained by dipolar interaction-induced enhancement of intersystem crossing from singlet to triplet excited state.
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Affiliation(s)
- Lianshun Luo
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania15213, United States
| | - Zhongyu Liu
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania15213, United States
| | - Xiangsha Du
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania15213, United States
| | - Rongchao Jin
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania15213, United States
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34
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Organometallic hotspot engineering for ultrasensitive EC-SERS detection of pathogenic bacteria-derived DNAs. Biosens Bioelectron 2022; 210:114325. [DOI: 10.1016/j.bios.2022.114325] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 04/04/2022] [Accepted: 04/23/2022] [Indexed: 11/18/2022]
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35
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Minoda A, Miyashita SI, Fujii SI, Inagaki K, Takahashi Y. Cell population behavior of the unicellular red alga Galdieria sulphuraria during precious metal biosorption. JOURNAL OF HAZARDOUS MATERIALS 2022; 432:128576. [PMID: 35313161 DOI: 10.1016/j.jhazmat.2022.128576] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 02/18/2022] [Accepted: 02/23/2022] [Indexed: 06/14/2023]
Abstract
This study investigates the biosorption mechanism, including cell population behavior, of trace amounts of precious metals (gold, palladium, and platinum) in a unicellular red alga, Galdieria sulphuraria. Single-cell inductively coupled plasma mass spectrometry showed that the number of adsorbing cells and the concentration of adsorbed metal per cell varied depending on solution acidity and metal species. The X-ray absorption fine structure in 5 mM HCl solution indicated that the adsorbed Au formed inner-sphere complexes with S, whereas the adsorbed Pd and Pt formed an inner-sphere complexes with N and/or S. In 500 mM HCl solution, the adsorbed Au and Pd formed inner-sphere complexes only with S, and the Au formed a structure similar to Au2S. At higher acidity, Au and Pd were recovered by interacting with residues that formed more stable complexes, which was accompanied by changes in the behavior of cell populations adsorbing the metals. This is the first study to demonstrate the relationship between changes in the behavior of cell populations and chemical interactions that occur between substrate elements and biomaterial residues during biosorption. The findings of this study provide deeper insights into the biosorption mechanism and a background for the design of an environmentally friendly biosorbent.
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Affiliation(s)
- Ayumi Minoda
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaragi 305-8572, Japan.
| | - Shin-Ichi Miyashita
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 3, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8563, Japan.
| | - Shin-Ichiro Fujii
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 3, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8563, Japan.
| | - Kazumi Inagaki
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 3, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8563, Japan.
| | - Yoshio Takahashi
- Department of Earth and Planetary Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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36
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Dissanayake M, Wu D, Wu HF. Synthesis of Fluorescent Titanium Nanoclusters at ambient temperature for highly sensitive and selective detection of Creatine Kinase MM in myocardial infarction. Colloids Surf B Biointerfaces 2022; 217:112594. [PMID: 35671572 DOI: 10.1016/j.colsurfb.2022.112594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 05/18/2022] [Accepted: 05/21/2022] [Indexed: 11/27/2022]
Abstract
Fluorescent-based biosensing in Photoluminescence nanomaterials has emerged as a new sensing platform commonly used for disease diagnosis. However, the synthesis of Titanium nanoclusters is highly challenging since Titanium is easily oxidized into TiO2 at ambient temperature. To overcome this problem, we used an acidic medium and simple and robust protocol to synthesize the Titanium nanoclusters of 3-4 nm diameter, which could report the first fluorescent Titanium nanoclusters. New approaches for the novel synthesis of TiNCs can be used for rapid sensing of myocardial infarction (cardiac arrest). In converting creatine to phosphocreatine, CK-MM activates the reaction to convert ATP to ADP, thereby releasing the phosphate groups. Titanium nanoclusters bind strongly to the phosphate group and then quench the Fluorescence. Thus, this phenomenon can be further applied for quantification approaches. The quenching of fluorescence intensity with CK-MM concentration is linear with R² = 0.9829. The current approach can be applied for CK-MM sensing for a wide concentration range (0.625 U/L - 10 U/L). The detection limit was 0.2513 ng/ml in aqueous medium and 0.3465 ng/ml in human serum with high sensitivity when compared with the previous reported methods. Also, this is the first fluorescent-based sensing method to detect CK- MM. The fluorescent TiNCs is a novel platform to be widely applied for the phosphopeptide and phosphoprotein analysis due to the strong and covalent bondings between Ti with P atoms in the near future in medicine, biomedicine, and biological fields.
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Affiliation(s)
- Manusha Dissanayake
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, 70, Lien-Hai Road, Kaohsiung 80424, Taiwan, Republic of China
| | - Di Wu
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, 70, Lien-Hai Road, Kaohsiung 80424, Taiwan, Republic of China
| | - Hui-Fen Wu
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, 70, Lien-Hai Road, Kaohsiung 80424, Taiwan, Republic of China; School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan, Republic of China; Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan, Republic of China; International PhD Program for Science, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan, Republic of China.
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37
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Steen JD, Volker A, Duijnstee DR, Sardjan AS, Browne WR. pH-Induced Changes in the SERS Spectrum of Thiophenol at Gold Electrodes during Cyclic Voltammetry. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2022; 126:7680-7687. [PMID: 35558822 PMCID: PMC9082592 DOI: 10.1021/acs.jpcc.2c00416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 03/23/2022] [Indexed: 06/15/2023]
Abstract
Thiophenol is a model compound used in the study of self-assembly of arylthiols on gold surfaces. In particular, changes in the surface-enhanced Raman scattering (SERS) spectra of these self-assembled monolayers (SAMs) with a change of conditions have been ascribed to, for example, differences in orientation with respect to the surface, protonation state, and electrode potential. Here, we show that potential-induced changes in the SERS spectra of SAMs of thiophenol on electrochemically roughened gold surfaces can be due to local pH changes at the electrode. The changes observed during the potential step and cyclic voltammetry experiments are identical to those induced by acid-base switching experiments in a protic solvent. The data indicate that the potential-dependent spectral changes, assigned earlier to changes in molecular orientation with respect to the surface, can be ascribed to changes in the pH locally at the electrode. The pH at the electrode can change as much as several pH units during electrochemical measurements that reach positive potentials where oxidation of adventitious water can occur. Furthermore, once perturbed by applying positive potentials, the pH at the electrode takes considerable time to recover to that of the bulk solution. It is noted that the changes in pH even during cyclic voltammetry in organic solvents can be equivalent to the addition of strong acids, such as CF3SO3H, and such effects should be considered in the study of the redox chemistry of pH-sensitive redox systems and potential-dependent SERS in particular.
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38
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Yoshimoto S, Ogata H. Molecular planting of a single organothiol into a "gap-site" of a 2D patterned adlayer in an electrochemical environment. Chem Sci 2022; 13:4999-5005. [PMID: 35655888 PMCID: PMC9067580 DOI: 10.1039/d1sc07227g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 04/08/2022] [Indexed: 11/21/2022] Open
Abstract
The self-assembled inclusion of molecules into two-dimensional (2D) porous networks on surfaces has been extensively studied because 2D functional materials consisting of organic molecules have become an important research topic. However, the isolation of a single molecular thiol remains a challenging goal. Here, we report a method of planting and isolating organothiols onto a 2D patterned organic adlayer at an electrochemical interface. In situ scanning tunneling microscopy revealed that the phase transition of an ovalene adlayer is electrochemically induced and that the gap site created by three ovalene molecules serves as a 2D molecular template to isolate thiol molecules and to standardize the distance between them via the formation of precise selective open spaces, suggesting that electrochemical "molecular planting" opens applications for 2D patterns of isolated single organothiol molecules.
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Affiliation(s)
- Soichiro Yoshimoto
- Institute of Industrial Nanomaterials, Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
| | - Hiroto Ogata
- Graduate School of Science and Technology, Kumamoto University 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555 Japan
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39
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Algov I, Alfonta L. Use of Protein Engineering to Elucidate Electron Transfer Pathways between Proteins and Electrodes. ACS MEASUREMENT SCIENCE AU 2022; 2:78-90. [PMID: 36785727 PMCID: PMC9836065 DOI: 10.1021/acsmeasuresciau.1c00038] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Herein, we review protein engineering tools for electron transfer enhancement and investigation in bioelectrochemical systems. We present recent studies in the field while focusing on how electron transfer investigation and measurements were performed and discuss the use of protein engineering to interpret electron transfer mechanisms.
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40
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Azimzadeh M, Aghili Z, Jannat B, Jafari S, Rafizadeh Tafti S, Nasirizadeh N. Nanocomposite of electrochemically reduced graphene oxide and gold nanourchins for electrochemical DNA detection. IET Nanobiotechnol 2022; 16:190-198. [PMID: 35442560 PMCID: PMC9178657 DOI: 10.1049/nbt2.12086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 03/24/2022] [Accepted: 04/02/2022] [Indexed: 12/19/2022] Open
Abstract
A nanocomposite of graphene oxide and gold nanourchins has been used here to modify the surface of a screen‐printed carbon electrode to enhance the sensitivity of the electrochemical DNA detection system. A specific single‐stranded DNA probe was designed based on the target DNA sequence and was thiolated to be self‐assembled on the surface of the gold nanourchins placed on the modified electrode. Doxorubicin was used as an electrochemical label to detect the DNA hybridisation using differential pulse voltammetry (DPV). The assembling process was confirmed using scanning electron microscopy (SEM) imaging, cyclic voltammetry (CV), and the EIS method. The high sensitivity of the proposed system led to a low detection limit of 0.16 fM and a wide linear range from 0.5 to 950.0 fM. The specificity of the DNA hybridisation and the signalling molecule (haematoxylin) caused very high selectivity towards the target DNA than other non‐specific sequences.
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Affiliation(s)
- Mostafa Azimzadeh
- Halal Research Center of IRI, MOH, Tehran, Iran.,Medical Nanotechnology & Tissue Engineering Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Stem Cell Biology Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Department of Advanced Medical Sciences and Technologies, School of Paramedicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Zahra Aghili
- Food & Drug Control Reference Laboratories Center, FDA, MOH, Tehran, Iran
| | | | - Saeid Jafari
- Department of Textile and Polymer Engineering, Yazd Branch, Islamic Azad University, Yazd, Iran
| | - Saeed Rafizadeh Tafti
- Medical Nanotechnology & Tissue Engineering Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Navid Nasirizadeh
- Halal Research Center of IRI, MOH, Tehran, Iran.,Department of Textile and Polymer Engineering, Yazd Branch, Islamic Azad University, Yazd, Iran
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41
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Zhao YY, Cao Y, Siligardi G, Mehl GH, Liu F, Ungar G. Self-assembly of gold nanoparticles into an adjustable plasmonic 3D lattice using Janus-type forked mesogenic ligands. Chem Asian J 2022; 17:e202200057. [PMID: 35192226 DOI: 10.1002/asia.202200057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/21/2022] [Indexed: 11/06/2022]
Abstract
We report the formation of a 3D body-centred self-assembled superlattice of gold nanoparticles whose interparticle gap, and hence its plasmonic properties, are adjustable exclusively in the xy -plane. Thus, even though the particles are spherical, their anisotropic packing generates tailorable plasmonic dichroism. The gold nanoparticles are coated with forked ligands containing two mesogens: either two cholesterols ("twin"), one cholesterol and one azobenzene ("Janus"), or a mixture of the two. Beside the body-centered arrangement of gold nanoparticles, the structure also contains unusual two-dimensionally modulated smectic-like layers of mesogens in an egg-box geometry. Moreover, the presence of azobenzene mesogens allows the superlattice to be melted through UV-induced photo-isomerization; the process is reversible displaying low fatigue on repeated cycling.
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Affiliation(s)
- Yang-Yang Zhao
- Xi'an Jiaotong University, Department of Chemistry, School of Science, West Xianning Road, 710049, Xi'an, CHINA
| | - Yu Cao
- Xi'an Jiaotong University, Department of Chemistry, School of Science, CHINA
| | | | - Georg H Mehl
- University of Hull, Department of Chemistry, UNITED KINGDOM
| | - Feng Liu
- Xi'an Jiaotong University, Department of Chemistry, School of Science, CHINA
| | - Goran Ungar
- University of Sheffield, Materials Science and Engineering, Sir Robert Hadfield Building, Mappin Street, S1 3JD, Sheffield, UNITED KINGDOM
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42
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Wei J, Kahlal S, Halet JF, Saillard JY, Muñoz-Castro A. Insight Into the Stability and Electronic and Optical Properties of N-Heterocyclic Carbene Analogues of Halogen/Phosphine-Protected Au 13 Superatomic Clusters. J Phys Chem A 2022; 126:536-545. [PMID: 35044183 DOI: 10.1021/acs.jpca.1c09084] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Atomically precise gold nanoclusters (AuNCs) belong to a relevant area offering useful templates with tunable properties toward functional nanostructures. In this work, we explored the feasible incorporation of N-heterocyclic carbenes (NHCs), as part of the protecting-ligand shell in AuNCs. Our results, which are based on the substitution of phosphine ligands in experimentally characterized AuNCs by NHCs in various eight-electron superatoms Au13 and M4Au9 (M = Cu, Ag), indicate similar electronic structure and stability but somewhat different optical properties. These findings support the feasible obtention of novel targets for explorative synthetic efforts featuring NHC ligands on medium-sized species based on the recurrent Au13 icosahedral core. The hypothetical species appear to be interesting templates for building blocks in nanostructured materials with tuned properties, which encourage experimental exploration of ligand versatility in homo- and heterometallic superatomic clusters.
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Affiliation(s)
- Jianyu Wei
- Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, Université de Rennes, CNRS, F-35000 Rennes, France
| | - Samia Kahlal
- Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, Université de Rennes, CNRS, F-35000 Rennes, France
| | - Jean-François Halet
- CNRS-Saint-Gobain-NIMS, IRL 3629, Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
| | - Jean-Yves Saillard
- Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, Université de Rennes, CNRS, F-35000 Rennes, France
| | - Alvaro Muñoz-Castro
- Grupo de Química Inorgánica y Materiales Moleculares, Facultad de Ingenieria, Universidad Autonoma de Chile, El Llano Subercaseaux 2801, 8910188 Santiago, Chile
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43
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Mathioudaki E, Alifragis Y, Fouskaki M, Chochlakis D, Xie H, Psaroulaki A, Tsiotis G, Chaniotakis N. Electrochemical antigenic sensor for the diagnosis of chronic Q fever. CURRENT RESEARCH IN BIOTECHNOLOGY 2022. [DOI: 10.1016/j.crbiot.2022.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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44
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Trabbic K, Kleski KA, Barchi JJ. A Stable Gold Nanoparticle-Based Vaccine for the Targeted Delivery of Tumor-Associated Glycopeptide Antigens. ACS BIO & MED CHEM AU 2021; 1:31-43. [PMID: 34927166 PMCID: PMC8675876 DOI: 10.1021/acsbiomedchemau.1c00021] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We have developed a novel antigen delivery system based on polysaccharide-coated gold nanoparticles (AuNPs) targeted to antigen presenting cells (APCs) expressing Dectin-1. AuNPs were synthesized de-novo using yeast-derived β-1,3-glucans (B13G) as the reductant and passivating agent in a microwave-catalyzed procedure yielding highly uniform and serum-stable particles. These were further functionalized with both a peptide and a specific glycosylated form from the tandem repeat sequence of mucin 4 (MUC4), a glycoprotein overexpressed in pancreatic tumors. The glycosylated sequence contained the Thomsen-Friedenreich disaccharide, a pan-carcinoma, Tumor-Associated Carbohydrate Antigen (TACA), which has been a traditional target for antitumor vaccine design. These motifs were prepared with a cathepsin B protease cleavage site (Gly-Phe-Leu-Gly), loaded on the B13G-coated particles and these constructs were examined for Dectin-1 binding, APC processing and presentation in a model in vitro system and for immune responses in mice. We showed that these particles elicit strong in vivo immune responses through the production of both high-titer antibodies and priming of antigen-recognizing T-cells. Further examination showed that a favorable antitumor balance of expressed cytokines was generated, with limited expression of immunosuppressive Il-10. This system is modular in that any range of antigens can be conjugated to our particles and efficiently delivered to APCs expressing Dectin-1.
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Affiliation(s)
- Kevin
R. Trabbic
- Chemical Biology Laboratory,
Center for Cancer Research, National Cancer
Institute at Frederick, Frederick, Maryland 21702, United States
| | - Kristopher A. Kleski
- Chemical Biology Laboratory,
Center for Cancer Research, National Cancer
Institute at Frederick, Frederick, Maryland 21702, United States
| | - Joseph J. Barchi
- Chemical Biology Laboratory,
Center for Cancer Research, National Cancer
Institute at Frederick, Frederick, Maryland 21702, United States
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45
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Truttmann V, Pollitt S, Drexler H, Nandan SP, Eder D, Barrabés N, Rupprechter G. Selective ligand exchange synthesis of Au 16(2-PET) 14 from Au 15(SG) 13. J Chem Phys 2021; 155:161102. [PMID: 34717367 DOI: 10.1063/5.0062534] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Replacement of protecting ligands of gold nanoclusters by ligand exchange has become an established post-synthetic tool for selectively modifying the nanoclusters' properties. Several Au nanoclusters are known to additionally undergo size transformations upon ligand exchange, enabling access to cluster structures that are difficult to obtain by direct synthesis. This work reports on the selective size transformation of Au15(SG)13 (SG: glutathione) nanoclusters to Au16(2-PET)14 (2-PET: 2-phenylethanethiol) nanoclusters through a two-phase ligand exchange process at room temperature. Among several parameters evaluated, the addition of a large excess of exchange thiol (2-PET) to the organic phase was identified as the key factor for the structure conversion. After exchange, the nature of the clusters was determined by UV-vis, electrospray ionization-time of flight mass spectrometry, attenuated total reflection-Fourier transform infrared, and extended x-ray absorption fine-structure spectroscopy. The obtained Au16(2-PET)14 clusters proved to be exceptionally stable in solution, showing only slightly diminished UV-vis absorption features after 3 days, even when exposed to an excess of thiol ligands.
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Affiliation(s)
- Vera Truttmann
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC, 1060 Vienna, Austria
| | - Stephan Pollitt
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC, 1060 Vienna, Austria
| | - Hedda Drexler
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC, 1060 Vienna, Austria
| | - Sreejith P Nandan
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC, 1060 Vienna, Austria
| | - Dominik Eder
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC, 1060 Vienna, Austria
| | - Noelia Barrabés
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC, 1060 Vienna, Austria
| | - Günther Rupprechter
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC, 1060 Vienna, Austria
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46
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Gangwar R, Subrahmanyam C, Vanjari SRK. Facile, Label‐Free, Non‐Enzymatic Electrochemical Nanobiosensor Platform as a Significant Step towards Continuous Glucose Monitoring. ChemistrySelect 2021. [DOI: 10.1002/slct.202102727] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Rahul Gangwar
- Department of Electrical Engineering Indian Institute of Technology Hyderabad India
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47
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Sankari SS, Dahms HU, Tsai MF, Lo YL, Wang LF. Comparative study of an antimicrobial peptide and a neuropeptide conjugated with gold nanorods for the targeted photothermal killing of bacteria. Colloids Surf B Biointerfaces 2021; 208:112117. [PMID: 34564040 DOI: 10.1016/j.colsurfb.2021.112117] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/09/2021] [Accepted: 09/13/2021] [Indexed: 01/21/2023]
Abstract
There are certain disadvantages in treating bacterial infections through conventional methods. For this reason, the current study does focus on combating bacterial wound infections by photothermal therapy assisted by gold nanorod-peptide conjugates (GNR-peptide conjugates). Two peptides, the cationic antimicrobial peptide LL-37 and neuropeptide ANGIOPEP-2 both with specificity for targeted bacterial binding, were conjugated with GNR surface through electrostatic interactions. The GNR-peptide conjugates showed good biocompatibility, sufficient stability, enhanced targeting, potential photothermal killing of bacteria, and possible acceleration of wound healing. The photo-biomodulation properties of NIR improved the wound closure rates through enhanced cell migration. The multifunctional LL37-conjugated GNRs significantly enhanced photothermal therapeutic outcomes based on bacterial targeting with promising wound healing properties.
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Affiliation(s)
- Sivasoorian Siva Sankari
- Department of Medicinal & Applied Chemistry, College of Life Sciences, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Hans-Uwe Dahms
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung 807, Taiwan; Research Centre for Environmental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
| | - Ming-Fong Tsai
- Department of Medicinal & Applied Chemistry, College of Life Sciences, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yu-Lun Lo
- Department of Medicinal & Applied Chemistry, College of Life Sciences, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Li-Fang Wang
- Department of Medicinal & Applied Chemistry, College of Life Sciences, Kaohsiung Medical University, Kaohsiung 807, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan; Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
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48
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Liu H, Yang A, Song J, Wang N, Lam P, Li Y, Law HKW, Yan F. Ultrafast, sensitive, and portable detection of COVID-19 IgG using flexible organic electrochemical transistors. SCIENCE ADVANCES 2021; 7:eabg8387. [PMID: 34524851 PMCID: PMC8443172 DOI: 10.1126/sciadv.abg8387] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The outbreak of COVID-19 and its continued spread have seriously threatened public health. Antibody testing is essential for infection diagnosis, seroepidemiological analysis, and vaccine evaluation. However, convenient, fast, and accurate antibody detection remains a challenge in this protracted battle. Here, we report an ultrafast, low-cost, label-free, and portable SARS-CoV-2 immunoglobulin G (IgG) detection platform based on organic electrochemical transistors (OECTs), which can be remotely controlled by a mobile phone. To enable faster detection, voltage pulses are applied on the gate electrode of the OECT to accelerate binding between the antibody and antigen. By optimizing ion concentrations and pH values of test solutions, we realize specific detection of SARS-CoV-2 IgG in several minutes with a detectable region from 10 fM to 100 nM, which encompasses the range of serum SARS-CoV-2 IgG levels in humans. These portable sensors show promise for use in diagnosis and prognosis of COVID-19.
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Affiliation(s)
- Hong Liu
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, 999077 Kowloon, Hong Kong
| | - Anneng Yang
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, 999077 Kowloon, Hong Kong
| | - Jiajun Song
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, 999077 Kowloon, Hong Kong
| | - Naixiang Wang
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, 999077 Kowloon, Hong Kong
| | - Puiyiu Lam
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, 999077 Kowloon, Hong Kong
| | - Yuenling Li
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, 999077 Kowloon, Hong Kong
| | - Helen Ka-wai Law
- Department of Health Technology and Informatics Faculty of Health and Social Sciences, The Hong Kong Polytechnic University, Hung Hom, 999077 Kowloon, Hong Kong
| | - Feng Yan
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, 999077 Kowloon, Hong Kong
- Corresponding author.
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49
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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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50
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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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