1
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Jia J, Chen JB, Du J, Lian C, Xu S, Liu H, Li S, Liu Y. Self-assembled core-shell clusters in deep eutectic solvents based on tetra-n-alkylammonium cations for high dissolution of strongly hydrogen-bonded small molecules. J Colloid Interface Sci 2022; 628:426-436. [DOI: 10.1016/j.jcis.2022.07.140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 07/12/2022] [Accepted: 07/23/2022] [Indexed: 10/16/2022]
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2
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Eswaramoorthy SK, Dass A. Digestive ripening yields atomically precise Au nanomolecules. NEW J CHEM 2021. [DOI: 10.1039/d1nj04042a] [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
Atomically precise Au nanomolecules yielded through digestive ripening establishes that regardless of the pathway, both DR and Brust methods lead to the formation of atomic precise Au NMs.
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Affiliation(s)
| | - Amala Dass
- Department of Chemistry and Biochemistry, University of Mississippi, Oxford, MS 38677, USA
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3
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Cyclodextrin Rotaxanes of Pt Complexes and Their Conversion to Pt Nanoparticles. Molecules 2020; 25:molecules25235617. [PMID: 33260384 PMCID: PMC7729445 DOI: 10.3390/molecules25235617] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 11/21/2020] [Accepted: 11/23/2020] [Indexed: 11/16/2022] Open
Abstract
The cationic Pt complex (Pt(NC6H4-C6H4N-(CH2)10-O(C6H3-3,5-(OMe)2)(MeN-(CH2CH2NMe2)2))+ was prepared by the reaction of alkylbipyridinium ligand with a nitrateplatinum(II) complex. Mixing the complex and α- and β-cyclodextrins in aqueous media produced the corresponding [2]rotaxanes with 1:1 stoichiometry. γ-Cyclodextrin and the Pt complex formed a rotaxane having components in a 1:1 or 2:1 molar ratio. The results of mass and nuclear magnetic resonance (NMR) measurements confirmed the rotaxane structures of the Pt complexes. Transmission electron microscopy (TEM) and atomic force microscope (AFM) analyses revealed the formation of micelles or vesicles. The addition of NaBH4 to the rotaxanes in aqueous media formed Pt nanoparticles with diameters of 1.3-2.8 nm, as characterized by TEM. The aggregated size of the nanoparticles formed from the rotaxane did not change even at 70 °C, and they showed higher thermal stability than those obtained from the reduction of the cyclodextrin-free Pt complex.
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4
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5
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Qian W, Song T, Ye M, Zhang H, Feng C, Lu G, Huang X. Graphene Oxide/Ferrocene-Containing Polymer/Gold Nanoparticle Triple Nanocomposite. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E310. [PMID: 30823551 PMCID: PMC6410150 DOI: 10.3390/nano9020310] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 02/19/2019] [Accepted: 02/20/2019] [Indexed: 11/16/2022]
Abstract
A facile strategy to prepare GO-based nanocomposites with both gold nanoparticles (AuNPs) and ferrocene (Fc) moieties was developed. The surface of GO was modified with PFcMAss homopolymer by surface-initiated atom transfer radical polymerization of a new methacrylate monomer of 2-((2-(methacryloyloxy)ethyl)disulfanyl)ethyl ferrocene-carboxylate (FcMAss), consisting of disulfide as an anchoring group for stabilizing AuNPs and Fc group as an additional functionality. AuNPs with an average diameter of about 4.1 nm were formed in situ on the surface of PFcMAss-decorated GO (GO-PFcMAss) via Brust-Schiffrin method to give GO-PFcMAss-AuNPs multifunctional nanocomposites bearing GO, AuNPs and Fc groups. The obtained nanocomposites were characterized by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), transmission electron microscopy (TEM) and atomic force microscopy (AFM). Since disulfide-containing polymers, rather than the commonly used thiol-containing compounds, were employed as ligands to stabilize AuNPs, much more stabilizing groups were attached onto the surface of GO, and thus more AuNPs were able to be introduced onto the surface of GO. Besides, polymeric chains on the surface of GO endowed GO-PFcMAss-AuNPs nanocomposites with excellent colloidal stability, and the usage of a disulfide group provides possibility to efficiently incorporate additional functionalities by easily modifying structure of disulfide-based monomer.
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Affiliation(s)
- Wenhao Qian
- Department of Stomatology, Shanghai Xuhui District Dental Center, 685 Zhaojiabang Road, Shanghai 200032, China.
| | - Tao Song
- Department of Stomatology, Shanghai Xuhui District Dental Center, 685 Zhaojiabang Road, Shanghai 200032, China.
| | - Mao Ye
- Department of Stomatology, Shanghai Xuhui District Dental Center, 685 Zhaojiabang Road, Shanghai 200032, China.
| | - Haiyan Zhang
- Department of Stomatology, Shanghai Xuhui District Dental Center, 685 Zhaojiabang Road, Shanghai 200032, China.
| | - Chun Feng
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.
| | - Guolin Lu
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.
| | - Xiaoyu Huang
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.
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6
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Wu S, Nguyen L, Dang J, Liang K, Dail C, Henriquez B, Huynh QT, Dinh UN, Liang Y, Anz S, Sun P. Evaluation of the Stoichiometry between PtCl 6
2−
and TOA +
Ions during the Liquid/Liquid Extraction. ELECTROANAL 2018. [DOI: 10.1002/elan.201800412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shu Wu
- Department of Chemistry and Biochemistry; California State Polytechnic University; Pomona, California 91768
| | - Linh Nguyen
- Department of Chemistry and Biochemistry; California State Polytechnic University; Pomona, California 91768
| | - Jenny Dang
- Department of Chemistry and Biochemistry; California State Polytechnic University; Pomona, California 91768
| | - Kevin Liang
- Department of Chemistry and Biochemistry; California State Polytechnic University; Pomona, California 91768
| | - Christopher Dail
- Department of Chemistry and Biochemistry; California State Polytechnic University; Pomona, California 91768
| | - Brenda Henriquez
- Department of Chemistry and Biochemistry; California State Polytechnic University; Pomona, California 91768
| | - Quyen T. Huynh
- Department of Chemistry and Biochemistry; California State Polytechnic University; Pomona, California 91768
| | - Uyen N. Dinh
- Department of Chemistry and Biochemistry; California State Polytechnic University; Pomona, California 91768
| | - Yuhao Liang
- Department of Chemistry and Biochemistry; California State Polytechnic University; Pomona, California 91768
| | - Samir Anz
- Department of Chemistry and Biochemistry; California State Polytechnic University; Pomona, California 91768
| | - Peng Sun
- Department of Chemistry and Biochemistry; California State Polytechnic University; Pomona, California 91768
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7
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Zhou M, Wang D, Mirkin MV. Electrochemical Evaluation of the Number of Au Atoms in Polymeric Gold Thiolates by Single Particle Collisions. Anal Chem 2018; 90:8285-8289. [DOI: 10.1021/acs.analchem.7b05333] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Min Zhou
- Department of Chemistry and Biochemistry, Queens College, City University of New York, Flushing, New York 11367, United States
| | - Dengchao Wang
- Department of Chemistry and Biochemistry, Queens College, City University of New York, Flushing, New York 11367, United States
| | - Michael V. Mirkin
- Department of Chemistry and Biochemistry, Queens College, City University of New York, Flushing, New York 11367, United States
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8
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San KA, Shon YS. Synthesis of Alkanethiolate-Capped Metal Nanoparticles Using Alkyl Thiosulfate Ligand Precursors: A Method to Generate Promising Reagents for Selective Catalysis. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E346. [PMID: 29783714 PMCID: PMC5977360 DOI: 10.3390/nano8050346] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 05/15/2018] [Accepted: 05/15/2018] [Indexed: 12/27/2022]
Abstract
Evaluation of metal nanoparticle catalysts functionalized with well-defined thiolate ligands can be potentially important because such systems can provide a spatial control in the reactivity and selectivity of catalysts. A synthetic method utilizing Bunte salts (sodium S-alkylthiosulfates) allows the formation of metal nanoparticles (Au, Ag, Pd, Pt, and Ir) capped with alkanethiolate ligands. The catalysis studies on Pd nanoparticles show a strong correlation between the surface ligand structure/composition and the catalytic activity and selectivity for the hydrogenation/isomerization of alkenes, dienes, trienes, and allylic alcohols. The high selectivity of Pd nanoparticles is driven by the controlled electronic properties of the Pd surface limiting the formation of Pd⁻alkene adducts (or intermediates) necessary for (additional) hydrogenation. The synthesis of water soluble Pd nanoparticles using ω-carboxylate-S-alkanethiosulfate salts is successfully achieved and these Pd nanoparticles are examined for the hydrogenation of various unsaturated compounds in both homogeneous and heterogeneous environments. Alkanethiolate-capped Pt nanoparticles are also successfully synthesized and further investigated for the hydrogenation of various alkynes to understand their geometric and electronic surface properties. The high catalytic activity of activated terminal alkynes, but the significantly low activity of internal alkynes and unactivated terminal alkynes, are observed for Pt nanoparticles.
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Affiliation(s)
- Khin Aye San
- Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Blvd., Long Beach, CA 90840, USA.
| | - Young-Seok Shon
- Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Blvd., Long Beach, CA 90840, USA.
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9
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Chen Y, Liu Y, Yao Y, Zhang S, Gu Z. Reverse micelle-based water-soluble nanoparticles for simultaneous bioimaging and drug delivery. Org Biomol Chem 2018; 15:3232-3238. [PMID: 28327735 DOI: 10.1039/c7ob00169j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
With special confined water pools, reverse micelles (RMs) have shown potential for a wide range of applications. However, the inherent water-insolubility of RMs hinders their further application prospects, especially for applications related to biology. We recently reported the first successful transfer of RMs from organic media to an aqueous phase without changing the smart water pools by the hydrolysis of an arm-cleavable interfacial cross-linked reverse micelles. Herein, we employed another elaborate amphiphile 1 to construct new acrylamide-based cross-linked water-soluble nanoparticles (ACW-NPs) under much gentler conditions. The special property of the water pools of the ACW-NPs was confirmed by both the Förster resonance energy transfer (FRET) between 5-((2-aminoethyl)amino)naphthalene-1-sulfonic acid (1,5-EDANS) and benzoic acid, 4-[2-[4-(dimethylamino)phenyl]diazenyl] (DABCYL) and satisfactory colloidal stability in 10% fetal bovine serum. Importantly, featured by the gentle synthetic strategy, confined water pool, and carboxylic acid-functionalized surface, the new ACW-NPs are well suitable for biological applications. As an example, the fluorescent reagent 8-hydroxy-1,3,6-pyrenetrisulfonic acid trisodium salt (HPTS) was encapsulated in the core and simultaneously, the anticancer drug gemcitabine (Gem) was covalently conjugated onto the surface exterior. As expected, the resulting multifunctional ACW-NPs@HPTS@Gem exhibits a high imaging effect and anticancer activity for non-small lung cancer cells.
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Affiliation(s)
- Ying Chen
- National Engineering Research Centre for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu 610064, China.
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10
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Booth SG, Uehara A, Chang SY, La Fontaine C, Fujii T, Okamoto Y, Imai T, Schroeder SLM, Dryfe RAW. The significance of bromide in the Brust-Schiffrin synthesis of thiol protected gold nanoparticles. Chem Sci 2017; 8:7954-7962. [PMID: 29568441 PMCID: PMC5851337 DOI: 10.1039/c7sc03266h] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 09/26/2017] [Indexed: 01/11/2023] Open
Abstract
The mechanism of the two-phase Brust-Schiffrin synthesis of alkane thiol protected metal nanoparticles is known to be highly sensitive to the precursor species and reactant conditions. In this work X-ray absorption spectroscopy is used in conjunction with liquid/liquid electrochemistry to highlight the significance of Br- in the reaction mechanism. The species [AuBr4]- is shown to be a preferable precursor in the Brust-Schiffrin method as it is more resistant to the formation of Au(i) thiolate species than [AuCl4]-. Previous literature has demonstrated that avoidance of the Au(i) thiolate is critical to achieving a good yield of nanoparticles, as [Au(i)X2]- species are more readily reduced by NaBH4. We propose that the observed behavior of [AuBr4]- species described herein explains the discrepancies in reported behavior present in the literature to date. This new mechanistic understanding should enable nanoparticle synthesis with a higher yield and reduce particle size polydispersity.
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Affiliation(s)
- S G Booth
- School of Chemistry , University of Manchester , Manchester , M13 9PL , UK .
| | - A Uehara
- Division of Nuclear Engineering Science , Research Reactor Institute , Kyoto University , Kumatori , Sennan , Osaka 590-0494 , Japan .
| | - S-Y Chang
- Diamond Light Source Ltd. , Didcot, Oxfordshire OX11 0DE , UK
| | - C La Fontaine
- Synchrotron Soleil , L'Orme des Merisiers, Saint-Aubin, BP48 , 91192 , Gif-sur-Yvette , France
| | - T Fujii
- Division of Sustainable Energy and Environmental Engineering , Graduate School of Engineering , Osaka University , Suita , Osaka 565-0871 , Japan
| | - Y Okamoto
- Materials Sciences Research Center , Japan Atomic Energy Agency , 2-4, Shirakata, Tokai , Naka , Ibaraki 319-1195 , Japan
| | - T Imai
- Department of Materials Chemistry , Faculty of Science and Technology , Ryukoku University , Otsu , Shiga 520-2194 , Japan
| | - S L M Schroeder
- Diamond Light Source Ltd. , Didcot, Oxfordshire OX11 0DE , UK.,School of Chemical and Process Engineering , University of Leeds , Leeds LS2 9JT , UK
| | - R A W Dryfe
- School of Chemistry , University of Manchester , Manchester , M13 9PL , UK .
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11
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Liu Y, Chen Y, Yao Y, Luo K, Zhang S, Gu Z. Confined Pool-Buried Water-Soluble Nanoparticles from Reverse Micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:5275-5282. [PMID: 28505441 DOI: 10.1021/acs.langmuir.7b00890] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
With the special nature of confined water pools, reverse micelles (RMs) have shown potential for a wide range of applications. However, the inherent water insolubility of RMs hinders their further application prospect especially for applications related to biology. We present herein the first successful transformation of water-insoluble RMs into water-soluble nanoparticles without changing the confined aqueous interiors by hydrolysis/aminolysis of arm-cleavable interfacial cross-linked reverse micelles formed from diester surfactant 1. The unique properties exhibited by the aqueous interiors of the resulting pool-buried water-soluble nanoparticles (PWNPs) were demonstrated both by the template synthesis of gold nanoparticles in the absence of external reductants and by the fluorescence enhancement of encapsulated thioflavin T (ThT). Importantly, the unique potential for PWNPs in biological applications was exemplified by the use of ThT@PWNPs and "cell targeted" ThT@PWNPs as effective optical imaging agents of living cells. This work conceptually overcomes the application bottleneck of RMs and opens an entry to a new class of functional materials.
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Affiliation(s)
- Yong Liu
- National Engineering Research Center for Biomaterials and ‡College of Chemistry, Sichuan University , 29 Wangjiang Road, Chengdu 610064, China
| | - Ying Chen
- National Engineering Research Center for Biomaterials and ‡College of Chemistry, Sichuan University , 29 Wangjiang Road, Chengdu 610064, China
| | - Yongchao Yao
- National Engineering Research Center for Biomaterials and ‡College of Chemistry, Sichuan University , 29 Wangjiang Road, Chengdu 610064, China
| | - Kui Luo
- National Engineering Research Center for Biomaterials and ‡College of Chemistry, Sichuan University , 29 Wangjiang Road, Chengdu 610064, China
| | - Shiyong Zhang
- National Engineering Research Center for Biomaterials and ‡College of Chemistry, Sichuan University , 29 Wangjiang Road, Chengdu 610064, China
| | - Zhongwei Gu
- National Engineering Research Center for Biomaterials and ‡College of Chemistry, Sichuan University , 29 Wangjiang Road, Chengdu 610064, China
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12
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San KA, Chen V, Shon YS. Preparation of Partially Poisoned Alkanethiolate-Capped Platinum Nanoparticles for Hydrogenation of Activated Terminal Alkynes. ACS APPLIED MATERIALS & INTERFACES 2017; 9:9823-9832. [PMID: 28252941 PMCID: PMC5364944 DOI: 10.1021/acsami.7b02765] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 03/02/2017] [Indexed: 05/26/2023]
Abstract
Stable and isolable alkanethiolate-stabilized Pt nanoparticles (PtNP) were synthesized using the two-phase thiosulfate method with sodium S-alkylthiosulfate as ligand precursor. The mechanistic formation of octanethiolate-capped PtNP (Pt-SC8) from both sodium S-octylthiosulfate and 1-octanethiol ligands was investigated by using 1H NMR and UV-vis spectroscopies, which revealed the formation of different Pt complexes as the reaction intermediates. The synthesis using S-octylthiosulfate ligand precursor produced Pt-SC8 in higher yields than that using 1-octanethiol ligand. The obtained nanoparticles were characterized by 1H NMR, UV-vis spectroscopy, infrared spectroscopy (IR), thermogravimetric analysis, and transmission electron microscopy (TEM). The results obtained from 1H NMR, IR, and UV-vis spectroscopy were consistent with the formation of stable and pure alkanethiolate-capped PtNP. TEM images of PtNP confirmed their small average core size (∼1.5 nm) and high monodispersity. The partially poisoned PtNP with thiolate monolayer ligands were further investigated for the hydrogenation of various alkynes to understand the organic ligands-induced geometric and electronic surface properties of colloidal Pt nanoparticle catalysts. The high catalytic activity of activated terminal alkynes, but the significantly low activity of internal alkynes and unactivated terminal alkynes, were observed under the mild reaction conditions (room temperature and atmospheric pressure). These results indicated that the presence of alkanethiolate ligands could decrease the coordination activity of PtNP surface especially for the bulkier and unactivated substrates.
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13
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Fernández-Lodeiro J, Rodríguez-González B, Santos HM, Bertolo E, Capelo JL, Dos Santos AA, Lodeiro C. Unraveling the Organotellurium Chemistry Applied to the Synthesis of Gold Nanomaterials. ACS OMEGA 2016; 1:1314-1325. [PMID: 31457198 PMCID: PMC6640781 DOI: 10.1021/acsomega.6b00309] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 12/05/2016] [Indexed: 06/10/2023]
Abstract
Long-term preservation of the properties of gold nanoparticles in both solution and the dry powder form can be difficult. We have overcome this challenge by using organotellurium derivatives as both reducing agents and stabilizers in the synthesis of gold nanoparticles. This new synthetic protocol takes advantage of the photochemical and oxidative properties of diphenyl ditelluride (Ph2Te2), which, so far, have never been exploited in the synthesis of gold nanoparticles. The Au/Te core/shell (inorganic/organic) hybrid nanomaterial can be obtained in a one-step reaction, using only Ph2Te2 and HAuCl4. By modifying the reaction conditions, different resonance conditions of the gold core are achieved due to the formation of external shells with different thicknesses. The organotellurium shell can be easily removed by resuspension of the nanoparticles in environmentally friendly solvents, such as water or ethanol, making the Au core available for subsequent applications. A mechanism for the formation of core/shell nanoparticles has also been discussed.
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Affiliation(s)
- Javier Fernández-Lodeiro
- BIOSCOPE
Group, UCIBIO@REQUIMTE, Chemistry Department, Faculty of Science and
Technology, University NOVA of Lisbon, Caparica 2829-516, Portugal
- ProteoMass
Scientific Society, Faculty of
Science and Technology, Madan Parque, Building VI, Office 23, Campus de Caparica, Caparica 2829-516, Portugal
- Instituto
de Química, Universidade de São
Paulo, Av. Prof. Lineu
Prestes, 748, CxP.26077, São Paulo 05508-000, Brazil
| | - Benito Rodríguez-González
- Scientific
and Technological Research Assistance Centre (CACTI), University of
Vigo, Lagoas-Marcosende, Vigo 36310, Spain
| | - Hugo M. Santos
- BIOSCOPE
Group, UCIBIO@REQUIMTE, Chemistry Department, Faculty of Science and
Technology, University NOVA of Lisbon, Caparica 2829-516, Portugal
- ProteoMass
Scientific Society, Faculty of
Science and Technology, Madan Parque, Building VI, Office 23, Campus de Caparica, Caparica 2829-516, Portugal
| | - Emilia Bertolo
- Biomolecular
Research Group, School of Human and Life Sciences, Canterbury Christ Church University, Canterbury CT1 1QU, U.K.
| | - José Luis Capelo
- BIOSCOPE
Group, UCIBIO@REQUIMTE, Chemistry Department, Faculty of Science and
Technology, University NOVA of Lisbon, Caparica 2829-516, Portugal
- ProteoMass
Scientific Society, Faculty of
Science and Technology, Madan Parque, Building VI, Office 23, Campus de Caparica, Caparica 2829-516, Portugal
| | - Alcindo A. Dos Santos
- Instituto
de Química, Universidade de São
Paulo, Av. Prof. Lineu
Prestes, 748, CxP.26077, São Paulo 05508-000, Brazil
| | - Carlos Lodeiro
- BIOSCOPE
Group, UCIBIO@REQUIMTE, Chemistry Department, Faculty of Science and
Technology, University NOVA of Lisbon, Caparica 2829-516, Portugal
- ProteoMass
Scientific Society, Faculty of
Science and Technology, Madan Parque, Building VI, Office 23, Campus de Caparica, Caparica 2829-516, Portugal
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14
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Li T, Li F, Xiang W, Yi Y, Chen Y, Cheng L, Liu Z, Xu H. Selenium-Containing Amphiphiles Reduced and Stabilized Gold Nanoparticles: Kill Cancer Cells via Reactive Oxygen Species. ACS APPLIED MATERIALS & INTERFACES 2016; 8:22106-12. [PMID: 27517121 DOI: 10.1021/acsami.6b08282] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Selenium has attracted increasing interest in recent decades because of the function of regulating the redox balance in the human body. However, biomedical studies of selenium are still limited. Gold nanoparticles (AuNPs), typically prepared by a first reduction step followed by a second stabilization step, are widely applied in biomedical studies. However, their own anticancer activity is less studied. Here, we report 2 nm AuNPs with significant anticancer activity (IC50 = 20 μM) that is stabilized by a selenium-containing amphiphile EGSe-tMe. The AuNPs are prepared by simply mixing chloroauric acid (HAuCl4) with EGSe-tMe, which acts as both a reducing agent and a stabilizer. In contrast to AuNPs prepared by EGSe-tMe, EGSe-tMe alone and typically prepared AuNPs show little anticancer activity even at concentrations up to 250 μM. Mechanistic studies suggest that selenium in cooperation with AuNPs can induce high concentrations of reactive oxygen species (ROS) in cancer cells, leading to cellular apoptosis.
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Affiliation(s)
- Tianyu Li
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University , Beijing, 100084, People's Republic of China
| | - Feng Li
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University , Beijing, 100084, People's Republic of China
| | - Wentian Xiang
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University , Beijing, 100084, People's Republic of China
| | - Yu Yi
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University , Beijing, 100084, People's Republic of China
| | - Yuyan Chen
- Institute of Functional Nano & Soft Materials Laboratory (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, Jiangsu 215123, People's Republic of China
| | - Liang Cheng
- Institute of Functional Nano & Soft Materials Laboratory (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, Jiangsu 215123, People's Republic of China
| | - Zhuang Liu
- Institute of Functional Nano & Soft Materials Laboratory (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, Jiangsu 215123, People's Republic of China
| | - Huaping Xu
- Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University , Beijing, 100084, People's Republic of China
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15
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Zhou H, Wang X, Tang J, Yang YW. Tuning the growth, crosslinking, and gating effect of disulfide-containing PGMAs on the surfaces of mesoporous silica nanoparticles for redox/pH dual-controlled cargo release. Polym Chem 2016. [DOI: 10.1039/c6py00045b] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
PGMA brushes grown on MSN surfaces via SI-ATRP could be cross-linked by cystamine or through a KI/H2O2 (30%) assisted disulfide bond exchange to realize gating effects for redox/pH dual-controlled cargo release.
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Affiliation(s)
- Hang Zhou
- College of Chemistry
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC)
- Jilin University
- Changchun 130012
| | - Xin Wang
- College of Chemistry
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC)
- Jilin University
- Changchun 130012
| | - Jun Tang
- College of Chemistry
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC)
- Jilin University
- Changchun 130012
| | - Ying-Wei Yang
- College of Chemistry
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC)
- Jilin University
- Changchun 130012
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16
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Absalan G, Akhond M, Ershadifar H, Rezaei MA. Two-approach study for preparing stable colloidal gold nanoparticles in organic solvents by using 1-dodecyl-3-methylimidazolium bromide as an efficient capping and phase transfer agent. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.09.045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Perala SRK, Kumar S. On the mechanism of phase transfer catalysis in Brust-schiffrin synthesis of metal nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:14756-14762. [PMID: 24215516 DOI: 10.1021/la403652k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The two-phase Brust-Schiffrin method (BSM) is used to synthesize highly stable nanoparticles of noble metals. A phase transfer catalyst (PTC) is used to bring in aqueous phase soluble precursors into the organic phase to enable particle synthesis there. Two different mechanisms for phase transfer are advanced in the literature. The first mechanism considers PTC to bring in an aqueous phase soluble precursor by complexing with it. The second mechanism considers the ionic species to be contained in inverse micelles of PTC, with a water core inside. A comprehensive experimental study involving measurement of interfacial tension, viscosity, water content by Karl-Fischer titration, static light scattering, (1)H NMR, and small-angle X-ray scattering is reported in this work to establish that the phase transfer catalyst tetraoctylammonium bromide transfers ions by complexing with them, instead of encapsulating them in inverse micelles. The findings have implications for particle synthesis in two-phase methods such as BSM and their modification to produce more monodispersed particles.
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Yu Y, Yao Q, Luo Z, Yuan X, Lee JY, Xie J. Precursor engineering and controlled conversion for the synthesis of monodisperse thiolate-protected metal nanoclusters. NANOSCALE 2013; 5:4606-20. [PMID: 23598432 DOI: 10.1039/c3nr00464c] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In very recent years, thiolate-protected metal nanoclusters (or thiolated MNCs) with core sizes smaller than 2 nm have emerged as a new direction in nanoparticle research due to their discrete and size dependent electronic structures and molecular-like properties, such as HOMO-LUMO transitions in optical absorptions, quantized charging, and strong luminescence. Synthesis of monodisperse thiolated MNCs in sufficiently large quantities (up to several hundred micrograms) is necessary for establishing reliable size-property relationships and exploring potential applications. This Feature Article reviews recent progress in the development of synthetic strategies for the production of monodisperse thiolated MNCs. The preparation of monodisperse thiolated MNCs is viewed as an engineerable process where both the precursors (input) and their conversion chemistry (processing) may be rationally designed to achieve the desired outcome - monodisperse thiolated MNCs (output). Several strategies for tailoring the precursor and the conversion process are analyzed to arrive at a unifying understanding of the processes involved.
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Affiliation(s)
- Yong Yu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260
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