1
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King RB. Systematics of stable copper and silver clusters protected by small bite chelating bidentate sulfur and selenium ligands related to their polyhedral cavities: analogies to aliphatic compounds and three-dimensional spherical aromatic systems. Dalton Trans 2024. [PMID: 38170867 DOI: 10.1039/d3dt03998f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Silver and copper clusters capped by external chelating dithiolate ligands can be classified according to the cavities in their central coinage metal polyhedra. Silver clusters composed exclusively of fused tetrahedra are analogous to simple saturated organic compounds. The only interstitial atom that can be fit into an Ag4 tetrahedron is hydrogen. Silver polyhedra with larger trigonal prismatic or cubic cavities, including highly distorted cubic cavities, can accommodate halide and chalcogenide anions. The still larger 12-vertex icosahedral and cuboctahedral coinage metal cavities can accommodate oxoanions of the types SO32- and SO42- and their heavier congeners or alternatively interstitial coinage or platinum group metals leading to central M'@M12 units. Copper clusters with central cuboctahedra and silver clusters with central icosahedra possessing interstitial metal atoms approximate sphericality and provide examples of electron-rich metal superatoms with an average metal oxidation state of less than +1. Such copper cluster superatoms have two extra electrons corresponding to a filled 1S2 superatomic orbital. The silver cluster superatoms are electron richer with eight extra electrons corresponding to filled 1S2 + 1P6 superatomic orbitals. In these silver clusters seven or eight faces of the central Ag12 icosahedron are capped by additional silver atoms in order to provide these additional electrons.
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Affiliation(s)
- R Bruce King
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, USA.
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2
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Nakashima T, Tanibe R, Yoshida H, Ehara M, Kuzuhara M, Kawai T. Self‐Regulated Pathway‐Dependent Chirality Control of Silver Nanoclusters. Angew Chem Int Ed Engl 2022; 61:e202208273. [DOI: 10.1002/anie.202208273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Takuya Nakashima
- Division of Materials Science Graduate School of Science and Technology Nara Institute of Science and Technology 8916-5 Takayama, Ikoma Nara 630-0192 Japan
- Department of Chemistry Graduate School of Science Osaka Metropolitan University 3-3-138 Sugimoto, Sumiyoshi-ku Osaka 558-8585 Japan
| | - Riku Tanibe
- Division of Materials Science Graduate School of Science and Technology Nara Institute of Science and Technology 8916-5 Takayama, Ikoma Nara 630-0192 Japan
| | - Hiroto Yoshida
- Division of Materials Science Graduate School of Science and Technology Nara Institute of Science and Technology 8916-5 Takayama, Ikoma Nara 630-0192 Japan
| | - Masahiro Ehara
- Research Center for Computational Science Institute for Molecular Science 38 Nishigo-Naka, Myodaiji Okazaki 444-8585 Japan
| | - Miwa Kuzuhara
- Division of Materials Science Graduate School of Science and Technology Nara Institute of Science and Technology 8916-5 Takayama, Ikoma Nara 630-0192 Japan
| | - Tsuyoshi Kawai
- Division of Materials Science Graduate School of Science and Technology Nara Institute of Science and Technology 8916-5 Takayama, Ikoma Nara 630-0192 Japan
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3
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Nakashima T, Tanibe R, Yoshida H, Ehara M, Kuzuhara M, Kawai T. Self‐regulated Pathway‐dependent Chirality Control of Silver Nanoclusters. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Takuya Nakashima
- Osaka Metropolitan University: Osaka Koritsu Daigaku Department of Chemistry, Graduate School of Science 3-3-138 SugimotoSumiyoshi-ku 558-8585 Osaka JAPAN
| | - Riku Tanibe
- Nara Institute of Science and Technology: Nara Sentan Kagaku Gijutsu Daigakuin Daigaku Division of Materials Science JAPAN
| | - Hiroto Yoshida
- Nara Institute of Science and Technology: Nara Sentan Kagaku Gijutsu Daigakuin Daigaku Division of Materials Science JAPAN
| | - Masahiro Ehara
- Bunshi Kagaku Kenkyujo Research Center for Computational Science JAPAN
| | - Miwa Kuzuhara
- Nara Institute of Science and Technology: Nara Sentan Kagaku Gijutsu Daigakuin Daigaku Division of Materials Science JAPAN
| | - Tsuyoshi Kawai
- Nara Institute of Science and Technology: Nara Sentan Kagaku Gijutsu Daigakuin Daigaku Division of Materials Science JAPAN
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4
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Fan H, Tong Z, Ren Z, Mishra K, Morita S, Edouarzin E, Gorla L, Averkiev B, Day VW, Hua DH. Synthesis and Characterization of Bimetallic Nanoclusters Stabilized by Chiral and Achiral Polyvinylpyrrolidinones. Catalytic C(sp 3)-H Oxidation. J Org Chem 2022; 87:6742-6759. [PMID: 35511477 DOI: 10.1021/acs.joc.2c00449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Second-generation chiral-substituted poly-N-vinylpyrrolidinones (CSPVPs) (-)-1R and (+)-1S were synthesized by free-radical polymerization of (3aR,6aR)- and (3aS,6aS)-5-ethenyl-tetrahydro-2,2-dimethyl-4H-1,3-dioxolo[4,5-c]pyrrol-4-one, respectively, using thermal and photochemical reactions. They were produced from respective d-isoascorbic acid and d-ribose. In addition, chiral polymer (-)-2 was also synthesized from the polymerization of (S)-3-(methoxymethoxy)-1-vinylpyrrolidin-2-one. Molecular weights of these chiral polymers were measured using HRMS, and the polymer chain tacticity was studied using 13C NMR spectroscopy. Chiral polymers (-)-1R, (+)-1S, and (-)-2 along with poly-N-vinylpyrrolidinone (PVP, MW 40K) were separately used in the stabilization of Cu/Au or Pd/Au nanoclusters. CD spectra of the bimetallic nanoclusters stabilized by (-)-1R and (+)-1S showed close to mirror-imaged CD absorption bands at wavelengths 200-300 nm, revealing that bimetallic nanoclusters' chiroptical responses are derived from chiral polymer-encapsulated nanomaterials. Chemo-, regio-, and stereo-selectivity was found in the catalytic C-H group oxidation reactions of complex bioactive natural products, such as ambroxide, menthofuran, boldine, estrone, dehydroabietylamine, 9-allogibberic acid, and sclareolide, and substituted adamantane molecules, when catalyst Cu/Au (3:1) or Pd/Au (3:1) stabilized by CSPVPs or PVP and oxidant H2O2 or t-BuOOH were applied. Oxidation of (+)-boldine N-oxide 23 using NMO as an oxidant yielded 4,5-dehydroboldine 27, and oxidation of (-)-9-allogibberic acid yielded C6,15 lactone 47 and C6-ketone 48.
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Affiliation(s)
- Huafang Fan
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Zongbo Tong
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Zhaoyang Ren
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Kanchan Mishra
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Shunya Morita
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Edruce Edouarzin
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Lingaraju Gorla
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Boris Averkiev
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Victor W Day
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Duy H Hua
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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5
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Chen Z, Lu X. Self-assembly of plasmonic chiral superstructures with intense chiroptical activity. NANO EXPRESS 2020. [DOI: 10.1088/2632-959x/abbb3d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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6
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Muhammed MAH, Cruz LK, Emwas A, El‐Zohry AM, Moosa B, Mohammed OF, Khashab NM. Pillar[5]arene‐Stabilized Silver Nanoclusters: Extraordinary Stability and Luminescence Enhancement Induced by Host–Guest Interactions. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906740] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Madathumpady Abubaker Habeeb Muhammed
- Smart Hybrid Materials Laboratory (SHMs) Advanced Membranes and Porous Materials Center King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Laila Khalil Cruz
- Smart Hybrid Materials Laboratory (SHMs) Advanced Membranes and Porous Materials Center King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Abdul‐Hamid Emwas
- Core Labs King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Ahmed M. El‐Zohry
- Division of Physical Science and Engineering (PSE) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Basem Moosa
- Smart Hybrid Materials Laboratory (SHMs) Advanced Membranes and Porous Materials Center King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Omar F. Mohammed
- Division of Physical Science and Engineering (PSE) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Niveen M. Khashab
- Smart Hybrid Materials Laboratory (SHMs) Advanced Membranes and Porous Materials Center King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
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7
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Muhammed MAH, Cruz LK, Emwas A, El‐Zohry AM, Moosa B, Mohammed OF, Khashab NM. Pillar[5]arene‐Stabilized Silver Nanoclusters: Extraordinary Stability and Luminescence Enhancement Induced by Host–Guest Interactions. Angew Chem Int Ed Engl 2019; 58:15665-15670. [DOI: 10.1002/anie.201906740] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/22/2019] [Indexed: 12/24/2022]
Affiliation(s)
- Madathumpady Abubaker Habeeb Muhammed
- Smart Hybrid Materials Laboratory (SHMs) Advanced Membranes and Porous Materials Center King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Laila Khalil Cruz
- Smart Hybrid Materials Laboratory (SHMs) Advanced Membranes and Porous Materials Center King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Abdul‐Hamid Emwas
- Core Labs King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Ahmed M. El‐Zohry
- Division of Physical Science and Engineering (PSE) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Basem Moosa
- Smart Hybrid Materials Laboratory (SHMs) Advanced Membranes and Porous Materials Center King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Omar F. Mohammed
- Division of Physical Science and Engineering (PSE) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Niveen M. Khashab
- Smart Hybrid Materials Laboratory (SHMs) Advanced Membranes and Porous Materials Center King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
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8
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Utembe W. Chirality, a neglected physico-chemical property of nanomaterials? A mini-review on the occurrence and importance of chirality on their toxicity. Toxicol Lett 2019; 311:58-65. [DOI: 10.1016/j.toxlet.2019.04.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 04/03/2019] [Accepted: 04/30/2019] [Indexed: 02/06/2023]
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9
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Olenin AY. Chemically Modified Silver and Gold Nanoparticles in Spectrometric Analysis. JOURNAL OF ANALYTICAL CHEMISTRY 2019. [DOI: 10.1134/s1061934819040099] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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10
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Chiral metal cluster and nanocluster complexes and their application in asymmetric catalysis. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2017.12.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Wei J, Guo Y, Li J, Yuan M, Long T, Liu Z. Optically Active Ultrafine Au–Ag Alloy Nanoparticles Used for Colorimetric Chiral Recognition and Circular Dichroism Sensing of Enantiomers. Anal Chem 2017; 89:9781-9787. [DOI: 10.1021/acs.analchem.7b01723] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Jianjia Wei
- Key Laboratory of Luminescent and Real-Time
Analytical Chemistry, Ministry of Education, College of
Pharmaceutical Sciences, Southwest University, Chongqing 400716, China
| | - Yanjia Guo
- Key Laboratory of Luminescent and Real-Time
Analytical Chemistry, Ministry of Education, College of
Pharmaceutical Sciences, Southwest University, Chongqing 400716, China
| | - Jizhou Li
- Key Laboratory of Luminescent and Real-Time
Analytical Chemistry, Ministry of Education, College of
Pharmaceutical Sciences, Southwest University, Chongqing 400716, China
| | - Mengke Yuan
- Key Laboratory of Luminescent and Real-Time
Analytical Chemistry, Ministry of Education, College of
Pharmaceutical Sciences, Southwest University, Chongqing 400716, China
| | - Tengfei Long
- Key Laboratory of Luminescent and Real-Time
Analytical Chemistry, Ministry of Education, College of
Pharmaceutical Sciences, Southwest University, Chongqing 400716, China
| | - Zhongde Liu
- Key Laboratory of Luminescent and Real-Time
Analytical Chemistry, Ministry of Education, College of
Pharmaceutical Sciences, Southwest University, Chongqing 400716, China
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12
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Chakraborty I, Pradeep T. Atomically Precise Clusters of Noble Metals: Emerging Link between Atoms and Nanoparticles. Chem Rev 2017; 117:8208-8271. [DOI: 10.1021/acs.chemrev.6b00769] [Citation(s) in RCA: 1305] [Impact Index Per Article: 186.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Indranath Chakraborty
- DST Unit of Nanoscience (DST
UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Thalappil Pradeep
- DST Unit of Nanoscience (DST
UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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13
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Ding W, Huang C, Guan L, Liu X, Luo Z, Li W. Water-soluble Au 13 clusters protected by binary thiolates: Structural accommodation and the use for chemosensing. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.03.036] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Ma W, Xu L, de Moura AF, Wu X, Kuang H, Xu C, Kotov NA. Chiral Inorganic Nanostructures. Chem Rev 2017; 117:8041-8093. [DOI: 10.1021/acs.chemrev.6b00755] [Citation(s) in RCA: 485] [Impact Index Per Article: 69.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | - André F. de Moura
- Department
of Chemistry, Federal University of São Carlos, CP 676, CEP 13.565-905, São Carlos, SP, Brazil
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15
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Khandelwal P, Poddar P. Fluorescent metal quantum clusters: an updated overview of the synthesis, properties, and biological applications. J Mater Chem B 2017; 5:9055-9084. [DOI: 10.1039/c7tb02320k] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A brief history of metal quantum clusters, their synthesis methods, physical properties, and an updated overview of their applications is provided.
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Affiliation(s)
- Puneet Khandelwal
- Physical & Materials Chemistry Division
- CSIR-National Chemical Laboratory
- Pune – 411008
- India
| | - Pankaj Poddar
- Physical & Materials Chemistry Division
- CSIR-National Chemical Laboratory
- Pune – 411008
- India
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16
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Kumar J, Kawai T, Nakashima T. Circularly polarized luminescence in chiral silver nanoclusters. Chem Commun (Camb) 2017; 53:1269-1272. [DOI: 10.1039/c6cc09476g] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Sets of mirror image circular dichroism (CD) and circularly polarized luminescence (CPL) spectra are for the first time demonstrated using enantiomeric dihydrolipoic acid (DHLA)-capped silver nanoclusters.
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Affiliation(s)
- Jatish Kumar
- Graduate School of Materials Science
- Nara Institute of Science and Technology
- Ikoma
- Japan
| | - Tsuyoshi Kawai
- Graduate School of Materials Science
- Nara Institute of Science and Technology
- Ikoma
- Japan
| | - Takuya Nakashima
- Graduate School of Materials Science
- Nara Institute of Science and Technology
- Ikoma
- Japan
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17
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Hidalgo F, Noguez C. How to control optical activity in organic-silver hybrid nanoparticles. NANOSCALE 2016; 8:14457-14466. [PMID: 27406401 DOI: 10.1039/c6nr02372j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The mechanisms that originate and control optical activity in organic-metal hybrid nanoparticles (NPs) are identified using a time-perturbed density functional theory. Electronic circular dichroism (CD) is studied in terms of the intrinsic chirality of the ligands, the number of ligands and the induced chirality by the arrangement of the ligands on the NP. Left-handed cysteine and achiral methylthio ligands adsorbed on an icosahedral silver NP are investigated. The analysis of CD allows the identification of the spectral regions when the induced chirality by the ligand array dominates over the intrinsic chirality of the ligands, determining conditions for CD control and enlargement. These results would be significant in the discussion of experimental CD spectra of organic-metal hybrid NPs, which might allow the development of new strategies to improve the sensitivity of chiroptical spectroscopies for the identification of bio and organic molecules.
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Affiliation(s)
- Francisco Hidalgo
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, Cd. de México C.P. 01000, Mexico.
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18
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Guo Y, Zhao X, Long T, Lin M, Liu Z, Huang C. Histidine-mediated synthesis of chiral fluorescence gold nanoclusters: insight into the origin of nanoscale chirality. RSC Adv 2015. [DOI: 10.1039/c5ra10985j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Strongly emitting chiral AuNCs are prepared and the origins of the optical activity are discussed from the viewpoint of the intrinsically chiral core model and the dissymmetric field effect.
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Affiliation(s)
- Yanjia Guo
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry
- Ministry of Education
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing 400715
| | - Xijuan Zhao
- College of Horticulture and Landscape Architecture
- Southwest University
- Chongqing 400715
- China
| | - Tengfei Long
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry
- Ministry of Education
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing 400715
| | - Min Lin
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry
- Ministry of Education
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing 400715
| | - Zhongde Liu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry
- Ministry of Education
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing 400715
| | - Chengzhi Huang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry
- Ministry of Education
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing 400715
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19
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Optical Properties and Chirality. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/b978-0-08-100086-1.00009-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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20
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Ghosh A, Hassinen J, Pulkkinen P, Tenhu H, Ras RHA, Pradeep T. Simple and Efficient Separation of Atomically Precise Noble Metal Clusters. Anal Chem 2014; 86:12185-90. [DOI: 10.1021/ac503165t] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Atanu Ghosh
- DST
Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE),
Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Jukka Hassinen
- Department
of Applied Physics, Aalto University (Helsinki University of Technology), Puumiehenkuja 2, FI-02150 Espoo, Finland
| | - Petri Pulkkinen
- Department
of Chemistry, University of Helsinki, P.O. Box 55, 00014 Helsinki, Finland
| | - Heikki Tenhu
- Department
of Chemistry, University of Helsinki, P.O. Box 55, 00014 Helsinki, Finland
| | - Robin H. A. Ras
- Department
of Applied Physics, Aalto University (Helsinki University of Technology), Puumiehenkuja 2, FI-02150 Espoo, Finland
| | - Thalappil Pradeep
- DST
Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE),
Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
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21
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Zheng K, Yuan X, Goswami N, Zhang Q, Xie J. Recent advances in the synthesis, characterization, and biomedical applications of ultrasmall thiolated silver nanoclusters. RSC Adv 2014. [DOI: 10.1039/c4ra12054j] [Citation(s) in RCA: 119] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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22
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Yoshida R, Matsumura T, Nakahodo T, Fujihara H. Plasmonic hybrid nanotubes of fullerene C60-polythiophene-silver or gold nanoparticles: fabrication and enhancement of the Raman scattering. Chem Commun (Camb) 2014; 50:15183-6. [DOI: 10.1039/c4cc07303g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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23
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Ghosh A, Pradeep T. Synthesis of Atomically Precise Silver Clusters by Using the Miscibility Principle. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402587] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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24
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Ganguly M, Mondal C, Pal J, Pal A, Negishi Y, Pal T. Fluorescent Au(i)@Ag2/Ag3giant cluster for selective sensing of mercury(ii) ion. Dalton Trans 2014; 43:11557-65. [DOI: 10.1039/c4dt01158a] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Xu Q, Kumar S, Jin S, Qian H, Zhu M, Jin R. Chiral 38-gold-atom nanoclusters: synthesis and chiroptical properties. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:1008-14. [PMID: 24155016 DOI: 10.1002/smll.201302279] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Indexed: 05/12/2023]
Abstract
Enantioselective synthesis of chiral Au38 nanoclusters is achieved with chiral 2-phenylpropane-1-thiol (abbreviated as R/S-PET, organic soluble), captopril and glutathione (water soluble) as the respective ligand. The circular dichroism (CD) spectra of Au38 (R-PET)24 and Au38 (S-PET)24 show multiple bands which are precisely mirror-imaged, while their normal optical absorption spectra are identical with each other and also superimposable with that of the racemic Au38 (SCH2 CH2 Ph)24 nanoclusters. The observed CD signals are not from the chiral ligands themselves (which only give rise to CD signals in the UV (<250 nm), rather than in the visible wavelength region). Chiral Au38 nanoclusters with different types of ligands are further compared. Although the Au38 core is intrinsically chiral, different chiral ligands are found to largely influence the chiroptical response of the overall nanocluster. Thus, the chiral response of ligand-protected nanoclusters has both contributions from the metal core and the ligand shell around it. These optically active nanoclusters hold promise in future applications such as chiral sensing and catalysis.
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Affiliation(s)
- Qian Xu
- Department of Chemistry, Anhui University, Hefei, Anhui, 230026, China
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26
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Liu YF, Wang L, Shi WZ, Zhang YH, Fang SM. Synthesis and characterization of chiral Ag2S and Ag2S–Zn nanocrystals. RSC Adv 2014. [DOI: 10.1039/c4ra08360a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Ag2S–Zn NCs exhibited tunable PL emission at 500–700 nm and a clear mirror-image relationship in their CD signals.
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Affiliation(s)
- Ying-Fan Liu
- Henan Provincial Key Laboratory of Surface and Interface Science
- China
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration
- Zhengzhou University of Light Industry
- Zhengzhou 450001, China
| | - Lei Wang
- Henan Provincial Key Laboratory of Surface and Interface Science
- China
| | - Wan-Zhen Shi
- Henan Provincial Key Laboratory of Surface and Interface Science
- China
| | - Yan-Hui Zhang
- Henan Provincial Key Laboratory of Surface and Interface Science
- China
| | - Shao-Ming Fang
- Henan Provincial Key Laboratory of Surface and Interface Science
- China
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration
- Zhengzhou University of Light Industry
- Zhengzhou 450001, China
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27
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Udayabhaskararao T, Bootharaju MS, Pradeep T. Thiolate-protected Ag₃₂ clusters: mass spectral studies of composition and insights into the Ag-thiolate structure from NMR. NANOSCALE 2013; 5:9404-9411. [PMID: 23959065 DOI: 10.1039/c3nr03463a] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Clusters composed of a 32 silver atom core, protected with thiolates of glutathione (GSH) and N-(2-mercaptopropionyl)glycine (MPGH), were synthesized by a solid-state route in milligram scale. They do not exhibit surface plasmon resonance unlike their larger sized nanoparticle analogues but show molecule-like features in absorption and luminescence spectra, falling in the visible window. The compositions Ag₃₂SG₁₉ (SG: thiolate of glutathione) and Ag₃₂MPG₁₉ (MPG: thiolate of MPGH) were identified from electrospray ionization mass spectrometry (ESI MS). Matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS) was not successful for -SG protected clusters as reported before, but for Ag₃₂MPG₁₉ a peak at 6.1 kDa was seen at a threshold laser intensity. This peak shifted to low mass region with increasing laser intensity due to systematic losses of Ag₂S. Further confirmation of the composition Ag₃₂SG₁₉ was made using various studies such as XPS and EDAX. One-dimensional (1D) and two-dimensional (2D) NMR spectroscopic investigations of Ag₃₂SG₁₉ provided interesting spectral features which indicated the dominant -[SR-Ag-SR]- structural motif. This structural motif as the predominant entity is found for the first time in silver clusters.
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Affiliation(s)
- T Udayabhaskararao
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Department of Chemistry, Indian Institute of Technology Madras, Chennai-600 036, India.
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28
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Meng X, Xu Q, Wang S, Zhu M. Ligand-exchange synthesis of selenophenolate-capped Au25 nanoclusters. NANOSCALE 2012; 4:4161-4165. [PMID: 22508477 DOI: 10.1039/c2nr30272a] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report the synthesis and characterization of selenophenolate-capped 25-gold-atom nanoclusters via a ligand-exchange approach. In this method, phenylethanethiolate (PhCH(2)CH(2)S) capped Au(25) nanoclusters are utilized as the starting material, which is subject to ligand-exchange with selenophenol (PhSeH). The as-obtained cluster product is confirmed to be selenophenolate-protected Au(25) nanoclusters through characterization by electrospray ionization (ESI) and matrix-assisted laser desorption ionization mass spectrometry (MALDI-MS), thermogravimetric analysis (TGA), elemental analysis (EA), UV-Vis and (1)H/(13)C NMR spectroscopies. The ligand-exchange synthesis of [Au(25)(SePh)(18)](-)[(C(8)H(17))(4)N](+) nanoclusters demonstrates that the core size of gold nanoclusters is retained in the thiolate-to-selenolate exchange process and that the 18 surface thiolate ligands can be completely exchanged by selenophenolate, rather than giving rise to a mixed ligand shell on the cluster. The two types of Au(25)L(18) (L = thiolate or selenolate) nanoclusters also show some differences in stability and optical properties.
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Affiliation(s)
- Xiangming Meng
- Department of Chemistry, Anhui University, Hefei, Anhui 230026, P. R. China
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29
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LEELAVATHI ANNAMALAI, BHASKARA RAO THUMUUDAYA, PRADEEP THALAPPIL. Ag7 AND Ag8 QUANTUM CLUSTERS SUPPORTED ON ALUMINA: NEW CATALYSTS FOR ORGANIC REACTIONS. INTERNATIONAL JOURNAL OF NANOSCIENCE 2012. [DOI: 10.1142/s0219581x11009271] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Silver quantum clusters (QCs) stabilized by mercaptosuccinic acid (MSA) have been synthesized at room temperature from Ag nanoparticles through an interfacial etching process. The as-synthesized red emitting QCs were coated on alumina and the supported clusters have been characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), energy dispersive analysis of X-rays (EDAX) and fluorescence spectroscopy. Catalytic activity of Ag QCs supported on alumina have been exploited for the reduction of 4-nitrophenol in presence of sodium borohydride. The reaction followed pseudo-first order kinetics. The catalyst separated from the product remains active and can be recycled several times. Other nitroaromatic compounds have also been tested. Synthesis of the solid phase catalyst, applications and detailed kinetic studies of the reduction of 4-nitrophenol are reported.
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Affiliation(s)
- ANNAMALAI LEELAVATHI
- DST Unit of Nanoscience (DST UNS), Department of Chemistry and Sophisticated, Analytical Instrument Facility, Indian Institute of Technology, Madras, Chennai 600 036, India
| | - THUMU UDAYA BHASKARA RAO
- DST Unit of Nanoscience (DST UNS), Department of Chemistry and Sophisticated, Analytical Instrument Facility, Indian Institute of Technology, Madras, Chennai 600 036, India
| | - THALAPPIL PRADEEP
- DST Unit of Nanoscience (DST UNS), Department of Chemistry and Sophisticated, Analytical Instrument Facility, Indian Institute of Technology, Madras, Chennai 600 036, India
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30
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Chakraborty I, Udayabhaskararao T, Pradeep T. High temperature nucleation and growth of glutathione protected ∼Ag75 clusters. Chem Commun (Camb) 2012; 48:6788-90. [DOI: 10.1039/c2cc33099g] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Moshe AB, Szwarcman D, Markovich G. Size dependence of chiroptical activity in colloidal quantum dots. ACS NANO 2011; 5:9034-43. [PMID: 21967095 DOI: 10.1021/nn203234b] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The synthesis of chiral penicillamine-capped CdS and CdSe quantum dots (QDs) was adjusted to control the size of the nanoparticles. This, together with size separation, allowed for simultaneous tuning of absorption, circular dichroism (CD), and fluorescence on a wide wavelength range. Band edge transitions were accompanied by circular dichroism peaks which red-shifted together with the increase in particle size. The clear correlation between absorption and CD bands as well as between absorption bands and size in semiconductor QDs was used to derive an experimental scaling law for optical activity. The decrease in the intensity of circular dichroism-to-absorption ratio (dissymmetry) with the increase in particle size was stronger than linear, probably exponential. In addition, strong material type dependence was observed. The CD line shape appeared to be sensitive to the nature of the transition and may thus serve as a tool for sorting out the electronic states of the QDs. Fluorescence-detected circular dichroism (FDCD) was introduced as a new probe of optically active fluorescent nanoparticles. The analysis of the size and material dependence of the chiroptical induction effect leads to the conclusion that it is primarily an electronic interaction effect between the adsorbed chiral molecules and the electron-hole states.
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Affiliation(s)
- Assaf Ben Moshe
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel-Aviv University, Tel-Aviv 69978, Israel
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32
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Xia Y, Zhou Y, Tang Z. Chiral inorganic nanoparticles: origin, optical properties and bioapplications. NANOSCALE 2011; 3:1374-82. [PMID: 21301709 DOI: 10.1039/c0nr00903b] [Citation(s) in RCA: 167] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Chirality of inorganic nanoparticles (NPs) is an emerging and hot topic in nanoresearch in the past several years. Many novel and interesting properties of chiral NPs have been explored and studied, which highlight their importance in both fundamental research and potential applications. This review summarizes recent progress in the study of origins, optical properties and bioapplications of chiral NPs, and future developments in this research area are also discussed.
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Affiliation(s)
- Yunsheng Xia
- Laboratory for Nanomaterials, National Center for Nanoscience and Technology, Beijing, 100190, China
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33
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Graf P, Mantion A, Haase A, Thünemann AF, Masić A, Meier W, Luch A, Taubert A. Silicification of peptide-coated silver nanoparticles--A Biomimetic soft chemistry approach toward chiral hybrid core-shell materials. ACS NANO 2011; 5:820-833. [PMID: 21291209 DOI: 10.1021/nn102969p] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Silica and silver nanoparticles are relevant materials for new applications in optics, medicine, and analytical chemistry. We have previously reported the synthesis of pH responsive, peptide-templated, chiral silver nanoparticles. The current report shows that peptide-stabilized nanoparticles can easily be coated with a silica shell by exploiting the ability of the peptide coating to hydrolyze silica precursors such as TEOS or TMOS. The resulting silica layer protects the nanoparticles from chemical etching, allows their inclusion in other materials, and renders them biocompatible. Using electron and atomic force microscopy, we show that the silica shell thickness and the particle aggregation can be controlled simply by the reaction time. Small-angle X ray scattering confirms the Ag/peptide@silica core-shell structure. UV-vis and circular dichroism spectroscopy prove the conservation of the silver nanoparticle chirality upon silicification. Biological tests show that the biocompatibility in simple bacterial systems is significantly improved once a silica layer is deposited on the silver particles.
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Affiliation(s)
- Philipp Graf
- Department of Chemistry, Klingelbergstrasse 80, University of Basel, CH-4056 Basel, Switzerland
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34
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Abstract
AbstractQuantum dots (QDs) are fluorescent semiconductor (e.g. II-VI) nanocrystals, which have a strong characteristic spectral emission. This emission is tunable to a desired energy by selecting variable particle size, size distribution and composition of the nanocrystals. QDs have recently attracted enormous interest due to their unique photophysical properties and range of potential applications in photonics and biochemistry.The main aim of our work is develop new materials based chiral quantum dots (QDs) and establish fundamental principles influencing the structure and properties of chiral QDs. Here we report the quantum efficiency control in cysteine capped CdTe quantum dots (QDs) by varying ratios of enantiomeric stabilizers. We also demonstrate that the circular dichroism (CD) of CdTe QDs can be introduced by utilizing the mixture of penicilamine and cysteine stabilizers of the same chirality. This approach results in QDs with the enhanced CD activity, but causes a decrease in the quantum yield and widening of the emission due to the presence of chiral defects at the nanoparticle surface. We believe that these new QDs could find important applications as fluorescent assays and sensors (or probes) in asymmetric synthesis, catalysis, enantioseparation, biochemical analysis and medical diagnostics.
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35
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Aikens CM. Electronic Structure of Ligand-Passivated Gold and Silver Nanoclusters. J Phys Chem Lett 2011; 2:99-104. [PMID: 26295527 DOI: 10.1021/jz101499g] [Citation(s) in RCA: 197] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Gold and silver nanoclusters have unique molecule-like electronic structure and a nonzero HOMO-LUMO gap. Recent advances in X-ray crystal structure determination have led to a new understanding of the geometric structure of gold nanoparticles, with significant implications for electronic structure. The superatom model has been effectively employed to explain properties such as one- and two-photon optical absorption, circular dichroism, EPR spectra, and electronic effects introduced by nanoparticle doping. Future investigations may also lead to an understanding of nanoparticle luminescence, excited-state dynamics, and the metallic to molecular transition.
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Affiliation(s)
- Christine M Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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36
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Shen JS, Li DH, Zhang MB, Zhou J, Zhang H, Jiang YB. Metal-metal-interaction-facilitated coordination polymer as a sensing ensemble: a case study for cysteine sensing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:481-486. [PMID: 21133345 DOI: 10.1021/la103153e] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A detailed investigation of the absorption and CD signals of Ag(I)-cysteine (Cys) aqueous solutions at buffered or varying pH has allowed us to suggest that coordination polymers are formed upon mixing Ag(I) and Cys bearing a Ag(I)-Cys repeat unit. The formation of the coordination polymers are shown to be facilitated by both the Ag(I)···Ag(I) interaction and the interaction between the side chains in the polymeric backbone. The former allows for an immediate spectral sensing of Cys with enantiomeric discrimination capacity with both high sensitivity and selectivity, and the contribution of the side-chain/side-chain interaction serves to guide extended sensing applications by means of modulating this interaction. With our preliminary data on the corresponding Cu(I)-Cys and Au(I)-Cys systems that exhibited similar spectral signals, we conclude that the M(I)-SR coordination polymers (M = Cu, Ag, or Au) could in general function as spectral sensing ensembles for extended applications. This sensing ensemble involves the formation of coordination polymers with practically no spectral background, thus affording high sensing sensitivity and selectivity.
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Affiliation(s)
- Jiang-Shan Shen
- Department of Chemistry, College of Chemistry and Chemical Engineering, and the MOE Key Laboratory of Analytical Sciences, Xiamen University, Xiamen 361005, China
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37
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Řezanka P, Záruba K, Král V. Supramolecular chirality of cysteine modified silver nanoparticles. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2010.11.015] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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38
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Negishi Y, Arai R, Niihori Y, Tsukuda T. Isolation and structural characterization of magic silver clusters protected by 4-(tert-butyl)benzyl mercaptan. Chem Commun (Camb) 2011; 47:5693-5. [DOI: 10.1039/c0cc05587e] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Xavier PL, Chaudhari K, Verma PK, Pal SK, Pradeep T. Luminescent quantum clusters of gold in transferrin family protein, lactoferrin exhibiting FRET. NANOSCALE 2010; 2:2769-76. [PMID: 20882247 DOI: 10.1039/c0nr00377h] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
We report the synthesis of highly luminescent, water soluble quantum clusters (QCs) of gold, which are stabilized by an iron binding transferrin family protein, lactoferrin (Lf). The synthesized AuQC@Lf clusters were characterized using UV-Visible spectroscopy, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), photoluminescence (PL), matrix assisted laser desorption ionization mass spectrometry (MALDI-MS), FTIR spectroscopy and circular dichroism (CD) spectroscopy along with picosecond-resolved lifetime measurements. Detailed investigations with FTIR and CD spectroscopy have revealed changes in the secondary structure of the protein in the cluster. We have also studied Förster resonance energy transfer (FRET) occurring between the protein and the cluster. The ability of the clusters to sense cupric ions selectively at ppm concentrations was tested. The stability of clusters in widely varying pH conditions and their continued luminescence make it feasible for them to be used for intracellular imaging and molecular delivery, particularly in view of Lf protection.
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Affiliation(s)
- Paulrajpillai Lourdu Xavier
- DST Unit on Nanoscience (DST UNS), Department of Chemistry and Sophisticated Analytical Instrument Facility, Indian Institute of Technology Madras, Chennai, 600 036, India
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40
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Knoppe S, Dharmaratne AC, Schreiner E, Dass A, Bürgi T. Ligand exchange reactions on Au(38) and Au(40) clusters: a combined circular dichroism and mass spectrometry study. J Am Chem Soc 2010; 132:16783-9. [PMID: 21067168 DOI: 10.1021/ja104641x] [Citation(s) in RCA: 135] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The thiolate-for-thiolate ligand exchange reaction between the stable Au(38)(2-PET)(24) and Au(40)(2-PET)(24) (2-PET: 2-phenylethanethiol) clusters and enantiopure BINAS (BINAS: 1,1'-binaphthyl-2,2'-dithiol) was investigated by circular dichroism (CD) spectroscopy in the UV/vis and MALDI mass spectrometry (MS). The ligand exchange reaction is incomplete, although a strong optical activity is induced to the resulting clusters. The clusters are found to be relatively stable, in contrast to similar reactions on [Au(25)(2-PET)(18)](-) clusters. Maximum anisotropy factors of 6.6 × 10(-4) are found after 150 h of reaction time. During the reaction, a varying ratio between Au(38) and Au(40) clusters is found, which significantly differs from the starting material. As compared to Au(38), Au(40) is more favorable to incorporate BINAS into its ligand shell. After 150 h of reaction time, an average of 1.5 and 4.5 BINAS ligands is found for Au(38) and Au(40) clusters, respectively. This corresponds to exchange of 3 and 9 monodentate 2-PET ligands. To show that the limited exchange with BINAS is due to the bidentate nature of the ligand, exchange with thiophenol was performed. The monodentate thiophenol exchange was found to be faster, and more ligands were exchanged when compared to BINAS.
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Affiliation(s)
- Stefan Knoppe
- Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
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41
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Rao TUB, Nataraju B, Pradeep T. Ag9 Quantum Cluster through a Solid-State Route. J Am Chem Soc 2010; 132:16304-7. [DOI: 10.1021/ja105495n] [Citation(s) in RCA: 230] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Thumu Udaya B. Rao
- DST Unit on Nanoscience (DST UNS), Department of Chemistry and Sophisticated Analytical Instrument Facility, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Bodappa Nataraju
- DST Unit on Nanoscience (DST UNS), Department of Chemistry and Sophisticated Analytical Instrument Facility, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Thalappil Pradeep
- DST Unit on Nanoscience (DST UNS), Department of Chemistry and Sophisticated Analytical Instrument Facility, Indian Institute of Technology Madras, Chennai 600 036, India
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42
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Hongjun E, Su P, Farooq MU, Yang Y. Microwave-Assisted Preparation of a β-Cyclodextrin-Based Stationary Phase for Open Tubular Capillary Electrochromatography. ANAL LETT 2010. [DOI: 10.1080/00032711003725532] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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43
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Bai X, Li X, Zheng L. Chiral ionic liquid monolayer-stabilized gold nanoparticles: synthesis, self-assembly, and application to SERS. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:12209-14. [PMID: 20499920 DOI: 10.1021/la101602a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Chiral ionic liquid monolayer-stabilized gold nanoparticles were synthesized in a two-phase liquid-liquid system and found to self-assemble into ringlike structures at the air/water interface. Control experiments with long-chain ILs revealed that the molecular structure of the CIL significantly affects the formation of the gold nanoparticle ring structures. A possible mechanism based on Marangoni-Bénard convection in evaporating droplets was proposed. These gold nanoparticle structures were shown to yield a large SERS enhancement for Rhodamine 6G.
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Affiliation(s)
- Xiangtao Bai
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, China
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44
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Affiliation(s)
- Hongjun Xiang
- Key Laboratory of Computational Physical Sciences (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, P. R. China, and National Renewable Energy Laboratory, Golden, Colorado 80401
| | - Su-Huai Wei
- Key Laboratory of Computational Physical Sciences (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, P. R. China, and National Renewable Energy Laboratory, Golden, Colorado 80401
| | - Xingao Gong
- Key Laboratory of Computational Physical Sciences (Ministry of Education) and Department of Physics, Fudan University, Shanghai 200433, P. R. China, and National Renewable Energy Laboratory, Golden, Colorado 80401
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45
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Udaya Bhaskara Rao T, Pradeep T. Luminescent Ag7 and Ag8 Clusters by Interfacial Synthesis. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200907120] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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46
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Udaya Bhaskara Rao T, Pradeep T. Luminescent Ag7 and Ag8 Clusters by Interfacial Synthesis. Angew Chem Int Ed Engl 2010; 49:3925-9. [DOI: 10.1002/anie.200907120] [Citation(s) in RCA: 247] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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47
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Abstract
The scientific study of gold nanoparticles (typically 1-100 nm) has spanned more than 150 years since Faraday's time and will apparently last longer. This review will focus on a special type of ultrasmall (<2 nm) yet robust gold nanoparticles that are protected by thiolates, so-called gold thiolate nanoclusters, denoted as Au(n)(SR)(m) (where, n and m represent the number of gold atoms and thiolate ligands, respectively). Despite the past fifteen years' intense work on Au(n)(SR)(m) nanoclusters, there is still a tremendous amount of science that is not yet understood, which is mainly hampered by the unavailability of atomically precise Au(n)(SR)(m) clusters and by their unknown structures. Nonetheless, recent research advances have opened an avenue to achieving the precise control of Au(n)(SR)(m) nanoclusters at the ultimate atomic level. The successful structural determination of Au(102)(SPhCOOH)(44) and [Au(25)(SCH(2)CH(2)Ph)(18)](q) (q = -1, 0) by X-ray crystallography has shed some light on the unique atomic packing structure adopted in these gold thiolate nanoclusters, and has also permitted a precise correlation of their structure with properties, including electronic, optical and magnetic properties. Some exciting research is anticipated to take place in the next few years and may stimulate a long-lasting and wider scientific and technological interest in this special type of Au nanoparticles.
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Affiliation(s)
- Rongchao Jin
- Carnegie Mellon University, Department of Chemistry, Pittsburgh, PA 15213, USA.
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48
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Yao H, Nishida N, Kimura K. Conformational study of chiral penicillamine ligand on optically active silver nanoclusters with IR and VCD spectroscopy. Chem Phys 2010. [DOI: 10.1016/j.chemphys.2009.12.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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49
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Nakashima T, Kobayashi Y, Kawai T. Optical activity and chiral memory of thiol-capped CdTe nanocrystals. J Am Chem Soc 2009; 131:10342-3. [PMID: 19588974 DOI: 10.1021/ja902800f] [Citation(s) in RCA: 140] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
CdTe nanocrystals (NCs) passivated with chiral ligands d- and l-cysteinemethylester hydrochloride were prepared and observed to exhibit characteristic CD profiles with symmetrical mirror images depending on the chirality of the capping ligand. The optical activity of CdTe NCs is shown to originate from the distorted CdS shell including chiral capping molecules. The chirality of the NC surface is maintained even after ligand exchange with an achiral thiol, providing an unprecedented chiral memory effect.
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Affiliation(s)
- Takuya Nakashima
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan.
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50
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Wu Z, Lanni E, Chen W, Bier ME, Ly D, Jin R. High Yield, Large Scale Synthesis of Thiolate-Protected Ag7 Clusters. J Am Chem Soc 2009; 131:16672-4. [DOI: 10.1021/ja907627f] [Citation(s) in RCA: 250] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Zhikun Wu
- Carnegie Mellon University, Department of Chemistry, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213
| | - Eric Lanni
- Carnegie Mellon University, Department of Chemistry, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213
| | - Wenqian Chen
- Carnegie Mellon University, Department of Chemistry, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213
| | - Mark E. Bier
- Carnegie Mellon University, Department of Chemistry, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213
| | - Danith Ly
- Carnegie Mellon University, Department of Chemistry, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213
| | - Rongchao Jin
- Carnegie Mellon University, Department of Chemistry, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213
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