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Fenwick O, Coutiño-Gonzalez E, Richard F, Bonacchi S, Baekelant W, de Vos D, Roeffaers MBJ, Hofkens J, Samorì P. X-Ray-Induced Growth Dynamics of Luminescent Silver Clusters in Zeolites. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2002063. [PMID: 32484276 DOI: 10.1002/smll.202002063] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/24/2020] [Accepted: 04/28/2020] [Indexed: 06/11/2023]
Abstract
Herein, AlKα X-rays are used to drive the growth of luminescent silver clusters in zeolites. The growth of the silver species is tracked using Auger spectroscopy and fluorescence microscopy, by monitoring the evolution from their ions to luminescent clusters and then metallic, dark nanoparticles. It is shown that the growth rate in different zeolites is determined by the mobility of the silver ions in the framework and that the growth dynamics in calcined samples obeys the Hill-Langmuir equation for noncooperative binding. Comparison of the optical properties of X-ray-grown silver clusters with silver clusters formed by standard heat treatment indicates that the latter have a higher specificity toward the formation of luminescent clusters of a specific (small) nuclearity, whereas the former produce a wide distribution of cluster species as well as larger nanoparticles.
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Affiliation(s)
- Oliver Fenwick
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 Alleé Gaspard Monge, Strasbourg, F-67000, France
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London, E1 4NS, UK
| | - Eduardo Coutiño-Gonzalez
- Centro de Investigaciones en Óptica, A. C. Loma del Bosque 115, Colonia Lomas, del Campestre, León, Guanajuato, 37150, Mexico
| | - Fanny Richard
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 Alleé Gaspard Monge, Strasbourg, F-67000, France
| | - Sara Bonacchi
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 Alleé Gaspard Monge, Strasbourg, F-67000, France
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo, 1, Padova, 35131, Italy
| | - Wouter Baekelant
- Chem&Tech-Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F, Leuven, B-3001, Belgium
| | - Dirk de Vos
- cMACS, Department of Microbial and Molecular Systems, KU Leuven, Celestijnenlaan, 200F, Heverlee, 3001, Belgium
| | - Maarten B J Roeffaers
- cMACS, Department of Microbial and Molecular Systems, KU Leuven, Celestijnenlaan, 200F, Heverlee, 3001, Belgium
| | - Johan Hofkens
- Chem&Tech-Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200F, Leuven, B-3001, Belgium
| | - Paolo Samorì
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 Alleé Gaspard Monge, Strasbourg, F-67000, France
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2
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Ren K, Xu X, Yao Z, Chen X, Hu T, Li P, Fan X, Du J, Qiao X, Qian G. Temperature dependent molecular fluorescence of [Ag m] n+ quantum clusters stabilized by phosphate glass networks. Phys Chem Chem Phys 2020; 22:21307-21316. [PMID: 32935686 DOI: 10.1039/d0cp03828h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Molecule like silver quantum clusters ([Agm]n+ QCs) exhibit an ultrasmall size confinement resulting in efficient broadband fluorescence. However, free [Agm]n+ QCs are also chemically active, so their stabilization is required for practical applications. We report in this work a phosphate oxyfluoride glass network enabled stabilization strategy of [Agm]n+ QCs. A series of silver-doped P2O5-ZnF2-xAg glasses were prepared by a conventional melt-and-quench method. The NMR and XPS results reveal that two types of [P(O,F)4] tetrahedrons (Q1, Q2) form chain structures and Zn(iv) connects [P(O,F)4] chains into a 3-dimension network in the glasses. The frameworks with limited void spaces were designed to restrict the polymerization degree, m, of [Agm]n+ QCs; the negatively charged tetrahedrons were designed to restrict the charge, n, of [Agm]n+ QCs. Through optical and mass spectroscopy studies, silver quantum clusters, [Ag2]2+ and [Ag4]2+, were identified to be charge compensated by [ZnO4] tetrahedrons and surrounded with [P(O,F)4] complex anions. The fluorescence thus gives high quantum efficiencies of 55.2% and 83.4%, for P2O5-ZnF2-xAg glass stabilized [Ag2]2+ and [Ag4]2+ QCs, respectively. This further reveals that the peak fixed fluorescence of [Ag2]2+ and [Ag4]2+ can be described by molecular fluorescence mechanisms. These are parity-allowed singlet-singlet transitions (S1 → S0), parity-forbidden triplet-singlet transitions (T1 → S0) and intersystem crossings between singlets (S1) and triplets (T1). The phonon coupled intersystem crossing between singlets (S1) and triplets (T1) determines the phosphate stabilized [Ag4]2+ QCs to exhibit a series of temperature dependent fluorescence behaviors. These include fluorescence intensity (at 50-200 K), intensity ratio (FIR) (at 50-200 K), peak shift (at 100-300 K) and lifetime (at 300-450 K) with maximum sensitivities of 1.27% K-1, 0.94% K-1, 0.29% K-1 and 0.41% K-1, respectively. Therefore, phosphate stabilized [Ag4]2+ QCs can be applied as temperature sensing probes, especially at low temperatures (10-300 K) and for color-based visualized temperature sensors.
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Affiliation(s)
- Kai Ren
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Xiuxia Xu
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Zeyu Yao
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Xiaotong Chen
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Tian Hu
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Pengcheng Li
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Xianping Fan
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Jincheng Du
- Department of Materials Science and Engineering, University of North Texas, Denton, Texas 76203-5017, USA
| | - Xvsheng Qiao
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Guodong Qian
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
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3
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Chen X, Zhao J, Xu X, Ren K, Luo X, Sun X, Qiao X, Fan X, Qian G, Han G. Phase separation strategy to facilely form fluorescent [Ag2]2+/[Agm]n+ quantum clusters in boro-alumino-silicate multiphase glasses. Phys Chem Chem Phys 2018; 20:23942-23947. [DOI: 10.1039/c8cp04536d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ag+, [Ag2]2+ and [Agm]n+ are well partitioned and stabilized in different sub-phases of the glasses to achieve high fluorescence QYs.
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4
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Ma R, Zhao J, Chen X, Qiao X, Fan X, Du J, Zhang X. Stabilization of ultra-small [Ag2]2+ and [Agm]n+ nano-clusters through negatively charged tetrahedrons in oxyfluoride glass networks: To largely enhance the luminescence quantum yields. Phys Chem Chem Phys 2017; 19:22638-22645. [DOI: 10.1039/c7cp02531a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sub-nanometer [Ag2]2+ and [Agm]n+ were highly stabilized in inorganic glass to achieve heavy doping and high luminescence QYs.
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Affiliation(s)
- Ronghua Ma
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Junjie Zhao
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Xiaotong Chen
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Xvsheng Qiao
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Xianping Fan
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Jincheng Du
- Department of Materials Science and Engineering
- University of North Texas
- Denton
- USA
| | - Xianghua Zhang
- Laboratory of Glasses and Ceramics
- Institute of Chemical Science UMR CNRS 6226
- University of Rennes 1
- 35042 Rennes
- France
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5
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Fares H, Castro T, Orives JR, Franco DF, Nalin M. White light and multicolor emission tuning in Ag nanocluster doped fluorophosphate glasses. RSC Adv 2017. [DOI: 10.1039/c7ra08778k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The emission properties of Ag NCs dispersed in a fluorophosphate glass have been studied. White light is generated under UV excitation due to the presence of a variety of Ag NCs with different sizes, emitting in the blue, green and red regions.
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Affiliation(s)
- Hssen Fares
- Institute of Chemistry
- São Paulo State University
- UNESP
- Araraquara
- Brazil
| | - Tarcio Castro
- Institute of Chemistry
- São Paulo State University
- UNESP
- Araraquara
- Brazil
| | | | | | - Marcelo Nalin
- Institute of Chemistry
- São Paulo State University
- UNESP
- Araraquara
- Brazil
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6
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Fares H, Santos SNC, Santos MV, Franco DF, Souza AE, Manzani D, Mendonça CR, Nalin M. Highly luminescent silver nanocluster-doped fluorophosphate glasses for microfabrication of 3D waveguides. RSC Adv 2017. [DOI: 10.1039/c7ra11792b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Highly photoluminescent glasses were prepared by embedding silver nanoclusters (Ag NCs) in a fluorophosphate matrix using a melt-quenching method.
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Affiliation(s)
- H. Fares
- Institute of Chemistry
- São Paulo State University
- UNESP
- Araraquara
- Brazil
| | - S. N. C. Santos
- São Carlos Institute of Physics
- University of São Paulo
- IFSC-USP
- São Carlos
- Brazil
| | - M. V. Santos
- São Carlos Institute of Physics
- University of São Paulo
- IFSC-USP
- São Carlos
- Brazil
| | - D. F. Franco
- Institute of Chemistry
- São Paulo State University
- UNESP
- Araraquara
- Brazil
| | - A. E. Souza
- Institute of Chemistry
- São Paulo State University
- UNESP
- Araraquara
- Brazil
| | - D. Manzani
- Institute of Chemistry of São Carlos
- University of São Paulo
- São Carlos
- Brazil
| | - C. R. Mendonça
- São Carlos Institute of Physics
- University of São Paulo
- IFSC-USP
- São Carlos
- Brazil
| | - M. Nalin
- Institute of Chemistry
- São Paulo State University
- UNESP
- Araraquara
- Brazil
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7
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Fenwick O, Coutiño-Gonzalez E, Grandjean D, Baekelant W, Richard F, Bonacchi S, De Vos D, Lievens P, Roeffaers M, Hofkens J, Samorì P. Tuning the energetics and tailoring the optical properties of silver clusters confined in zeolites. NATURE MATERIALS 2016; 15:1017-1022. [PMID: 27270964 DOI: 10.1038/nmat4652] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Accepted: 05/04/2016] [Indexed: 06/06/2023]
Abstract
The integration of metal atoms and clusters in well-defined dielectric cavities is a powerful strategy to impart new properties to them that depend on the size and geometry of the confined space as well as on metal-host electrostatic interactions. Here, we unravel the dependence of the electronic properties of metal clusters on space confinement by studying the ionization potential of silver clusters embedded in four different zeolite environments over a range of silver concentrations. Extensive characterization reveals a strong influence of silver loading and host environment on the cluster ionization potential, which is also correlated to the cluster's optical and structural properties. Through fine-tuning of the zeolite host environment, we demonstrate photoluminescence quantum yields approaching unity. This work extends our understanding of structure-property relationships of small metal clusters and applies this understanding to develop highly photoluminescent materials with potential applications in optoelectronics and bioimaging.
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Affiliation(s)
- Oliver Fenwick
- ISIS &icFRC, Université de Strasbourg &CNRS, 8, allée Gaspard Monge, 67000 Strasbourg, France
| | | | - Didier Grandjean
- Laboratory of Solid State Physics and Magnetism, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
| | - Wouter Baekelant
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Fanny Richard
- ISIS &icFRC, Université de Strasbourg &CNRS, 8, allée Gaspard Monge, 67000 Strasbourg, France
| | - Sara Bonacchi
- ISIS &icFRC, Université de Strasbourg &CNRS, 8, allée Gaspard Monge, 67000 Strasbourg, France
| | - Dirk De Vos
- Department of Microbial and Molecular Systems, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Peter Lievens
- Laboratory of Solid State Physics and Magnetism, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
| | - Maarten Roeffaers
- Department of Microbial and Molecular Systems, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Johan Hofkens
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Paolo Samorì
- ISIS &icFRC, Université de Strasbourg &CNRS, 8, allée Gaspard Monge, 67000 Strasbourg, France
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Ghosh K, Iqubal MA, Molla RA, Mishra A, Kamaluddin K, Islam SM. Direct oxidative esterification of alcohols and hydration of nitriles catalyzed by a reusable silver nanoparticle grafted onto mesoporous polymelamine formaldehyde (AgNPs@mPMF). Catal Sci Technol 2015. [DOI: 10.1039/c4cy01278j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxidative esterification and hydration of nitriles are catalyzed by a newly synthesized AgNPs@mPMF. The catalyst is well characterized and reusable.
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Affiliation(s)
- Kajari Ghosh
- Department of Chemistry
- University of Kalyani
- Kalyani, Nadia
- India
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