1
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Tang M, Zhang L, Song X, Zhao L. Developing an Electrochemically Reversible Switch for Modulating the Optical Signal of Gold Nanoparticles. Molecules 2023; 28:6233. [PMID: 37687062 PMCID: PMC10488341 DOI: 10.3390/molecules28176233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/17/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023] Open
Abstract
Gold nanoparticles (AuNPs) possess remarkable optical properties and electrical conductivity, making them highly relevant in various fields such as medical diagnoses, biological imaging, and electronic sensors. However, the existing methods for modulating the optical properties of AuNPs are often under limitations such as a high cost, the complexity of detection, a narrow range of application settings, and irreversibility. In this study, we propose a novel approach to address these challenges by constructing a reversible electrochemical switch. The switch (ITO-OMAD) involves covalently linking nitroxide radicals and AuNPs (AuNPs-NO•), followed by tethering this nanocomposite to a siloxane-derived indium tin oxide (ITO) electrode. By simply electrochemically oxidizing/reducing the nitroxide units, one is able to reversibly modulate the optical properties of AuNPs at will. The surface morphology and structure of the as-prepared ITO-OMAD electrode were characterized through scanning electron microscopy (SEM) and cyclic voltammetry (CV). SEM imaging confirmed the successful anchoring of AuNPs on the ITO electrode. Electrochemical tests performed in the three-electrode system demonstrated that the local surface plasmon resonance (LSPR) of AuNPs can be reversibly regulated by alternatively imposing ± 0.5V (vs. Ag/AgCl) to the modified electrode. The development of this electrochemical switch presents a novel approach to effectively control the optical properties of AuNPs. The further exploration and utilization of this reversible electrochemical switch could significantly enhance the versatility and practicality of AuNPs in numerous applications.
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Affiliation(s)
| | | | | | - Long Zhao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China; (M.T.); (L.Z.); (X.S.)
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2
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Hopmann E, Zhang W, Li H, Elezzabi AY. Advances in electrochromic device technology through the exploitation of nanophotonic and nanoplasmonic effects. NANOPHOTONICS 2023; 12:637-657. [PMID: 36844468 PMCID: PMC9945060 DOI: 10.1515/nanoph-2022-0670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 01/15/2023] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
Research regarding electrochromic (EC) materials, such materials that change their color upon application of an electrochemical stimulus, has been conducted for centuries. However, most recently, increasing efforts have been put into developing novel solutions to utilize these on-off switching materials in advanced nanoplasmonic and nanophotonic devices. Due to the significant change in dielectric properties of oxides such as WO3, NiO, Mn2O3 and conducting polymers like PEDOT:PSS and PANI, EC materials have transcended beyond simple smart window applications and are now found in plasmonic devices for full-color displays and enhanced modulation transmission and photonic devices with ultra-high on-off ratios and sensing abilities. Advancements in nanophotonic ECDs have further decreased EC switching speed by several orders of magnitude, allowing integration in real-time measurement and lab-on-chip applications. The EC nature of such nanoscale devices promises low energy consumption with low operating voltages paired with bistability and long lifetimes. We summarize these novel approaches to EC device design, lay out the current short comings and draw a path forward for future utilization.
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Affiliation(s)
- Eric Hopmann
- Ultrafast Optics and Nanophotonics Laboratory, Department of Electrical and Computer Engineering, University of Alberta, Edmonton, ABT6G 2V4, Canada
| | - Wu Zhang
- Ultrafast Optics and Nanophotonics Laboratory, Department of Electrical and Computer Engineering, University of Alberta, Edmonton, ABT6G 2V4, Canada
| | - Haizeng Li
- Optics & Thermal Radiation Research Center, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, Shandong266273, China
| | - Abdulhakem Y. Elezzabi
- Ultrafast Optics and Nanophotonics Laboratory, Department of Electrical and Computer Engineering, University of Alberta, Edmonton, ABT6G 2V4, Canada
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3
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Wang P, Krasavin AV, Liu L, Jiang Y, Li Z, Guo X, Tong L, Zayats AV. Molecular Plasmonics with Metamaterials. Chem Rev 2022; 122:15031-15081. [PMID: 36194441 PMCID: PMC9562285 DOI: 10.1021/acs.chemrev.2c00333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Molecular plasmonics, the area which deals with the interactions between surface plasmons and molecules, has received enormous interest in fundamental research and found numerous technological applications. Plasmonic metamaterials, which offer rich opportunities to control the light intensity, field polarization, and local density of electromagnetic states on subwavelength scales, provide a versatile platform to enhance and tune light-molecule interactions. A variety of applications, including spontaneous emission enhancement, optical modulation, optical sensing, and photoactuated nanochemistry, have been reported by exploiting molecular interactions with plasmonic metamaterials. In this paper, we provide a comprehensive overview of the developments of molecular plasmonics with metamaterials. After a brief introduction to the optical properties of plasmonic metamaterials and relevant fabrication approaches, we discuss light-molecule interactions in plasmonic metamaterials in both weak and strong coupling regimes. We then highlight the exploitation of molecules in metamaterials for applications ranging from emission control and optical modulation to optical sensing. The role of hot carriers generated in metamaterials for nanochemistry is also discussed. Perspectives on the future development of molecular plasmonics with metamaterials conclude the review. The use of molecules in combination with designer metamaterials provides a rich playground both to actively control metamaterials using molecular interactions and, in turn, to use metamaterials to control molecular processes.
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Affiliation(s)
- Pan Wang
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou310027, China.,Department of Physics and London Centre for Nanotechnology, King's College London, Strand, LondonWC2R 2LS, U.K.,Jiaxing Key Laboratory of Photonic Sensing & Intelligent Imaging, Jiaxing314000, China.,Intelligent Optics & Photonics Research Center, Jiaxing Research Institute, Zhejiang University, Jiaxing314000, China
| | - Alexey V Krasavin
- Department of Physics and London Centre for Nanotechnology, King's College London, Strand, LondonWC2R 2LS, U.K
| | - Lufang Liu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou310027, China
| | - Yunlu Jiang
- Department of Physics and London Centre for Nanotechnology, King's College London, Strand, LondonWC2R 2LS, U.K
| | - Zhiyong Li
- Jiaxing Key Laboratory of Photonic Sensing & Intelligent Imaging, Jiaxing314000, China.,Intelligent Optics & Photonics Research Center, Jiaxing Research Institute, Zhejiang University, Jiaxing314000, China
| | - Xin Guo
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou310027, China.,Jiaxing Key Laboratory of Photonic Sensing & Intelligent Imaging, Jiaxing314000, China.,Intelligent Optics & Photonics Research Center, Jiaxing Research Institute, Zhejiang University, Jiaxing314000, China
| | - Limin Tong
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou310027, China
| | - Anatoly V Zayats
- Department of Physics and London Centre for Nanotechnology, King's College London, Strand, LondonWC2R 2LS, U.K
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4
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El-Said WA, Qaisi RM, Placide V, Choi JW. A stable naked-eye colorimetric sensor for monitoring release of extracellular gamma-aminobutyric acid (GABA) neurotransmitter from SH-SY5Y cells. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 267:120517. [PMID: 34739892 DOI: 10.1016/j.saa.2021.120517] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 10/04/2021] [Accepted: 10/14/2021] [Indexed: 06/13/2023]
Abstract
A novel optical γ-aminobutyric acid (GABA)-based sensor was developed on interacting thiol compounds and o-phthalaldehyde (OPA) to form thiacetal compounds. Then, the thiacetal interacts with the GABA molecule to form an isoindole compound. The effects of four thiol compounds on the stability of the resulting isoindole compound were assessed. The 2-mercaptoethanol, "one of the most used derivatizing agents," is unexpectedly the least stable; while, 16-mercaptohexadecanoic acid resulted in the most durable isoindole compound. The developed sensor showed the capability for detecting GABA within a wide concentration range spanning from 500 nmol L-1 to 100 µmol L-1. The detection limit was about 330 nmol L-1, which indicated the high sensitivity of the developed sensor compared with those previously reported. The findings illustrated the ability to detect GABA at the physiological pH (pH = 7.4) without adjusting the pH value, opening the door for real applications. Furthermore, the sensor could detect various GABA concentrations in human serum with good recovery percentages (98% to 101.4%). In addition, this assay was applied to monitor GABA release from the SH-SY5Y cell line to convert glutamate into GABA. This result indicates the capability of the proposed assay for visually monitoring the release of GABA neurotransmitters.
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Affiliation(s)
- Waleed A El-Said
- Department of Chemistry, College of Science, University of Jeddah, P.O. Box 80327, Jeddah 21589, Saudi Arabia; Department of Chemical and Biomolecular Engineering, Sogang University, 35 Baekbeom-Ro, Mapo-Gu, Seoul 121-742, Republic of Korea; Department of Chemistry, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Ramy M Qaisi
- University of Jeddah, College of Engineering, Department of Electrical and Electronic Engineering, P.O. Box 80327, Jeddah 21589, Saudi Arabia
| | - Virginie Placide
- Department of Chemical and Biomolecular Engineering, Sogang University, 35 Baekbeom-Ro, Mapo-Gu, Seoul 121-742, Republic of Korea
| | - Jeong-Woo Choi
- Department of Chemical and Biomolecular Engineering, Sogang University, 35 Baekbeom-Ro, Mapo-Gu, Seoul 121-742, Republic of Korea.
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5
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Karst J, Floess M, Ubl M, Dingler C, Malacrida C, Steinle T, Ludwigs S, Hentschel M, Giessen H. Electrically switchable metallic polymer nanoantennas. Science 2021; 374:612-616. [PMID: 34709910 DOI: 10.1126/science.abj3433] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Julian Karst
- 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - Moritz Floess
- 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - Monika Ubl
- 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - Carsten Dingler
- IPOC-Functional Polymers, Institute of Polymer Chemistry and Center for Integrated Quantum Science and Technology (IQST), University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Claudia Malacrida
- IPOC-Functional Polymers, Institute of Polymer Chemistry and Center for Integrated Quantum Science and Technology (IQST), University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Tobias Steinle
- 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - Sabine Ludwigs
- IPOC-Functional Polymers, Institute of Polymer Chemistry and Center for Integrated Quantum Science and Technology (IQST), University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - Mario Hentschel
- 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - Harald Giessen
- 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
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6
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Lu W, Chow TH, Lai SN, Zheng B, Wang J. Electrochemical Switching of Plasmonic Colors Based on Polyaniline-Coated Plasmonic Nanocrystals. ACS APPLIED MATERIALS & INTERFACES 2020; 12:17733-17744. [PMID: 32195574 DOI: 10.1021/acsami.0c01562] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Plasmonic color generation has attracted much research interest because of the unique optical properties of plasmonic nanocrystals that are promising for chromatic applications, such as flat-panel displays, smart windows, and wearable devices. Low-cost, monodisperse plasmonic nanocrystals supporting strong localized surface plasmon resonances are favorable for the generation of plasmonic colors. However, many implementations so far have either a single static state or complexities in the particle alignment and switching mechanism for generating multiple displaying states. Herein, we report on a facile and robust approach for realizing the electrochemical switching of plasmonic colors out of colloidal plasmonic nanocrystals. The metal nanocrystals are coated with a layer of polyaniline, whose refractive index and optical absorption are reversibly switched through the variation of an applied electrochemical potential. The change in refractive index and optical absorption results in the modulation of the plasmonic scattering intensity with a depth of 11 dB. The electrochemical switching process is fast (∼5 ms) and stable (over 1000 switching cycles). A device configuration is further demonstrated for switching plasmonic color patterns in a transparent electrochemical device, which is made from indium tin oxide electrodes and a polyvinyl alcohol solid electrolyte. Our control of plasmonic colors provides a favorable platform for engineering low-cost and high-performance miniaturized optical devices.
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Affiliation(s)
- Wenzheng Lu
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Tsz Him Chow
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Sze Nga Lai
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Bo Zheng
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Jianfang Wang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
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7
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Peng J, Jeong HH, Lin Q, Cormier S, Liang HL, De Volder MFL, Vignolini S, Baumberg JJ. Scalable electrochromic nanopixels using plasmonics. SCIENCE ADVANCES 2019; 5:eaaw2205. [PMID: 31093530 PMCID: PMC6510554 DOI: 10.1126/sciadv.aaw2205] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 03/27/2019] [Indexed: 05/21/2023]
Abstract
Plasmonic metasurfaces are a promising route for flat panel display applications due to their full color gamut and high spatial resolution. However, this plasmonic coloration cannot be readily tuned and requires expensive lithographic techniques. Here, we present scalable electrically driven color-changing metasurfaces constructed using a bottom-up solution process that controls the crucial plasmonic gaps and fills them with an active medium. Electrochromic nanoparticles are coated onto a metallic mirror, providing the smallest-area active plasmonic pixels to date. These nanopixels show strong scattering colors and are electrically tunable across >100-nm wavelength ranges. Their bistable behavior (with persistence times exceeding hundreds of seconds) and ultralow energy consumption (9 fJ per pixel) offer vivid, uniform, nonfading color that can be tuned at high refresh rates (>50 Hz) and optical contrast (>50%). These dynamics scale from the single nanoparticle level to multicentimeter scale films in subwavelength thickness devices, which are a hundredfold thinner than current displays.
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Affiliation(s)
- Jialong Peng
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK
| | - Hyeon-Ho Jeong
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK
| | - Qianqi Lin
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK
| | - Sean Cormier
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK
| | - Hsin-Ling Liang
- NanoManufacturing Group, Department of Engineering, University of Cambridge, Cambridge CB3 0FS, UK
| | - Michael F. L. De Volder
- NanoManufacturing Group, Department of Engineering, University of Cambridge, Cambridge CB3 0FS, UK
| | - Silvia Vignolini
- Bio-inspired Photonics Group, Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
| | - Jeremy J. Baumberg
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK
- Corresponding author.
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8
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Pensa E, Gargiulo J, Lauri A, Schlücker S, Cortés E, Maier SA. Spectral Screening of the Energy of Hot Holes over a Particle Plasmon Resonance. NANO LETTERS 2019; 19:1867-1874. [PMID: 30789274 DOI: 10.1021/acs.nanolett.8b04950] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Plasmonic hot carriers have been recently identified as key elements for photocatalysis at visible wavelengths. The possibility to transfer energy between metal plasmonic nanoparticles and nearby molecules depends not only on carrier generation and collection efficiencies but also on their energy at the metal-molecule interface. Here an energy screening study was performed by monitoring the aniline electro-polymerization reaction via an illuminated 80 nm gold nanoparticle. Our results show that plasmon excitation reduces the energy required to start the polymerization reaction as much as 0.24 eV. Three possible photocatalytic mechanisms were explored: the enhanced near field of the illuminated particle, the temperature increase at the metal-liquid interface, and the excited electron-hole pairs. This last phenomenon is found to be the one contributing most prominently to the observed energy reduction.
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Affiliation(s)
- Evangelina Pensa
- The Blackett Laboratory, Department of Physics , Imperial College London , London SW7 2AZ , United Kingdom
| | - Julian Gargiulo
- The Blackett Laboratory, Department of Physics , Imperial College London , London SW7 2AZ , United Kingdom
| | - Alberto Lauri
- The Blackett Laboratory, Department of Physics , Imperial College London , London SW7 2AZ , United Kingdom
| | - Sebastian Schlücker
- Chair of Physical Chemistry I, Department of Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) , University of Duisburg-Essen , Universitätsstraße 5, 45141 Essen , Germany
| | - Emiliano Cortés
- The Blackett Laboratory, Department of Physics , Imperial College London , London SW7 2AZ , United Kingdom
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics , Ludwig-Maximilians-Universität München , 80539 München , Germany
| | - Stefan A Maier
- The Blackett Laboratory, Department of Physics , Imperial College London , London SW7 2AZ , United Kingdom
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics , Ludwig-Maximilians-Universität München , 80539 München , Germany
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9
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Xiong K, Tordera D, Jonsson MP, Dahlin AB. Active control of plasmonic colors: emerging display technologies. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2019; 82:024501. [PMID: 30640724 DOI: 10.1088/1361-6633/aaf844] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In recent years there has been a growing interest in the use of plasmonic nanostructures for color generation, a technology that dates back to ancient times. Plasmonic structural colors have several attractive features but once the structures are prepared the colors are normally fixed. Lately, several concepts have emerged for actively tuning the colors, which opens up for many new potential applications, the most obvious being novel color displays. In this review we summarize recent progress in active control of plasmonic colors and evaluate them with respect to performance criteria for color displays. It is suggested that actively controlled plasmonic colors are generally less interesting for emissive displays but could be useful for new types of electrochromic devices relying on ambient light (electronic paper). Furthermore, there are several other potential applications such as images to be revealed on demand and colorimetric sensors.
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Affiliation(s)
- Kunli Xiong
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 41296 Göteborg, Sweden
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10
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11
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Simoncelli S, Pensa EL, Brick T, Gargiulo J, Lauri A, Cambiasso J, Li Y, Maier SA, Cortés E. Monitoring plasmonic hot-carrier chemical reactions at the single particle level. Faraday Discuss 2019; 214:73-87. [PMID: 30810127 DOI: 10.1039/c8fd00138c] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Plasmon excitation in metal nanoparticles triggers the generation of highly energetic charge carriers that, when properly manipulated and exploited, can mediate chemical reactions. Single-particle techniques are key to unearthing the underlying mechanisms of hot-carrier generation, transport and injection, as well as to disentangling the role of the temperature increase and the enhanced near-field at the nanoparticle-molecule interface. Gaining nanoscopic insight into these processes and their interplay could aid in the rational design of plasmonic photocatalysts. Here, we present three different approaches to monitor hot-carrier reactivity at the single-particle level. We use a combination of dark-field microscopy and photoelectrochemistry to track a hot-hole driven reaction on a single Au nanoparticle. We image hot-electron reactivity with sub-particle spatial resolution using nanoscopy techniques. Finally, we push the limits by looking for a hot-electron induced chemical reaction that generates a fluorescent product, which should enable imaging plasmonic photocatalysis at the single-particle and single-molecule levels.
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Affiliation(s)
- Sabrina Simoncelli
- The Blackett Laboratory, Department of Physics, Imperial College London, London SW7 2AZ, UK.
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12
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Stiévenard D, Guérin D, Lenfant S, Lévêque G, Nijhuis CA, Vuillaume D. Electrical detection of plasmon-induced isomerization in molecule-nanoparticle network devices. NANOSCALE 2018; 10:23122-23130. [PMID: 30512021 DOI: 10.1039/c8nr07603k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We use a network of molecularly linked gold nanoparticles (NPSAN: nanoparticle self-assembled network) to demonstrate the electrical detection (conductance variation) of plasmon-induced isomerization (PII) of azobenzene derivatives (azobenzene bithiophene: AzBT). We show that PII is more efficient in a 3D-like NPSAN (cluster-NPSAN) than in a purely two-dimensional NPSAN (i.e., a monolayer of AzBT functionalized Au NPs). By comparison with the usual optical (UV-visible light) isomerization of AzBT, PII shows faster (a factor > ∼10) isomerization kinetics. Possible PII mechanisms are discussed: electric field-induced isomerization, two-phonon process, and plasmon-induced resonance energy transfer (PIRET), the latter being the most likely.
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Affiliation(s)
- Didier Stiévenard
- Institute of Electronics, Microelectronics and Nanotechnology (IEMN), CNRS, Université de Lille, Avenue Poincaré, F-59652 cedex, Villeneuve d'Ascq, France.
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13
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Shao L, Zhuo X, Wang J. Advanced Plasmonic Materials for Dynamic Color Display. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1704338. [PMID: 29125645 DOI: 10.1002/adma.201704338] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 09/02/2017] [Indexed: 05/12/2023]
Abstract
Plasmonic structures exhibit promising applications in high-resolution and durable color generation. Research on advanced hybrid plasmonic materials that allow dynamically reconfigurable color control has developed rapidly in recent years. Some of these results may give rise to practically applicable reflective displays in living colors with high performance and low power consumption. They will attract broad interest from display markets, compared with static plasmonic color printing, for example, in applications such as digital signage, full-color electronic paper, and electronic device screens. In this progress report, the most promising recent examples of utilizing advanced plasmonic materials for the realization of dynamic color display are highlighted and put into perspective. The performances, advantages, and disadvantages of different technologies are discussed, with emphasis placed on both the potential and possible limitations of various hybrid materials for dynamic plasmonic color display.
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Affiliation(s)
- Lei Shao
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Xiaolu Zhuo
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Jianfang Wang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
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14
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Cao Y, Zhou H, Qian RC, Liu J, Ying YL, Long YT. Analysis of the electron transfer properties of carbon quantum dots on gold nanorod surfaces via plasmonic resonance scattering spectroscopy. Chem Commun (Camb) 2018; 53:5729-5732. [PMID: 28492627 DOI: 10.1039/c7cc01464c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Carbon quantum dot wrapped gold nanorods were fabricated on an ITO electrode surface via electrostatic interactions. The electron transfer properties of carbon quantum dots on gold nanorod surfaces were systematically investigated by plasmonic resonance scattering spectroscopy.
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Affiliation(s)
- Yue Cao
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.
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15
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Affiliation(s)
- Nina Jiang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 852, China
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, China
| | - Xiaolu Zhuo
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 852, China
| | - Jianfang Wang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 852, China
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen 518057, China
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16
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Lacroix JC, Martin P, Lacaze PC. Tailored Surfaces/Assemblies for Molecular Plasmonics and Plasmonic Molecular Electronics. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2017; 10:201-224. [PMID: 28375704 DOI: 10.1146/annurev-anchem-061516-045325] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Molecular plasmonics uses and explores molecule-plasmon interactions on metal nanostructures for spectroscopic, nanophotonic, and nanoelectronic devices. This review focuses on tailored surfaces/assemblies for molecular plasmonics and describes active molecular plasmonic devices in which functional molecules and polymers change their structural, electrical, and/or optical properties in response to external stimuli and that can dynamically tune the plasmonic properties. We also explore an emerging research field combining molecular plasmonics and molecular electronics.
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Affiliation(s)
| | - Pascal Martin
- Department of Chemistry, University of Paris Diderot, ITODYS, Paris 75205, France;
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17
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Ma L, Xu S, Wang C, Wang H, Zou S, Su M. Electrically Modulated Localized Surface Plasmon around Self-Assembled-Monolayer-Covered Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:1437-1441. [PMID: 28110535 DOI: 10.1021/acs.langmuir.6b03537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This article reports the observation of electrical modulation of localized surface plasmon around self-assembled monolayer (SAM)-modified gold nanoparticles and the establishment of a new spectroscopy technique, that is, dynamic electro-optical spectroscopy (DEOS). The gold nanoparticles are deposited onto a transparent conductive substrate, and an electrical bias applied on the conductive substrate can cause shift of resonance plasmon response, where the direction of peak shift is related to the polarity of applied bias. The peak shift observed at 2.4 V is approximately ten times larger than those reported in previous work. It is postulated that significant peak shift is the result of reorientation of adsorbed water on electrode, which can change local dielectric environment of nanoparticles. An energy barrier is identified when adsorbed water molecules are turned from oxygen-down to oxygen-up. Frequency-dependent peak shifts on surface-modified gold nanoparticles show that reorientation is a fast reversible process with rich dynamics.
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Affiliation(s)
- Liyuan Ma
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University , Wenzhou, Zhejiang 325001, China
- Wenzhou Institute of Biomaterials and Engineering, CNITECH, CAS , Wenzhou, Zhejiang 325001 China
| | - Shandong Xu
- Department of Chemical Engineering, Northeastern University , Boston, Massachusetts 02115, United States
| | - Chaoming Wang
- Department of Chemistry, University of Central Florida , Orlando, Florida 32826, United States
- Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610030, China
| | - Haining Wang
- Department of Chemistry, University of Central Florida , Orlando, Florida 32826, United States
| | - Shengli Zou
- Department of Chemistry, University of Central Florida , Orlando, Florida 32826, United States
| | - Ming Su
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University , Wenzhou, Zhejiang 325001, China
- Wenzhou Institute of Biomaterials and Engineering, CNITECH, CAS , Wenzhou, Zhejiang 325001 China
- Department of Chemical Engineering, Northeastern University , Boston, Massachusetts 02115, United States
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18
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Lu W, Jiang N, Wang J. Active Electrochemical Plasmonic Switching on Polyaniline-Coated Gold Nanocrystals. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1604862. [PMID: 28004862 DOI: 10.1002/adma.201604862] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 11/19/2016] [Indexed: 06/06/2023]
Abstract
High-performance electrochemical plasmonic switching is realized on both single-particle and ensemble levels by coating polyaniline on colloidal gold nanocrystals through surfactant-assisted oxidative polymerization. Under small applied potentials, the core@shell nanostructures exhibit reversible plasmon shifts as large as 150 nm, a switching time of less than 10 ms, and a high switching stability.
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Affiliation(s)
- Wenzheng Lu
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Nina Jiang
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
| | - Jianfang Wang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
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19
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Li H, Dai H, Zhang Y, Tong W, Gao H, An Q. Surface-Enhanced Raman Spectra Promoted by a Finger Press in an All-Solid-State Flexible Energy Conversion and Storage Film. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201610737] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Haitao Li
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes; National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences; Beijing 100083 China
| | - Han Dai
- Yantai Nanshan University; Longkou Shandong Province 265713 China
| | - Yihe Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes; National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences; Beijing 100083 China
| | - Wangshu Tong
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes; National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences; Beijing 100083 China
| | - Hua Gao
- School of Science; China University of Geosciences; Beijing 100083 P.R. China
| | - Qi An
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes; National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences; Beijing 100083 China
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20
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Li H, Dai H, Zhang Y, Tong W, Gao H, An Q. Surface-Enhanced Raman Spectra Promoted by a Finger Press in an All-Solid-State Flexible Energy Conversion and Storage Film. Angew Chem Int Ed Engl 2017; 56:2649-2654. [DOI: 10.1002/anie.201610737] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 12/19/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Haitao Li
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes; National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences; Beijing 100083 China
| | - Han Dai
- Yantai Nanshan University; Longkou Shandong Province 265713 China
| | - Yihe Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes; National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences; Beijing 100083 China
| | - Wangshu Tong
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes; National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences; Beijing 100083 China
| | - Hua Gao
- School of Science; China University of Geosciences; Beijing 100083 P.R. China
| | - Qi An
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes; National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences; Beijing 100083 China
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21
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Mahmoud MA. Reducing the photocatalysis induced by hot electrons of plasmonic nanoparticles due to tradeoff of photothermal heating. Phys Chem Chem Phys 2017; 19:32016-32023. [DOI: 10.1039/c7cp03855k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The photothermal heating by the plasmonic nanoparticles lowers their photocatalytic efficiency due to the desperation of the reacting materials.
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Affiliation(s)
- Mahmoud A. Mahmoud
- Chemical Engineering
- Department of Biomedical Engineering
- Department of Chemistry
- Department of Physics and Astronomy
- The University of Texas at San Antonio
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22
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Mahmoud MA. Silver Nanodisk Monolayers with Surface Coverage Gradients for Use as Optical Rulers and Protractors. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:11631-11638. [PMID: 27726401 DOI: 10.1021/acs.langmuir.6b03211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Colloidal silver nanodisks (AgNDs) are assembled into a monolayer with a coverage density gradient (CDG) on the surface of flat and cylindrical substrates using the Langmuir-Blodgett (LB) technique. Compressing the LB monolayers during transfer to the substrates causes the CDG assembly of the AgNDs. By functionalizing the AgNDs with poly(ethylene glycol), it is possible to control their order inside the LB monolayer assembly by changing the deposition surface pressure. Well-separated AgNDs, 2D aggregates with different numbers of particles, and highly packed 2D arrays are formed as the deposition surface pressure is increased. Localized surface plasmon resonance (LSPR) spectra collected at different separation distances from the highest coverage spot (HCS) of the CDG AgND arrays on a flat substrate are blue-shifted, and the shift increases systematically upon increasing the distance. The relationship among the LSPR peak position, the peak intensity at a fixed wavelength, and the corresponding separation distance from the HCS is fitted exponentially. A similar systematic blue shift in the LSPR spectrum of the CDG AgND monolayer on a cylindrical substrate is obtained when the substrate is rotated at different angles relative to the HCS. The fabricated CDG AgND monolayers can potentially be used for optically measuring distances and angles.
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Affiliation(s)
- Mahmoud A Mahmoud
- School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States
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Abstract
In this review, we survey recent advances in the field of molecular plasmonics beyond the traditional sensing modality. Molecular plasmonics is explored in the context of the complex interaction between plasmon resonances and molecules and the ability of molecules to support plasmons self-consistently. First, spectroscopic changes induced by the interaction between molecular and plasmonic resonances are discussed, followed by examples of how tuning molecular properties leads to active molecular plasmonic systems. Next, the role of the position and polarizability of a molecular adsorbate on surface-enhanced Raman scattering signals is examined experimentally and theoretically. Finally, we introduce recent research focused on using molecules as plasmonic materials. Each of these examples is intended to highlight the role of molecules as integral components in coupled molecule-plasmon systems, as well as to show the diversity of applications in molecular plasmonics.
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Affiliation(s)
- Andrew J Wilson
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122;
| | - Katherine A Willets
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122;
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24
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Ledin PA, Jeon JW, Geldmeier JA, Ponder JF, Mahmoud MA, El-Sayed M, Reynolds JR, Tsukruk VV. Design of Hybrid Electrochromic Materials with Large Electrical Modulation of Plasmonic Resonances. ACS APPLIED MATERIALS & INTERFACES 2016; 8:13064-13075. [PMID: 27145297 DOI: 10.1021/acsami.6b02953] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present a rational approach to fabricating plasmonically active hybrid polymer-metal nanomaterials with electrochemical tunability of the localized surface plasmon resonances (LSPRs) of noble metal nanostructures embedded in an electroactive polymer matrix. The key requirement for being able to significantly modulate the LSPR band position is a close overlap between the refractive index change [Δn(λ)] of a stimuli-responsive polymeric matrix and the intrinsic LSPR bands. For this purpose, gold nanorods with a controlled aspect ratio, synthesized to provide high refractive index sensitivity while maintaining good oxidative stability, were combined with a solution-processable electroactive and electrochromic polymer (ECP): alkoxy-substituted poly(3,4-propylenedioxythiophene) [PProDOT(CH2OEtHx)2]. Spectral characteristics of the ECP, in particular the Δn(λ) variation, were evaluated as the material was switched between oxidized and reduced states. We fabricated ultrathin plasmonic electrochromic hybrid films consisting of gold nanorods and ECP that exhibited a large, stable, and reversible LSPR modulation of up to 25-30 nm with an applied electrical potential. Finite-difference time-domain (FDTD) simulations confirm a good match between the experimentally measured refractive index change in the ECP and the plasmonic response during electrochemical modulations.
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Affiliation(s)
- Petr A Ledin
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States
| | - Ju-Won Jeon
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States
| | - Jeffrey A Geldmeier
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States
| | - James F Ponder
- School of Chemistry and Biochemistry, School of Materials Science and Engineering, Center for Organic Photonics and Electronics, and Georgia Tech Polymer Network, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States
| | - Mahmoud A Mahmoud
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States
| | - Mostafa El-Sayed
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States
| | - John R Reynolds
- School of Chemistry and Biochemistry, School of Materials Science and Engineering, Center for Organic Photonics and Electronics, and Georgia Tech Polymer Network, Georgia Institute of Technology , Atlanta, Georgia 30332-0400, United States
| | - Vladimir V Tsukruk
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States
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25
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Zhou H, Liu Q, Rawson FJ, Ma W, Li DW, Li D, Long YT. Optical monitoring of faradaic reaction using single plasmon-resonant nanorods functionalized with graphene. Chem Commun (Camb) 2016; 51:3223-6. [PMID: 25604333 DOI: 10.1039/c4cc07939f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Real-time optical monitoring of the electron-transfer process was achieved and modulated on individual gold nanoparticles functionalized with graphene. We found that charge accumulation on single gold nanorods (GNRs) depends on the rate of Faradaic reaction, which is synchronized with double-layer charging.
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Affiliation(s)
- Hao Zhou
- Key Laboratory for Advanced Materials & Department of Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.
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26
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Reversible Switched Detection of Dihydroxybenzenes Using a Temperature-sensitive Electrochemical Sensing Film. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.01.183] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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27
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Yin A, He Q, Lin Z, Luo L, Liu Y, Yang S, Wu H, Ding M, Huang Y, Duan X. Plasmonic/Nonlinear Optical Material Core/Shell Nanorods as Nanoscale Plasmon Modulators and Optical Voltage Sensors. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201508586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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28
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Khajuria R, Dham S, Kapoor KK. Active methylenes in the synthesis of a pyrrole motif: an imperative structural unit of pharmaceuticals, natural products and optoelectronic materials. RSC Adv 2016. [DOI: 10.1039/c6ra03411j] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Pyrrole is one of the most important azaheterocycles, due to its wide range of applications in pharmaceuticals and optoelectronic materials, coupled with its utility as an intermediate in natural products.
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Affiliation(s)
| | - Sumita Dham
- Government College for Women, Parade
- Jammu-180001
- India
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29
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Jing C, Gu Z, Long YT. Imaging electrocatalytic processes on single gold nanorods. Faraday Discuss 2016; 193:371-385. [DOI: 10.1039/c6fd00069j] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Imaging electrochemical processes has attracted increasing attention in past decades. Particularly, monitoring electrochemical reactions rapidly at the nano-scale is still a challenge due to the ultra-low current detection and long scanning time required. The development of optical techniques provide a new way to demonstrate electrochemical processes through optical signals which enhance sensitivity and spatial resolution. Herein, we developed a novel method to image electrocatalytic processes on single gold nanorods (GNRs) during Cyclic Voltammetry (CV) scanning based on plasmon resonance scattering information by using dark-field microscopy. The electrocatalytic oxidation of hydrogen peroxide was selected as a typical reaction and the catalytic mechanism was revealed using the obtained spectra. Notably, observation on single GNRs avoided the averaging effects in bulk systems and confirmed that the individual nanoparticles had variable catalytic properties with different spectral change during the reaction process. Furthermore, a color-amplified system was introduced to convert light intensity into imaging information via the Matlab program which was able to image thousands of nanoparticles simultaneously. This approach offered the statistical intensity distribution of all of the nanoparticles in a dark-field image which dramatically enhanced the detection accuracy and avoided random events.
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Affiliation(s)
- Chao Jing
- Key
- Laboratory for Advanced Materials and Department of Chemistry East China University of Science and Technology
- Shanghai 200237
- P. R. China
- Physik-Department E20 Technische Universität München
| | - Zhen Gu
- Key
- Laboratory for Advanced Materials and Department of Chemistry East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Yi-Tao Long
- Key
- Laboratory for Advanced Materials and Department of Chemistry East China University of Science and Technology
- Shanghai 200237
- P. R. China
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30
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Tiu BDB, Pernites RB, Foster EL, Advincula RC. Conducting polymer–gold co-patterned surfaces via nanosphere lithography. J Colloid Interface Sci 2015; 459:86-96. [DOI: 10.1016/j.jcis.2015.08.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 07/22/2015] [Accepted: 08/03/2015] [Indexed: 10/23/2022]
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31
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Yin A, He Q, Lin Z, Luo L, Liu Y, Yang S, Wu H, Ding M, Huang Y, Duan X. Plasmonic/Nonlinear Optical Material Core/Shell Nanorods as Nanoscale Plasmon Modulators and Optical Voltage Sensors. Angew Chem Int Ed Engl 2015; 55:583-7. [DOI: 10.1002/anie.201508586] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 10/29/2015] [Indexed: 11/08/2022]
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32
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Zhong L, Jiang Y, Liow C, Meng F, Sun Y, Chandran BK, Liang Z, Jiang L, Li S, Chen X. Highly Sensitive Electro-Plasmonic Switches Based on Fivefold Stellate Polyhedral Gold Nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:5395-5401. [PMID: 26313565 DOI: 10.1002/smll.201501627] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 07/06/2015] [Indexed: 06/04/2023]
Abstract
Electron-photon coupling in metal nanostructures has raised a new trend for active plasmonic switch devices in both fundamental understanding and technological applications. However, low sensitivity switches with an on/off ratio less than 5 have restricted applications. In this work, an electrically modulated plasmonic switch based on a surface-enhanced Raman spectroscopy (SERS) system with a single fivefold stellate polyhedral gold nanoparticle (FSPAuNP) is reported. The reversible switch of the SERS signal shows high sensitivity with an on/off ratio larger than 30. Such a high on/off ratio arises primarily from the plasmonic resonance shift of the FSPAuNP with the incident laser due to the altered free electron density on the nanoparticle under an applied electrochemical potential. This highly sensitive electro-plasmonic switch may enable further development of plasmonic devices.
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Affiliation(s)
- Liubiao Zhong
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu, 215123, China
| | - Yueyue Jiang
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - Chihao Liow
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - Fanben Meng
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - Yinghui Sun
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - Bevita K Chandran
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - Ziqiang Liang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu, 215123, China
| | - Lin Jiang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu, 215123, China
| | - Shuzhou Li
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - Xiaodong Chen
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
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33
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Nguyen VQ, Schaming D, Martin P, Lacroix JC. Large-area plasmonic electrodes and active plasmonic devices generated by electrochemical processes. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.02.139] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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34
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Jiang X, Liu R, Tang P, Li W, Zhong H, Zhou Z, Zhou J. Controllably tuning the near-infrared plasmonic modes of gold nanoplates for enhanced optical coherence imaging and photothermal therapy. RSC Adv 2015. [DOI: 10.1039/c5ra15204f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Ozone can be used to precisely tailor the plasmon mode of gold triangular nanoprism for enhancing optical imaging and therapy.
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Affiliation(s)
- Xueqin Jiang
- Biomedical Engineering Department
- School of Engineering
- Sun Yat-sen University
- Guangzhou 510275
- China
| | - Renming Liu
- State Key Laboratory of Optoelectronic Materials and Technologies
- School of Physics and Engineering
- Sun Yat-sen University
- Guangzhou 510275
- China
| | - Peijun Tang
- Biomedical Engineering Department
- School of Engineering
- Sun Yat-sen University
- Guangzhou 510275
- China
| | - Wanbo Li
- Biomedical Engineering Department
- School of Engineering
- Sun Yat-sen University
- Guangzhou 510275
- China
| | - Huixiang Zhong
- Biomedical Engineering Department
- School of Engineering
- Sun Yat-sen University
- Guangzhou 510275
- China
| | - Zhangkai Zhou
- State Key Laboratory of Optoelectronic Materials and Technologies
- School of Physics and Engineering
- Sun Yat-sen University
- Guangzhou 510275
- China
| | - Jianhua Zhou
- Biomedical Engineering Department
- School of Engineering
- Sun Yat-sen University
- Guangzhou 510275
- China
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35
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Shao L, Tao Y, Ruan Q, Wang J, Lin HQ. Comparison of the plasmonic performances between lithographically fabricated and chemically grown gold nanorods. Phys Chem Chem Phys 2015; 17:10861-70. [DOI: 10.1039/c5cp00715a] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The plasmonic performances of lithographic and chemical gold nanorods are quantitatively examined and compared through both experiments and electrodynamic simulations.
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Affiliation(s)
- Lei Shao
- Department of Physics
- The Chinese University of Hong Kong
- Hong Kong SAR
- China
| | - Yuting Tao
- Department of Physics
- The Chinese University of Hong Kong
- Hong Kong SAR
- China
| | - Qifeng Ruan
- Department of Physics
- The Chinese University of Hong Kong
- Hong Kong SAR
- China
| | - Jianfang Wang
- Department of Physics
- The Chinese University of Hong Kong
- Hong Kong SAR
- China
| | - Hai-Qing Lin
- Beijing Computational Science Research Center
- Beijing 100084
- China
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36
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Baba A, Imazu K, Yoshida A, Tanaka D, Tamada K. Surface plasmon resonance properties of silver nanoparticle 2D sheets on metal gratings. SPRINGERPLUS 2014; 3:284. [PMID: 24944880 PMCID: PMC4059854 DOI: 10.1186/2193-1801-3-284] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 05/08/2014] [Indexed: 11/10/2022]
Abstract
Grating-coupled propagating surface plasmons associated with silver-nanoparticle 2D crystalline sheets exhibit sensitive plasmonic resonance tuning. Multilayered silver-nanoparticle 2D crystalline sheets are fabricated on gold or silver grating surfaces by the Langmuir- Blodgett method. We show that the deposition of Ag crystalline nanosheets on Au or Ag grating surfaces causes a drastic change in propagating surface plasmon resonance (SPR) both in angle measurements at fixed wavelengths and in fixed incident-angle mode by irradiation of white light. The dielectric constant of the multilayered silver nanosheet is estimated by a rigorous coupled-wave analysis. We find that the dielectric constant drastically increases as the number of silver-nanosheet layers increases. The experimentally obtained SP dispersions of Ag crystalline nanosheets on Au and Ag gratings are compared with the calculated SP dispersion curves. The drastic change in the surface plasmon resonance caused by the deposition of Ag-nanoparticle 2D crystalline sheets on metal grating surfaces suggests the potential for applications in highly sensitive sensors or for plasmonic devices requiring greatly enhanced electric fields.
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Affiliation(s)
- Akira Baba
- Center for Transdisciplinary Research, Niigata University, 8050 Ikarashi 2-nocho, Nishi-ku, Niigata, 950-2181 Japan
| | - Keisuke Imazu
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Akihito Yoshida
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Daisuke Tanaka
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
| | - Kaoru Tamada
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581 Japan
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37
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Jiang N, Shao L, Wang J. (Gold nanorod core)/(polyaniline shell) plasmonic switches with large plasmon shifts and modulation depths. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:3282-3289. [PMID: 24591117 DOI: 10.1002/adma.201305905] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Revised: 01/19/2014] [Indexed: 06/03/2023]
Abstract
(Gold nanorod core)/(polyaniline shell) nanostructures are prepared for functioning as active plasmonic switches. The single core/shell nanostructures exhibit a remarkable switching performance, with the modulation depth and scattering peak shift reaching 10 dB and 100 nm, respectively. The nanostructures are also deposited on substrates to form macroscale monolayers with remarkable ensemble plasmonic switching performances.
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Affiliation(s)
- Nina Jiang
- Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
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38
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Toma M, Jonas U, Mateescu A, Knoll W, Dostalek J. Active Control of SPR by Thermoresponsive Hydrogels for Biosensor Applications. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2013; 117:11705-11712. [PMID: 23762499 PMCID: PMC3677233 DOI: 10.1021/jp400255u] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 04/27/2013] [Indexed: 05/21/2023]
Abstract
The use of thermoresponsive poly(N-isopropylacrylamide)-based hydrogel (pNIPAAm) for rapid tuning of surface plasmon resonance (SPR) is reported. This approach is implemented by using an SPR layer architecture with an embedded indium tin oxide microheater and pNIPAAm film on its top. It takes advantage of rapid thermally induced swelling and collapse of pNIPAAm that is accompanied by large refractive index changes and leads to high thermo-optical coefficient of dn/dT = 2 × 10-2 RIU/K. We show that this material is excellently suited for efficient control of refractive index-sensitive SPR and that it can serve simultaneously as a 3D binding matrix in biosensor applications (if modified with biomolecular recognition elements for a specific capture of target analyte). We demonstrate that this approach enables modulating of the output signal in surface plasmon-enhanced fluorescence spectroscopy biosensors and holds potential for simple time-multiplexing of sensing channels for parallelized readout of fluorescence assays.
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Affiliation(s)
- Mana Toma
- AIT-Austrian Institute
of Technology, BioSensor Technologies, Muthgasse 11/2,
1190 Vienna, Austria
| | - Ulrich Jonas
- Macromolecular
Chemistry, University of Siegen, Department
Chemistry-Biology,
Adolf-Reichwein-Strasse 2, Siegen 57076, Germany
- Foundation for Research
and Technology Hellas (FORTH), Bio-Organic Materials
Chemistry Laboratory (BOMCLab), P.O. Box 1527, 71110 Heraklion, Crete,
Greece
| | - Anca Mateescu
- Foundation for Research
and Technology Hellas (FORTH), Bio-Organic Materials
Chemistry Laboratory (BOMCLab), P.O. Box 1527, 71110 Heraklion, Crete,
Greece
| | - Wolfgang Knoll
- AIT-Austrian Institute
of Technology, BioSensor Technologies, Muthgasse 11/2,
1190 Vienna, Austria
- Nanyang
Technological
University, Centre for Biomimetic Sensor Science, Singapore
637553
| | - Jakub Dostalek
- AIT-Austrian Institute
of Technology, BioSensor Technologies, Muthgasse 11/2,
1190 Vienna, Austria
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39
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Dou Y, Han J, Wang T, Wei M, Evans DG, Duan X. Temperature-controlled electrochemical switch based on layered double hydroxide/poly(N-isopropylacrylamide) ultrathin films fabricated via layer-by-layer assembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:9535-42. [PMID: 22650232 DOI: 10.1021/la3012603] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In this paper we report the fabrication of layered double hydroxide (LDH) nanoparticles/poly(N-isopropylacrylamide) (pNIPAM) ultrathin films (UTFs) via the layer-by-layer assembly technique, and their switchable electrocatalytic performance in response to temperature stimuli was demonstrated. X-ray diffraction and UV-vis absorption spectroscopy indicate a periodic layered structure with uniform and regular growth of the (LDH/pNIPAM)(n) UTFs; an interaction based on hydrogen bonding between LDH nanoparticles and pNIPAM was confirmed by X-ray-photoelectron spectroscopy and Fourier transform infrared spectroscopy. Temperature-triggered cyclic voltammetry and electrochemical impedance spectroscopy switch for the UTFs was obtained between 20 and 40 °C, accompanied by reversible changes in surface topography and film thickness revealed by atomic force microscopy and ellipsometry, respectively. The electrochemical on-off property of the temperature-controlled (LDH/pNIPAM)(n) UTFs originates from the contraction-expansion configuration of pNIPAM with low-high electrochemical impedance. In addition, a switchable electrocatalytic behavior of the (LDH/pNIPAM)(n) UTFs toward the oxidation of glucose was observed, resulting from the temperature-controlled charge transfer rate. Therefore, this work provides a facile approach for the design and fabrication of a well-ordered command interface with a temperature-sensitive property, which can be potentially applied in electrochemical sensors and switching.
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Affiliation(s)
- Yibo Dou
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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40
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Zheng Y, Wang A. Ag nanoparticle-entrapped hydrogel as promising material for catalytic reduction of organic dyes. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm32774k] [Citation(s) in RCA: 135] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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41
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Janin M, Ghilane J, Randriamahazaka H, Lacroix JC. Electrochemical fabrication of highly stable redox-active nanojunctions. Anal Chem 2011; 83:9709-14. [PMID: 22035379 DOI: 10.1021/ac202788y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Redox-gated molecular junctions were obtained starting with a relatively large gap between two electrodes, in the micrometer range, followed by electrochemical polymerization of aniline. Polyaniline (PANI) grows from the tip side until it bridges the two electrodes. The resulting junctions were characterized electrochemically by following the variation of the tip-substrate current as a function of the electrochemical gate potential for various bias voltages and by recording their I(V) characteristics. The two electrodes make contact through PANI wires, and microjunctions with conductances around 10(-3) S were obtained. On the basis of a similar setup, PANI nanojunctions with conductances between 10(-7) and 10(-8) S were made, where the current appears to be controlled by fewer than 10 oligoaniline strands. Despite the small number of strands connecting the two electrodes, the junctions are highly stable even when several successive potential sweeps are performed. Comparison of the conductance measured in the oxidized and reduced states leads to an on/off ratio of about 70-100, which is higher than that reported for a single aniline heptamer bridging two electrodes, highlighting the interest of connecting a few tens of molecules using the scanning electrochemical microscopy (SECM) configuration. In some cases, the switching of the PANI takes place in several individual conductance steps close to that obtained for a single oligoaniline. Finally, starting with a microjunction and mechanically withdrawing the tip shrinks it down to the nanometer scale and makes it possible to reach the regime where the conductance is controlled by a limited number of strands. This work presents an easy method for making redox-gated nanojunctions and for probing the conductance of a few oligoanilines despite an initially large tip-substrate gap.
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Affiliation(s)
- Marion Janin
- Université Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR 7086 CNRS, Paris, France
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42
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Zhao J, Zhang D, Zhao J. Fabrication of Cu–Ag core–shell bimetallic superfine powders by eco-friendly reagents and structures characterization. J SOLID STATE CHEM 2011. [DOI: 10.1016/j.jssc.2011.06.032] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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43
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Chen N, Qian X, Lin H, Liu H, Li Y, Li Y. Synthesis and characterization of axial heterojunction inorganic–organic semiconductor nanowire arrays. Dalton Trans 2011; 40:10804-8. [DOI: 10.1039/c1dt10926j] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Pingale SS. Molecular electrostatic potential for exploring π-conjugation: a density-functional investigation. Phys Chem Chem Phys 2011; 13:15158-65. [PMID: 21779585 DOI: 10.1039/c1cp20071b] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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MacKenzie R, Fraschina C, Sannomiya T, Auzelyte V, Vörös J. Optical sensing with simultaneous electrochemical control in metal nanowire arrays. SENSORS (BASEL, SWITZERLAND) 2010; 10:9808-30. [PMID: 22163441 PMCID: PMC3231022 DOI: 10.3390/s101109808] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Revised: 10/10/2010] [Accepted: 10/15/2010] [Indexed: 02/04/2023]
Abstract
This work explores the alternative use of noble metal nanowire systems in large-scale array configurations to exploit both the nanowires' conductive nature and localized surface plasmon resonance (LSPR). The first known nanowire-based system has been constructed, with which optical signals are influenced by the simultaneous application of electrochemical potentials. Optical characterization of nanowire arrays was performed by measuring the bulk refractive index sensitivity and the limit of detection. The formation of an electrical double layer was controlled in NaCl solutions to study the effect of local refractive index changes on the spectral response. Resonance peak shifts of over 4 nm, a bulk refractive index sensitivity up to 115 nm/RIU and a limit of detection as low as 4.5 × 10(-4) RIU were obtained for gold nanowire arrays. Simulations with the Multiple Multipole Program (MMP) confirm such bulk refractive index sensitivities. Initial experiments demonstrated successful optical biosensing using a novel form of particle-based nanowire arrays. In addition, the formation of an ionic layer (Stern-layer) upon applying an electrochemical potential was also monitored by the shift of the plasmon resonance.
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Affiliation(s)
- Robert MacKenzie
- Laboratory of Biosensors and Bioelectronics, ETH Zurich, Gloriastrasse 35, 8092 Zurich, Switzerland
| | - Corrado Fraschina
- Laboratory of Biosensors and Bioelectronics, ETH Zurich, Gloriastrasse 35, 8092 Zurich, Switzerland
| | - Takumi Sannomiya
- Laboratory of Biosensors and Bioelectronics, ETH Zurich, Gloriastrasse 35, 8092 Zurich, Switzerland
| | - Vaida Auzelyte
- Laboratory for Micro-/Nano-technology, Paul Scherrer Institute (PSI), 5232 Villigen, Switzerland
| | - Janos Vörös
- Laboratory of Biosensors and Bioelectronics, ETH Zurich, Gloriastrasse 35, 8092 Zurich, Switzerland
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46
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Stockhausen V, Martin P, Ghilane J, Leroux Y, Randriamahazaka H, Grand J, Felidj N, Lacroix JC. Giant Plasmon Resonance Shift Using Poly(3,4-ethylenedioxythiophene) Electrochemical Switching. J Am Chem Soc 2010; 132:10224-6. [DOI: 10.1021/ja103337d] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Verena Stockhausen
- Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris 7-Denis Diderot, UMR CNRS 7086, 15 rue Jean Antoine de Baïf, 75205 Paris cedex 13, France
| | - Pascal Martin
- Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris 7-Denis Diderot, UMR CNRS 7086, 15 rue Jean Antoine de Baïf, 75205 Paris cedex 13, France
| | - Jalal Ghilane
- Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris 7-Denis Diderot, UMR CNRS 7086, 15 rue Jean Antoine de Baïf, 75205 Paris cedex 13, France
| | - Yann Leroux
- Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris 7-Denis Diderot, UMR CNRS 7086, 15 rue Jean Antoine de Baïf, 75205 Paris cedex 13, France
| | - Hyacinthe Randriamahazaka
- Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris 7-Denis Diderot, UMR CNRS 7086, 15 rue Jean Antoine de Baïf, 75205 Paris cedex 13, France
| | - Johan Grand
- Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris 7-Denis Diderot, UMR CNRS 7086, 15 rue Jean Antoine de Baïf, 75205 Paris cedex 13, France
| | - Nordin Felidj
- Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris 7-Denis Diderot, UMR CNRS 7086, 15 rue Jean Antoine de Baïf, 75205 Paris cedex 13, France
| | - Jean Christophe Lacroix
- Interfaces, Traitements, Organisation et Dynamique des Systèmes, Université Paris 7-Denis Diderot, UMR CNRS 7086, 15 rue Jean Antoine de Baïf, 75205 Paris cedex 13, France
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47
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Negre CF, Sánchez CG. Effect of molecular adsorbates on the plasmon resonance of metallic nanoparticles. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.06.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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48
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Santos L, Martin P, Ghilane J, Lacaze PC, Randriamahazaka H, Abrantes LM, Lacroix JC. Electrosynthesis of well-organized nanoporous poly(3,4-ethylenedioxythiophene) by nanosphere lithography. Electrochem commun 2010. [DOI: 10.1016/j.elecom.2010.04.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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49
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Sannomiya T, Dermutz H, Hafner C, Vörös J, Dahlin AB. Electrochemistry on a localized surface plasmon resonance sensor. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:7619-7626. [PMID: 20020724 DOI: 10.1021/la9042342] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The optical signal of a localized surface plasmon resonance (LSPR)-based sensor combined with electrochemistry was investigated. Gold nanoparticles were immobilized on an indium tin oxide (ITO) substrate, which functioned as working electrode. Using cyclic voltammetry synchronized with LSPR sensing, surface reactions on gold were detected both electrically and optically. In the capacitive charging regime, optical signals linear to the applied potential were detected. Gold was found to be dissolved above the oxidation potential and partially redeposited during the reduction, which changed size and conformation of the gold nanoparticles. In kinetic measurements, slower potential establishment was observed at lower salt concentrations. Simulations by multiple multipole program (MMP) suggested the formation of a lossy layer by combination of charge depletion of gold and negative ion adsorption even below the reaction potential. We consider the results presented here of importance for any future sensors based on combined plasmonics and electrochemistry.
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Affiliation(s)
- Takumi Sannomiya
- Laboratory of Biosensors and Bioelectronics, Department of Information Technology and Electrical Engineering, ETH Zürich, Zürich, Switzerland
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50
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Haryono M, Kalisz M, Sibille R, Lescouëzec R, Fave C, Trippe-Allard G, Li Y, Seuleiman M, Rousselière H, Balkhy AM, Lacroix JC, Journaux Y. One dimensional assembly of Mn₆ single molecule magnets linked by oligothiophene bridges. Dalton Trans 2010; 39:4751-6. [PMID: 20422079 DOI: 10.1039/c0dt00043d] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new 1D coordination polymer comprised of [Mn(III)(6)O(2)(Et-sao)(6)(EtOH)(4)(H(2)O)(2)](2+) units and bithiophene dicarboxylato was synthesized by mixing EtsaoH(2) (salicylaldoxime), H(2)btda (2,2'-bithiophene-5,5'-dicarboxylic acid) and Mn(ClO(4))(2)·6H(2)O in the presence of NEt(4)OH. The crystal structure was determined and consists of Mn(6) clusters bridged by the bithiophene dicarboxylato ligands coordinated to two of the Mn(III) ions of the Mn(6) polynuclear complex. Direct current magnetic measurements show an overall ferromagnetic interaction between the Mn(III) ions within the Mn(6) cluster leading to an S = 12 ground state for the Mn(6) unit. Furthermore, this compound presents single-molecule magnet behaviour. Slow relaxation of the magnetization is observed at low temperature following a thermal activated regime with U(eff) approximately 50 K and tau(0) approximately 2.2 10(-10) s. The magnetic measurements do not show any noticeable interaction between the Mn(6) clusters through the bithiophene dicarboxylato bridges.
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Affiliation(s)
- Marco Haryono
- Institut Parisien de Chimie Moléculaire, UPMC Univ Paris 06, F-75252, Paris, France
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