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Lerch S, Reinhard BM. Spectral signatures of charge transfer in assemblies of molecularly-linked plasmonic nanoparticles. INTERNATIONAL JOURNAL OF MODERN PHYSICS. B 2017; 31:1740002. [PMID: 29391660 PMCID: PMC5788194 DOI: 10.1142/s0217979217400021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Self-assembly of functionalized nanoparticles (NPs) provides a unique class of nanomaterials for exploring and utilizing quantum-plasmonic effects that occur if the interparticle separation between NPs approaches a few nanometers and below. We review recent theoretical and experimental studies of plasmon coupling in self-assembled NP structures that contain molecular linkers between the NPs. Charge transfer through the interparticle gap of an NP dimer results in a significant blue-shift of the bonding dipolar plasmon (BDP) mode relative to classical electromagnetic predictions, and gives rise to new coupled plasmon modes, the so-called charge transfer plasmon (CTP) modes. The blue-shift of the plasmon spectrum is accompanied by a weakening of the electromagnetic field in the gap of the NPs. Due to an optical far-field signature that is sensitive to charge transfer across the gap, plasmonic molecules represent a sensor platform for detecting and characterizing gap conductivity in an optical fashion and for characterizing the role of molecules in facilitating the charge transfer across the gap.
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Affiliation(s)
- Sarah Lerch
- Department of Chemistry, Boston University, 8 Saint Mary's Street, Boston, MA 02215, USA. The Photonics Center, Boston University, 8 Saint Mary's Street, Boston, MA 02215, USA
| | - Björn M Reinhard
- Department of Chemistry, Boston University, 8 Saint Mary's Street, Boston, MA 02215, USA. The Photonics Center, Boston University, 8 Saint Mary's Street, Boston, MA 02215, USA
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2
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Abstract
SERS signal enhancements inside and outside the junctions of the dimers were experimentally calculated.
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Affiliation(s)
- Hyeokjin Yoon
- Department of Chemistry
- Seoul National University
- Seoul 08826
- Republic of Korea
| | - Jung Sang Suh
- Department of Chemistry
- Seoul National University
- Seoul 08826
- Republic of Korea
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3
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Yoon H, Suh JS. Universal substrates based on Ag colloidal particles for routine surface-enhanced Raman scattering spectral measurements. RSC Adv 2017. [DOI: 10.1039/c7ra04871h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
We developed a simple method to fabricate sensitive and stable substrates that can be used in the routine surface-enhanced Raman scattering (SERS) spectral measurements.
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Affiliation(s)
- Hyeokjin Yoon
- Department of Chemistry
- Seoul National University
- Seoul 08826
- Republic of Korea
| | - Jung Sang Suh
- Department of Chemistry
- Seoul National University
- Seoul 08826
- Republic of Korea
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Cheng ZQ, Nan F, Yang DJ, Zhong YT, Ma L, Hao ZH, Zhou L, Wang QQ. Plasmonic nanorod arrays of a two-segment dimer and a coaxial cable with 1 nm gap for large field confinement and enhancement. NANOSCALE 2015; 7:1463-1470. [PMID: 25503522 DOI: 10.1039/c4nr05544f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Seeking plasmonic nanostructures with large field confinement and enhancement is significant for photonic and electronic nanodevices with high sensitivity, reproducibility, and tunability. Here, we report the synthesis of plasmonic arrays composed of two-segment dimer nanorods and coaxial cable nanorods with ∼1 nm gap insulated by a self-assembled Raman molecule monolayer. The gap-induced plasmon coupling generates an intense field in the gap region of the dimer junction and the cable interlayer. As a result, the longitudinal plasmon resonance of nanorod arrays with high tunability is obviously enhanced. Most interestingly, the field enhancement of dimer nanorod arrays can be tuned by the length ratio L1/L2 of the two segments, and the maximal enhancement appears at L1/L2 = 1. In that case, the two-photon luminescence (TPL) of dimer nanorod arrays and the Raman intensity in the dimer junction is enhanced by 27 and 30 times, respectively, under resonant excitation. In the same way, the Raman intensity in the gap region is enhanced 16 times for the coaxial cable nanorod arrays. The plasmonic nanorod arrays synthesized by the facile method, having tunable plasmon properties and large field enhancement, indicate an attractive pathway to the photonic nanodevices.
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Affiliation(s)
- Zi-Qiang Cheng
- Key Laboratory of Artificial Micro- and Nano-structures of the Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, P.R. China
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Wang X, Du Y, Zhang H, Xu Y, Pan Y, Wu T, Hu H. Fast enrichment and ultrasensitive in-situ detection of pesticide residues on oranges with surface-enhanced Raman spectroscopy based on Au nanoparticles decorated glycidyl methacrylate–ethylene dimethacrylate material. Food Control 2014. [DOI: 10.1016/j.foodcont.2014.04.035] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Shu L, Zhou J, Yuan X, Petti L, Chen J, Jia Z, Mormile P. Highly sensitive immunoassay based on SERS using nano-Au immune probes and a nano-Ag immune substrate. Talanta 2014; 123:161-8. [DOI: 10.1016/j.talanta.2014.02.015] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 01/27/2014] [Accepted: 02/02/2014] [Indexed: 11/27/2022]
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Gu GH, Kim MY, Yoon HJ, Suh JS. Diameter Effect of Silver Nanorod Arrays to Surface-enhanced Raman Scattering. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.3.725] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Jo H, Sohn A, Shin KS, Kumar B, Kim JH, Kim DW, Kim SW. Novel architecture of plasmon excitation based on self-assembled nanoparticle arrays for photovoltaics. ACS APPLIED MATERIALS & INTERFACES 2014; 6:1030-1035. [PMID: 24328244 DOI: 10.1021/am4045585] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
An efficient approach to producing hexagonally self-assembled and well-dispersed gold (Au) nanoparticles (NPs) in the pores of porous anodic aluminum oxide (AAO) is reported. This approach is particularly useful for tuning the surface plasmon resonance frequency of Au NPs by varying the effective dielectric constant of AAO. A strongly enhanced Raman spectrum of dye molecule rhodamine 6G using these well-dispersed Au NPs revealed that such a self-assembled Au NP array can induce a strong plasmonic field. Furthermore, we demonstrated a new architecture of plasmon excitation in a bulk heterojunction (BHJ) inverted organic solar cell (IOSC) using the Au NP array with AAO. The optical response of an active layer poly(3-hexylthiophene):(6,6)-phenyl-C61-butyric acid methyl ester was enhanced by this strong plasmonic field associated a well-dispersed Au NP array. A comparative study of AAO with and without Au NPs confirmed plasmonic improvement of the BHJ IOSC. Simulation results showed that Au NPs concentrate the incoming light into a strongly localized field and enhance light absorption in a wide wavelength range.
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Affiliation(s)
- Hanggochnuri Jo
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU) , Suwon 440-746, Republic of Korea
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Chen X, Jiang C, Yu S. Nanostructured materials for applications in surface-enhanced Raman scattering. CrystEngComm 2014. [DOI: 10.1039/c4ce01383b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This highlight summarizes current advances in the design and the employment of nanostructured materials in SERS substrates especially from the dimensional point of view. We then talk about synthesis methods and the novel properties of these nanostructured materials with their potential applications in SERS.
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Affiliation(s)
- Xiaochun Chen
- School of Chemistry and Chemical Engineering
- Hefei University of Technology and Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering
- Hefei, China
| | - Changlong Jiang
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei, China
| | - Shaoming Yu
- School of Chemistry and Chemical Engineering
- Hefei University of Technology and Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering
- Hefei, China
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Giallongo G, Durante C, Pilot R, Garoli D, Bozio R, Romanato F, Gennaro A, Rizzi GA, Granozzi G. Growth and optical properties of silver nanostructures obtained on connected anodic aluminum oxide templates. NANOTECHNOLOGY 2012; 23:325604. [PMID: 22825487 DOI: 10.1088/0957-4484/23/32/325604] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Ag nanostructures are grown by AC electrodeposition on anodic alumina oxide (AAO) connected membranes acting as templates. Depending on the thickness of the template and on the voltage applied during the growth process, different Ag nanostructures with different optical properties are obtained. When AAO membranes about 1 μm thick are used, the Ag nanostructures consist in Ag nanorods, at the bottom of the pores, and Ag nanotubes departing from the nanorods and filling the pores almost for the whole length. When AAO membranes about 3 μm thick are used, the nanostructures are Ag spheroids, at the bottom of the pores, and Ag nanowires that do not reach the upper part of the alumina pores. The samples are characterized by angle resolved x-ray photoelectron spectroscopy, scanning electron microscopy and UV-vis and Raman spectroscopies. A simple NaOH etching procedure, followed by sonication in ethanol, allows one to obtain an exposed ordered array of Ag nanorods, suitable for surface-enhanced Raman spectroscopy, while in the other case (3 μm thick AAO membranes) the sample can be used in localized surface plasmon resonance sensing.
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Affiliation(s)
- G Giallongo
- Department of Chemical Sciences and INSTM Research Unit, University of Padova, Via Marzolo, 1, 35131 Padova, Italy
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Bae GT, Aikens CM. TDDFT and CIS Studies of Optical Properties of Dimers of Silver Tetrahedra. J Phys Chem A 2012; 116:8260-9. [DOI: 10.1021/jp305330e] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Gyun-Tack Bae
- Department of Chemistry, Kansas State University, 213 CBC Building, Manhattan,
Kansas 66506, United States
| | - Christine M. Aikens
- Department of Chemistry, Kansas State University, 213 CBC Building, Manhattan,
Kansas 66506, United States
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Lee S, Chon H, Yoon SY, Lee EK, Chang SI, Lim DW, Choo J. Fabrication of SERS-fluorescence dual modal nanoprobes and application to multiplex cancer cell imaging. NANOSCALE 2012; 4:124-9. [PMID: 22080302 DOI: 10.1039/c1nr11243k] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
We report a highly sensitive optical imaging technology using surface-enhanced Raman scattering (SERS)-fluorescence dual modal nanoprobes (DMNPs). Fluorescence microscopy is a well-known imaging technique that shows specific protein distributions within cells. However, most currently available fluorescent organic dyes have relatively weak emission intensities and are rapidly photo-bleached. Thus more sensitive and stable probes are needed. In this work we develop DMNPs, which can be used for both SERS and fluorescence detection. SERS detection is a powerful technique that allows ultrasensitive chemical or biochemical analysis through unlimited multiplexing and single molecule sensitivity. Combining advantages of fluorescence and SERS allows these dual modal nanostructures to be used as powerful probes for novel biomedical imaging. In this work, the fabrication and characterization of the SERS-fluorescence DMNPs and application to biological imaging were investigated using markers CD24 and CD44, which are co-expressed in MDA-MB-231 breast cancer cells, as a model system. SERS imaging with DMNPs was found to be a powerful tool to determine the co-localization of CD24 and CD44 in the cell.
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Affiliation(s)
- Sangyeop Lee
- Department of Bionano Engineering, Hanyang University, Ansan 426-791, South Korea
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Halas NJ, Lal S, Chang WS, Link S, Nordlander P. Plasmons in Strongly Coupled Metallic Nanostructures. Chem Rev 2011; 111:3913-61. [DOI: 10.1021/cr200061k] [Citation(s) in RCA: 2420] [Impact Index Per Article: 186.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Naomi J. Halas
- Department of Electrical and Computer Engineering, ‡Department of Chemistry, and §Department of Physics and Astronomy, Rice University, Houston, Texas 77005, United States
| | - Surbhi Lal
- Department of Electrical and Computer Engineering, ‡Department of Chemistry, and §Department of Physics and Astronomy, Rice University, Houston, Texas 77005, United States
| | - Wei-Shun Chang
- Department of Electrical and Computer Engineering, ‡Department of Chemistry, and §Department of Physics and Astronomy, Rice University, Houston, Texas 77005, United States
| | - Stephan Link
- Department of Electrical and Computer Engineering, ‡Department of Chemistry, and §Department of Physics and Astronomy, Rice University, Houston, Texas 77005, United States
| | - Peter Nordlander
- Department of Electrical and Computer Engineering, ‡Department of Chemistry, and §Department of Physics and Astronomy, Rice University, Houston, Texas 77005, United States
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Ohlinger A, Nedev S, Lutich AA, Feldmann J. Optothermal escape of plasmonically coupled silver nanoparticles from a three-dimensional optical trap. NANO LETTERS 2011; 11:1770-4. [PMID: 21410159 PMCID: PMC3839263 DOI: 10.1021/nl2003544] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We demonstrate that optical trapping of multiple silver nanoparticles is strongly influenced by plasmonic coupling of the nanoparticles. Employing dark-field Rayleigh scattering imaging and spectroscopy on multiple silver nanoparticles optically trapped in three dimensions, we experimentally investigate the time-evolution of the coupled plasmon resonance and its influence on the trapping stability. With time the coupling strengthens, which is observed as a gradual red shift of the coupled plasmon scattering. When the coupled plasmon becomes resonant with the trapping laser wavelength, the trap is destabilized and nanoparticles are released from the trap. Modeling of the trapping potential and its comparison to the plasmonic heating efficiency at various nanoparticle separation distances suggests a thermal mechanism of the trap destabilization. Our findings provide insight into the specificity of three-dimensional optical manipulation of plasmonic nanostructures suitable for field enhancement, for example for surface-enhanced Raman scattering.
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Affiliation(s)
- Alexander Ohlinger
- Photonics and Optoelectronics Group, Physics Department and CeNS, Ludwig-Maximilians-Universität München, Amalienstr. 54, 80799 Munich, Germany
| | - Spas Nedev
- Photonics and Optoelectronics Group, Physics Department and CeNS, Ludwig-Maximilians-Universität München, Amalienstr. 54, 80799 Munich, Germany
| | - Andrey A. Lutich
- Photonics and Optoelectronics Group, Physics Department and CeNS, Ludwig-Maximilians-Universität München, Amalienstr. 54, 80799 Munich, Germany
| | - Jochen Feldmann
- Photonics and Optoelectronics Group, Physics Department and CeNS, Ludwig-Maximilians-Universität München, Amalienstr. 54, 80799 Munich, Germany
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Oh MK, Baik HJ, Kim SK, Park S. Multiple surface plasmon resonances in silver and copper nanorods. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm13613e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Huang Z, Meng G, Huang Q, Yang Y, Zhu C, Tang C. Improved SERS performance from Au nanopillar arrays by abridging the pillar tip spacing by Ag sputtering. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:4136-4139. [PMID: 20803760 DOI: 10.1002/adma.201001179] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Ag-capped Au nanopillar arrays on a resin supporter (see left upper figure), with a typical adjacent pillar tip gap of 10 nm, show obviously higher surface-enhanced Raman scattering (SERS) sensitivity (right column in red) than that of the bare Au nanopillar array while using 10 nM R6G as probe molecules. The large-area Ag-capped Au nanopillar array has potential in trace detection of special chemicals.
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Affiliation(s)
- Zhulin Huang
- Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, PR China
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Song C, Wang Z, Zhang R, Yang J, Tan X, Cui Y. Highly sensitive immunoassay based on Raman reporter-labeled immuno-Au aggregates and SERS-active immune substrate. Biosens Bioelectron 2009; 25:826-31. [DOI: 10.1016/j.bios.2009.08.035] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2009] [Revised: 08/03/2009] [Accepted: 08/24/2009] [Indexed: 10/20/2022]
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Netzer NL, Gunawidjaja R, Hiemstra M, Zhang Q, Tsukruk VV, Jiang C. Formation and optical properties of compression-induced nanoscale buckles on silver nanowires. ACS NANO 2009; 3:1795-1802. [PMID: 19586043 DOI: 10.1021/nn900419r] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
An intriguing formation of nanoscale buckles is discovered when an array of aligned silver nanowires was deposited onto prestrained polydimethylsiloxane substrates. The spacing distance between the resulting silver nanoparticles corresponds to the buckling wavelength of the silver nanowires. The buckled nanowires exhibit unique optical properties, such as interruption of scattered polarized photons and emission of photons from subwavelength structure, as well as surface-enhanced Raman scattering at the vicinity of the formed nanobuckles. In this way, they have great potentials for nano-opto devices, catalysts for chemical reactions, and functional materials for chemical detections.
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Affiliation(s)
- Nathan L Netzer
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069
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Gu GH, Suh JS. Minimum Enhancement of Surface-Enhanced Raman Scattering for Single-Molecule Detections. J Phys Chem A 2009; 113:8529-32. [DOI: 10.1021/jp902714t] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Geun Hoi Gu
- Nano-materials Laboratory, Department of Chemistry, Seoul National University, Kwanak-ro 599, Kwanak-gu, Seoul 151-747, Republic of Korea
| | - Jung Sang Suh
- Nano-materials Laboratory, Department of Chemistry, Seoul National University, Kwanak-ro 599, Kwanak-gu, Seoul 151-747, Republic of Korea
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Zuloaga J, Prodan E, Nordlander P. Quantum description of the plasmon resonances of a nanoparticle dimer. NANO LETTERS 2009; 9:887-91. [PMID: 19159319 DOI: 10.1021/nl803811g] [Citation(s) in RCA: 373] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Using time-dependent density functional theory, we present a fully quantum mechanical investigation of the plasmon resonances in a nanoparticle dimer as a function of interparticle separation. We show that for dimer separations below 1 nm quantum mechanical effects, such as electron tunneling across the dimer junction and screening, significantly modify the optical response and drastically reduce the electromagnetic field enhancements relative to classical predictions. For larger separations, the dimer plasmons are well described by classical electromagnetic theory.
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Affiliation(s)
- Jorge Zuloaga
- Department of Physics and Astronomy, Rice University, Houston, Texas 77005-1892, USA
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