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Cui Y, Fan S, Zhai Y, Liu Y, Li J, Hu J, Wang L. "Turn-on" and pinhole-free ultrathin core-shell Au@SiO 2 nanoparticle-based metal-enhanced fluorescent (MEF) chemodosimeter for Hg 2. NANOSCALE ADVANCES 2024; 6:2319-2327. [PMID: 38694453 PMCID: PMC11059484 DOI: 10.1039/d3na00746d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 12/16/2023] [Indexed: 05/04/2024]
Abstract
This study reports a metal-enhanced fluorescence chemodosimeter for highly sensitive detection of Hg2+ ions. Silica-coated Au nanoparticles (Au@SiO2 NPs) with a pinhole-free 4-5 nm shell were synthesized and functionalized with a monolayer of turn-on fluorescent probes. Compared to other organic fluorescent probes suffering from poor biocompatibility and detection limits, this design of a monolayer of turn-on fluorescent probes immobilized on the Au@SiO2 NPs with a pinhole-free 4-5 nm shell avoids fluorescence quenching and allows the fluorescent probe within the field of the inner Au NPs to experience metal-enhanced fluorescence. With this design, the chemodosimeter permits fluorescence emission in the presence of Hg2+ ions, because they trigger the ring-opening reaction of the fluorescent probe immobilized on the Au@SiO2 NPs. Additionally, the fluorescent probe is distanced by the thin SiO2 shell from directly attaching to the metallic Au NPs, which not only avoids fluorescence quenching but allows the fluorescent probe within the long-ranged field of the inner Au NPs to experience metal-enhanced fluorescence. As a result, the detection limit for the chemodosimeter can reach up to 5.0 × 10-11 M, nearly two orders of magnitude higher than that achieved for the free fluorescent probe. We also demonstrate the acquisition of images of Hg2+ in HTC116 cells and zebrafish using a simple fluorescence confocal imaging technique. The fluorescence response results for HTC116 cells and zebrafish show that the probes can permeate into cells and organisms. Considering the availability of the many organic fluorescent probes that have been designed, the current designed metal-enhanced fluorescence chemodosimeter holds great potential for fluorescence detection of diverse species and fluorescence imaging.
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Affiliation(s)
- Ying Cui
- Hunan Key Laboratory of Two-Dimensional Materials, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, College of Chemistry and Materials Science, Hengyang Normal University Hengyang 421001 PR China
| | - Shanji Fan
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China Hengyang 421000 China
| | - Yunran Zhai
- Hunan Key Laboratory of Two-Dimensional Materials, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China
| | - Yingjie Liu
- Department of Breast and Thyroid Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China Hengyang 421000 China
| | - Junhua Li
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, College of Chemistry and Materials Science, Hengyang Normal University Hengyang 421001 PR China
| | - Jiawen Hu
- Hunan Key Laboratory of Two-Dimensional Materials, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China
| | - Lijia Wang
- Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, National Children's Regional Medical Center Hangzhou Zhejiang 310052 China
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2
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Hou Y, Chen R, Wang Z, Lu R, Wang Y, Ren S, Li S, Wang Y, Han T, Yang S, Zhou H, Gao Z. Bio-barcode assay: A useful technology for ultrasensitive and logic-controlled specific detection in food safety: A review. Anal Chim Acta 2023; 1267:341351. [PMID: 37257972 DOI: 10.1016/j.aca.2023.341351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 06/02/2023]
Abstract
Food safety is one of the greatest public health challenges. Developing ultrasensitive detection methods for analytes at ultra-trace levels is, therefore, essential. In recent years, the bio-barcode assay (BCA) has emerged as an effective ultrasensitive detection strategy that is based on the indirect amplification of various DNA probes. This review systematically summarizes the progress of fluorescence, PCR, and colorimetry-based BCA methods for the detection of various contaminants, including pathogenic bacteria, toxins, pesticides, antibiotics, and other chemical substances in food in over 120 research papers. Current challenges, including long experimental times and strict storage conditions, and the prospects for the application of BCA in biomedicine and environmental analyses, have also been discussed herein.
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Affiliation(s)
- Yue Hou
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234, People's Republic of China; Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Ruipeng Chen
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Zhiguang Wang
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234, People's Republic of China; Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Ran Lu
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Yonghui Wang
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Shuyue Ren
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Shuang Li
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Yu Wang
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Tie Han
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China
| | - Shiping Yang
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234, People's Republic of China.
| | - Huanying Zhou
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China.
| | - Zhixian Gao
- Institute of Environmental and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300050, People's Republic of China.
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3
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He Z, Li F, Zuo P, Tian H. Principles and Applications of Resonance Energy Transfer Involving Noble Metallic Nanoparticles. MATERIALS (BASEL, SWITZERLAND) 2023; 16:3083. [PMID: 37109920 PMCID: PMC10145016 DOI: 10.3390/ma16083083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/01/2023] [Accepted: 04/11/2023] [Indexed: 06/19/2023]
Abstract
Over the past several years, resonance energy transfer involving noble metallic nanoparticles has received considerable attention. The aim of this review is to cover advances in resonance energy transfer, widely exploited in biological structures and dynamics. Due to the presence of surface plasmons, strong surface plasmon resonance absorption and local electric field enhancement are generated near noble metallic nanoparticles, and the resulting energy transfer shows potential applications in microlasers, quantum information storage devices and micro-/nanoprocessing. In this review, we present the basic principle of the characteristics of noble metallic nanoparticles, as well as the representative progress in resonance energy transfer involving noble metallic nanoparticles, such as fluorescence resonance energy transfer, nanometal surface energy transfer, plasmon-induced resonance energy transfer, metal-enhanced fluorescence, surface-enhanced Raman scattering and cascade energy transfer. We end this review with an outlook on the development and applications of the transfer process. This will offer theoretical guidance for further optical methods in distance distribution analysis and microscopic detection.
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Affiliation(s)
- Zhicong He
- School of Mechanical and Electrical Engineering, Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430073, China
- School of Mechanical and Electrical Engineering, Hubei Polytechnic University, Huangshi 435003, China
- Hubei Key Laboratory of Intelligent Transportation Technology and Device, Hubei Polytechnic University, Huangshi 435003, China
| | - Fang Li
- School of Mechanical and Electrical Engineering, Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430073, China
| | - Pei Zuo
- School of Mechanical and Electrical Engineering, Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430073, China
| | - Hong Tian
- School of Mechanical and Electrical Engineering, Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430073, China
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4
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Hahm E, Jo A, Lee SH, Kang H, Pham XH, Jun BH. Silica Shell Thickness-Dependent Fluorescence Properties of SiO 2@Ag@SiO 2@QDs Nanocomposites. Int J Mol Sci 2022; 23:ijms231710041. [PMID: 36077434 PMCID: PMC9456444 DOI: 10.3390/ijms231710041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 08/27/2022] [Accepted: 08/31/2022] [Indexed: 11/16/2022] Open
Abstract
Silica shell coatings, which constitute important technology for nanoparticle (NP) developments, are utilized in many applications. The silica shell's thickness greatly affects distance-dependent optical properties, such as metal-enhanced fluorescence (MEF) and fluorescence quenching in plasmonic nanocomposites. However, the precise control of silica-shell thicknesses has been mainly conducted on single metal NPs, and rarely on complex nanocomposites. In this study, silica shell-coated Ag nanoparticle-assembled silica nanoparticles (SiO2@Ag@SiO2), with finely controlled silica shell thicknesses (4 nm to 38 nm), were prepared, and quantum dots (QDs) were introduced onto SiO2@Ag@SiO2. The dominant effect between plasmonic quenching and MEF was defined depending on the thickness of the silica shell between Ag and QDs. When the distance between Ag NPs to QDs was less than ~10 nm, SiO2@Ag@SiO2@QDs showed weaker fluorescence intensities than SiO2@QD (without metal) due to the quenching effect. On the other hand, when the distance between Ag NPs to QDs was from 10 nm to 14 nm, the fluorescence intensity of SiO2@Ag@SiO2@QD was stronger than SiO2@QDs due to MEF. The results provide background knowledge for controlling the thickness of silica shells in metal-containing nanocomposites and facilitate the development of potential applications utilizing the optimal plasmonic phenomenon.
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Affiliation(s)
- Eunil Hahm
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea
| | - Ahla Jo
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea
| | - Sang Hun Lee
- Department of Chemical and Biological Engineering, Hanbat National University, Deajeon 34158, Korea
| | - Homan Kang
- Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Xuan-Hung Pham
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea
- Correspondence: ; Tel.: +82-2-450-0521
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5
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Hopper E, Boukouvala C, Asselin J, Biggins JS, Ringe E. Opportunities and Challenges for Alternative Nanoplasmonic Metals: Magnesium and Beyond. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2022; 126:10630-10643. [PMID: 35836479 PMCID: PMC9272400 DOI: 10.1021/acs.jpcc.2c01944] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Materials that sustain localized surface plasmon resonances have a broad technology potential as attractive platforms for surface-enhanced spectroscopies, chemical and biological sensing, light-driven catalysis, hyperthermal cancer therapy, waveguides, and so on. Most plasmonic nanoparticles studied to date are composed of either Ag or Au, for which a vast array of synthetic approaches are available, leading to controllable size and shape. However, recently, alternative materials capable of generating plasmonically enhanced light-matter interactions have gained prominence, notably Cu, Al, In, and Mg. In this Perspective, we give an overview of the attributes of plasmonic nanostructures that lead to their potential use and how their performance is dictated by the choice of plasmonic material, emphasizing the similarities and differences between traditional and emerging plasmonic compositions. First, we discuss the materials limitation encapsulated by the dielectric function. Then, we evaluate how size and shape maneuver localized surface plasmon resonance (LSPR) energy and field distribution and address how this impacts applications. Next, biocompatibility, reactivity, and cost, all key differences underlying the potential of non-noble metals, are highlighted. We find that metals beyond Ag and Au are of competitive plasmonic quality. We argue that by thinking outside of the box, i.e., by looking at nonconventional materials such as Mg, one can broaden the frequency range and, more importantly, combine the plasmonic response with other properties essential for the implementation of plasmonic technologies.
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Affiliation(s)
- Elizabeth
R. Hopper
- Department
of Materials Science and Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
- Department
of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, United
Kingdom
- Department
of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
| | - Christina Boukouvala
- Department
of Materials Science and Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
- Department
of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, United
Kingdom
| | - Jérémie Asselin
- Department
of Materials Science and Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
- Department
of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, United
Kingdom
| | - John S. Biggins
- Department
of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, United Kingdom
| | - Emilie Ringe
- Department
of Materials Science and Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
- Department
of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, United
Kingdom
- . Phone: +44 (0)1223 334330
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6
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Picard-Lafond A, Larivière D, Boudreau D. Metal-Enhanced Hg 2+-Responsive Fluorescent Nanoprobes: From Morphological Design to Application to Natural Waters. ACS OMEGA 2022; 7:22944-22955. [PMID: 35811854 PMCID: PMC9260771 DOI: 10.1021/acsomega.2c02985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 06/08/2022] [Indexed: 06/15/2023]
Abstract
Metal-enhanced fluorescence (MEF) is a powerful tool in the design of sensitive chemical sensors by improving brightness and photostability of target-responsive fluorophores. Compounding these advantages with the modest hardware requirements of fluorescence sensing compared to that of centralized elemental analysis instruments, thus expanding the use of MEF to the detection of low-level inorganic pollutants, is a compelling aspiration. Among the latter, monitoring mercury in the environment, where some of its species disseminate through the food chain and, in time, to humans, has elicited a broad research effort toward the development of Hg2+-responsive fluorescent sensors. Herein, a Hg2+-sensitive MEF-enabled probe was conceived by grafting a Hg2+-responsive fluorescein derivative to concentric Ag@SiO2 NPs, where the metallic core enhances fluorescence emission of molecular probes embedded in a surrounding silica shell. Time-resolved fluorescence measurements showed that the fluorophore's excited-state lifetime decreases from 3.9 ns in a solid, coreless silica sphere to 0.4 ns in the core-shell nanoprobe, granting the dye a better resistance to photobleaching. The Ag-core system showed a sizable improvement in the limit of detection at 2 nM (0.4 ppb) compared to 50 nM (10 ppb) in silica-only colloids, and its effectiveness for natural water analysis was demonstrated. Overall, the reported nanoarchitecture hints at the potential of MEF for heavy metal detection by fluorescence detection.
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Affiliation(s)
- Audrey Picard-Lafond
- Département
de chimie and Centre d’optique, photonique et laser
(COPL), Université Laval, Québec, QC G1V 0A6, Canada
| | - Dominic Larivière
- Département
de chimie and Centre d’optique, photonique et laser
(COPL), Université Laval, Québec, QC G1V 0A6, Canada
| | - Denis Boudreau
- Département
de chimie and Centre d’optique, photonique et laser
(COPL), Université Laval, Québec, QC G1V 0A6, Canada
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7
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Thomas EM, Cortes CL, Paul L, Gray S, Thomas KG. Combined Effects of Emitter-Emitter and Emitter-Plasmonic Surface Separations Dictate Photoluminescence Enhancement in Plasmonic Field. Phys Chem Chem Phys 2022; 24:17250-17262. [DOI: 10.1039/d2cp01681h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The brightness of an emitter can be enhanced by metal-enhanced fluorescence, wherein the excitonic dipole couples with the electromagnetic field of the surface plasmon. Herein, we experimentally map the landscape...
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8
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Shen J, Rees TW, Ji L, Chao H. Recent advances in ruthenium(II) and iridium(III) complexes containing nanosystems for cancer treatment and bioimaging. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214016] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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9
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Rastogi R, Dogbe Foli EA, Vincent R, Adam PM, Krishnamoorthy S. Engineering Electromagnetic Hot-Spots in Nanoparticle Cluster Arrays on Reflective Substrates for Highly Sensitive Detection of (Bio)molecular Analytes. ACS APPLIED MATERIALS & INTERFACES 2021; 13:32653-32661. [PMID: 34242017 DOI: 10.1021/acsami.1c01953] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Intense electromagnetic (EM) hot-spots arising at the junctions or gaps in plasmonic nanoparticle assemblies can drive ultrahigh sensitivity in molecular detection by surface-enhanced spectroscopies. Harnessing this potential however requires access to the confined physical space at the EM hot-spots, which is a challenge for larger analytes such as biomolecules. Here, we demonstrate self-assembly derived gold nanoparticle cluster arrays (NCAs) on gold substrates exhibiting controlled interparticle (<1 nm wide) and intercluster (<10 nm wide) hot-spots as highly promising in this direction. Sensitivity of the NCAs toward detection of small (<1 nm) or large (protein-receptor interactions) analytes in surface-enhanced Raman and metal-enhanced fluorescence assays is found to be strongly impacted by the size of the cluster and the presence of reflective substrates. Experiments supported by numerical simulations attribute the higher sensitivity to higher EM field enhancements at the hot-spots, as well as greater analyte leverage over EM hot-spots. The best-performing arrays could push the sensitivity down to picomolar detection limits for sub-nanometric organic analytes as well as large protein analytes. The investigation paves the way for rational design of plasmonic biosensors and highlights the unique capabilities of a molecular self-assembly approach toward catering to this objective.
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Affiliation(s)
- Rishabh Rastogi
- MRT Department, Luxembourg Institute of Technology, 41, Rue du Brill, Belvaux L-4422, Luxembourg
- Laboratory Light, Nanomaterials and Nanotechnologies-L2n, University of Technology of Troyes and CNRS ERL 7004, 12 rue Marie Curie, Troyes 10000, France
| | - Ekoue A Dogbe Foli
- Laboratory Light, Nanomaterials and Nanotechnologies-L2n, University of Technology of Troyes and CNRS ERL 7004, 12 rue Marie Curie, Troyes 10000, France
| | - Remi Vincent
- Laboratory Light, Nanomaterials and Nanotechnologies-L2n, University of Technology of Troyes and CNRS ERL 7004, 12 rue Marie Curie, Troyes 10000, France
| | - Pierre-Michel Adam
- Laboratory Light, Nanomaterials and Nanotechnologies-L2n, University of Technology of Troyes and CNRS ERL 7004, 12 rue Marie Curie, Troyes 10000, France
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10
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Ćwik M, Sulowska K, Buczyńska D, Roźniecka E, Domagalska M, Maćkowski S, Niedziółka-Jönsson J. Controlling plasmon propagation and enhancement via reducing agent in wet chemistry synthesized silver nanowires. OPTICS EXPRESS 2021; 29:8834-8845. [PMID: 33820325 DOI: 10.1364/oe.412903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
Silver nanowires with varying diameters and submillimeter lengths were obtained by changing a reducing agent used during hydrothermal synthesis. The control over the nanowire diameter turns out to play a critical role in determining their plasmonic properties, including fluorescence enhancement and surface plasmon polariton propagation. Advanced fluorescence imaging of hybrid nanostructures assembled of silver nanowires and photoactive proteins indicates longer propagation lengths for nanowires featuring larger diameters. At the same time, with increasing diameter of the nanowires, we measure a substantial reduction of fluorescence enhancement. The results point at possible ways to control the influence of plasmon excitations in silver nanowires by tuning their morphology.
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11
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Hwang JH, Park S, Son J, Park JW, Nam JM. DNA-Engineerable Ultraflat-Faceted Core-Shell Nanocuboids with Strong, Quantitative Plasmon-Enhanced Fluorescence Signals for Sensitive, Reliable MicroRNA Detection. NANO LETTERS 2021; 21:2132-2140. [PMID: 33596085 DOI: 10.1021/acs.nanolett.0c04883] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
There has been enormous interest in understanding and utilizing plasmon-enhanced fluorescence (PEF) with metal nanostructures, but maximizing the enhancement in a reproducible, quantitative manner while reliably controlling the distance between dyes and metal particle surface for practical applications is highly challenging. Here, we designed and synthesized fluorescence-amplified nanocuboids (FANCs) with highly enhanced and controlled PEF signals, and fluorescent silica shell-coated FANCs (FS-FANCs) were then formed to fixate the dye position and increase particle stability and fluorescence signal intensity for biosensing applications. By uniformly modifying fluorescently labeled DNA on Au nanorods and forming ultraflat Ag shells on them, we were able to reliably control the distance between fluorophores and Ag surface and obtained an ∼186 fluorescence enhancement factor with these FANCs. Importantly, FS-FANCs were utilized as fluorescent nanoparticle tags for microarray-based miRNA detection, and we achieved >103-fold higher sensitivity than commercially available chemical fluorophores with 100 aM to 1 pM dynamic range.
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Affiliation(s)
- Jae-Ho Hwang
- Department of Chemistry, Seoul National University, Seoul 151-747, South Korea
| | - Soohyun Park
- Department of Chemistry, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-Gu, Pohang 37673, South Korea
| | - Jiwoong Son
- Department of Chemistry, Seoul National University, Seoul 151-747, South Korea
| | - Joon Won Park
- Department of Chemistry, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-Gu, Pohang 37673, South Korea
| | - Jwa-Min Nam
- Department of Chemistry, Seoul National University, Seoul 151-747, South Korea
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12
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Harpaz D, Alkan N, Eltzov E. The Incorporation of Amplified Metal-Enhanced Fluorescence in a CMOS-Based Biosensor Increased the Detection Sensitivity of a DNA Marker of the Pathogenic Fungus Colletotrichum gloeosporioides. BIOSENSORS-BASEL 2020; 10:bios10120204. [PMID: 33322238 PMCID: PMC7764091 DOI: 10.3390/bios10120204] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/08/2020] [Accepted: 12/10/2020] [Indexed: 12/12/2022]
Abstract
Half of the global agricultural fresh produce is lost, mainly because of rots that are caused by various pathogenic fungi. In this study, a complementary metal-oxide-semiconductor (CMOS)-based biosensor was developed, which integrates specific DNA strands that allow the detection of enoyl-CoA-hydratase/isomerase, which is a quiescent marker of Colletotrichum gloeosporioides fungi. The developed biosensor mechanism is based on the metal-enhanced fluorescence (MEF) phenomenon, which is amplified by depositing silver onto a glass surface. A surface DNA strand is then immobilized on the surface, and in the presence of the target mRNA within the sample, the reporter DNA strand that is linked to horseradish peroxidase (HRP) enzyme will also bind to it. The light signal that is later produced from the HRP enzyme and its substrate is enhanced and detected by the coupled CMOS sensor. Several parameters that affect the silver-deposition procedure were examined, including silver solution temperature and volume, heating mode, and the tank material. Moreover, the effect of blocking treatment (skim milk or bovine serum albumin (BSA)) on the silver-layer stability and nonspecific DNA absorption was tested. Most importantly, the effect of the deposition reaction duration on the silver-layer formation and the MEF amplification was also investigated. In the study findings a preferred silver-deposition reaction duration was identified as 5–8 min, which increased the deposition of silver on the glass surface up to 13-times, and also resulted in the amplification of the MEF phenomenon with a maximum light signal of 50 relative light units (RLU). It was found that MEF can be amplified by a customized silver-deposition procedure that results in increased detection sensitivity. The implementation of the improved conditions increased the biosensor sensitivity to 3.3 nM (4500 RLU) with a higher detected light signal as compared to the initial protocol (400 RLU). Moreover, the light signal was amplified 18.75-, 11.11-, 5.5-, 11.25-, and 3.75-times in the improved protocol for all the tested concentrations of the target DNA strand of 1000, 100, 10, 3.3, and 2 nM, respectively. The developed biosensor system may allow the detection of the pathogenic fungus in postharvest produce and determine its pathogenicity state.
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Affiliation(s)
- Dorin Harpaz
- Institute of Plant Sciences and Genetics in Agriculture, Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel;
- Institute of Postharvest and Food Science, Department of Postharvest Science, Volcani Center, Agricultural Research Organization, Rishon LeZion 7505101, Israel;
| | - Noam Alkan
- Institute of Postharvest and Food Science, Department of Postharvest Science, Volcani Center, Agricultural Research Organization, Rishon LeZion 7505101, Israel;
| | - Evgeni Eltzov
- Institute of Postharvest and Food Science, Department of Postharvest Science, Volcani Center, Agricultural Research Organization, Rishon LeZion 7505101, Israel;
- Correspondence:
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13
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Tavakkoli Yaraki M, Hu F, Daqiqeh Rezaei S, Liu B, Tan YN. Metal-enhancement study of dual functional photosensitizers with aggregation-induced emission and singlet oxygen generation. NANOSCALE ADVANCES 2020; 2:2859-2869. [PMID: 36132415 PMCID: PMC9419615 DOI: 10.1039/d0na00182a] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 06/09/2020] [Indexed: 05/10/2023]
Abstract
Photosensitizers with aggregation-induced emission (AIE-PS) are attractive for image-guided photodynamic therapy due to their dual functional role in generating singlet oxygen and producing high fluorescent signal in the aggregated state. However, their brightness and treatment efficiency maybe limited in current practice. Herein we report the first systematic investigation on the metal-enhanced fluorescence (MEF) and singlet oxygen generation (ME-SOG) ability of our newly synthesized AIE-photosensitizers. The Ag@AIE-PS of varied sizes were prepared via layer-by-layer assembly with controlled distance between silver nanoparticles (AgNPs) and AIE-PS. A maximum of 6-fold enhancement in fluorescence and 2-fold increment in SOG were observed for the 85nmAg@AIE-PS. Comprehensive characterization and simulation were conducted to unravel the plasmon-enhancement mechanisms of Ag@AIE-PS. Results show that MEF of AIE-PS is determined by the enhanced electric field around AgNPs, while ME-SOG is dictated by the scattering efficiency of the metal core, where bigger AgNPs would result in larger enhancement factor. Furthermore, the optimum distance between AgNPs and AIE-PS to achieve maximum SOG enhancement is shorter than that required for the highest MEF. The correlation of MEF and ME-SOG found in this study is useful for designing new a generation of AIE-photosensitizers with high brightness and treatment efficiency towards practical theranostic application in the future.
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Affiliation(s)
- Mohammad Tavakkoli Yaraki
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (ASTAR) 138634 Singapore
- Department Chemical and Biomolecular Engineering, National University of Singapore 4 Engineering Drive 4 Singapore 117585 Singapore
| | - Fang Hu
- Department Chemical and Biomolecular Engineering, National University of Singapore 4 Engineering Drive 4 Singapore 117585 Singapore
| | - Soroosh Daqiqeh Rezaei
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (ASTAR) 138634 Singapore
- Department of Mechanical Engineering, National University of Singapore 9 Engineering Drive 1 117575 Singapore
| | - Bin Liu
- Department Chemical and Biomolecular Engineering, National University of Singapore 4 Engineering Drive 4 Singapore 117585 Singapore
| | - Yen Nee Tan
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (ASTAR) 138634 Singapore
- Faculty of Science, Agriculture & Engineering, Newcastle University Newcastle Upon Tyne NE1 7RU UK
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14
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Kumar S, Park H, Cho H, Siddique RH, Narasimhan V, Yang D, Choo H. Overcoming evanescent field decay using 3D-tapered nanocavities for on-chip targeted molecular analysis. Nat Commun 2020; 11:2930. [PMID: 32523000 PMCID: PMC7287113 DOI: 10.1038/s41467-020-16813-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 05/27/2020] [Indexed: 11/17/2022] Open
Abstract
Enhancement of optical emission on plasmonic nanostructures is intrinsically limited by the distance between the emitter and nanostructure surface, owing to a tightly-confined and exponentially-decaying electromagnetic field. This fundamental limitation prevents efficient application of plasmonic fluorescence enhancement for diversely-sized molecular assemblies. We demonstrate a three-dimensionally-tapered gap plasmon nanocavity that overcomes this fundamental limitation through near-homogeneous yet powerful volumetric confinement of electromagnetic field inside an open-access nanotip. The 3D-tapered device provides fluorescence enhancement factors close to 2200 uniformly for various molecular assemblies ranging from few angstroms to 20 nanometers in size. Furthermore, our nanostructure allows detection of low concentration (10 pM) biomarkers as well as specific capture of single antibody molecules at the nanocavity tip for high resolution molecular binding analysis. Overcoming molecule position-derived large variations in plasmonic enhancement can propel widespread application of this technique for sensitive detection and analysis of complex molecular assemblies at or near single molecule resolution.
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Affiliation(s)
- Shailabh Kumar
- Department of Medical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 136-93, Pasadena, CA, 91125, USA
| | - Haeri Park
- Department of Medical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 136-93, Pasadena, CA, 91125, USA
- Image Sensor Lab, Samsung Semiconductor, Inc., 2 N. Lake Ave. Ste. 240, Pasadena, CA, 91101, USA
| | - Hyunjun Cho
- Department of Electrical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 136-93, Pasadena, CA, 91125, USA
| | - Radwanul H Siddique
- Department of Medical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 136-93, Pasadena, CA, 91125, USA
- Image Sensor Lab, Samsung Semiconductor, Inc., 2 N. Lake Ave. Ste. 240, Pasadena, CA, 91101, USA
| | - Vinayak Narasimhan
- Department of Medical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 136-93, Pasadena, CA, 91125, USA
| | - Daejong Yang
- Department of Medical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 136-93, Pasadena, CA, 91125, USA
| | - Hyuck Choo
- Department of Medical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 136-93, Pasadena, CA, 91125, USA.
- Image Sensor Lab, Samsung Semiconductor, Inc., 2 N. Lake Ave. Ste. 240, Pasadena, CA, 91101, USA.
- Department of Electrical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 136-93, Pasadena, CA, 91125, USA.
- Imaging Device Lab, Device & System Research Center, Samsung Advanced Institute of Technology (SAIT), Suwon, 16678, Republic of Korea.
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15
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Magnetron-sputtered Polytetrafluoroethylene-stabilized Silver Nanoisland Surface for Surface-Enhanced Fluorescence. NANOMATERIALS 2020; 10:nano10040773. [PMID: 32316367 PMCID: PMC7221687 DOI: 10.3390/nano10040773] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 04/10/2020] [Accepted: 04/13/2020] [Indexed: 01/22/2023]
Abstract
Surface-enhanced fluorescence (SEF) requires the absorption/emission band of the fluorophore, the localized surface plasmon resonance (LSPR) of the nanostructure and the excitation wavelength to fall in the same (or very close) spectral range. In this paper, we monitor the SEF intensity and lifetime dependence of riboflavin (vitamin B2) adsorbed on a spacer-modified Ag substrate with respect to the thickness of the spacer. The substrates were formed by silver nanoislands deposited onto magnetron-sputtered polytetrafluoroethylene (ms-PTFE). The spacer was formed by the ms-PTFE layer with the thickness ranging from ~5 to 25 nm. The riboflavin dissolved in dimethylsulfoxide (DMSO) at a 10 µM concentration forms, at the ms-PTFE surface, a homogeneous layer of adsorbed molecules corresponding to a monomolecular layer. The microspectroscopic measurements of the adsorbed layer were performed through a sessile droplet; our study has shown the advantages and limitations of this approach. Time-resolved fluorescence enabled us to determine the enhanced fluorescence quantum yield due to the shortening of the radiative decay in the vicinity of the plasmonic surface. For the 5 nm ms-PTFE layer possessing the largest (estimated 4×) fluorescence enhancement, the quantum yield was increased 2.3×.
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16
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Knoblauch R, Ben Hamo H, Marks R, Geddes CD. Spectral distortions in zinc-based metal-enhanced fluorescence underpinned by fast and slow electronic transitions. Chem Phys Lett 2020; 744. [DOI: 10.1016/j.cplett.2020.137212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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17
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Zhang W, Lei H. Fluorescence enhancement based on cooperative effects of a photonic nanojet and plasmon resonance. NANOSCALE 2020; 12:6596-6602. [PMID: 32073109 DOI: 10.1039/d0nr00675k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Developing a universal and simple structure with an excellent fluorescence enhancement is a highly desirable goal for practical applications in optical detection and imaging. Herein, a hybrid structure composed of melamine-formaldehyde (MF) microspheres covering an Au nanorod (AuNR) film (MS/AuNR for short) is reported to enhance fluorescence, which is based on the cooperative effects of a photonic nanojet and plasmon resonance. Moreover, to obtain an excellent plasmonic property, an additional poly(methyl methacrylate) (PMMA) spacing layer with an optimal thickness of 8 nm is added to prevent the fluorescence from directly coming in contact with the AuNR film. Using the proposed hybrid structure and taking the quantum dots (QDs) as fluorescent materials, a maximum enhancement of fluorescence of up to 260 fold is measured. Besides, the hybrid structure is also applied in fluorescence imaging. Utilizing the fluorescence enhancement and pattern magnification effects of the hybrid structure, clear imaging of the 100 nm fluorescent particles is achieved. The above results have important academic value and application prospects in many fields such as weak fluorescence detection and nano-fluorescence imaging.
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Affiliation(s)
- Weina Zhang
- School of Materials Science and Engineering, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275, China.
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18
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Nano-Structured Optical Fibers Made of Glass-Ceramics, and Phase Separated and Metallic Particle-Containing Glasses. FIBERS 2019. [DOI: 10.3390/fib7120105] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
For years, scientists have been looking for different techniques to make glasses perfect: fully amorphous and ideally homogeneous. Meanwhile, recent advances in the development of particle-containing glasses (PCG), defined in this paper as glass-ceramics, glasses doped with metallic nanoparticles, and phase-separated glasses show that these “imperfect” glasses can result in better optical materials if particles of desired chemistry, size, and shape are present in the glass. It has been shown that PCGs can be used for the fabrication of nanostructured fibers—a novel class of media for fiber optics. These unique optical fibers are able to outperform their traditional glass counterparts in terms of available emission spectral range, quantum efficiency, non-linear properties, fabricated sensors sensitivity, and other parameters. Being rather special, nanostructured fibers require new, unconventional solutions on the materials used, fabrication, and characterization techniques, limiting the use of these novel materials. This work overviews practical aspects and progress in the fabrication and characterization methods of the particle-containing glasses with particular attention to nanostructured fibers made of these materials. A review of the recent achievements shows that current technologies allow producing high-optical quality PCG-fibers of different types, and the unique optical properties of these nanostructured fibers make them prospective for applications in lasers, optical communications, medicine, lighting, and other areas of science and industry.
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19
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Lee SH, Jun BH. Silver Nanoparticles: Synthesis and Application for Nanomedicine. Int J Mol Sci 2019; 20:ijms20040865. [PMID: 30781560 PMCID: PMC6412188 DOI: 10.3390/ijms20040865] [Citation(s) in RCA: 528] [Impact Index Per Article: 105.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 02/10/2019] [Accepted: 02/15/2019] [Indexed: 02/07/2023] Open
Abstract
Over the past few decades, metal nanoparticles less than 100 nm in diameter have made a substantial impact across diverse biomedical applications, such as diagnostic and medical devices, for personalized healthcare practice. In particular, silver nanoparticles (AgNPs) have great potential in a broad range of applications as antimicrobial agents, biomedical device coatings, drug-delivery carriers, imaging probes, and diagnostic and optoelectronic platforms, since they have discrete physical and optical properties and biochemical functionality tailored by diverse size- and shape-controlled AgNPs. In this review, we aimed to present major routes of synthesis of AgNPs, including physical, chemical, and biological synthesis processes, along with discrete physiochemical characteristics of AgNPs. We also discuss the underlying intricate molecular mechanisms behind their plasmonic properties on mono/bimetallic structures, potential cellular/microbial cytotoxicity, and optoelectronic property. Lastly, we conclude this review with a summary of current applications of AgNPs in nanoscience and nanomedicine and discuss their future perspectives in these areas.
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Affiliation(s)
- Sang Hun Lee
- Department of Bioengineering, University of California Berkeley, Berkeley, CA 94720, USA.
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, 1 Hwayang-dong, Gwanjin-gu, Seoul 143-701, Korea.
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20
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Lee D, Lee J, Song J, Jen M, Pang Y. Homogeneous silver colloidal substrates optimal for metal-enhanced fluorescence. Phys Chem Chem Phys 2019; 21:11599-11607. [PMID: 30901014 DOI: 10.1039/c9cp00585d] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Homogeneous silver colloidal films (SCFs), composed of silver nanoparticles 67-193 nm in diameter, were synthesized by a seeded-growth method as the substrates for metal-enhanced fluorescence (MEF). The homogeneity and uniform particle distribution of the SCFs showed many advantages for the exploration of the MEF mechanism. The fluorescence enhancement of 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (DCM) and rhodamine 700 (Rh700) dyes dispersed in a thin layer of polystyrene (PS) with the SCFs was observed by time-resolved fluorescence spectroscopy. The fluorescence enhancements of DCM and Rh700 become larger when the surface plasmon resonance bands of SCFs overlap the emission bands of dyes. The particle-size-dependent changes of the radiative and non-radiative rate constants of both dyes with the SCFs are estimated by an improved analysis combining the fluorescence intensity and lifetime measurements and the finite-difference time-domain method simulations.
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Affiliation(s)
- Daedu Lee
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea.
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21
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Abstract
Fluorescence spectroscopy with strong emitters is a remarkable tool with ultra-high sensitivity for detection and imaging down to the single-molecule level. Plasmon-enhanced fluorescence (PEF) not only offers enhanced emissions and decreased lifetimes, but also allows an expansion of the field of fluorescence by incorporating weak quantum emitters, avoiding photobleaching and providing the opportunity of imaging with resolutions significantly better than the diffraction limit. It also opens the window to a new class of photostable probes by combining metal nanostructures and quantum emitters. In particular, the shell-isolated nanostructure-enhanced fluorescence, an innovative new mode for plasmon-enhanced surface analysis, is included. These new developments are based on the coupling of the fluorophores in their excited states with localized surface plasmons in nanoparticles, where local field enhancement leads to improved brightness of molecular emission and higher detection sensitivity. Here, we review the recent progress in PEF with an emphasis on the mechanism of plasmon enhancement, substrate preparation, and some advanced applications, including an outlook on PEF with high time- and spatially resolved properties.
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Affiliation(s)
- Jian-Feng Li
- MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, College of Chemistry and Chemical Engineering, Department of Physics, Research Institute for Biomimetics and Soft Matter, Xiamen University, Xiamen 361005, China.
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22
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Kong L, Kong K, Zhao Y, Chu H. Tuning the luminescence properties of lanthanide coordination polymers with Ag@SiO 2 nanoparticles. Dalton Trans 2018; 46:6447-6455. [PMID: 28470259 DOI: 10.1039/c7dt00581d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A series of core-shell Ag@SiO2 nanoparticles with different core diameters and shell thicknesses have been prepared by a modified-Stöber method. They provide a facile route to tune the luminescence intensities, lifetimes and quantum efficiencies of lanthanide coordination polymers in the solid powder state. The coordination polymers [Tb2(p-PTA)3(H2O)2]n, [Tb2(o-PTA)3(H2O)2]n, [Eu2(p-PTA)3(H2O)2]n and [Eu2(o-PTA)3(H2O)2]n (PTA = phthalic acid) are synthesized and subsequently bound to the surface of Ag@SiO2 nanoparticles. The luminescence intensities of the lanthanide complexes are enhanced as high as 10.8 times. The enhancement times depend on the core diameter and shell thickness of the Ag@SiO2 nanoparticles. Importantly, by simply controlling the ratios between the complexes and the nanoparticles, the luminescence intensities, lifetimes and quantum efficiencies of the lanthanide complexes can be tuned in wide ranges. Typically, the luminescence lifetime of [Eu2(p-PTA)3(H2O)2]n powder increases from 451 μs to 783 μs when 300 μL Ag@SiO2 solution is added. Meanwhile, the luminescence quantum efficiency of the complex increases from 32.1% to 40.9%. The change of the luminescence properties of the lanthanide coordination polymers can be ascribed to the surface plasmon resonance effect of the Ag@SiO2 nanoparticles as well as the decrease of the nonradiative decay rates of the complexes.
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Affiliation(s)
- Lingjuan Kong
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China.
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23
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Qin H, Ma D, Du J. Distance dependent fluorescence quenching and enhancement of gold nanoclusters by gold nanoparticles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 189:161-166. [PMID: 28810178 DOI: 10.1016/j.saa.2017.08.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Revised: 08/06/2017] [Accepted: 08/09/2017] [Indexed: 06/07/2023]
Abstract
The interaction between fluorescent gold nanoclusters (AuNCs) and gold nanoparticles (AuNPs) has been investigated. It was observed that the fluorescence of AuNCs was remarkably quenched when direct contact with AuNPs. The fluorescence quenching of AuNCs by AuNPs was dynamic quenching and exhibited size-dependent property. A larger size of AuNPs displayed a stronger quenching effect and gave a larger quenching constant. When a silica spacer shell was introduced between AuNPs and AuNCs, a fluorescence enhancement of AuNCs by Au@SiO2 NPs was observed. The fluorescence enhancement was strongly dependent on the separation distance between the AuNPs and the AuNCs. A maximal enhancement of 3.72 times was observed when Au@SiO2 NPs have a silica shell thickness of 12nm. This nanocomposite consisting of relatively nontoxic AuNPs and AuNCs may have a potential application in developing novel fluorescent sensor.
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Affiliation(s)
- Haiyan Qin
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, People's Republic of China
| | - Diao Ma
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, People's Republic of China
| | - Jianxiu Du
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, People's Republic of China.
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24
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Park HC, Gong S, Cho YH. How Effective is Plasmonic Enhancement of Colloidal Quantum Dots for Color-Conversion Light-Emitting Devices? SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1701805. [PMID: 29120086 DOI: 10.1002/smll.201701805] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 08/02/2017] [Indexed: 05/24/2023]
Abstract
Enhancing the fluorescence intensity of colloidal quantum dots (QDs) in case of color-conversion type QD light-emitting devices (LEDs) is very significant due to the large loss of QDs and their quantum yields during fabrication processes, such as patterning and spin-coating, and can therefore improve cost-effectiveness. Understanding the enhancement process is crucial for the design of metallic nanostructure substrates for enhancing the fluorescence of colloidal QDs. In this work, improved color conversion of colloidal green and red QDs coupled with aluminum (Al) and silver (Ag) nanodisk (ND) arrays designed by in-depth systematic finite-difference time domain simulations of excitation, spontaneous emission, and quantum efficiency enhancement is reported. Calculated results of the overall photoluminescence enhancement factor in the substrate of 500 × 500 µm2 size are 2.37-fold and 2.82-fold for Al ND-green QD and Ag ND-red QD structures, respectively. Experimental results are in good agreement, showing 2.26-fold and 2.66-fold enhancements for Al ND and Ag ND structures. Possible uses of plasmonics in cases such as white LED and total color conversion for possible display applications are discussed. The theoretical treatments and experiments shown in this work are a proof of principle for future studies of plasmonic enhancement of various light-emitting materials.
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Affiliation(s)
- Hyun Chul Park
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Suhyun Gong
- Department of Physics, Korea Advanced Institute of Science and Technology, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Yong-Hoon Cho
- Department of Physics, Korea Advanced Institute of Science and Technology, Yuseong-gu, Daejeon, 34141, Republic of Korea
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25
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Yan Y, Meng L, Zhang W, Zheng Y, Wang S, Ren B, Yang Z, Yan X. High-Throughput Single-Particle Analysis of Metal-Enhanced Fluorescence in Free Solution Using Ag@SiO 2 Core-Shell Nanoparticles. ACS Sens 2017; 2:1369-1376. [PMID: 28836759 DOI: 10.1021/acssensors.7b00522] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Metal-enhanced fluorescence (MEF) based on localized surface plasmon resonance (LSPR) is an effective strategy to increase the detection sensitivity in biotechnology and biomedicine. Because plasmonic nanoparticles are intrinsically heterogeneous, high-throughput single-particle analysis of MEF in free solution are highly demanded for the mechanistic understanding and control of this nanoscale process. Here, we report the application of a laboratory-built high-sensitivity flow cytometer (HSFCM) to investigate the fluorescence-enhancing effect of individual plasmonic nanoparticles on nearby fluorophore molecules. Ag@SiO2 core-shell nanoparticles were used as the model system which comprised a silver core, a silica shell, and an FITC-doped thin layer of silica shell. FITC-doped silica nanoparticles of the same particle size but without silver core were used as the counterparts. Both the side scattering and fluorescence signals of single nanoparticles in suspension were measured simultaneously by the HSFCM at a speed of thousands of particles per minute. The roles of silver core size (40-100 nm) and fluorophore-metal distance (5-30 nm) were systematically examined. Fluorescence enhancement factor exceeding 30 was observed at silver core size of 70 nm and silica shell thickness of 5 nm. Compared with ensemble-averaged spectrofluorometric measurements, our experimental observation at the single-particle level was well supported by the finite difference time domain (FDTD) calculation. It allows us to achieve a fundamental understanding of MEF, which is important to the design and control of plasmonic nanostructures for efficient fluorescence enhancement.
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Affiliation(s)
- Ya Yan
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Key Laboratory for Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemical Biology, College of Chemistry and Chemical Engineering, and ‡Department of Physics, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Lingyan Meng
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Key Laboratory for Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemical Biology, College of Chemistry and Chemical Engineering, and ‡Department of Physics, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Wenqiang Zhang
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Key Laboratory for Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemical Biology, College of Chemistry and Chemical Engineering, and ‡Department of Physics, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Yan Zheng
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Key Laboratory for Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemical Biology, College of Chemistry and Chemical Engineering, and ‡Department of Physics, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Shuo Wang
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Key Laboratory for Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemical Biology, College of Chemistry and Chemical Engineering, and ‡Department of Physics, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Bin Ren
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Key Laboratory for Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemical Biology, College of Chemistry and Chemical Engineering, and ‡Department of Physics, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Zhilin Yang
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Key Laboratory for Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemical Biology, College of Chemistry and Chemical Engineering, and ‡Department of Physics, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Xiaomei Yan
- MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Key Laboratory for Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemical Biology, College of Chemistry and Chemical Engineering, and ‡Department of Physics, Xiamen University, Xiamen, Fujian 361005, P. R. China
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26
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Karnam L, Brambilla L, Del Zoppo M, Bertarelli C. Metal-enhanced Förster resonance energy transfer (ME-FRET) in anthracene/tetracene-doped crystal systems. Phys Chem Chem Phys 2017; 19:30734-30739. [DOI: 10.1039/c7cp01553d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Energy transfer in host–guest acene crystals fostered by metal nanoparticles resulting in efficient down-converted emission.
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Affiliation(s)
- L. Karnam
- Center for Nano Science and Technology@Polimi, Istituto Italiano di Tecnologia
- 20133 Milano
- Italy
- Dipartimento di Chimica, Materiali e Ing. Chimica “G. Natta”, Politecnico di Milano
- 20133 Milano
| | - L. Brambilla
- Dipartimento di Chimica, Materiali e Ing. Chimica “G. Natta”, Politecnico di Milano
- 20133 Milano
- Italy
| | - M. Del Zoppo
- Dipartimento di Chimica, Materiali e Ing. Chimica “G. Natta”, Politecnico di Milano
- 20133 Milano
- Italy
| | - C. Bertarelli
- Center for Nano Science and Technology@Polimi, Istituto Italiano di Tecnologia
- 20133 Milano
- Italy
- Dipartimento di Chimica, Materiali e Ing. Chimica “G. Natta”, Politecnico di Milano
- 20133 Milano
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27
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Yuan B, Jiang X, Yao C, Bao M, Liu J, Dou Y, Xu Y, He Y, Yang K, Ma Y. Plasmon-enhanced fluorescence imaging with silicon-based silver chips for protein and nucleic acid assay. Anal Chim Acta 2016; 955:98-107. [PMID: 28088285 DOI: 10.1016/j.aca.2016.11.059] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 11/21/2016] [Accepted: 11/22/2016] [Indexed: 12/30/2022]
Abstract
Metal-enhanced fluorescence shows great potential for improving the sensitivity of fluoroscopy, which has been widely used in protein and nucleic acid detection for biosensor and bioassay applications. In comparison with the traditional glass-supported metal nanoparticles (MNPs), the introduction of a silicon substrate has been shown to provide an increased surface-enhanced Raman scattering (SERS) effect due to the coupling between the MNPs and the semiconducting silicon substrate. In this work, we further study the fluorescence-enhanced effect of the silicon-supported silver-island (Ag@Si) plasmonic chips. In particular, we investigate their practical application of improving the traditional immunoassay such as the biotin-streptavidin-based protein assay and the protein-/nucleic acid-labeled cell and tissue samples. The protein assay shows a wavelength-dependent enhancement effect of the Ag@Si chip, with an enhancement factor ranging from 1.2 (at 532 nm) to 57.3 (at 800 nm). Moreover, for the protein- and nucleic acid-labeled cell and tissue samples, the Ag@Si chip provides a fluorescence enhancement factor of 3.0-4.1 (at 800 nm) and a significant improvement in the signal/background ratio for the microscopy images. Such a ready accommodation of the fluorescence-enhanced effect for the immunoassay samples with simple manipulations indicates broad potential for applications of the Ag@Si chip not only in biological studies but also in the clinical field.
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Affiliation(s)
- Bing Yuan
- College of Physics, Optoelectronics and Energy, Soochow University, Suzhou 215006, PR China; Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, PR China.
| | - Xiangxu Jiang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, PR China
| | - Chu Yao
- College of Physics, Optoelectronics and Energy, Soochow University, Suzhou 215006, PR China; Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, PR China
| | - Meimei Bao
- College of Physics, Optoelectronics and Energy, Soochow University, Suzhou 215006, PR China; Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, PR China
| | - Jiaojiao Liu
- College of Physics, Optoelectronics and Energy, Soochow University, Suzhou 215006, PR China; Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, PR China
| | - Yujiang Dou
- School of Electronic and Information Engineering, Soochow University, Suzhou 215006, PR China
| | - Yinze Xu
- School of Engineering, University of Guelph, Guelph N1G 2W1, Canada
| | - Yao He
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, PR China.
| | - Kai Yang
- College of Physics, Optoelectronics and Energy, Soochow University, Suzhou 215006, PR China; Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, PR China.
| | - Yuqiang Ma
- College of Physics, Optoelectronics and Energy, Soochow University, Suzhou 215006, PR China; Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, PR China; National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, PR China
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Konoshchuk NV, Posudievsky OY, Koshechko VG, Pokhodenko VD. Luminescent Characteristics of Nanocomposite Films Based on Conjugated Copolymer Superyellow and Gold Nanoparticles. THEOR EXP CHEM+ 2016. [DOI: 10.1007/s11237-016-9452-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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29
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Dye-Doped Fluorescent Silica Nanoparticles for Live Cell and In Vivo Bioimaging. NANOMATERIALS 2016; 6:nano6050081. [PMID: 28335209 PMCID: PMC5302498 DOI: 10.3390/nano6050081] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Revised: 04/20/2016] [Accepted: 04/20/2016] [Indexed: 11/17/2022]
Abstract
The need for novel design strategies for fluorescent nanomaterials to improve our understanding of biological activities at the molecular level is increasing rapidly. Dye-doped fluorescent silica nanoparticles (SiNPs) emerge with great potential for developing fluorescence imaging techniques as a novel and ideal platform for the monitoring of living cells and the whole body. Organic dye-containing fluorescent SiNPs exhibit many advantages: they have excellent biocompatibility, are non-toxic, highly hydrophilic, optically transparent, size-tunable and easily modified with various biomolecules. The outer silica shell matrix protects fluorophores from outside chemical reaction factors and provides a hydrophilic shell for the insoluble nanoparticles, which enhances the photo-stability and biocompatibility of the organic fluorescent dyes. Here, we give a summary of the synthesis, characteristics and applications of fluorescent SiNPs for non-invasive fluorescence bioimaging in live cells and in vivo. Additionally, the challenges and perspectives of SiNPs are also discussed. We prospect that the further development of these nanoparticles will lead to an exciting breakthrough in the understanding of biological processes.
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30
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Planas O, Macia N, Agut M, Nonell S, Heyne B. Distance-Dependent Plasmon-Enhanced Singlet Oxygen Production and Emission for Bacterial Inactivation. J Am Chem Soc 2016; 138:2762-8. [DOI: 10.1021/jacs.5b12704] [Citation(s) in RCA: 112] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Oriol Planas
- Institut
Quimic de Sarria, Universitat Ramon Llull, Barcelona 08022, Spain
| | - Nicolas Macia
- Department
of Chemistry, University of Calgary, Alberta AB T2N 1N4, Canada
| | - Montserrat Agut
- Institut
Quimic de Sarria, Universitat Ramon Llull, Barcelona 08022, Spain
| | - Santi Nonell
- Institut
Quimic de Sarria, Universitat Ramon Llull, Barcelona 08022, Spain
| | - Belinda Heyne
- Department
of Chemistry, University of Calgary, Alberta AB T2N 1N4, Canada
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31
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Bongu SR, Veluthandath AV, Nanda B, Ramaprabhu S, Bisht PB. Control over the charge transfer in dye-nanoparticle decorated graphene. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2015.12.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Cepraga C, Favier A, Lerouge F, Alcouffe P, Chamignon C, Lanoë PH, Monnereau C, Marotte S, Ben Daoud E, Marvel J, Leverrier Y, Andraud C, Parola S, Charreyre MT. Fluorescent gold nanoparticles with chain-end grafted RAFT copolymers: influence of the polymer molecular weight and type of chromophore. Polym Chem 2016. [DOI: 10.1039/c6py01625a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorescence of gold nanoparticles functionalized with chain-end grafted RAFT copolymers increases with polymer corona thickness.
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Affiliation(s)
| | - Arnaud Favier
- Univ Lyon
- Ens de Lyon
- CNRS
- Laboratoire Joliot-Curie
- F-69364 Lyon
| | | | - Pierre Alcouffe
- Univ Lyon
- INSA de Lyon
- Université Lyon 1
- CNRS
- Laboratoire Ingénierie des Matériaux Polymères
| | - Cécile Chamignon
- Univ Lyon
- INSA de Lyon
- Université Lyon 1
- CNRS
- Laboratoire Ingénierie des Matériaux Polymères
| | | | | | - Sophie Marotte
- Univ Lyon
- Ens de Lyon
- CNRS
- Laboratoire Joliot-Curie
- F-69364 Lyon
| | - Edna Ben Daoud
- Univ Lyon
- Ens de Lyon
- CNRS
- Laboratoire Joliot-Curie
- F-69364 Lyon
| | | | | | - Chantal Andraud
- Univ Lyon
- Ens de Lyon
- CNRS
- Université Lyon 1
- Laboratoire de Chimie
| | - Stéphane Parola
- Univ Lyon
- Ens de Lyon
- CNRS
- Université Lyon 1
- Laboratoire de Chimie
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33
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Raut SL, Rich R, Shtoyko T, Bora I, Laursen BW, Sørensen TJ, Borejdo J, Gryczynski Z, Gryczynski I. Sandwich type plasmonic platform for MEF using silver fractals. NANOSCALE 2015; 7:17729-17734. [PMID: 26452215 PMCID: PMC4808630 DOI: 10.1039/c5nr05834a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In this report, we describe a plasmonic platform with silver fractals for metal enhanced fluorescence (MEF) measurements. When a dye containing surface was brought into contact with silver fractals, a significantly enhanced fluorescence signal from the dye was observed. Fluorescence enhancement was studied with the N-methyl-azadioxatriangulenium chloride salt (Me-ADOTA·Cl) in PVA films made from 0.2% PVA (w/v) solution spin-coated on a clean glass coverslip. The Plasmonic Platforms (PP) were assembled by pressing together silver fractals on one glass slide and a separate glass coverslip spin-coated with a uniform Me-ADOTA·Cl in PVA film. In addition, we also tested ADOTA labeled human serum albumin (HSA) deposited on a glass slide for potential PP bioassay applications. Using the new PP, we could achieve more than a 20-fold fluorescence enhancement (bright spots) accompanied by a decrease in the fluorescence lifetime. The experimental results were used to calculate the extinction (excitation) enhancement factor (GA) and fluorescence radiative rate enhancements factor (GF). No change in emission spectrum was observed for a dye with or without contact with fractals. Our studies indicate that this type of PP can be a convenient approach for constructing assays utilizing metal enhanced fluorescence (MEF) without the need for depositing the material directly on metal structures platforms.
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Affiliation(s)
- Sangram L Raut
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX, USA. and Department of Cell Biology and Immunology, University of North Texas Health Science Center, Fort Worth, TX, USA.
| | - Ryan Rich
- Department of Cell Biology and Immunology, University of North Texas Health Science Center, Fort Worth, TX, USA.
| | - Tanya Shtoyko
- Department of Chemistry and Biochemistry, University of Texas at Tyler, Tyler, TX, USA
| | - Ilkay Bora
- Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | - Bo W Laursen
- Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | | | - Julian Borejdo
- Department of Cell Biology and Immunology, University of North Texas Health Science Center, Fort Worth, TX, USA.
| | - Zygmunt Gryczynski
- Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX, USA. and Department of Cell Biology and Immunology, University of North Texas Health Science Center, Fort Worth, TX, USA.
| | - Ignacy Gryczynski
- Department of Cell Biology and Immunology, University of North Texas Health Science Center, Fort Worth, TX, USA.
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35
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Metal-Enhanced Fluorescence of Dye-Doped Silica Nano Particles. J Fluoresc 2015; 25:311-7. [DOI: 10.1007/s10895-015-1510-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 01/04/2015] [Indexed: 11/27/2022]
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36
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Andreussi O, Caprasecca S, Cupellini L, Guarnetti-Prandi I, Guido CA, Jurinovich S, Viani L, Mennucci B. Plasmon Enhanced Light Harvesting: Multiscale Modeling of the FMO Protein Coupled with Gold Nanoparticles. J Phys Chem A 2014; 119:5197-206. [DOI: 10.1021/jp509870b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Oliviero Andreussi
- Department of Chemistry, University of Pisa, Via Moruzzi 3, 56124 Pisa, Italy
| | - Stefano Caprasecca
- Department of Chemistry, University of Pisa, Via Moruzzi 3, 56124 Pisa, Italy
| | - Lorenzo Cupellini
- Department of Chemistry, University of Pisa, Via Moruzzi 3, 56124 Pisa, Italy
| | | | - Ciro A. Guido
- Department of Chemistry, University of Pisa, Via Moruzzi 3, 56124 Pisa, Italy
| | - Sandro Jurinovich
- Department of Chemistry, University of Pisa, Via Moruzzi 3, 56124 Pisa, Italy
| | - Lucas Viani
- Department of Chemistry, University of Pisa, Via Moruzzi 3, 56124 Pisa, Italy
| | - Benedetta Mennucci
- Department of Chemistry, University of Pisa, Via Moruzzi 3, 56124 Pisa, Italy
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37
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Pushpavanam K, Santra S, Rege K. Biotemplating plasmonic nanoparticles using intact microfluidic vasculature of leaves. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:14095-14103. [PMID: 25363517 DOI: 10.1021/la5041568] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Leaves are an abundant natural resource, and consist of a sophisticated microfluidic network of veins that transport nutrients and water, thereby enabling photosynthesis. Here, we simultaneously exploit the microfluidics as well as chemistry of processed leaf vasculature (venation) in order to template the in situ generation of plasmonic metal (gold and silver) nanoparticles under ambient conditions. This biotemplating approach involves capillary flow of metal salts through skeleton leaf vasculature, and does not require additional reducing agents for plasmonic nanoparticle formation. Gold nanoparticles, 30-40 nm in diameter, and silver nanoparticles, approximately 9 nm in diameter, were formed within the intact leaf vasculature using this method. Absorption spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and electron diffraction analyses were employed to ascertain the formation of nanoparticles in the leaf veins. Fourier transform infrared (FT-IR) spectroscopy was employed in order to obtain insights into functional groups responsible for formation of the plasmonic nanoparticles within the leaves. Gold nanoparticles, templated within leaves, demonstrated excellent catalytic properties, thereby imparting catalytic and plasmonic properties to the leaf itself. Furthermore, nanoparticles can be recovered from the leaves as soluble dispersions by simply combusting the organic leaf matter. Taken together, this is a simple yet powerful biotemplating approach for the generation of plasmonic nanoparticles and formation of biotic-abiotic structures for diverse, low-cost applications in sensing, catalysis, and medicine.
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Affiliation(s)
- Karthik Pushpavanam
- Chemical Engineering, Arizona State University , Tempe, Arizona 85287-6106, United States
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38
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Pang Y, Rong Z, Wang J, Xiao R, Wang S. A fluorescent aptasensor for H5N1 influenza virus detection based-on the core-shell nanoparticles metal-enhanced fluorescence (MEF). Biosens Bioelectron 2014; 66:527-32. [PMID: 25506900 DOI: 10.1016/j.bios.2014.10.052] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 10/11/2014] [Accepted: 10/20/2014] [Indexed: 12/30/2022]
Abstract
A fluorescent aptasensor system has been designed for the sensitive detection of recombinant hemagglutinin (rHA) protein of the H5N1 influenza virus in human serum. Guanine-richen anti-rHA aptamers by SELEX were immobilized on the surface of the Ag@SiO2 nanoparticles which performed as a metal-enhanced fluorescence (MEF) sensing platform. Thiazole orange (TO) was used as fluorescent tag which reported to the G-quadruplex secondary structural induced by aptamer-rHA binding event. In the absence of rHA protein, TO was free in the solution with almost no fluorescence emission. When rHA protein was added to the solution, the aptamer strand bound rHA protein to form a stable G-quadruplex complex, which can bind TO and excite the fluorescence emission of TO. Moreover, the excited-state TO captured by the G-quadruplex complex was forced to the surface of the Ag@SiO2 nanoparticles and could experience a surface plasmon resonance enhancement which can be transformed into more efficient fluorescence emission signals, therefore, the fluorescence signal of TO can be amplified largely. This system does not require covalent labeling with fluorophores to the aptamer and the background noise is very low. The detection of rHA protein of the H5N1 influenza virus could be operated both in aqueous buffer and human serum with the detection limit of 2 and 3.5ng/mL respectively. More important, the whole detection process can be finished in a PE tube within 30min, which makes it suitable as a self-contained diagnostic kit for H5N1 influenza virus point-of-care (POC) diagnostic.
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Affiliation(s)
- Yuanfeng Pang
- Beijing Institute of Radiation Medicine, Beijing Key Laboratory of New Molecular Diagnosis Techniques for Infectious Dedication, 27 Taiping Road, Beijing, China
| | - Zhen Rong
- Beijing Institute of Radiation Medicine, Beijing Key Laboratory of New Molecular Diagnosis Techniques for Infectious Dedication, 27 Taiping Road, Beijing, China
| | - Junfeng Wang
- Beijing Institute of Radiation Medicine, Beijing Key Laboratory of New Molecular Diagnosis Techniques for Infectious Dedication, 27 Taiping Road, Beijing, China
| | - Rui Xiao
- Beijing Institute of Radiation Medicine, Beijing Key Laboratory of New Molecular Diagnosis Techniques for Infectious Dedication, 27 Taiping Road, Beijing, China.
| | - Shengqi Wang
- Beijing Institute of Radiation Medicine, Beijing Key Laboratory of New Molecular Diagnosis Techniques for Infectious Dedication, 27 Taiping Road, Beijing, China.
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39
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Li J, Busscher HJ, Swartjes JJTM, Chen Y, Harapanahalli AK, Norde W, van der Mei HC, Sjollema J. Residence-time dependent cell wall deformation of different Staphylococcus aureus strains on gold measured using surface-enhanced-fluorescence. SOFT MATTER 2014; 10:7638-7646. [PMID: 25130697 DOI: 10.1039/c4sm00584h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Bacterial adhesion to surfaces is accompanied by cell wall deformation that may extend to the lipid membrane with an impact on the antimicrobial susceptibility of the organisms. Nanoscale cell wall deformation upon adhesion is difficult to measure, except for Δpbp4 mutants, deficient in peptidoglycan cross-linking. This work explores surface enhanced fluorescence to measure the cell wall deformation of Staphylococci adhering on gold surfaces. Adhesion-related fluorescence enhancement depends on the distance of the bacteria from the surface and the residence-time of the adhering bacteria. A model is forwarded based on the adhesion-related fluorescence enhancement of green-fluorescent microspheres, through which the distance to the surface and cell wall deformation of adhering bacteria can be calculated from their residence-time dependent adhesion-related fluorescence enhancement. The distances between adhering bacteria and a surface, including compression of their extracellular polymeric substance (EPS)-layer, decrease up to 60 min after adhesion, followed by cell wall deformation. Cell wall deformation is independent of the integrity of the EPS-layer and proceeds fastest for a Δpbp4 strain.
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Affiliation(s)
- Jiuyi Li
- University of Groningen and University Medical Center Groningen, Department of Biomedical Engineering, 9713 AV Groningen, The Netherlands.
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40
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Dual labeled Ag@SiO₂ core-shell nanoparticle based optical immunosensor for sensitive detection of E. coli. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 45:337-42. [PMID: 25491837 DOI: 10.1016/j.msec.2014.09.028] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Revised: 04/28/2014] [Accepted: 09/14/2014] [Indexed: 11/23/2022]
Abstract
An optical nanobiosensor is presented using a fluorescent dye and anti-E. coli McAb anchored Ag@Silica core shell nanoparticles, for rapid and sensitive Escherichia coli detection in environmental samples. The synthesized dual labeled core shell (DLCS) nanoparticle shows intense fluorescence at 620 nm in solution, having a narrow emission with full width at half maxima (FWHM) of 10 nm, as a prerequisite to develop a sensitive detection platform for various biosensing applications. The specific E. coli was captured using an anti-E. coli antibody functionalized quartz glass, followed by a treatment with DLCS, where the photoluminescence spectroscopy was used to detect the target pathogen. The fabrication of the quartz glass based optical-immunosensor was monitored, and the results show changes in the photoluminescent patterns, which substantiate that varied species were immobilized on the surface of the antibody modified quartz glass. Consequently, the optical immunosensor demonstrated specificity and improved sensitivity, as compared to the customary methods, and was able to detect as low as 5CFU/mL. The developed DLCS based optical immunosensor was evaluated with environmental water samples, which showed acceptable precision, reproducibility and stability, and could be readily applied to the routine monitoring of pathogenic microorganisms in the environmental samples, and most importantly, demonstrate the potential of a prototype development of a simple and inexpensive diagnostic technique.
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41
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Zhou Z, Li T, Huang H, Chen Y, Liu F, Huang C, Li N. A dual amplification strategy for DNA detection combining bio-barcode assay and metal-enhanced fluorescence modality. Chem Commun (Camb) 2014; 50:13373-6. [DOI: 10.1039/c4cc05554c] [Citation(s) in RCA: 21] [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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42
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Surface-enhanced fluorescence immunosensor using Au nano-crosses for the detection of microcystin-LR. Biosens Bioelectron 2014; 62:255-60. [PMID: 25016333 DOI: 10.1016/j.bios.2014.06.064] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 06/27/2014] [Accepted: 06/30/2014] [Indexed: 01/12/2023]
Abstract
A surface-enhanced fluorescence (SEF) immunosensor for the detection of microcystin-LR was developed using Au nano-crosses as fluorescence enhancement nanoparticles and cy5 as a fluorescence label molecule. The SEF effects of cy5 in the proximity of Au nanorods and gold nano-crosses was investigated by using Au nanorods or nano-crosses coated negative-charged glass surfaces. Fluorescence measurements indicated that SEF was influenced by the size, shape and distribution of the Au nanoparticles, with an appropriate spacer layer between the Au nanoparticles and the cy5. The enhancement factor was from 2.3- to 35-fold. Under optimal conditions, the SEF immunosensor exhibited a good linear response at microcystin-LR concentrations of 0.02-16 ng mL(-1) (R(2)=0.9981). The limit of detection was 0.007 ng mL(-1) with little adsorption of microcystin-RR, microcystin-LW, and microcystin-LF. High microcystin-LR recoveries were obtained from naturally contaminated fish samples. The SEF immunosensor allows the reliable detection of microcystin-LR in seafood, and has potential in simple, sensitive detection applications.
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43
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Mishra H, Mali BL, Karolin J, Dragan AI, Geddes CD. Experimental and theoretical study of the distance dependence of metal-enhanced fluorescence, phosphorescence and delayed fluorescence in a single system. Phys Chem Chem Phys 2014; 15:19538-44. [PMID: 24100377 DOI: 10.1039/c3cp50633a] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Distance dependent singlet and triplet metal-enhanced emission of eosin from silica coated silver island films (SiFs) has been studied by steady-state and time resolved fluorescence techniques, along with theoretical finite difference time domain (FDTD) numerical simulations, to understand how the thickness of the dielectric coating surrounding silver nanoparticles fundamentally affects luminescence enhancement. Our findings suggest that the distance dependence of metal-enhanced phenomena such as fluorescence, phosphorescence and delayed fluorescence is underpinned by the decay of the electric near-field, and depending on the actual silver silica sample embodiment, one can see either decreased or enhanced luminescence. These results not only expand our current MEF thinking but also suggest that one may well be able to approximate plasmon-enhanced luminescence values.
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Affiliation(s)
- Hirdyesh Mishra
- The Institute of Fluorescence and Department of Chemistry & Biochemistry, University of Maryland Baltimore County, 701 East Pratt Street, Baltimore, MD 21202, USA.
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44
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Wu RH, Nguyen TP, Marquart GW, Miesen TJ, Mau T, Mackiewicz MR. A facile route to tailoring peptide-stabilized gold nanoparticles using glutathione as a synthon. Molecules 2014; 19:6754-75. [PMID: 24858266 PMCID: PMC6271629 DOI: 10.3390/molecules19056754] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Revised: 05/20/2014] [Accepted: 05/21/2014] [Indexed: 12/13/2022] Open
Abstract
The preparation of gold nanoparticles (AuNPs) of high purity and stability remains a major challenge for biological applications. This paper reports a simple synthetic strategy to prepare water-soluble peptide-stabilized AuNPs. Reduced glutathione, a natural tripeptide, was used as a synthon for the growth of two peptide chains directly on the AuNP surface. Both nonpolar (tryptophan and methionine) and polar basic (histidine and dansylated arginine) amino acids were conjugated to the GSH-capped AuNPs. Ultracentrifugation concentrators with polyethersulfone (PES) membranes were used to purify precursor materials in each stage of the multi-step synthesis to minimize side reactions. Thin layer chromatography, transmission electron microscopy, UV-Visible, 1H-NMR, and fluorescence spectroscopies demonstrated that ultracentrifugation produces high purity AuNPs, with narrow polydispersity, and minimal aggregation. More importantly, it allows for more control over the composition of the final ligand structure. Studies under conditions of varying pH and ionic strength revealed that peptide length, charge, and hydrophobicity influence the stability as well as solubility of the peptide-capped AuNPs. The synthetic and purification strategies used provide a facile route for developing a library of tailored biocompatible peptide-stabilized AuNPs for biomedical applications.
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Affiliation(s)
- Rosina Ho Wu
- Department of Chemistry, Portland State University, Portland, OR 97201, USA
| | - Tan P Nguyen
- Department of Chemistry, Portland State University, Portland, OR 97201, USA
| | - Grant W Marquart
- Department of Chemistry, Portland State University, Portland, OR 97201, USA
| | - Thomas J Miesen
- Department of Chemistry, Portland State University, Portland, OR 97201, USA
| | - Theresa Mau
- Department of Chemistry, Portland State University, Portland, OR 97201, USA
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45
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Lu L, Qian Y, Wang L, Ma K, Zhang Y. Metal-enhanced fluorescence-based core-shell Ag@SiO₂ nanoflares for affinity biosensing via target-induced structure switching of aptamer. ACS APPLIED MATERIALS & INTERFACES 2014; 6:1944-50. [PMID: 24480015 DOI: 10.1021/am4049942] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
One of the great challenges in metal-enhanced fluorescence (MEF) technology is the achievement of distance modulation with nanometer accuracy between the fluorophore and metal surface to obtain maximum enhancement. We propose an MEF-based core-shell Ag@SiO2 nanoflare for distance control via the thickness of silica shell with cooperation of DNA hybridization. The nanoflare contains a 50 nm spherical silver nanoparticle (Ag NP) core, a 8 nm silica shell, and cyanine (Cy5)-labeled aptamer hybridized with a complementary DNA (cDNA) immobilized onto the shell surface. The formation of the Cy5-labeled aptamer/cDNA duplex on the Ag@SiO2 NP surface results in the confinement of Cy5 to the shell surface and an increase in the fluorescence of Cy5 with a 32-fold enhancement factor in bulk solution (signal-on). In the presence of affinity-binding targets, the Cy5-labeled aptamers confined onto the Ag@SiO2 NP surface dissociate from their cDNA into the solution because of structure switching. The target-induced release of aptamer leads to a reduction in the enhanced fluorescence signal of the labeled Cy5 moiety (signal-off). Thus, the nanoflare can be used as a sensor for target recognition. Using adenosine-5'-triphosphate (ATP) aptamer, detection of ATP has a linear response from 0 to 0.5 mM and a detection limit of 8 μM. With various types of DNA probes immobilized onto the core-shell Ag@SiO2 NPs, the MEF-based nanoflare has provided an effective platform for the detection and quantification of a broad range of analytes, such as mRNA regulation and detection, cell sorting, and gene profiling.
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Affiliation(s)
- Lu Lu
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education and ‡Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710062, China
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46
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Zhou Z, Huang H, Chen Y, Liu F, Huang CZ, Li N. A distance-dependent metal-enhanced fluorescence sensing platform based on molecular beacon design. Biosens Bioelectron 2014; 52:367-73. [DOI: 10.1016/j.bios.2013.09.013] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 09/04/2013] [Accepted: 09/06/2013] [Indexed: 01/06/2023]
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47
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Li A, Liu J, Liu G, Zhang J, Feng S. Design and synthesis of fluorescent core-shell nanoparticles with tunable lower critical solution temperature behavior and metal-enhanced fluorescence. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26974] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Aihua Li
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education and School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 People's Republic of China
| | - Jingquan Liu
- College of Chemistry, Chemical and Environmental Engineering, Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory; Qingdao University; Qingdao 266071 People's Republic of China
| | - Guozhen Liu
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry; Central China Normal University; Wuhan 430079 People's Republic of China
| | - Jizhen Zhang
- College of Chemistry, Chemical and Environmental Engineering, Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory; Qingdao University; Qingdao 266071 People's Republic of China
| | - Shengyu Feng
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education and School of Chemistry and Chemical Engineering; Shandong University; Jinan 250100 People's Republic of China
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