51
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Highly ordered Au-decorated Ag nanorod arrays as an ultrasensitive and reusable substrate for surface enhanced Raman scattering. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.10.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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52
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Magnetite-Supported Gold Nanostars for the Uptake and SERS Detection of Tetracycline. NANOMATERIALS 2018; 9:nano9010031. [PMID: 30591645 PMCID: PMC6359395 DOI: 10.3390/nano9010031] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 12/20/2018] [Accepted: 12/21/2018] [Indexed: 01/17/2023]
Abstract
Magnetite nanoparticles (MNPs) decorated with gold nanostars (AuNSs) have been prepared by using a seed growth method without the addition of surfactants or colloidal stabilizers. The hybrid nanomaterials were investigated as adsorbents for the uptake of tetracycline (TC) from aqueous solutions and subsequent detection using surface-enhanced Raman scattering (SERS). Several parameters were investigated in order to optimize the performance of these hybrid platforms on the uptake and SERS detection of TC, including variable pH values and the effect of contact time on the removal of TC. The spatial distribution of TC and AuNS on the hybrid composites was accomplished by coupling SERS analysis with Raman imaging studies, allowing also for the determination of the detection limit for TC when dissolved in ultrapure water (10 nM) and in more complex aqueous matrices (1 μM). Attempts were also made to investigate the adsorption modes of the TC molecules at the surface of the metal NPs by taking into account the enhancement of the Raman bands in these different matrices.
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53
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Kayran YU, Jambrec D, Schuhmann W. Nanostructured DNA Microarrays for Dual SERS and Electrochemical Read-out. ELECTROANAL 2018. [DOI: 10.1002/elan.201800579] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yasin U. Kayran
- Analytical Chemistry - Center for Electrochemical Sciences (CES), Ruhr-Universität Bochum; Faculty of Chemistry and Biochemistry; Universitätsstr. 150 D-44780 Bochum Germany
| | - Daliborka Jambrec
- Analytical Chemistry - Center for Electrochemical Sciences (CES), Ruhr-Universität Bochum; Faculty of Chemistry and Biochemistry; Universitätsstr. 150 D-44780 Bochum Germany
| | - Wolfgang Schuhmann
- Analytical Chemistry - Center for Electrochemical Sciences (CES), Ruhr-Universität Bochum; Faculty of Chemistry and Biochemistry; Universitätsstr. 150 D-44780 Bochum Germany
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54
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Tobaldi DM, Leonardi SG, Movlaee K, Lajaunie L, Seabra MP, Arenal R, Neri G, Labrincha JA. Hybrid Noble-Metals/Metal-Oxide Bifunctional Nano-Heterostructure Displaying Outperforming Gas-Sensing and Photochromic Performances. ACS OMEGA 2018; 3:9846-9859. [PMID: 31459113 PMCID: PMC6644435 DOI: 10.1021/acsomega.8b01508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Accepted: 08/10/2018] [Indexed: 06/10/2023]
Abstract
As nanomaterials are dominating 21st century's scene, multiple functionality in a single (nano)structure is becoming very appealing. Inspired by the Land of the Rising Sun, we designed a bifunctional (gas-sensor/photochromic) nanomaterial, made with TiO2 whose surface was simultaneously decorated with copper and silver (the Cu/Ag molar ratio being 3:1). This nanomaterial outperformed previous state-of-the-art TiO2-based sensors for the detection of acetone, as well as the Cu-TiO2-based photochromic material. It indeed possessed splendid sensitivity toward acetone (detection limit of 100 ppb, 5 times lower than previous state-of-the-art TiO2-based acetone sensors), as well as reduced response/recovery times at very low working temperature, 150 °C, for acetone sensing. Still, the same material showed itself to be able to (reversibly) change in color when stimulated by both UV-A and, most remarkably, visible light. Indeed, the visible-light photochromic performance was almost 3 times faster compared to the standard Cu-TiO2 photochromic material-that is, 4.0 min versus 10.8 min, respectively. It was eventually proposed that the photochromic behavior was triggered by different mechanisms, depending on the light source used.
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Affiliation(s)
- David Maria Tobaldi
- Department
of Materials and Ceramics Engineering/CICECO−Aveiro Institute
of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | | | - Kaveh Movlaee
- Department
of Engineering, University of Messina, C.da Di Dio, 98166 Messina, Italy
- Center
of Excellence in Electrochemistry, School of Chemistry, College of
Science, University of Tehran, 14155-6455 Tehran, Iran
| | - Luc Lajaunie
- Laboratorio
de Microscopías Avanzadas, Instituto de Nanociencia de Aragón, Universidad de Zaragoza, 50018 Zaragoza, Spain
| | - Maria Paula Seabra
- Department
of Materials and Ceramics Engineering/CICECO−Aveiro Institute
of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Raul Arenal
- Laboratorio
de Microscopías Avanzadas, Instituto de Nanociencia de Aragón, Universidad de Zaragoza, 50018 Zaragoza, Spain
- ARAID
Foundation, 50018 Zaragoza, Spain
| | - Giovanni Neri
- Department
of Engineering, University of Messina, C.da Di Dio, 98166 Messina, Italy
| | - João António Labrincha
- Department
of Materials and Ceramics Engineering/CICECO−Aveiro Institute
of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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55
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Eremina OE, Semenova AA, Sergeeva EA, Brazhe NA, Maksimov GV, Shekhovtsova TN, Goodilin EA, Veselova IA. Surface-enhanced Raman spectroscopy in modern chemical analysis: advances and prospects. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4804] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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56
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Kogikoski S, Khanra S, Alves WA, Guha S. SERS active self-assembled diphenylalanine micro/nanostructures: A combined experimental and theoretical investigation. J Chem Phys 2018; 147:084703. [PMID: 28863534 DOI: 10.1063/1.4990828] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Enhancing Raman signatures of molecules by self-assembled metal nanoparticles, nanolithography patterning, or by designing plasmonic nanostructures is widely used for detection of low abundance biological systems. Self-assembled peptide nanostructures provide a natural template for tethering Au and Ag nanoparticles due to its fractal surface. Here, we show the use of L,L-diphenylalanine micro-nanostructures (FF-MNSs) for the organization of Ag and Au nanoparticles (Nps) and its potential as surface-enhanced Raman scattering (SERS)-active substrates. The FF-MNSs undergo an irreversible phase transition from hexagonally packed (hex) micro-nanotubes to an orthorhombic (ort) structure at ∼150 °C. The metal Nps form chains on hex FF-MNSs as inferred from transmission electron microscopy images and a uniform non-aggregated distribution in the ort phase. The high luminescence from the ort FF-MNS phase precludes SERS measurements with AgNps. The calculated Raman spectra using density-functional theory shows a higher intensity from rhodamine 6G (R6G) molecule in the presence of an Ag atom bound to ort FF compared with hex FF. The SERS spectra obtained from R6G bound to FF-MNSs with AuNps clearly show a higher enhancement for the ort phase compared with hex FF, corroborating our theoretical calculations. Our results indicate that FF-MNSs both in the hex and ort phases can be used as substrates for the SERS analysis with different metal nanoparticles, opening up a novel class of optically active bio-based substrates.
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Affiliation(s)
- Sergio Kogikoski
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-580 Santo André, SP, Brazil
| | - Soma Khanra
- Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, USA
| | - Wendel A Alves
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-580 Santo André, SP, Brazil
| | - Suchismita Guha
- Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, USA
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57
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Pinheiro PC, Daniel-da-Silva AL, Nogueira HIS, Trindade T. Functionalized Inorganic Nanoparticles for Magnetic Separation and SERS Detection of Water Pollutants. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800132] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Paula C. Pinheiro
- Department of Chemistry-CICECO; University of Aveiro; 3810-193 Aveiro Portugal
| | | | | | - Tito Trindade
- Department of Chemistry-CICECO; University of Aveiro; 3810-193 Aveiro Portugal
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58
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Fateixa S, Raposo M, Nogueira H, Trindade T. A general strategy to prepare SERS active filter membranes for extraction and detection of pesticides in water. Talanta 2018; 182:558-566. [DOI: 10.1016/j.talanta.2018.02.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 02/01/2018] [Accepted: 02/04/2018] [Indexed: 11/28/2022]
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59
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Fateixa S, Nogueira HIS, Trindade T. Surface-Enhanced Raman Scattering Spectral Imaging for the Attomolar Range Detection of Crystal Violet in Contaminated Water. ACS OMEGA 2018; 3:4331-4341. [PMID: 31458659 PMCID: PMC6641606 DOI: 10.1021/acsomega.7b01983] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 03/27/2018] [Indexed: 05/29/2023]
Abstract
A series of nanocomposites based on polyamide (NL16, PA) filter membranes containing metal nanoparticles (NPs) have been prepared by filtration under reduced pressure of the metal colloids. The ensuing materials were then investigated as substrates for surface-enhanced Raman scattering (SERS) imaging studies envisaging the spectroscopic detection of vestigial organic pollutants dissolved in contaminated water. The organic dye crystal violet (CV) was used here as a model pollutant because it is a hazardous compound present in certain effluent waters. Moreover this compound is well-known for its strong SERS activity, which is clearly advantageous in the context of material development for SERS. Indeed, several preparative strategies were employed to prepare PA-based composites, and the impact on SERS detection was investigated. These include the use of chemical and morphological distinct plasmonic NPs (Ag, Au), a variable metal load and changing the order of addition of the analytical specimens. These studies demonstrate that the parameters employed in the fabrication of the SERS substrates have a strong impact on the Raman signal enhancement. The use of Raman imaging during the fabrication process allows establishing improvements that translate to better performances of the substrates in the analyte detection. The results have been interpreted by considering an integrated set of operational parameters that include the affinity of CV molecules to the substrate, amount and dispersion of NPs in the PA membranes, and the detection method. Noteworthy the use of SERS analysis assisted with Raman imaging allowed achieving a detection limit for CV as low as 100 aM in ultrapure water and 10 fM in real samples.
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60
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Warrier AR, Gandhimathi R. Surface plasmon resonance induced enhancement of photoluminescence and Raman line intensity in SnS quantum dot-Sn nanoparticle hybrid structure. Methods Appl Fluoresc 2018; 6:035009. [PMID: 29633725 DOI: 10.1088/2050-6120/aabcf2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
In this article, we report on enhancement in photoluminescence and Raman line intensity of SnS quantum dots embedded in a mesh of Sn nanostructures. SnS nanoparticles synthesized by homogenous precipitation method show strong quantum confinement with a band gap of ∼2.7 eV (blue shift of ∼1 eV compared to bulk SnS particles). The optical band gap of SnS quantum dots is controlled by varying the pH (∼0 to 2.25), ageing time (24 to 144 h) and molarity (0 to 2 M) of the precursors. These SnS nanoparticles are embedded in a mesh of Sn nanostructures which are synthesized from tin chloride by using sodium borohydride as reducing agent. The Sn nanostructures have a morphology dependent, tunable surface plasmon resonance (SPR), ranging from UV (∼295 nm) to visible region (∼400 nm) of the electromagnetic spectrum. In the SnS-Sn nanohybrids, the excitons are strongly coupled with plasmons leading to a shift in the excitonic binding energy (∼400 meV). The pure SnS quantum dots have a very weak photoluminescence peak at ∼560 nm and Raman shift of low intensity at 853.08 cm-1, 1078.17 cm-1, 1255.60 cm-1, 1466.91 cm-1. The coupling of SnS nanoparticles with Sn nanoparticles results in strong exciton-plasmon interactions leading to enhanced photoluminescence and Raman line intensity. The nanohybrids formed using Sn nanosheets whose SPR matches with absorption onset of the SnS nanoparticles shows an enhancement of ∼104 times higher than pure SnS nanoparticles. Thus, Sn nanosheet with surface plasmon resonance in visible region (400 nm) like Au and Ag is a promising material for surface enhanced Raman spectroscopy, plasmon assisted fluorescence imaging and for enhancing the emission intensity of semiconductors with weak emission intensity.
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Affiliation(s)
- Anita R Warrier
- Nanophotonics Research Laboratory, Department of Physics, Academy of Maritime Education and Training, 135, East Coast Road, Kanathur, Chennai-603112, India
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61
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Pereira SO, Barros-Timmons A, Trindade T. Polymer@gold Nanoparticles Prepared via RAFT Polymerization for Opto-Biodetection. Polymers (Basel) 2018; 10:E189. [PMID: 30966225 PMCID: PMC6415202 DOI: 10.3390/polym10020189] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 02/09/2018] [Accepted: 02/11/2018] [Indexed: 11/17/2022] Open
Abstract
Colloidal gold nanoparticles (Au NPs) have been used in several biological applications, which include the exploitation of size- and shape-dependent Localized Surface Plasmon Resonance (LSPR) in biosensing devices. In order to obtain functional and stable Au NPs in a physiological medium, surface modification and functionalization are crucial steps in these endeavors. Reversible addition-fragmentation chain transfer (RAFT) polymerization meets this need offering the possibility of control over the composition and architecture of polymeric shells coating Au NPs. Furthermore, playing with a careful choice of monomers, RAFT polymerization allows the possibility to design a polymer shell with the desired functional groups aiming at Au based nanocomposites suitable for biorecognition and biotargeting. This review provides important aspects concerning the synthesis and optical properties of Au NPs as well as concepts of RAFT polymerization. Understanding these concepts is crucial to appreciate the chemical strategies available towards RAFT-polymer coated Au core-shell nanostructures, which are here reviewed. Finally, examples of applications in opto-biodetection devices are provided and the potential of responsive "smart" nanomaterials based on such structures can be applied to other biological applications.
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Affiliation(s)
- Sónia O Pereira
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Ana Barros-Timmons
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Tito Trindade
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
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62
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Gómez M, Kadkhodazadeh S, Lazzari M. Surface enhanced Raman scattering (SERS) in the visible range on scalable aluminum-coated platforms. Chem Commun (Camb) 2018; 54:10638-10641. [DOI: 10.1039/c8cc04280b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Combining submicrometer-sized 3D structures with Al roughness for the development of sustainable SERS substrates.
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Affiliation(s)
- Manuel Gómez
- Departamento de Química Física
- Facultade de Química
- Universidade de Santiago de Compostela
- 15782 Santiago de Compostela
- Spain
| | - Shima Kadkhodazadeh
- Danchip/Center for Electron Nanoscopy (CEN)
- Technical University of Denmark
- Kgs. Lyngby 2800
- Denmark
| | - Massimo Lazzari
- Departamento de Química Física
- Facultade de Química
- Universidade de Santiago de Compostela
- 15782 Santiago de Compostela
- Spain
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63
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Nayak DR, Bhat N, Umapathy S. Hydrophobic mediated growth of galvanic-nanobuds from germanium nanowires for a highly tunable SERS substrate. NEW J CHEM 2018. [DOI: 10.1039/c8nj05106b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A SERS substrate is fabricated through a scalable process exhibiting suitable hotspot distribution, shelf life, tunability, and biological applications.
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Affiliation(s)
- Deepak Ranjan Nayak
- Centre for Nano Science and Engineering
- Indian Institute of Science
- Bangalore
- India
| | - Navakanta Bhat
- Centre for Nano Science and Engineering
- Indian Institute of Science
- Bangalore
- India
| | - Siva Umapathy
- Department of Inorganic and Physical Chemistry, Indian Institute of Science
- Bangalore
- India
- Indian Institute of Science Education and Research
- Bhopal
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64
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Surface Engineered Magnetic Biosorbents for Water Treatment. ENVIRONMENTAL CHEMISTRY FOR A SUSTAINABLE WORLD 2018. [DOI: 10.1007/978-3-319-92111-2_9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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65
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Yüksel S, Ziegler M, Goerke S, Huebner U, Weber K, Schaaf P, Meyer HG, Cialla-May D, Popp J. Hierarchically-Designed 3D Flower-Like Composite Nanostructures as an Ultrastable, Reproducible, and Sensitive SERS Substrate. ACS APPLIED MATERIALS & INTERFACES 2017; 9:38854-38862. [PMID: 29053250 DOI: 10.1021/acsami.7b14833] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Surface-enhanced Raman spectroscopy (SERS) is an attractive tool in the analytical sciences due to its high specificity and sensitivity. Because SERS-active substrates are only available as two-dimensional arrays, the fabrication of three-dimensional (3D) nanostructures allows for an increased number of hot spots in the focus volume, thus further amplifying the SERS signal. Although a great number of fabrication strategies for powerful SERS substrates exist, the generation of 3D nanostructures with high complexity and periodicity is still challenging. For this purpose, we report an easy fabrication technique for 3D nanostructures following a bottom-up preparation protocol. Enzymatically generated silver nanoparticles (EGNPs) are prepared, and the growth of hierarchically-designed 3D flower-like silica-silver composite nanostructures is induced by applying plasma-enhanced atomic layer deposition (PE-ALD) on the EGNPs. The morphology of these nanocomposites can be varied by changes in the PE-ALD cycle number, and a flower height of up to 10 μm is found. Moreover, the metallized (e.g., silver or gold) 3D nanostructures resulting from 135 PE-ALD cycles of silica creation provide highly reproducible SERS signals across the hydrophobic surface. Within this contribution, the morphological studies, optical properties, as well as the SERS response of these metallized silica-silver composite nanostructures applying vitamin B2 as a model analyte are introduced.
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Affiliation(s)
- Sezin Yüksel
- Leibniz Institute of Photonic Technology Jena (IPHT) , Albert-Einstein-Straße 9, 07745 Jena, Germany
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena , Helmholtzweg 4, 07743 Jena, Germany
- InfectoGnostics Forschungscampus Jena, Zentrum für Angewandte Forschung , Philosophenweg 7, 07743 Jena, Germany
| | - Mario Ziegler
- Leibniz Institute of Photonic Technology Jena (IPHT) , Albert-Einstein-Straße 9, 07745 Jena, Germany
- Department of Electrical Engineering and Information Technology, Institute of Materials Science and Engineering and Institute of Micro and Nanotechnologies MacroNano, TU Ilmenau , Gustav-Kirchhoff-Str. 5, 98693 Ilmenau, Germany
| | - Sebastian Goerke
- Leibniz Institute of Photonic Technology Jena (IPHT) , Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Uwe Huebner
- Leibniz Institute of Photonic Technology Jena (IPHT) , Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Karina Weber
- Leibniz Institute of Photonic Technology Jena (IPHT) , Albert-Einstein-Straße 9, 07745 Jena, Germany
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena , Helmholtzweg 4, 07743 Jena, Germany
- InfectoGnostics Forschungscampus Jena, Zentrum für Angewandte Forschung , Philosophenweg 7, 07743 Jena, Germany
| | - Peter Schaaf
- Department of Electrical Engineering and Information Technology, Institute of Materials Science and Engineering and Institute of Micro and Nanotechnologies MacroNano, TU Ilmenau , Gustav-Kirchhoff-Str. 5, 98693 Ilmenau, Germany
| | - Hans-Georg Meyer
- Leibniz Institute of Photonic Technology Jena (IPHT) , Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Dana Cialla-May
- Leibniz Institute of Photonic Technology Jena (IPHT) , Albert-Einstein-Straße 9, 07745 Jena, Germany
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena , Helmholtzweg 4, 07743 Jena, Germany
- InfectoGnostics Forschungscampus Jena, Zentrum für Angewandte Forschung , Philosophenweg 7, 07743 Jena, Germany
| | - Jürgen Popp
- Leibniz Institute of Photonic Technology Jena (IPHT) , Albert-Einstein-Straße 9, 07745 Jena, Germany
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena , Helmholtzweg 4, 07743 Jena, Germany
- InfectoGnostics Forschungscampus Jena, Zentrum für Angewandte Forschung , Philosophenweg 7, 07743 Jena, Germany
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66
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SERS Detection of Penicillin G Using Magnetite Decorated with Gold Nanoparticles. MAGNETOCHEMISTRY 2017. [DOI: 10.3390/magnetochemistry3040032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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67
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Chen S, Liu X, Zhou J, Zha L. Fabrication and SERS application of the thermoresponsive nanofibers with monodisperse Au@Ag bimetallic nanorods loaded shells. J Appl Polym Sci 2017. [DOI: 10.1002/app.45375] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Siyuan Chen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Materials Science and Engineering; Donghua University; Shanghai 201620 People's Republic of China
| | - Xiaoyun Liu
- Research Center for Analysis and Measurement; Donghua University; Shanghai 201620 People's Republic of China
| | - Jianfeng Zhou
- Research Center for Analysis and Measurement; Donghua University; Shanghai 201620 People's Republic of China
| | - Liusheng Zha
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Materials Science and Engineering; Donghua University; Shanghai 201620 People's Republic of China
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68
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Tobaldi DM, Hortigüela Gallo MJ, Otero-Irurueta G, Singh MK, Pullar RC, Seabra MP, Labrincha JA. Purely Visible-Light-Induced Photochromism in Ag-TiO 2 Nanoheterostructures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4890-4902. [PMID: 28463002 DOI: 10.1021/acs.langmuir.6b04474] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report titania nanoheterostructures decorated with silver, exhibiting tuneable photochromic properties for the first time when stimulated only by visible white light (domestic indoor lamp), with no UV wavelengths. Photochromic materials show reversible color changes under light exposure. However, all inorganic photochromic nanoparticles (NPs) require UV light to operate. Conventionally, multicolor photochromism in Ag-TiO2 films involves a change in color to brownish-gray during UV-light irradiation (i.e., reduction of Ag+ to Ag0) and a (re)bleaching (i.e., (re)oxidation of Ag0 to colorless Ag+) upon visible-light exposure. In this work, on the contrary, we demonstrate visible-light-induced photochromism (ranging from yellow to violet) of 1-10 mol % Ag-modified titania NPs using both spectroscopic and colorimetric CIEL*a*b* analyses. This is not a bleaching of the UV-induced color but a change in color itself under exposure to visible light, and it is shown to be a completely different mechanism-driven by the interfacial charge transfer of an electron from the valence band of TiO2 to that of the AgxO clusters that surround the titania-to the usual UV-triggered photochromism reported in titania-based materials. The quantity of Ag or irradiation time dictated the magnitude and degree of tuneability of the color change, from pale yellow to dark blue, with a rapid change visible only after a few seconds, and the intensity and red shift of surface plasmon resonance induced under visible light also increased. This effect was reversible after annealing in the dark at 100 °C/15 min. Photocatalytic activity under visible light was also assessed against the abatement of nitrogen oxide pollutants, for interior use, therefore showing the coexistence of photochromism and photocatalysis-both triggered by the same wavelength-in the same material, making it a multifunctional material. Moreover, we also demonstrate and explain why X-ray photoelectron spectroscopy is an unreliable technique with such materials.
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Affiliation(s)
- D M Tobaldi
- Department of Materials and Ceramic Engineering/CICECO-Aveiro Institute of Materials and ‡Center for Mechanical Technology and Automation-TEMA, Department of Mechanical Engineering, University of Aveiro , Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - M J Hortigüela Gallo
- Department of Materials and Ceramic Engineering/CICECO-Aveiro Institute of Materials and ‡Center for Mechanical Technology and Automation-TEMA, Department of Mechanical Engineering, University of Aveiro , Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - G Otero-Irurueta
- Department of Materials and Ceramic Engineering/CICECO-Aveiro Institute of Materials and ‡Center for Mechanical Technology and Automation-TEMA, Department of Mechanical Engineering, University of Aveiro , Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - M K Singh
- Department of Materials and Ceramic Engineering/CICECO-Aveiro Institute of Materials and ‡Center for Mechanical Technology and Automation-TEMA, Department of Mechanical Engineering, University of Aveiro , Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - R C Pullar
- Department of Materials and Ceramic Engineering/CICECO-Aveiro Institute of Materials and ‡Center for Mechanical Technology and Automation-TEMA, Department of Mechanical Engineering, University of Aveiro , Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - M P Seabra
- Department of Materials and Ceramic Engineering/CICECO-Aveiro Institute of Materials and ‡Center for Mechanical Technology and Automation-TEMA, Department of Mechanical Engineering, University of Aveiro , Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - J A Labrincha
- Department of Materials and Ceramic Engineering/CICECO-Aveiro Institute of Materials and ‡Center for Mechanical Technology and Automation-TEMA, Department of Mechanical Engineering, University of Aveiro , Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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69
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Yang JL, Xu J, Ren H, Sun L, Xu QC, Zhang H, Li JF, Tian ZQ. In situ SERS study of surface plasmon resonance enhanced photocatalytic reactions using bifunctional Au@CdS core-shell nanocomposites. NANOSCALE 2017; 9:6254-6258. [PMID: 28463374 DOI: 10.1039/c7nr00655a] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Surface plasmon resonance (SPR) has been utilized in many fields, such as surface-enhanced Raman spectroscopy (SERS) and solar energy conversion. Here we developed an Au@CdS core-shell nanostructure, a bifunctional nanoparticle, used as an efficient catalyst for SPR enhanced photocatalytic degradation, and as a substrate for in situ SERS detection of methylene blue (MB) and p-nitrophenol (pNTP). With integration of an Au nanoparticle into a CdS shell, the degradation process was significantly accelerated under 500 nm long-pass (λ > 500 nm) visible light irradiation, which was caused by the injection of hot electrons. Moreover, a highly uniform, monolayer film of Au@CdS nanoparticles (NPs) has been prepared and used as both a SERS substrate and catalyst. The decomposition of MB molecules and nitrogen coupling reaction of pNTP were observed during the 638 nm laser illumination. We demonstrate that a plasmonic core-semiconductor shell nanocomposite can be a promising material for photocatalysis and in situ SERS study.
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Affiliation(s)
- Jing-Liang Yang
- MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, College of Chemistry and Chemical Engineering, and Xiamen University, Xiamen 361005, China
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70
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Zhang Y, Zhao S, Zheng J, He L. Surface-enhanced Raman spectroscopy (SERS) combined techniques for high-performance detection and characterization. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2017.02.006] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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71
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Bekana D, Liu R, Amde M, Liu JF. Use of Polycrystalline Ice for Assembly of Large Area Au Nanoparticle Superstructures as SERS Substrates. ACS APPLIED MATERIALS & INTERFACES 2017; 9:513-520. [PMID: 27984854 DOI: 10.1021/acsami.6b15378] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
It is still a great challenge to develop simple and low-cost methods for preparation of surface-enhanced Raman scattering (SERS) substrates with high sensitivity and reproducibility. Taking advantage of the microstructure of polycrystalline ice, we developed a new method to assemble large area gold nanoparticle (AuNP) superstructures as SERS substrates without external templating and aggregating agent. The assembly was conducted by freezing AuNP colloid at -20 °C, which concentrated AuNPs in the ice veins and produced an AuNP superstructure upon thawing the ice. The AuNP superstructures exhibited high SERS activity with enhancement factors on the order of 7.63 × 107 owing to the high-density hot spots throughout the superstructures. The SERS activity was found to increase with particle size and aggregate size of AuNP superstructures. Besides, the substrates showed good uniformity and reproducibility with relative standard deviations of 11.9% and 12.4%, respectively. The substrates showed long-term stability, maintaining SERS activity over a period of five months without noticeable change in morphology of the superstructures. The substrates was further used for label-free detection of trace Thiram on apple fruit with high sensitivity down to the concentration of 0.28 ng/cm2, offering great potential to monitor Thiram levels in foodstuffs and environmental samples.
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Affiliation(s)
- Deribachew Bekana
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , P.O. Box 2871, Beijing 100085, China
- University of Chinese Academy of Sciences , Beijing 100049, China
| | - Rui Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , P.O. Box 2871, Beijing 100085, China
| | - Meseret Amde
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , P.O. Box 2871, Beijing 100085, China
- University of Chinese Academy of Sciences , Beijing 100049, China
| | - Jing-Fu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , P.O. Box 2871, Beijing 100085, China
- University of Chinese Academy of Sciences , Beijing 100049, China
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72
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73
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Zhang C, Yi P, Peng L, Lai X, Chen J, Huang M, Ni J. Continuous fabrication of nanostructure arrays for flexible surface enhanced Raman scattering substrate. Sci Rep 2017; 7:39814. [PMID: 28051175 PMCID: PMC5209699 DOI: 10.1038/srep39814] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 11/28/2016] [Indexed: 11/09/2022] Open
Abstract
Surface-enhanced Raman spectroscopy (SERS) has been a powerful tool for applications including single molecule detection, analytical chemistry, electrochemistry, medical diagnostics and bio-sensing. Especially, flexible SERS substrates are highly desirable for daily-life applications, such as real-time and in situ Raman detection of chemical and biological targets, which can be used onto irregular surfaces. However, it is still a major challenge to fabricate the flexible SERS substrate on large-area substrates using a facile and cost-effective technique. The roll-to-roll ultraviolet nanoimprint lithography (R2R UV-NIL) technique provides a solution for the continuous fabrication of flexible SERS substrate due to its high-speed, large-area, high-resolution and high-throughput. In this paper, we presented a facile and cost-effective method to fabricate flexible SERS substrate including the fabrication of polymer nanostructure arrays and the metallization of the polymer nanostructure arrays. The polymer nanostructure arrays were obtained by using R2R UV-NIL technique and anodic aluminum oxide (AAO) mold. The functional SERS substrates were then obtained with Au sputtering on the surface of the polymer nanostructure arrays. The obtained SERS substrates exhibit excellent SERS and flexibility performance. This research can provide a beneficial direction for the continuous production of the flexible SERS substrates.
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Affiliation(s)
- Chengpeng Zhang
- State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
| | - Peiyun Yi
- State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
| | - Linfa Peng
- State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
| | - Xinmin Lai
- State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
| | - Jie Chen
- Department of Instrument Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
| | - Meizhen Huang
- Department of Instrument Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
| | - Jun Ni
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109-2125, USA
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74
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Xue L, Gu HX, Yuan SQ, Li DW. Facile fabrication of silver nanoparticle-coated silica-C18 core–shell microspheres and their applications in SERS detection. RSC Adv 2017. [DOI: 10.1039/c7ra02098h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We present a one-step method to prepare silver nanoparticle (Ag NP) shell coated functional microspheres as a surface-enhanced Raman scattering (SERS) substrate.
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Affiliation(s)
- Lin Xue
- Research Center of Fluid Machinery Engineering and Technology
- Jiangsu University
- Zhenjiang
- P. R. China
- Shanghai Fire Research Institute of Ministry of Public Security
| | - Hai-Xin Gu
- Shanghai Fire Research Institute of Ministry of Public Security
- Shanghai 200438
- P. R. China
| | - Shou-Qi Yuan
- Research Center of Fluid Machinery Engineering and Technology
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Da-Wei Li
- Key Laboratory for Advanced Materials
- Shanghai Key Laboratory of Functional Materials Chemistry
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
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75
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Yang Q, Loos K. Janus nanoparticles inside polymeric materials: interfacial arrangement toward functional hybrid materials. Polym Chem 2017. [DOI: 10.1039/c6py01795a] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Recent advances and successes in interfacial behavior of Janus NPs at interfaces are summarized, with the hope to motivate additional efforts in the studies of Janus NPs in polymer matrix for the design of functional hybrid nanostructures and devices with engineered, desired and tailored properties for real-life applications.
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Affiliation(s)
- Qiuyan Yang
- Macromolecular Chemistry & New Polymeric Materials
- Zernike Institute for Advanced Materials
- University of Groningen
- 9747 AG Groningen
- The Netherlands
| | - Katja Loos
- Macromolecular Chemistry & New Polymeric Materials
- Zernike Institute for Advanced Materials
- University of Groningen
- 9747 AG Groningen
- The Netherlands
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76
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Hou C, Galvan DD, Meng G, Yu Q. Long-range surface plasmon resonance and surface-enhanced Raman scattering on X-shaped gold plasmonic nanohole arrays. Phys Chem Chem Phys 2017; 19:24126-24134. [DOI: 10.1039/c7cp04564f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
X-shaped gold plasmonic nanohole arrays embedded in refractive index-matched dielectric media are designed and optimized as a long-range SERS substrate.
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Affiliation(s)
- Chao Hou
- Department of Chemical Engineering
- University of Washington
- Seattle
- USA
- University of Science and Technology of China
| | | | - Guowen Meng
- Key Laboratory of Materials Physics
- and Anhui Key Laboratory of Nanomaterials and Nanotechnology
- Institute of Solid State Physics
- Chinese Academy of Sciences
- Hefei
| | - Qiuming Yu
- Department of Chemical Engineering
- University of Washington
- Seattle
- USA
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77
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Huang H, Yi G, Zu X, Zhong B, Lin W, Zhang M, Luo H. Tunable Electromagnetic Enhancement of Gold Nanoparticle Arrays. Aust J Chem 2017. [DOI: 10.1071/ch17056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In this paper, triblock copolymer polyisoprene-block-polystyrene-block-poly(2-vinylpyridine) (PI-b-PS-b-P2VP) micelles containing HAuCl4 were spin-coated on silicon wafers followed by calcination to form gold nanoparticle arrays. Subsequently the surface optical performances of poly(3-hexylthiophene) (P3HT)-coated Au nanoparticle arrays were investigated. The particle size and the interparticle distance of the gold nanoparticle arrays could be controlled by adjusting the molar ratio of HAuCl4 precursor to vinyl pyridine units in PI-b-PS-b-P2VP and the spin speed during spin-coating. The results demonstrated that Au nanoparticle arrays with large nanoparticle size were able to produce strong electromagnetic field enhancement. Furthermore, the ratio of average particle size to average interparticle distance increased with decreasing spin speed, resulting in strong electromagnetic field enhancement for metal-enhanced fluorescence (MEF) and surface-enhanced Raman scattering (SERS).
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78
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Yang Q, Loos K. Design and Fabrication of Janus Nanoparticles for Interfacial Distribution in Block Copolymers. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600451] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Qiuyan Yang
- Macromolecular Chemistry and New Polymeric Materials; Zernike Institute for Advanced Materials; University of Groningen; Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Katja Loos
- Macromolecular Chemistry and New Polymeric Materials; Zernike Institute for Advanced Materials; University of Groningen; Nijenborgh 4 9747 AG Groningen The Netherlands
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79
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Bapat G, Labade C, Chaudhari A, Zinjarde S. Silica nanoparticle based techniques for extraction, detection, and degradation of pesticides. Adv Colloid Interface Sci 2016; 237:1-14. [PMID: 27780560 DOI: 10.1016/j.cis.2016.06.001] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 05/31/2016] [Accepted: 06/01/2016] [Indexed: 12/07/2022]
Abstract
Silica nanoparticles (SiNPs) find applications in the fields of drug delivery, catalysis, immobilization and sensing. Their synthesis can be mediated in a facile manner and they display broad range compatibility and stability. Their existence in the form of spheres, wires and sheets renders them suitable for varied purposes. This review summarizes the use of silica nanostructures in developing techniques for extraction, detection and degradation of pesticides. Silica nanostructures on account of their sorbent properties, porous nature and increased surface area allow effective extraction of pesticides. They can be modified (with ionic liquids, silanes or amines), coated with molecularly imprinted polymers or magnetized to improve the extraction of pesticides. Moreover, they can be altered to increase their sensitivity and stability. In addition to the analysis of pesticides by sophisticated techniques such as High Performance Liquid Chromatography or Gas chromatography, silica nanoparticles related simple detection methods are also proving to be effective. Electrochemical and optical detection based on enzymes (acetylcholinesterase and organophosphate hydrolase) or antibodies have been developed. Pesticide sensors dependent on fluorescence, chemiluminescence or Surface Enhanced Raman Spectroscopic responses are also SiNP based. Moreover, degradative enzymes (organophosphate hydrolases, carboxyesterases and laccases) and bacterial cells that produce recombinant enzymes have been immobilized on SiNPs for mediating pesticide degradation. After immobilization, these systems show increased stability and improved degradation. SiNP are significant in developing systems for effective extraction, detection and degradation of pesticides. SiNPs on account of their chemically inert nature and amenability to surface modifications makes them popular tools for fabricating devices for 'on-site' applications.
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80
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Bano S, Nazir S, Nazir A, Munir S, Mahmood T, Afzal M, Ansari FL, Mazhar K. Microwave-assisted green synthesis of superparamagnetic nanoparticles using fruit peel extracts: surface engineering, T 2 relaxometry, and photodynamic treatment potential. Int J Nanomedicine 2016; 11:3833-48. [PMID: 27570452 PMCID: PMC4986972 DOI: 10.2147/ijn.s106553] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Superparamagnetic iron oxide nanoparticles (SPIONs) have the potential to be used as multimodal imaging and cancer therapy agents due to their excellent magnetism and ability to generate reactive oxygen species when exposed to light. We report the synthesis of highly biocompatible SPIONs through a facile green approach using fruit peel extracts as the biogenic reductant. This green synthesis protocol involves the stabilization of SPIONs through coordination of different phytochemicals. The SPIONs were functionalized with polyethylene glycol (PEG)-6000 and succinic acid and were extensively characterized by X-ray diffraction analysis, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, atomic force microscopy, Rutherford backscattering spectrometry, diffused reflectance spectroscopy, fluorescence emission, Fourier-transform infrared spectroscopy, ultraviolet-visible spectroscopy, and magnetization analysis. The developed SPIONs were found to be stable, almost spherical with a size range of 17-25 nm. They exhibited excellent water dispersibility, colloidal stability, and relatively high R 2 relaxivity (225 mM(-1) s(-1)). Cell viability assay data revealed that PEGylation or carboxylation appears to significantly shield the surface of the particles but does not lead to improved cytocompatibility. A highly significant increase of reactive oxygen species in light-exposed samples was found to play an important role in the photokilling of human cervical epithelial malignant carcinoma (HeLa) cells. The bio-SPIONs developed are highly favorable for various biomedical applications without risking interference from potentially toxic reagents.
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Affiliation(s)
- Shazia Bano
- Department of Physics, The Islamia University of Bahawalpur, Bahawalpur
- Nanosciences and Technology Department, National Centre for Physics
- Institute of Biomedical and Genetic Engineering (IBGE)
| | - Samina Nazir
- Nanosciences and Technology Department, National Centre for Physics
| | - Alia Nazir
- Department of Physics, The Islamia University of Bahawalpur, Bahawalpur
| | - Saeeda Munir
- Institute of Biomedical and Genetic Engineering (IBGE)
| | - Tariq Mahmood
- Nanosciences and Technology Department, National Centre for Physics
| | - Muhammad Afzal
- Department of Physics, The Islamia University of Bahawalpur, Bahawalpur
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81
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Tan X, Melkersson J, Wu S, Wang L, Zhang J. Noble-Metal-Free Materials for Surface-Enhanced Raman Spectroscopy Detection. Chemphyschem 2016; 17:2630-9. [DOI: 10.1002/cphc.201600286] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Xianjun Tan
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; Meilong Road 130 200237 Shanghai China
| | - Jenny Melkersson
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; Meilong Road 130 200237 Shanghai China
| | - Shiqun Wu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; Meilong Road 130 200237 Shanghai China
| | - Lingzhi Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; Meilong Road 130 200237 Shanghai China
| | - Jinlong Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; East China University of Science and Technology; Meilong Road 130 200237 Shanghai China
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82
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Prakash J, Harris R, Swart H. Embedded plasmonic nanostructures: synthesis, fundamental aspects and their surface enhanced Raman scattering applications. INT REV PHYS CHEM 2016. [DOI: 10.1080/0144235x.2016.1187006] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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83
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Convertino A, Mussi V, Maiolo L. Disordered array of Au covered Silicon nanowires for SERS biosensing combined with electrochemical detection. Sci Rep 2016; 6:25099. [PMID: 27112197 PMCID: PMC4844982 DOI: 10.1038/srep25099] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 04/11/2016] [Indexed: 11/09/2022] Open
Abstract
We report on highly disordered array of Au coated silicon nanowires (Au/SiNWs) as surface enhanced Raman scattering (SERS) probe combined with electrochemical detection for biosensing applications. SiNWs, few microns long, were grown by plasma enhanced chemical vapor deposition on common microscope slides and covered by Au evaporated film, 150 nm thick. The capability of the resulting composite structure to act as SERS biosensor was studied via the biotin-avidin interaction: the Raman signal obtained from this structure allowed to follow each surface modification step as well as to detect efficiently avidin molecules over a broad range of concentrations from micromolar down to the nanomolar values. The metallic coverage wrapping SiNWs was exploited also to obtain a dual detection of the same bioanalyte by electrochemical impedance spectroscopy (EIS). Indeed, the SERS signal and impedance modifications induced by the biomolecule perturbations on the metalized surface of the NWs were monitored on the very same three-electrode device with the Au/SiNWs acting as both working electrode and SERS probe.
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Affiliation(s)
- Annalisa Convertino
- Institute for Microelectronics and Microsystems, C.N.R., via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - Valentina Mussi
- Institute for Complex Systems, C.N.R., via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - Luca Maiolo
- Institute for Microelectronics and Microsystems, C.N.R., via del Fosso del Cavaliere 100, 00133 Rome, Italy
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84
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Khabibullin A, Bhangaonkar K, Mahoney C, Lu Z, Schmitt M, Sekizkardes AK, Bockstaller MR, Matyjaszewski K. Grafting PMMA Brushes from α-Alumina Nanoparticles via SI-ATRP. ACS APPLIED MATERIALS & INTERFACES 2016; 8:5458-5465. [PMID: 26901494 DOI: 10.1021/acsami.5b12311] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Alumina nanoparticles are widely used as nanofillers for polymer nanocomposites. Among several different polymorphs of alumina, α-alumina has the most desirable combination of physical properties. Hence, the attachment of polymer chains to α-alumina to enhance compatibility in polymeric matrixes is an important goal. However, the chemical inertness and low concentration of surface hydroxyl groups have rendered polymer modification of α-alumina a long-standing challenge. Herein, we report that activation of α-alumina in concentrated or molten NaOH as well as in molten K2S2O7 increased polymer graft density up to 50%, thereby facilitating the synthesis of α-alumina brush particles with uniform grafting density of 0.05 nm(-2) that are readily miscible or dispersible in organic solvents or in chemically compatible polymeric hosts.
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Affiliation(s)
- Amir Khabibullin
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Ave, Pittsburgh, Pennsylvania 15213, United States
| | - Karan Bhangaonkar
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Ave, Pittsburgh, Pennsylvania 15213, United States
| | - Clare Mahoney
- Department of Materials Science and Engineering, Carnegie Mellon University , 5000 Forbes Avenue, Pittsburgh, Pennsylvania, 15213, United States
| | - Zhao Lu
- Department of Materials Science and Engineering, Carnegie Mellon University , 5000 Forbes Avenue, Pittsburgh, Pennsylvania, 15213, United States
| | - Michael Schmitt
- Department of Materials Science and Engineering, Carnegie Mellon University , 5000 Forbes Avenue, Pittsburgh, Pennsylvania, 15213, United States
| | - Ali Kemal Sekizkardes
- National Energy and Technology Lab (NETL), U.S. Department of Energy , 626 Cochrans Mill Rd, Pittsburgh, Pennsylvania 15129, United States
| | - Michael R Bockstaller
- Department of Materials Science and Engineering, Carnegie Mellon University , 5000 Forbes Avenue, Pittsburgh, Pennsylvania, 15213, United States
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Ave, Pittsburgh, Pennsylvania 15213, United States
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85
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Couto C, Vitorino R, Daniel-da-Silva AL. Gold nanoparticles and bioconjugation: a pathway for proteomic applications. Crit Rev Biotechnol 2016; 37:238-250. [DOI: 10.3109/07388551.2016.1141392] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Cláudia Couto
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal,
| | - Rui Vitorino
- Mass Spectrometry Center, Organic Chemistry, Natural and Agro-Food Products Research Unit (QOPNA), Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal,
- Department of Medical Sciences, iBiMED - Institute for Biomedicine, University of Aveiro, 3810-193 Aveiro, Portugal and
- Department of Physiology and Cardiothoracic Surgery, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Ana L. Daniel-da-Silva
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal,
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