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Xu Z, Luan L, Li P, Dong K. Extralong hot-spots sensor for SERS sensitive detection of phthalate plasticizers in biological tear and serum fluids. Anal Bioanal Chem 2024; 416:4301-4313. [PMID: 38852120 DOI: 10.1007/s00216-024-05366-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 05/24/2024] [Accepted: 05/27/2024] [Indexed: 06/10/2024]
Abstract
Phthalate plasticizers (PAEs) illegally used in food pose a great threat to human health. A new and efficient sensing platform for the sensitive detection of the PAE residues in biological fluids needs to be designed and developed. Here, we report a simple and reliable surface-enhanced Raman spectroscopy (SERS) active platform with extralong hot spots of Au nanobipyramids@Ag nanorods (Au NBPs@Ag NRs) for the rapid and sensitive detection of PAEs in biological fluids. To achieve high activity, Au NBPs@Ag NRs with different shell lengths were fabricated by controlling the synthesis conditions, and the corresponding SERS properties were investigated by using crystal violet (CryV) and butyl benzyl phthalate (BBP). The experimental results showed that a longer shell length correlated to greater Raman activity, which was confirmed by finite-difference time-domain (FDTD) electromagnetic simulation. More importantly, the extralong hot spots of the Au NBPs@Ag NR SERS-active substrate showed excellent homogeneity and reproducibility for the CryV probe molecules (6.21%), and the detection limit was 10-9 M for both BBP and diethylhexyl phthalate (DEHP). Furthermore, through the standard addition method, an extralong hot spots SERS substrate could achieve highly sensitive detection of BBP and DEHP in serum and tears fluids, and the detection limit was as low as 3.52 × 10-8 M and 2.82 × 10-8 M. Therefore, the Au NBPs@Ag NR substrate with an extraordinarily long surface is efficient and versatile, and can potentially be used for high-efficiency sensing analysis in complex biological fluids.
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Affiliation(s)
- Ziming Xu
- Department of Ophthalmology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, P.R. China
| | - Longlong Luan
- School of Chemistry and Chemical Engineering, Hefei University of Technology, HefeiAnhui, 230009, China
| | - Pan Li
- Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, Anhui, China.
| | - Kai Dong
- Department of Ophthalmology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, P.R. China.
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2
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Ni Y, Kan C, Xu J. Optimized plasmonic performances and derivate applications of Au nanobipyramids. Phys Chem Chem Phys 2022; 24:21522-21537. [PMID: 36082804 DOI: 10.1039/d2cp02811e] [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
Gold nanobipyramids (AuBPs) with narrow size distribution and high monodispersity have driven intensive attention because they display more advantageous plasmonic properties than gold nanorods (AuNRs). Applications of AuBPs based on tunable plasmonic properties and enhanced electromagnetic fields are being widely investigated in recent years. In this article, we focused on the preparation of well-defined AuBPs using the seed-mediated method, the plasmonic properties, and the exploration of AuBP-supported derivatives. The synergetic contributions of penta-twinned and appropriate growth environment could produce high-purity AuBPs. Systematic comparisons of plasmonic properties between AuBPs and AuNRs are illustrated. In addition, the well-defined AuBPs can be used as a template to synthesize multi-metallic nanostructures. The development of the epitaxial growth based on the AuBPs and corresponding applications are introduced. This study will provide a guide for the fabrication of composite nanostructures and advance their plasmonic applications.
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Affiliation(s)
- Yuan Ni
- College of Science, Jinling Institute of Technology, Nanjing 210016, China.
| | - Caixia Kan
- College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
| | - Juan Xu
- College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
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3
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Optimizing and Quantifying Gold Nanospheres Based on LSPR Label-Free Biosensor for Dengue Diagnosis. Polymers (Basel) 2022; 14:polym14081592. [PMID: 35458342 PMCID: PMC9031946 DOI: 10.3390/polym14081592] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 12/10/2022] Open
Abstract
The localized surface plasmon resonance (LSPR) due to light-particle interaction and its dependence on the surrounding medium have been widely manipulated for sensing applications. The sensing efficiency is governed by the refractive index-based sensitivity (ηRIS) and the full width half maximum (FWHM) of the LSPR spectra. Thereby, a sensor with high precision must possess both requisites: an effective ηRIS and a narrow FWHM of plasmon spectrum. Moreover, complex nanostructures are used for molecular sensing applications due to their good ηRIS values but without considering the wide-band nature of the LSPR spectrum, which decreases the detection limit of the plasmonic sensor. In this article, a novel, facile and label-free solution-based LSPR immunosensor was elaborated based upon LSPR features such as extinction spectrum and localized field enhancement. We used a 3D full-wave field analysis to evaluate the optical properties and to optimize the appropriate size of spherical-shaped gold nanoparticles (Au NPs). We found a change in Au NPs' radius from 5 nm to 50 nm, and an increase in spectral resonance peak depicted as a red-shift from 520 nm to 552 nm. Using this fact, important parameters that can be attributed to the LSPR sensor performance, namely the molecular sensitivity, FWHM, ηRIS, and figure of merit (FoM), were evaluated. Moreover, computational simulations were used to assess the optimized size (radius = 30 nm) of Au NPs with high FoM (2.3) and sharp FWHM (44 nm). On the evaluation of the platform as a label-free molecular sensor, Campbell's model was performed, indicating an effective peak shift in the adsorption of the dielectric layer around the Au NP surface. For practical realization, we present an LSPR sensor platform for the identification of dengue NS1 antigens. The results present the system's ability to identify dengue NS1 antigen concentrations with the limit of quantification measured to be 0.07 μg/mL (1.50 nM), evidence that the optimization approach used for the solution-based LSPR sensor provides a new paradigm for engineering immunosensor platforms.
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Saqezi AS, Kermanian M, Ramazani A, Sadighian S. Synthesis of Graphene Oxide/Iron Oxide/Au Nanocomposite for Quercetin Delivery. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02259-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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5
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Nouneh K, Khaaissa Y, Talbi A, Taghzouti O, Belahmar A, El Mabrouk K, Zekriti M, El Mouakibi A, Oyama M. Improving Seeding Growth Method for Preparing Densely Attached Spherical Gold Nanoparticles on Solid Substrate. INTERNATIONAL JOURNAL OF NANOSCIENCE 2022. [DOI: 10.1142/s0219581x21500563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In this paper, a modified seed-mediated growth approach to produce gold nanoparticles through HAuCl4 chemical reduction in water fabricated by growth process on indium tin oxide (ITO) was proposed. Particular attention was devoted to exploring the seeding and growth number cycle process in the formation of Au nanoparticles on the ITO surface. In agreement with the assumed analytical model, we have found that the absorbance maximum intensity [Formula: see text] depends substantially on the metal nanoparticles’ sizes, shape and density on the ITO surface. The deposited nanoparticles’ synthesized parameters were evaluated by the surface images obtained using field emission scanning electron microscopy (FE-SEM), UV-Vis spectroscopy and electrochemical measurements. The results show that the electrochemical responses of the as-prepared sample were significantly improved, in particular for the 2-cycle seeded particles followed by one-cycle growth.
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Affiliation(s)
- K. Nouneh
- Laboratory of Materials Physics & Subatomics, Department of Physics, Faculty of Science, Ibn Tofail University, BP. 242 14000, Kenitra, Morocco
| | - Y. Khaaissa
- Laboratory of Materials Physics & Subatomics, Department of Physics, Faculty of Science, Ibn Tofail University, BP. 242 14000, Kenitra, Morocco
| | - A. Talbi
- Laboratory of Materials Physics & Subatomics, Department of Physics, Faculty of Science, Ibn Tofail University, BP. 242 14000, Kenitra, Morocco
| | - O. K. Taghzouti
- Laboratory of Materials Physics & Subatomics, Department of Physics, Faculty of Science, Ibn Tofail University, BP. 242 14000, Kenitra, Morocco
- Euromed Research Center, Euromed Engineering Faculty, Euromed University of Fes, Eco-Campus, Campus UEMF BP51, Fes, Morocco
| | - A. Belahmar
- Laboratory of Materials Physics & Subatomics, Department of Physics, Faculty of Science, Ibn Tofail University, BP. 242 14000, Kenitra, Morocco
| | - K. El Mabrouk
- Euromed Research Center, Euromed Engineering Faculty, Euromed University of Fes, Eco-Campus, Campus UEMF BP51, Fes, Morocco
| | - M. Zekriti
- Euromed Research Center, Euromed Engineering Faculty, Euromed University of Fes, Eco-Campus, Campus UEMF BP51, Fes, Morocco
| | | | - M. Oyama
- Nanomaterials Chemistry Laboratory, Department of Materials Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8520, Japan
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How to Use Localized Surface Plasmon for Monitoring the Adsorption of Thiol Molecules on Gold Nanoparticles? NANOMATERIALS 2022; 12:nano12020292. [PMID: 35055309 PMCID: PMC8778005 DOI: 10.3390/nano12020292] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/08/2022] [Accepted: 01/10/2022] [Indexed: 02/06/2023]
Abstract
The functionalization of spherical gold nanoparticles (AuNPs) in solution with thiol molecules is essential for further developing their applications. AuNPs exhibit a clear localized surface plasmon resonance (LSPR) at 520 nm in water for 20 nm size nanoparticles, which is extremely sensitive to the local surface chemistry. In this study, we revisit the use of UV-visible spectroscopy for monitoring the LSPR peak and investigate the progressive reaction of thiol molecules on 22 nm gold nanoparticles. FTIR spectroscopy and TEM are used for confirming the nature of ligands and the nanoparticle diameter. Two thiols are studied: 11-mercaptoundecanoic acid (MUDA) and 16-mercaptohexadecanoic acid (MHDA). Surface saturation is detected after adding 20 nmol of thiols into 1.3 × 10−3 nmol of AuNPs, corresponding approximately to 15,000 molecules per AuNPs (which is equivalent to 10.0 molecules per nm2). Saturation corresponds to an LSPR shift of 2.7 nm and 3.9 nm for MUDA and MHDA, respectively. This LSPR shift is analyzed with an easy-to-use analytical model that accurately predicts the wavelength shift. The case of dodecanehtiol (DDT) where the LSPR shift is 15.6 nm is also quickly commented. An insight into the kinetics of the functionalization is obtained by monitoring the reaction for a low thiol concentration, and the reaction appears to be completed in less than one hour.
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Vestri A, Rippa M, Marchesano V, Sagnelli D, Margheri G, Zhou J, Petti L. LSPR immuno-sensing based on iso-Y nanopillars for highly sensitive and specific imidacloprid detection. J Mater Chem B 2021; 9:9153-9161. [PMID: 34694310 DOI: 10.1039/d1tb01344k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Imidacloprid is the most widely used insecticide in agriculture and its intensive use over the last 30 years has caused a global concern due to its potentially toxic effects on the ecosystem. Considering the recent scientific interest in novel simple methods for imidacloprid analysis, we propose a label-free sensitive and specific localised surface plasmon resonance system for the detection of the insecticide based on 2D nanostructured metasurfaces with highly performing plasmonic properties. The specificity of the sensor proposed was achieved by covalent bio-functionalization of the metasurface using a smart and easy one-step procedure mediated by carbon disulphide. The biosensor produced was tested using a set of imidacloprid standard solutions showing a competitive limit of detection, lower than 1 ng mL-1. Our novel nanosensing configuration represents a valid and reliable solution to realize low-cost portable POC tests as an alternative to the laborious and expensive methods traditionally used for insecticide detection.
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Affiliation(s)
- Ambra Vestri
- Institute of Applied Sciences and Intelligent Systems "E. Caianiello" of CNR, Pozzuoli 80072, Italy.
| | - Massimo Rippa
- Institute of Applied Sciences and Intelligent Systems "E. Caianiello" of CNR, Pozzuoli 80072, Italy.
| | - Valentina Marchesano
- Institute of Applied Sciences and Intelligent Systems "E. Caianiello" of CNR, Pozzuoli 80072, Italy.
| | - Domenico Sagnelli
- Institute of Applied Sciences and Intelligent Systems "E. Caianiello" of CNR, Pozzuoli 80072, Italy.
| | | | - Jun Zhou
- Institute of Photonics, Faculty of Science, Ningbo University, Ningbo, People's Republic of China
| | - Lucia Petti
- Institute of Applied Sciences and Intelligent Systems "E. Caianiello" of CNR, Pozzuoli 80072, Italy.
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8
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Linic S, Chavez S, Elias R. Flow and extraction of energy and charge carriers in hybrid plasmonic nanostructures. NATURE MATERIALS 2021; 20:916-924. [PMID: 33398116 DOI: 10.1038/s41563-020-00858-4] [Citation(s) in RCA: 98] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 10/16/2020] [Indexed: 05/21/2023]
Abstract
Strong interactions of electromagnetic fields with plasmonic nanomaterials have been exploited in various applications. These applications have centred on plasmon-enhanced scattering rates in nearby molecules or plasmon-induced heating. A question that has emerged recently is whether it is possible to use plasmonic nanostructures in a range of hot electron (hole) applications, including photocatalysis, photovoltaics and photodetection. These applications require coupling of a plasmonic component, which amplifies the interaction of light with the material, to an attached non-plasmonic component that extracts this energy in the form of electronic excitations to perform a function. In this Perspective, we discuss recent work in the emerging field of hybrid plasmonics. We focus on fundamental questions related to the nanoscopic flow of energy and excited charge carriers in these multicomponent materials. We also address critical misconceptions, challenges and opportunities that require more attention.
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9
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Preparation and properties of Ag plasmonic structures on garnet substrates. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-020-01624-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Gao C, Yu L, Ma L, Lu X, Wu S, Song P, Xia L. The role of benzene rings in monitoring amino acids by SERS. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Xie L, Lu J, Liu T, Chen G, Liu G, Ren B, Tian Z. Key Role of Direct Adsorption on SERS Sensitivity: Synergistic Effect among Target, Aggregating Agent, and Surface with Au or Ag Colloid as Surface-Enhanced Raman Spectroscopy Substrate. J Phys Chem Lett 2020; 11:1022-1029. [PMID: 31931563 DOI: 10.1021/acs.jpclett.9b03724] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
It is widely accepted that the sensitivity of surface-enhanced Raman spectroscopy (SERS) is mainly manipulated by the electromagnetic enhancement mechanism (EM). Herein, we determined that the direct adsorption of the target on the SERS active surface is vital as well, through the systematic investigation of the SERS behavior of three positively charged molecules on negatively charged gold (Au) or silver nanoparticles (Ag NPs). Facilitated by the synergistic effect among the molecule, the surface, and the specific adsorbed halide ions (Cl-, Br-, and I-), high SERS sensitivity for trace target was realized, which was mainly from the directly adsorbed molecules. Noteworthy, little contribution from the nondirectly adsorbed molecules was discernible, although the EM enhancement was at the same level for these two surface species dwelling within a distance significantly less than 1 nm from the surface. Further, the related strategy for trace detection sheds light on how to realize sensitive SERS detection of new targets.
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Affiliation(s)
- Lifang Xie
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology , Xiamen University , Xiamen 361005 , P. R. China
- Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology , Xiamen University , Xiamen 361102 , China
| | - Jianglong Lu
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology , Xiamen University , Xiamen 361005 , P. R. China
- Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology , Xiamen University , Xiamen 361102 , China
| | - Tao Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - Ganyu Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - Guokun Liu
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology , Xiamen University , Xiamen 361005 , P. R. China
- Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology , Xiamen University , Xiamen 361102 , China
| | - Bin Ren
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - Zhongqun Tian
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
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12
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Au-WO 3 Nanocomposite Coatings for Localized Surface Plasmon Resonance Sensing. MATERIALS 2020; 13:ma13010246. [PMID: 31935920 PMCID: PMC6981964 DOI: 10.3390/ma13010246] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 01/01/2020] [Accepted: 01/03/2020] [Indexed: 11/17/2022]
Abstract
Localized surface plasmon resonance (LSPR) gas sensors are gaining increasing importance due to their unique tuneable functional properties. Au-WO3−x nanocomposite coatings, in particular, can be outstandingly sensitive to many different gases. However, a proper understanding of their optical properties and the way in which those properties are correlated to their structure/microstructure, is still needed. In this work, Au-WO3 nanocomposite coatings, with Au contents between 0–11 atomic percent, were grown using reactive magnetron co-sputtering technique and were characterized concerning their optical response. The precipitation of Au nanoparticles in the oxide matrix was promoted through thermal annealing treatments until 500 °C. Along with the Au nanoparticles’ morphological changes, the annealing treatments stimulated the crystallization of WO3, together with the appearance of oxygen-deficient WO3−x phases. Through theoretical simulations, we have related the LSPR effect with the different structural and morphological variations (namely, size and distribution of the nanoparticles and their local environment), which were a function of the Au content and annealing temperature. Our results suggest that local voids were present in the vicinity of the Au nanoparticles, for all temperature range, and that they should be present in a wide variety of Au-WO3 nanocomposites. A theoretical study concerning the refractive index sensitivity was carried out in order to predict the optimal coating design parameters for gas sensing experiments.
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13
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Plasmonic-based platforms for diagnosis of infectious diseases at the point-of-care. Biotechnol Adv 2019; 37:107440. [PMID: 31476421 DOI: 10.1016/j.biotechadv.2019.107440] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 08/21/2019] [Indexed: 12/17/2022]
Abstract
Infectious diseases such as HIV-1/AIDS, tuberculosis (TB), hepatitis B (HBV), and malaria still exert a tremendous health burden on the developing world, requiring rapid, simple and inexpensive diagnostics for on-site diagnosis and treatment monitoring. However, traditional diagnostic methods such as nucleic acid tests (NATs) and enzyme linked immunosorbent assays (ELISA) cannot be readily implemented in point-of-care (POC) settings. Recently, plasmonic-based biosensors have emerged, offering an attractive solution to manage infectious diseases in the developing world since they can achieve rapid, real-time and label-free detection of various pathogenic biomarkers. Via the principle of plasmonic-based optical detection, a variety of biosensing technologies such as surface plasmon resonance (SPR), localized surface plasmon resonance (LSPR), colorimetric plasmonic assays, and surface enhanced Raman spectroscopy (SERS) have emerged for early diagnosis of HIV-1, TB, HBV and malaria. Similarly, plasmonic-based colorimetric assays have also been developed with the capability of multiplexing and cellphone integration, which is well suited for POC testing in the developing world. Herein, we present a comprehensive review on recent advances in surface chemistry, substrate fabrication, and microfluidic integration for the development of plasmonic-based biosensors, aiming at rapid management of infectious diseases at the POC, and thus improving global health.
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Pelivanov I, Petrova E, Yoon SJ, Qian Z, Guye K, O'Donnell M. Molecular fingerprinting of nanoparticles in complex media with non-contact photoacoustics: beyond the light scattering limit. Sci Rep 2018; 8:14425. [PMID: 30258194 PMCID: PMC6158233 DOI: 10.1038/s41598-018-32580-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 09/06/2018] [Indexed: 11/09/2022] Open
Abstract
Optical instruments can probe physical systems even to the level of individual molecules. In particular, every molecule, solution, and structure such as a living cell has a unique absorption spectrum representing a molecular fingerprint. This spectrum can help identify a particular molecule from others or quantify its concentration; however, scattering limits molecular fingerprinting within a complex compound and must be overcome. Here, we present a new, non-contact photoacoustic (PA)-based method that can almost completely remove the influence of background light scattering on absorption measurements in heterogeneous highly scattering solutions and, furthermore, separate the intrinsic absorption of nanoscale objects from their scattering. In particular, we measure pure absorption spectra for solutions of gold nanorods (GNRs) as an example of a plasmonic agent and show that these spectra differ from the extinction measured with conventional UV-VIS spectrophotometry. Finally, we show how the original GNR absorption changes when nanoparticles are internalized by cells.
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Affiliation(s)
- Ivan Pelivanov
- Department of Bioengineering, University of Washington, Seattle, WA, 98195, USA.
| | - Elena Petrova
- Department of Bioengineering, University of Washington, Seattle, WA, 98195, USA
| | - Soon Joon Yoon
- Department of Bioengineering, University of Washington, Seattle, WA, 98195, USA
| | - Zhaoxia Qian
- Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Kathryn Guye
- Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Matthew O'Donnell
- Department of Bioengineering, University of Washington, Seattle, WA, 98195, USA
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15
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Computational Study of Sensitivity Enhancement in Surface Plasmon Resonance (SPR) Biosensors by Using the Inclusion of the Core-Shell for Biomaterial Sample Detection. BIOSENSORS-BASEL 2018; 8:bios8030075. [PMID: 30087280 PMCID: PMC6164099 DOI: 10.3390/bios8030075] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 06/26/2018] [Accepted: 08/01/2018] [Indexed: 12/15/2022]
Abstract
A theoretical analysis and computational study of biomaterial sample detection with surface plasmon resonance (SPR) phenomenon spectroscopy are presented in this work with the objective of achieving more sensitive detection. In this paper, a Fe₃O₄@Au core-shell, a nanocomposite spherical nanoparticle consisting of a spherical Fe₃O₄ core covered by an Au shell, was used as an active material for biomaterial sample detection, such as for blood plasma, haemoglobin (Hb) cytoplasm and lecithin, with a wavelength of 632.8 nm. We present the detection amplification technique through an attenuated total reflection (ATR) spectrum in the Kretschmann configuration. The system consists of a four-layer material, i.e., prism/Ag/Fe₃O₄@Au + biomaterial sample/air. The effective permittivity determination of the core-shell nanoparticle (Fe₃O₄@Au) and the composite (Fe₃O₄@Au + biomaterial sample) was done by applying the effective medium theory approximation, and the calculation of the reflectivity was carried out by varying the size of the core-shell, volume fraction and biomaterial sample. In this model, the refractive index (RI) of the BK7 prism is 1.51; the RI of the Ag thin film is 0.13455 + 3.98651i with a thickness of 40 nm; and the RI of the composite is varied depending on the size of the nanoparticle core-shell and the RI of the biomaterial samples. Our results show that by varying the sizes of the core-shell, volume fraction and the RIs of the biomaterial samples, the dip in the reflectivity (ATR) spectrum is shifted to the larger angle of incident light, and the addition of a core-shell in the conventional SPR-based biosensor leads to the enhancement of the SPR biosensor sensitivity. For a core-shell with a radius a = 2.5 nm, the sensitivity increased by 10% for blood plasma detection, 47.72% for Hb cytoplasm detection and by 22.08% for lecithin detection compared to the sensitivity of the conventional SPR-based biosensor without core-shell addition.
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16
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Bimetallic Nanoparticles: Enhanced Magnetic and Optical Properties for Emerging Biological Applications. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8071106] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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17
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Demirdjian B, Bedu F, Ranguis A, Ozerov I, Henry CR. Water Adsorption by a Sensitive Calibrated Gold Plasmonic Nanosensor. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:5381-5385. [PMID: 29678113 DOI: 10.1021/acs.langmuir.8b00040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We demonstrate in this work that using nanoplasmonic sensing it is possible to follow the adsorption/desorption of water molecules on gold nanodisks nanofabricated by electron beam lithography. This quantitative method is highly sensitive allowing the detection of a few hundredths of adsorbed monolayer. Disk parameters (height, diameter, and interdisk distance) have been optimized after finite-difference time-domain (FDTD) simulations in order to obtain the best localized surface plasmon resonance (LSPR) signal-to-noise ratio. Finally, we have precisely measured the adsorption kinetics of water on gold as a function of the relative humidity of the surrounding medium.
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Affiliation(s)
| | - Frédéric Bedu
- Aix Marseille Univ, CNRS, CINAM , Marseille , France
| | - Alain Ranguis
- Aix Marseille Univ, CNRS, CINAM , Marseille , France
| | - Igor Ozerov
- Aix Marseille Univ, CNRS, CINAM , Marseille , France
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Luo K, Jung S, Park KH, Kim YR. Microbial Biosynthesis of Silver Nanoparticles in Different Culture Media. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:957-962. [PMID: 29323901 DOI: 10.1021/acs.jafc.7b05092] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Microbial biosynthesis of metal nanoparticles has been extensively studied for the applications in biomedical sciences and engineering. However, the mechanism for their synthesis through microorganism is not completely understood. In this study, several culture media were investigated for their roles in the microbial biosynthesis of silver nanoparticles (AgNPs). The size and morphology of the synthesized AgNPs were analyzed by UV-vis spectroscopy, Fourier-transform-infrared (FT-IR), transmission electron microscopy (TEM), and dynamic light scattering (DLS). The results demonstrated that nutrient broth (NB) and Mueller-Hinton broth (MHB) among tested media effectively reduced silver ions to form AgNPs with different particle size and shape. Although the involved microorganism enhanced the reduction of silver ions, the size and shape of the particles were shown to mainly depend on the culture media. Our findings suggest that the growth media of bacterial culture play an important role in the synthesis of metallic nanoparticles with regard to their size and shape. We believe our findings would provide useful information for further exploration of microbial biosynthesis of AgNPs and their biomedical applications.
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Affiliation(s)
- Ke Luo
- Graduate School of Biotechnology and Department of Food Science and Biotechnology, College of Life Sciences, Kyung Hee University , Yongin 17104, Korea
| | - Samuel Jung
- Graduate School of Biotechnology and Department of Food Science and Biotechnology, College of Life Sciences, Kyung Hee University , Yongin 17104, Korea
| | - Kyu-Hwan Park
- Graduate School of Biotechnology and Department of Food Science and Biotechnology, College of Life Sciences, Kyung Hee University , Yongin 17104, Korea
| | - Young-Rok Kim
- Graduate School of Biotechnology and Department of Food Science and Biotechnology, College of Life Sciences, Kyung Hee University , Yongin 17104, Korea
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19
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Crawford AC, Laurentius LB, Mulvihill TS, Granger JH, Spencer JS, Chatterjee D, Hanson KE, Porter MD. Detection of the tuberculosis antigenic marker mannose-capped lipoarabinomannan in pretreated serum by surface-enhanced Raman scattering. Analyst 2018; 142:186-196. [PMID: 27924983 DOI: 10.1039/c6an02110g] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The ability to detect tuberculosis (TB) continues to be a global health care priority. This paper describes the development and preliminary assessment of the clinical accuracy of a heterogeneous immunoassay that integrates a serum pretreatment process with readout by surface-enhanced Raman scattering (SERS) for the low-level detection of mannose-capped lipoarabinomannan (ManLAM). ManLAM is a major virulence factor in the infectious pathology of Mycobacterium tuberculosis (Mtb) that has been found in the serum and other body fluids of infected patients. The effectiveness of ManLAM as a TB diagnostic marker, however, remains unproven for reasons not yet well understood. As reported herein, we have found that (1) ManLAM complexes with proteins and possibly other components in serum; (2) these complexes have a strongly detrimental impact on the ability to detect ManLAM using an immunoassay; (3) a simple pretreatment step can disrupt this complexation; and (4) disruption by pretreatment improves detection by 250×. We also describe the results from a preliminary assessment on the utility of serum pretreatment by running immunoassays on archived specimens from 24 TB-positive patients and 10 healthy controls. ManLAM was measurable in 21 of the 24 TB-positive specimens, but not in any of the 10 control specimens. These findings, albeit for a very small specimen set, translate to a clinical sensitivity of 87.5% and a clinical specificity of 100%. Together, these results both provide much needed evidence for the clinical utility of ManLAM as a TB marker, and demonstrate the potential utility of our overall approach to serve as a new strategy for the development of diagnostic tests for this disease.
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Affiliation(s)
- Alexis C Crawford
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA and Nano Institute of Utah, University of Utah, Salt Lake City, UT 84112, USA.
| | - Lars B Laurentius
- Nano Institute of Utah, University of Utah, Salt Lake City, UT 84112, USA.
| | | | - Jennifer H Granger
- Nano Institute of Utah, University of Utah, Salt Lake City, UT 84112, USA.
| | - John S Spencer
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO 80523, USA
| | - Delphi Chatterjee
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO 80523, USA
| | - Kimberly E Hanson
- Departments of Internal Medicine and Pathology, University of Utah School of Medicine, Salt Lake City, UT 84112, USA
| | - Marc D Porter
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA and Nano Institute of Utah, University of Utah, Salt Lake City, UT 84112, USA. and Department of Chemical Engineering, University of Utah, Salt Lake City, UT 84112, USA and Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA and Department of Pathology, University of Utah, Salt Lake City, UT 84112, USA
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20
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Advantages, Disadvantages and Modifications of Conventional ELISA. SPRINGERBRIEFS IN APPLIED SCIENCES AND TECHNOLOGY 2018. [DOI: 10.1007/978-981-10-6766-2_5] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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21
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Xi W, Shrestha BK, Haes AJ. Promoting Intra- and Intermolecular Interactions in Surface-Enhanced Raman Scattering. Anal Chem 2017; 90:128-143. [DOI: 10.1021/acs.analchem.7b04225] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Wenjing Xi
- Department of Chemistry, University of Iowa, Iowa City, Iowa, 55242 United States
| | - Binaya K. Shrestha
- Department of Chemistry, University of Iowa, Iowa City, Iowa, 55242 United States
| | - Amanda J. Haes
- Department of Chemistry, University of Iowa, Iowa City, Iowa, 55242 United States
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22
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Al-Akraa IM, Mohammad AM, El-Deab MS, El-Anadouli BE. Flower-shaped gold nanoparticles: Preparation, characterization, and electrocatalytic application. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2015.05.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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23
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Gold Nanoplates for a Localized Surface Plasmon Resonance-Based Boric Acid Sensor. SENSORS 2017; 17:s17050947. [PMID: 28441323 PMCID: PMC5461071 DOI: 10.3390/s17050947] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 04/06/2017] [Accepted: 04/19/2017] [Indexed: 02/04/2023]
Abstract
Localized surface plasmon resonance (LSPR) properties of metallic nanostructures, such as gold, are very sensitive to the dielectric environment of the material, which can simply be adjusted by changing its shape and size through modification of the synthesizing process. Thus, these unique properties are very promising, particularly for the detection of various types of chemicals, for example boric acid which is a non-permitted preservative employed in food preparations. For the sensing material, gold (Au) nanoplates with a variety of shapes, i.e., triangular, hexagonal, truncated pentagon and flat rod, were prepared using a seed-mediated growth method. The yield of Au nanoplates was estimated to be ca. 63% over all areas of the sensing material. The nanoplates produced two absorption bands, i.e., the transverse surface plasmon resonance (t-SPR) and the longitudinal surface plasmon resonance (l-SPR) at 545 nm and 710 nm, respectively. In the sensing study, these two bands were used to examine the response of gold nanoplates to the presence of boric acid in an aqueous environment. In a typical process, when the sample is immersed into an aqueous solution containing boric acid, these two bands may change their intensity and peak centers as a result of the interaction between the boric acid and the gold nanoplates. The changes in the intensities and peak positions of t-SPR and l-SPR linearly correlated with the change in the boric acid concentration in the solution.
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24
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Carnerero JM, Jimenez‐Ruiz A, Castillo PM, Prado‐Gotor R. Covalent and Non‐Covalent DNA–Gold‐Nanoparticle Interactions: New Avenues of Research. Chemphyschem 2016; 18:17-33. [DOI: 10.1002/cphc.201601077] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Indexed: 12/19/2022]
Affiliation(s)
- Jose M. Carnerero
- Physical Chemistry. Faculty of Chemistry University of Seville C/Profesor Garcia Gonzalez, s/n 41012 Seville Spain
| | - Aila Jimenez‐Ruiz
- Physical Chemistry. Faculty of Chemistry University of Seville C/Profesor Garcia Gonzalez, s/n 41012 Seville Spain
| | - Paula M. Castillo
- Physical Chemistry. Faculty of Chemistry University of Seville C/Profesor Garcia Gonzalez, s/n 41012 Seville Spain
| | - Rafael Prado‐Gotor
- Physical Chemistry. Faculty of Chemistry University of Seville C/Profesor Garcia Gonzalez, s/n 41012 Seville Spain
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25
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Abstract
Understanding protein-inorganic surface interactions is central to the rational design of new tools in biomaterial sciences, nanobiotechnology and nanomedicine. Although a significant amount of experimental research on protein adsorption onto solid substrates has been reported, many aspects of the recognition and interaction mechanisms of biomolecules and inorganic surfaces are still unclear. Theoretical modeling and simulations provide complementary approaches for experimental studies, and they have been applied for exploring protein-surface binding mechanisms, the determinants of binding specificity towards different surfaces, as well as the thermodynamics and kinetics of adsorption. Although the general computational approaches employed to study the dynamics of proteins and materials are similar, the models and force-fields (FFs) used for describing the physical properties and interactions of material surfaces and biological molecules differ. In particular, FF and water models designed for use in biomolecular simulations are often not directly transferable to surface simulations and vice versa. The adsorption events span a wide range of time- and length-scales that vary from nanoseconds to days, and from nanometers to micrometers, respectively, rendering the use of multi-scale approaches unavoidable. Further, changes in the atomic structure of material surfaces that can lead to surface reconstruction, and in the structure of proteins that can result in complete denaturation of the adsorbed molecules, can create many intermediate structural and energetic states that complicate sampling. In this review, we address the challenges posed to theoretical and computational methods in achieving accurate descriptions of the physical, chemical and mechanical properties of protein-surface systems. In this context, we discuss the applicability of different modeling and simulation techniques ranging from quantum mechanics through all-atom molecular mechanics to coarse-grained approaches. We examine uses of different sampling methods, as well as free energy calculations. Furthermore, we review computational studies of protein-surface interactions and discuss the successes and limitations of current approaches.
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26
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Demirdjian B, Bedu F, Ranguis A, Ozerov I, Karapetyan A, Henry CR. Indirect Nanoplasmonic Sensing to Probe with a High Sensitivity the Interaction of Water Vapor with Soot Aerosols. J Phys Chem Lett 2015; 6:4148-4152. [PMID: 26722790 DOI: 10.1021/acs.jpclett.5b01630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We demonstrate in this work that the indirect nanoplasmonic sensing lets us follow the adsorption/desorption of water molecules on soot particles that are a major contributor of the global warming. Increasing the relative humidity of the surrounding medium we measure a shift in wavelength of the localized surface plasmon resonance response of gold nanodisks on which soot particles are deposited. We show a singular and reversible blue shift with hydrophilic aircraft soot particles interpreted from a basic model as a reversible morphological change of the soot aggregates. This new method is highly sensitive and interesting to follow the change of optical properties of aerosols during their aging in the atmosphere, where they can adsorb and react with different gas molecules.
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Affiliation(s)
| | - Frederic Bedu
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - Alain Ranguis
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - Igor Ozerov
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - Artak Karapetyan
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - Claude R Henry
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
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27
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Bhattarai JK, Sharma A, Fujikawa K, Demchenko AV, Stine KJ. Electrochemical synthesis of nanostructured gold film for the study of carbohydrate-lectin interactions using localized surface plasmon resonance spectroscopy. Carbohydr Res 2015; 405:55-65. [PMID: 25442712 PMCID: PMC4355165 DOI: 10.1016/j.carres.2014.08.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 07/15/2014] [Accepted: 08/30/2014] [Indexed: 11/18/2022]
Abstract
Localized surface plasmon resonance (LSPR) spectroscopy is a label-free chemical and biological molecular sensing technique whose sensitivity depends upon development of nanostructured transducers. Herein, we report an electrodeposition method for fabricating nanostructured gold films (NGFs) that can be used as transducers in LSPR spectroscopy. The NGF was prepared by electrodepositing gold from potassium dicyanoaurate solution onto a flat gold surface using two sequential controlled potential steps. Imaging by scanning electron microscopy reveals a morphology consisting of randomly configured block-like nanostructures. The bulk refractive index sensitivity of the prepared NGF is 100±2 nmRIU(-1) and the initial peak in the reflectance spectrum is at 518±1 nm under N2(g). The figure of merit is 1.7. In addition, we have studied the interaction between carbohydrate (mannose) and lectin (Concanavalin A) on the NGF surface using LSPR spectroscopy by measuring the interaction of 8-mercaptooctyl-α-d-mannopyranoside (αMan-C8-SH) with Concanavalin A by first immobilizing αMan-C8-SH in mixed SAMs with 3,6-dioxa-8-mercaptooctanol (TEG-SH) on the NGF surface. The interaction of Con A with the mixed SAMs is confirmed using electrochemical impedance spectroscopy. Finally, the NGF surface was regenerated to its original sensitivity by removing the SAM and the bound biomolecules. The results from these experiments contribute toward the development of inexpensive LSPR based sensors that could be useful for studying glycan-protein interactions and other bioanalytical purposes.
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Affiliation(s)
- Jay K Bhattarai
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, MO 63121, United States; Center for Nanoscience, University of Missouri-St. Louis, One University Boulevard, St. Louis, MO 63121, United States
| | - Abeera Sharma
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, MO 63121, United States; Center for Nanoscience, University of Missouri-St. Louis, One University Boulevard, St. Louis, MO 63121, United States
| | - Kohki Fujikawa
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, MO 63121, United States
| | - Alexei V Demchenko
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, MO 63121, United States
| | - Keith J Stine
- Department of Chemistry and Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, MO 63121, United States; Center for Nanoscience, University of Missouri-St. Louis, One University Boulevard, St. Louis, MO 63121, United States.
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28
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Matteini P, de Angelis M, Ulivi L, Centi S, Pini R. Concave gold nanocube assemblies as nanotraps for surface-enhanced Raman scattering-based detection of proteins. NANOSCALE 2015; 7:3474-80. [PMID: 25563172 DOI: 10.1039/c4nr05704j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
SERS detection of proteins is typically performed by using labeling agents with stable and high Raman scattering cross sections. This is a valuable approach for trace detection and quantification of a target protein but is unsuitable for inspecting its inherent structural and functional properties. On the other hand, direct SERS of proteins has been mainly devoted to the study of short peptides and aminoacid sequences or of prosthetic groups with intense Raman signals, which is of scarce interest for a thorough characterization of most proteins. Here we try to overcome these limitations by setting-up an effective platform for the structural SERS analysis of proteins. The platform consists of an extended bidimensional array of gold concave nanocubes (CNCs) supported on a PDMS film. CNCs are closely-packed through face-face and face-corner interactions generating a monolayered arrangement featuring well distributed nanoholes. Here the protein homogeneously experiences an E-field enhancement outward from the metal surfaces surrounding it, which causes a large number of vibrations to be contemporarily amplified. The proposed platform provides stable and detailed SERS spectra and confers rapidity and reproducibility to the analysis.
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Affiliation(s)
- Paolo Matteini
- Institute of Applied Physics "Nello Carrara", National Research Council, via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy.
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29
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Irving BJ, Naumkin FY. Computational cogitation of Cn@Al12 clusters. Chemphyschem 2015; 16:233-42. [PMID: 25284449 DOI: 10.1002/cphc.201402436] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Indexed: 11/11/2022]
Abstract
A variety of novel Cn Al12 core-shell nanoclusters have been investigated using density functional calculations. A series of Cn cores (n=1-4) have been encapsulated by icosahedral Al12 , with characteristic physical properties (energetics and stabilities, ionisation energies, electron affinities) calculated for each cluster. Other isomers, with the Cn moiety bound externally to the Al12 shell, have also been studied. For both series, a peak in stability was found for n(C)=2, a characteristic that appears to be inextricably linked with the relaxation of the constituent parts upon dissociation. Analysis of trends for ionisation energies and electron affinities includes evaluation of contributions from the carbon and aluminium components, which highlights the effects of composition and morphology on cluster properties.
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Affiliation(s)
- Benjamin J Irving
- Faculty of Science, University of Ontario Institute of Technology, Oshawa, ON, L1H 7K4 (Canada).
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30
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High angular-resolution automated visible-wavelength scanning angle Raman microscopy. Anal Chim Acta 2014; 848:61-66. [PMID: 25263117 DOI: 10.1016/j.aca.2014.07.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Revised: 07/24/2014] [Accepted: 07/29/2014] [Indexed: 11/21/2022]
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31
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SalmanOgli A, Behzadi S, Rostami A. Simulation of Optical Signaling Among Nano-Bio-Sensors: Enhancing of Bioimaging Contrast. IEEE Trans Nanobioscience 2014; 13:327-35. [DOI: 10.1109/tnb.2014.2311834] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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32
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Huang YC, Chiang CY, Li CH, Chang TC, Chiang CS, Chau LK, Huang KW, Wu CW, Wang SC, Lyu SR. Quantification of tumor necrosis factor-α and matrix metalloproteinases-3 in synovial fluid by a fiber-optic particle plasmon resonance sensor. Analyst 2014; 138:4599-606. [PMID: 23752352 DOI: 10.1039/c3an00276d] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The availability of techniques for sensitive detection of early stage osteoarthritis is critical for improving patient health. This study illustrates the feasibility of a fiber-optic particle plasmon resonance (FOPPR) sensor with gold nanoparticles on the unclad region of optical fiber probes for analysis of osteoarthritis biomarkers, tumor necrosis factor-α (TNF-α) and matrix metalloproteinases-3 (MMP-3). Results show that the sensor can achieve a refractive index resolution of 5.18 × 10⁻⁷ RIU and limits of detection for TNF-α and MMP-3 as low as 8.22 pg ml⁻¹ (0.48 pM) and 34.3 pg ml⁻¹ (1.56 pM), respectively. Additionally, the FOPPR sensor shows a good correlation in determining TNF-α and MMP-3 in synovial fluid with the clinically accepted enzyme-linked immunosorbent assay (ELISA) method. Finally, given the FOPPR sensor's nature of being low-cost, label-free, highly sensitive, real-time, simple-to-operate, the FOPPR sensor could offer potential to monitor biomarkers of various diseases, and provide an ideal technical tool for point-of-care diagnostics.
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Affiliation(s)
- Yi-Ching Huang
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chiayi, 621, Taiwan
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Barnett SM, Harris N, Baumberg JJ. Molecules in the mirror: how SERS backgrounds arise from the quantum method of images. Phys Chem Chem Phys 2014; 16:6544-9. [PMID: 24584480 PMCID: PMC4047623 DOI: 10.1039/c4cp00093e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
The SERS background can be derived from the interaction of a molecule near a plasmonic surface with its image molecule.
The Raman coupling of light to molecular vibrations is strongly modified when they are placed near a plasmonic metal surface, with the appearance of a strong broad continuum background in addition to the normal surface-enhanced Raman scattering (SERS) peaks. Using a quantum method of images approach, we produce a simple but quantitative explanation of the inevitable presence of the background, due to the resistive damping of the image molecule. This model thus suggests new strategies for enhancing the SERS peak to background ratio.
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Affiliation(s)
- Stephen M Barnett
- School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, UK
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Freitas M, Viswanathan S, Nouws H, Oliveira M, Delerue-Matos C. Iron oxide/gold core/shell nanomagnetic probes and CdS biolabels for amplified electrochemical immunosensing of Salmonella typhimurium. Biosens Bioelectron 2014; 51:195-200. [DOI: 10.1016/j.bios.2013.07.048] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 07/19/2013] [Accepted: 07/25/2013] [Indexed: 11/25/2022]
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35
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Khorasaninejad M, Mohsen Raeis-Zadeh S, Amarloo H, Abedzadeh N, Safavi-Naeini S, Saini SS. Colorimetric sensors using nano-patch surface plasmon resonators. NANOTECHNOLOGY 2013; 24:355501. [PMID: 23917424 DOI: 10.1088/0957-4484/24/35/355501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A two-dimensional array of gold nano-patches on a highly reflective mirror is proposed for refractive index sensing based on changes in the reflected colors. The grating on the mirror creates localized surface plasmon resonances resulting in a minimum in the visible reflectance spectra. The wavelength of the resonance can be tuned by changing the width of the nano-patches and is also dependent on the refractive index of the surrounding medium. The color variation due to change in the refractive index is measured and used to realize a simple low-cost sensor with a refractive index resolution better than 10⁻⁵ just using image processing. The efficacy of the proposed sensor is also demonstrated for surface sensing by depositing thin layers of silicon dioxide. The color difference due to the addition of a 3 nm thick layer of silicon dioxide is detectable by the naked eye and deposition thickness of 2 Å can be resolved using image processing.
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Affiliation(s)
- Mohammadreza Khorasaninejad
- Department of Electrical and Computer Engineering, and Waterloo Institute of Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada.
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36
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Delfino I. Light scattering methods for tracking gold nanoparticles aggregation induced by biotin–neutravidin interaction. Biophys Chem 2013; 177-178:7-13. [DOI: 10.1016/j.bpc.2013.03.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 03/04/2013] [Accepted: 03/04/2013] [Indexed: 11/26/2022]
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37
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Ozhikandathil J, Packirisamy M. Detection of recombinant growth hormone by evanescent cascaded waveguide coupler on silica-on-silicon. JOURNAL OF BIOPHOTONICS 2013; 6:457-67. [PMID: 22829397 DOI: 10.1002/jbio.201200094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 06/21/2012] [Accepted: 07/08/2012] [Indexed: 05/26/2023]
Abstract
An evanescent wave based biosensor is developed on the silica-on-silicon (SOS) with a cascaded waveguide coupler for the detection of recombinant growth hormone. So far, U -bends and tapered waveguides are demonstrated for increasing the penetration depth and enhancing sensitivity of the evanescent wave sensor. In this work, a monolithically integrated sensor platform containing a cascaded waveguide coupler with optical power splitters and combiners designed with S -bends and tapper waveguides is demonstrated for an enhanced detection of recombinant growth hormone. In the cascaded waveguide coupler, a large surface area to bind the antibody with increased penetration depth of evanescent wave to excite the tagged-rbST is obtained by splitting the waveguide into multiple paths using Y splitters designed with s -bends and subsequently combining them back to a single waveguide through tapered waveguide and combiners. Hence a highly sensitive fluoroimmunoassay sensor is realized. Using the 2D FDTD (Finite-difference time-domain method) simulation of waveguide with a point source in Rsoft FullWAVE, the fluorescence coupling efficiency of straight and bend section of waveguide is analyzed. The sensor is demonstrated for the detection of fluorescently-tagged recombinant growth hormone with the detection limit as low as 25 ng/ml.
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Affiliation(s)
- Jayan Ozhikandathil
- Optical Bio-Microsystems Laboratory, Department of Mechanical and Industrial Engineering, Concordia University, Montreal, Canada
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38
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Malic L, Morton K, Clime L, Veres T. All-thermoplastic nanoplasmonic microfluidic device for transmission SPR biosensing. LAB ON A CHIP 2013; 13:798-810. [PMID: 23287840 DOI: 10.1039/c2lc41123g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Early and accurate disease diagnosis still remains a major challenge in clinical settings. Biomarkers could potentially provide useful tools for the detection and monitoring of disease progression, treatment safety and efficacy. Recent years have witnessed prodigious advancement in biosensor development with research directed towards rapid, real-time, label-free and sensitive biomarker detection. Among emerging techniques, nanoplasmonic biosensors pose tremendous potential to accelerate clinical diagnosis with real-time multiplexed analysis, rapid and miniaturized assays, low sample consumption and high sensitivity. In order to translate these technologies from the proof-of-principle concept level to point of care clinical diagnosis, integrated, portable devices having small footprint cartridges that house low-cost disposable consumables are sought. Towards this goal, we developed an all-polymeric nanoplasmonic microfluidic (NMF) transmission surface plasmon resonance (SPR) biosensor. The device was fabricated in thermoplastics using a simple, single step and cost-effective hot embossing technique amenable to mass production. The novel 3D hierarchical mold fabrication process enabled monolithic integration of blazed nanogratings within the detection chambers of a multichannel microfluidic system. Consequently, a single hard thermoplastic bottom substrate comprising plasmonic and fluidic features allowed integration of active fluidic elements, such as pneumatic valves, in the top soft thermoplastic cover, increasing device functionality. A simple and compact transmission-based optical setup was employed with multiplexed end-point or dual-channel kinetic detection capability which did not require stringent angular accuracy. The sensitivity, specificity and reproducibility of the transmission SPR biosensor was demonstrated through label-free immunodetection of soluble cell-surface glycoprotein sCD44 at clinically relevant picomolar to nanomolar concentrations.
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Affiliation(s)
- Lidija Malic
- National Research Council Canada, Boucherville, QC, Canada
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Kim CS, Qi W, Zhang J, Kwon YJ, Chen Z. Imaging and quantifying Brownian motion of micro- and nanoparticles using phase-resolved Doppler variance optical coherence tomography. JOURNAL OF BIOMEDICAL OPTICS 2013; 18:030504. [PMID: 23515863 PMCID: PMC3603150 DOI: 10.1117/1.jbo.18.3.030504] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Revised: 02/25/2013] [Accepted: 02/28/2013] [Indexed: 05/17/2023]
Abstract
Different types and sizes of micro- and nanoparticles have been synthesized and developed for numerous applications. It is crucial to characterize the particle sizes. Traditional dynamic light scattering, a predominant method used to characterize particle size, is unable to provide depth resolved information or imaging functions. Doppler variance optical coherence tomography (OCT) measures the spectral bandwidth of the Doppler frequency shift due to the Brownian motion of the particles utilizing the phase-resolved approach and can provide quantitative information about particle size. Spectral bandwidths of Doppler frequency shifts for various sized particles were quantified and were demonstrated to be inversely proportional to the diameter of the particles. The study demonstrates the phase-resolved Doppler variance spectral domain OCT technique has the potential to be used to investigate the properties of particles in highly scattering media.
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Affiliation(s)
- Chang Soo Kim
- University of California, Irvine, Department of Chemical Engineering and Materials Science, Irvine, California 92697
- University of California, Irvine, Beckman Laser Institute, Irvine, California 92612
| | - Wenjuan Qi
- University of California, Irvine, Department of Chemical Engineering and Materials Science, Irvine, California 92697
- University of California, Irvine, Beckman Laser Institute, Irvine, California 92612
| | - Jun Zhang
- University of California, Irvine, Beckman Laser Institute, Irvine, California 92612
- Address all correspondence to: Young Jik Kwon, University of California, Irvine, Departments of Chemical Engineering and Materials Science, Pharmaceutical Sciences, Biomedical Engineering, and Molecular Biology and Biochemistry, Irvine, California 92697; Tel: +949-824-8714; Fax: +949-824-4023; E-mail or Zhongping Chen, University of California, Irvine, Beckman Laser Institute, Departments of Chemical Engineering and Materials Science and Biomedical Engineering, Irvine, California 92697. Tel: +949-824-1247; Fax: +949-824-8413; E-mail
| | - Young Jik Kwon
- University of California, Irvine, Department of Chemical Engineering and Materials Science, Irvine, California 92697
- University of California, Irvine, Department of Pharmaceutical Sciences, Irvine, California 92697
- University of California, Irvine, Department of Biomedical Engineering, Irvine, California 92697
- University of California, Irvine, Department of Molecular Biology and Biochemistry, Irvine, California 92697
| | - Zhongping Chen
- University of California, Irvine, Department of Chemical Engineering and Materials Science, Irvine, California 92697
- University of California, Irvine, Beckman Laser Institute, Irvine, California 92612
- University of California, Irvine, Department of Biomedical Engineering, Irvine, California 92697
- Pusan National University, Department of Cogno-Mechatronics Engineering, World Class University Program, Busan 609-735, Republic of Korea
- Address all correspondence to: Young Jik Kwon, University of California, Irvine, Departments of Chemical Engineering and Materials Science, Pharmaceutical Sciences, Biomedical Engineering, and Molecular Biology and Biochemistry, Irvine, California 92697; Tel: +949-824-8714; Fax: +949-824-4023; E-mail or Zhongping Chen, University of California, Irvine, Beckman Laser Institute, Departments of Chemical Engineering and Materials Science and Biomedical Engineering, Irvine, California 92697. Tel: +949-824-1247; Fax: +949-824-8413; E-mail
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Couture M, Zhao SS, Masson JF. Modern surface plasmon resonance for bioanalytics and biophysics. Phys Chem Chem Phys 2013; 15:11190-216. [DOI: 10.1039/c3cp50281c] [Citation(s) in RCA: 133] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Dettin M, Silvestri D, Danesin R, Cretaio E, Picariello G, Casarin E, Sonato A, Romanato F, Morpurgo M. Synthesis and chromatography-free purification of PNA-PEO conjugates for the functionalisation of gold sensors. Molecules 2012; 17:11026-45. [PMID: 22976467 PMCID: PMC6268724 DOI: 10.3390/molecules170911026] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Revised: 08/30/2012] [Accepted: 08/31/2012] [Indexed: 01/06/2023] Open
Abstract
Peptide Nucleic Acids (PNAs) linked to high molecular weight (MW) poly(ethylene oxide) (PEO) derivatives could be useful conjugates for the direct functionalisation of gold surfaces dedicated to Surface Plasmon Resonance (SPR)-based DNA sensing. However their use is hampered by the difficulty to obtain them through a convenient and economical route. In this work we compared three synthetic strategies to obtain PNA-high MW PEO conjugates composed of (a) a 15-mer PNA sequence as the probe complementary to genomic DNA of Mycobacterium tuberculosis, (b) a PEO moiety (2 or 5 KDa MW) and (c) a terminal trityl-protected thiol necessary (after acidic deprotection) for grafting to gold surfaces. The 15-mer PNA was obtained by solid-phase synthesis. Its amino terminal group was later condensed to bi-functional PEO derivatives (2 and 5 KDa MW) carrying a Trt-cysteine at one end and a carboxyl group at the other end. The reaction was carried out either in solution, using HATU or PyOxim as coupling agents, or through the solid-phase approach, with 49.6%, 100% and 5.2% yield, respectively. A differential solvent extraction strategy for product purification without the need for chromatography is described. The ability of the 5 KDa PEO conjugate to function as a probe for complementary DNA detection was demonstrated using a Grating-Coupling Surface Plasmon Resonance (GC-SPR) system. The optimized PEO conjugation and purification protocols are economical and simple enough to be reproduced also within laboratories that are not highly equipped for chemical synthesis.
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Affiliation(s)
- Monica Dettin
- Department of Industrial Engineering, University of Padova, via Marzolo, 9, 35131 Padova, Italy; (M.D.); (R.D.)
| | - Davide Silvestri
- Department of Pharmaceutical Chemistry and Pharmacology, University of Padova, via Marzolo, 5, 35131 Padova, Italy; (D.S.); (E.C.)
| | - Roberta Danesin
- Department of Industrial Engineering, University of Padova, via Marzolo, 9, 35131 Padova, Italy; (M.D.); (R.D.)
| | - Erica Cretaio
- Inter-University Consortium of Veneto for Nanotechnology (CIVEN), via delle Industrie, 5, 30174 Venezia, Italy;
| | | | - Elisabetta Casarin
- Department of Pharmaceutical Chemistry and Pharmacology, University of Padova, via Marzolo, 5, 35131 Padova, Italy; (D.S.); (E.C.)
| | - Agnese Sonato
- Physics Department, University of Padova, via Marzolo, 8, 35131 Padova, Italy; (A.S.); (F.R.)
| | - Filippo Romanato
- Physics Department, University of Padova, via Marzolo, 8, 35131 Padova, Italy; (A.S.); (F.R.)
| | - Margherita Morpurgo
- Department of Pharmaceutical Chemistry and Pharmacology, University of Padova, via Marzolo, 5, 35131 Padova, Italy; (D.S.); (E.C.)
- Author to whom correspondence should be addressed; ; Tel.: +39-049-827-5330; Fax: +39-049-827-5366
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Han XX, Ozaki Y, Zhao B. Label-free detection in biological applications of surface-enhanced Raman scattering. Trends Analyt Chem 2012. [DOI: 10.1016/j.trac.2012.05.006] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Ozhikandathil J, Badilescu S, Packirisamy M. Gold nanoisland structures integrated in a lab-on-a-chip for plasmonic detection of bovine growth hormone. JOURNAL OF BIOMEDICAL OPTICS 2012; 17:077001. [PMID: 22894514 DOI: 10.1117/1.jbo.17.7.077001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Three-dimensional gold nanostructures fabricated through a novel convective assembly method are treated thermally to obtain a nanoisland morphology. The new structure is proved to be adequate for the detection of bovine growth hormone, by using an immunoassay method based on the localized surface plasmon resonance band of gold. The nanoisland structures are integrated into a microfluidic device and the spectral measurements are carried out by introducing the device directly in the light beam of a ultraviolet-visible spectrophotometer. The principal motivation for this work is the need for a simple and rapid method of detection of hormone levels in milk and milk products.
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Affiliation(s)
- Jayan Ozhikandathil
- Concordia University, Optical Bio-Microsystems Laboratory, Department of Mechanical and Industrial Engineering, Montreal, H3G 1M8, Canada
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Truong PL, Kim BW, Sim SJ. Rational aspect ratio and suitable antibody coverage of gold nanorod for ultra-sensitive detection of a cancer biomarker. LAB ON A CHIP 2012; 12:1102-1109. [PMID: 22298159 DOI: 10.1039/c2lc20588b] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We report a simple, ultra-sensitive, and straightforward method for non-labeling detection of a cancer biomarker, using Rayleigh light scattering spectroscopy of the individual nanosensor based on antibody-antigen recognition and localized surface plasmon resonance (LSPR) λ(max) shifts. By experimentally measuring the refractive index sensitivity of Au nanorods, the Au nanorod with an aspect ratio of ~3.5 was proven optimal for the LSPR sensing. To reduce the steric hindrance effect as well as to immobilize a large amount of ligand on the nanoparticle surface, various mixtures containing different molar ratios of HS(CH(2))(11)(OCH(2)CH(2))(6)OCH(2)COOH and HS(CH(2))(11)(OCH(2)CH(2))(3)OH were applied to form different self-assembled monolayer surfaces. The results showed that the best molar ratio for antibody conjugation was 1 : 10. When using individual Au nanorod sensors for the detection of prostate specific antigen (PSA), the lowest concentration recorded was ~1 aM (~6 × 10(5) molecules), corresponding to LSPR λ(max) shifts of ~4.2 nm. These results indicate that sensor miniaturization down to the nanoscale level, the reduction of steric hindrance, and optimization of size, shape, and aspect ratio of nanorods have led to a significant improvement in the detection limit of sensors.
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Affiliation(s)
- Phuoc Long Truong
- School of Chemical Engineering, Sungkyunkwan University, Suwon, Korea
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Ozhikandathil J, Packirisamy M. Nano-islands integrated evanescence-based lab-on-a-chip on silica-on-silicon and polydimethylsiloxane hybrid platform for detection of recombinant growth hormone. BIOMICROFLUIDICS 2012; 6:46501. [PMID: 24106526 PMCID: PMC3482249 DOI: 10.1063/1.4757968] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2012] [Accepted: 09/25/2012] [Indexed: 05/13/2023]
Abstract
Integration of nano-materials in optical microfluidic devices facilitates the realization of miniaturized analytical systems with enhanced sensing abilities for biological and chemical substances. In this work, a novel method of integration of gold nano-islands in a silica-on-silicon-polydimethylsiloxane microfluidic device is reported. The device works based on the nano-enhanced evanescence technique achieved by interacting the evanescent tail of propagating wave with the gold nano-islands integrated on the core of the waveguide resulting in the modification of the propagating UV-visible spectrum. The biosensing ability of the device is investigated by finite-difference time-domain simulation with a simplified model of the device. The performance of the proposed device is demonstrated for the detection of recombinant growth hormone based on antibody-antigen interaction.
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Affiliation(s)
- J Ozhikandathil
- Optical Bio-Microsystems Laboratory, Department of Mechanical and Industrial Engineering, Concordia University, Montreal, Quebec H3G 1M8, Canada
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Kesavan S, Revin SB, John SA. Fabrication, characterization and application of a grafting based gold nanoparticles electrode for the selective determination of an important neurotransmitter. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm33013j] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ghosh Chaudhuri R, Paria S. Core/shell nanoparticles: classes, properties, synthesis mechanisms, characterization, and applications. Chem Rev 2011; 112:2373-433. [PMID: 22204603 DOI: 10.1021/cr100449n] [Citation(s) in RCA: 1549] [Impact Index Per Article: 119.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Rajib Ghosh Chaudhuri
- Department of Chemical Engineering, National Institute of Technology, Rourkela 769 008, Orissa, India
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Bellapadrona G, Tesler AB, Grünstein D, Hossain LH, Kikkeri R, Seeberger PH, Vaskevich A, Rubinstein I. Optimization of Localized Surface Plasmon Resonance Transducers for Studying Carbohydrate–Protein Interactions. Anal Chem 2011; 84:232-40. [DOI: 10.1021/ac202363t] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Giuliano Bellapadrona
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Alexander B. Tesler
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Dan Grünstein
- Max Planck Institute of Colloids and Interfaces, Department of Biomolecular Systems, 14476 Potsdam, Germany
- Freie Universität Berlin, Institute for Chemistry and Biology, 14195 Berlin, Germany
| | - Laila H. Hossain
- Max Planck Institute of Colloids and Interfaces, Department of Biomolecular Systems, 14476 Potsdam, Germany
| | - Raghavendra Kikkeri
- Max Planck Institute of Colloids and Interfaces, Department of Biomolecular Systems, 14476 Potsdam, Germany
| | - Peter H. Seeberger
- Max Planck Institute of Colloids and Interfaces, Department of Biomolecular Systems, 14476 Potsdam, Germany
- Freie Universität Berlin, Institute for Chemistry and Biology, 14195 Berlin, Germany
| | - Alexander Vaskevich
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 76100, Israel
| | - Israel Rubinstein
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, 76100, Israel
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Chau LK, Kuo CW, Chu YW, Liao SH, Lin YT, Wang CRC. A Fiber Optic Particle Plasmon Resonance Biosensing Platform Based on Detection of Light Scattering Intensity from the Proximal End. J CHIN CHEM SOC-TAIP 2011. [DOI: 10.1002/jccs.201190122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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50
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Gold-Poly(methyl methacrylate) Nanocomposite Films for Plasmonic Biosensing Applications. Polymers (Basel) 2011. [DOI: 10.3390/polym3041833] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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