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Martínez Á, Scrimin P. Gold nanoparticles crosslinking by peptides and amino acids: A tool for the colorimetric identification of amino acids. Biopolymers 2018. [DOI: 10.1002/bip.23111] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Álvaro Martínez
- Department of Chemical Sciences; University of Padova, via Marzolo, 1; Padova 35131 Italy
| | - Paolo Scrimin
- Department of Chemical Sciences; University of Padova, via Marzolo, 1; Padova 35131 Italy
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Wang Y, Zhu Y, Yang X, Shen J, Zhu J, Qian S, Li C. Plasmonic Au Decorated Single-crystal-like TiO 2
-NaYF 4
Mesoporous Microspheres for Enhanced Broadband Photocatalysis. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201600771] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yuanwei Wang
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Yihua Zhu
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Xiaoling Yang
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Jianhua Shen
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Jingrun Zhu
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 China
| | - Shaohong Qian
- Department of Ophthalmology; EENT Hospital of Fudan University, 83 Fenyang Road; Xuhui District Shanghai 200031 China
| | - Chunzhong Li
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 China
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Cheng J, Le Saux G, Gao J, Buffeteau T, Battie Y, Barois P, Ponsinet V, Delville MH, Ersen O, Pouget E, Oda R. GoldHelix: Gold Nanoparticles Forming 3D Helical Superstructures with Controlled Morphology and Strong Chiroptical Property. ACS NANO 2017; 11:3806-3818. [PMID: 28358490 DOI: 10.1021/acsnano.6b08723] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Plasmonic nanoparticles, particularly gold nanoparticles (GNPs) hold a great potential as structural and functional building blocks for three-dimensional (3D) nanoarchitectures with specific optical applications. However, a rational control of their assembly into nanoscale superstructures with defined positioning and overall arrangement still remains challenging. Herein, we propose a solution to this challenge by using as building blocks: (1) nanometric silica helices with tunable handedness and sizes as a matrix and (2) GNPs with diameter varying from 4 to 10 nm to prepare a collection of helical GNPs superstructures (called Goldhelices hereafter). These nanomaterials exhibit well-defined arrangement of GNPs following the helicity of the silica template. Strong chiroptical activity is evidenced by circular dichroism (CD) spectroscopy at the wavelength of the surface plasmon resonance (SPR) of the GNPs with a anisotropy factor (g-factor) of the order of 1 × 10-4, i.e., 10-fold larger than what is typically reported in the literature. Such CD signals were simulated using a coupled dipole method which fit very well the experimental data. The measured signals are 1-2 orders of magnitude lower than the simulated signals, which is explained by the disordered GNPs grafting, the polydispersity of the GNPs, and the dimension of the nanohelices. These Goldhelices based on inorganic templates are much more robust than previously reported organic-based chiroptical nanostructures, making them good candidates for complex hierarchical organization, providing a promising approach for light management and benefits in applications such as circular polarizers, chiral metamaterials, or chiral sensing in the visible range.
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Affiliation(s)
- Jiaji Cheng
- Chimie et Biologie des Membranes et des Nanoobjets (CBMN), CNRS - Université Bordeaux - Bordeaux INP, UMR 5248 , Allée St Hilaire, Bat B14, 33607 Pessac, France
| | - Guillaume Le Saux
- Chimie et Biologie des Membranes et des Nanoobjets (CBMN), CNRS - Université Bordeaux - Bordeaux INP, UMR 5248 , Allée St Hilaire, Bat B14, 33607 Pessac, France
| | - Jie Gao
- Chimie et Biologie des Membranes et des Nanoobjets (CBMN), CNRS - Université Bordeaux - Bordeaux INP, UMR 5248 , Allée St Hilaire, Bat B14, 33607 Pessac, France
| | - Thierry Buffeteau
- Institut des Sciences Moléculaires (ISM), Université Bordeaux-CNRS, UMR 5255 , 351 Cours de la Libération, 33405 Talence, France
| | - Yann Battie
- Laboratoire de Chimie et Physique - Approche Multi-échelles des milieux Complexes (LCP-A2MC), Université de Lorraine , 1 Boulevard Arago, 57078 Metz, France
| | - Philippe Barois
- Centre de Recherche Paul Pascal (CRPP), Université Bordeaux-CNRS-UPR 8641 , Avenue du Dr Albert Schweitzer, 33600 Pessac, France
| | - Virginie Ponsinet
- Centre de Recherche Paul Pascal (CRPP), Université Bordeaux-CNRS-UPR 8641 , Avenue du Dr Albert Schweitzer, 33600 Pessac, France
| | - Marie-Hélène Delville
- Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), CNRS-UPR 9048 , 87 avenue du Dr. A. Schweitzer, 33608 Pessac, France
| | - Ovidiu Ersen
- Institut de Physique et de Chimie des Matériaux de Strasbourg, UMR 7504 CNRS-Université de Strasbourg , 23 Rue du Loess, 67034 Strasbourg, France
| | - Emilie Pouget
- Chimie et Biologie des Membranes et des Nanoobjets (CBMN), CNRS - Université Bordeaux - Bordeaux INP, UMR 5248 , Allée St Hilaire, Bat B14, 33607 Pessac, France
| | - Reiko Oda
- Chimie et Biologie des Membranes et des Nanoobjets (CBMN), CNRS - Université Bordeaux - Bordeaux INP, UMR 5248 , Allée St Hilaire, Bat B14, 33607 Pessac, France
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Xu Z, Liu Y, Ren F, Yang F, Ma D. Development of functional nanostructures and their applications in catalysis and solar cells. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.03.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Zhang Z, Liu J, Qi ZM, Lu DF. In situ study of self-assembled nanocomposite films by spectral SPR sensor. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 51:242-7. [PMID: 25842131 DOI: 10.1016/j.msec.2015.02.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 12/25/2014] [Accepted: 02/21/2015] [Indexed: 11/30/2022]
Abstract
Spectral surface plasmon resonance (SPR) sensor with a time-resolved charge-coupled device (CCD) detector is a powerful analytical tool for label-free detection of biomolecular interaction at the liquid/solid interface and for in situ study of molecular adsorption behavior. In this work, the layer-by-layer self-assembly processes for three nanocomposite films were monitored in real time using a broadband spectral SPR sensor with a large dynamic range. Kinetics studies suggest that cytochrome c (Cyt c) and deoxy ribonucleic acid (DNA) adsorptions obey the Langmuir-isotherm theory, while gold nanoparticle (GNP) adsorption follows the Diffusion-controlled model. Using poly(sodium 4-styrenesulfonate) (PSS) and poly(dimethyldiallylammonium chloride) (PDDA) as the positively charged agents, three kinds of multilayer films such as the PSS/Cyt c, GNP/Cyt c and PDDA/DNA binary nanocomposites were fabricated on the SPR chips by the electrostatic attraction based on self-assemble. The SPR response in terms of ΔλR was measured to linear increase with increasing the number of layers for a six-bilayer PSS/Cyt c nanocomposite film, indicating that every PSS/Cyt c layer has equal mass coverage. In contrast, the nonlinear dependences of ΔλR on the number of bilayers were observed for the GNP/Cyt c and PDDA/DNA nanocomposite multilayer films.
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Affiliation(s)
- Zhe Zhang
- Department of Biomedical Engineering, School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Jie Liu
- Department of Biomedical Engineering, School of Computer and Information Technology, Beijing Jiaotong University, Beijing 100044, China.
| | - Zhi-mei Qi
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
| | - Dan-feng Lu
- State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
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Hendel T, Wuithschick M, Kettemann F, Birnbaum A, Rademann K, Polte J. In situ determination of colloidal gold concentrations with UV-vis spectroscopy: limitations and perspectives. Anal Chem 2014; 86:11115-24. [PMID: 25289517 DOI: 10.1021/ac502053s] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This paper studies the UV-vis absorbance of colloidal gold nanoparticles at 400 nm and validates it as a method to determine Au(0) concentrations in colloidal gold solutions. The method is shown to be valid with restrictions depending on the investigated system. The uncertainty of the determined Au(0) concentration can be up to 30%. This deviation is the result of the combined influence of parameters such as particle size, surface modification, or oxidation state. However, quantifying the influence of these parameters enables a much more precise Au(0) determination for specific systems. As an example, the reduction process of the well-known Turkevich method was monitored and the Au(0) concentration was determined with a deviation of less than 5%. Hence, a simple, fast, easy, and cheap in situ method for Au(0) determination is demonstrated that has in the presence of other gold species such as Au(III) an unprecedented accuracy.
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Affiliation(s)
- Thomas Hendel
- Institut für Chemie, Humboldt-Universität zu Berlin , Brook-Taylor-Strasse 2, 12489 Berlin, Germany
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Taladriz-Blanco P, Pastoriza-Santos V, Pérez-Juste J, Hervés P. Controllable nitric oxide release in the presence of gold nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:8061-8069. [PMID: 23718250 DOI: 10.1021/la4014762] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A major problem associated with nitric oxide (NO) donors is the release of the desired amount of NO at a specific site. A number of platforms have been developed for the regulation of NO dosage. We present the use of citrate-stabilized gold nanoparticles as a platform to regulate NO release. Because of the affinity between gold and thiols, the characteristic -S-NO bond of S-nitrosothiols (RSNOs) breaks in the presence of gold nanoparticles, thereby releasing NO and modifying the gold nanoparticle surface with the corresponding thiol. This system allows for surface-controlled NO release, where the amount of NO released is proportional to the number of thiols bound to the gold nanoparticle surface. Moreover, by employing an amperometric technique to detect the maximum NO release, we were able to estimate the stoichiometry of the reaction, that is, the number of adsorbed RSNO molecules per gold nanoparticle. A kinetic model for NO release and its subsequent decomposition is proposed and used to fit the experimental results. The reaction was found to be zeroth- and first-order with respect to RSNO and gold nanoparticles, respectively.
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