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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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Okazaki Y, Buffeteau T, Siurdyban E, Talaga D, Ryu N, Yagi R, Pouget E, Takafuji M, Ihara H, Oda R. Direct Observation of Siloxane Chirality on Twisted and Helical Nanometric Amorphous Silica. NANO LETTERS 2016; 16:6411-6415. [PMID: 27585220 DOI: 10.1021/acs.nanolett.6b02858] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Synthesis of chiral inorganic or hybrid nanomaterials through sol-gel transcription of chiral organic templates has attracted a great deal of interest for more than a decade. However, the chiral nature of these inorganic matrices has never been directly observed. For the first time, we report a direct evaluation of chirality on noncrystalline silica chiral nanoribbons by vibrational circular dichroism (VCD) measurements. Strong Cotton effect around 1150-1000 cm-1 from Si-O-Si asymmetric stretching vibration was observed. Surprisingly, calcination of these hybrid nanoribbons doubled the intensity of Cotton effects. On the basis of transmission electron microscopy observations, IR, VCD, NMR, and Raman spectroscopies, we demonstrate that the silica chirality originates from twisted siloxane network composed of chiral arrangement of the Si-O-Si bonds. Our findings clearly prove the presence of chiral organization of amorphous silica network, making them very promising chiral platforms for chiral recognition, optical applications, or asymmetric catalysis.
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Affiliation(s)
- Yutaka Okazaki
- Department of Applied Chemistry and Biochemistry, Kumamoto University , 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555, Japan
| | - Thierry Buffeteau
- Institut des Sciences Moléculaires, (UMR5255 ISM), CNRS, University of Bordeaux , 33405 Talence, France
| | - Elise Siurdyban
- Institut des Sciences Moléculaires, (UMR5255 ISM), CNRS, University of Bordeaux , 33405 Talence, France
| | - David Talaga
- Institut des Sciences Moléculaires, (UMR5255 ISM), CNRS, University of Bordeaux , 33405 Talence, France
| | - Naoya Ryu
- Materials Development Department, Kumamoto Industrial Research Institute , 3-11-38 Higashimachi, Higashi-ku Kumamoto 862-0901, Japan
| | - Ryohei Yagi
- Department of Applied Chemistry and Biochemistry, Kumamoto University , 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555, Japan
| | - Emilie Pouget
- Institute of Chemistry and Biology of Membranes and Nanoobjects (UMR5248 CBMN), CNRS - Universite Bordeaux - Bordeaux INP , 2 rue Robert Escarpit, 33607 Pessac, France
| | - Makoto Takafuji
- Department of Applied Chemistry and Biochemistry, Kumamoto University , 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555, Japan
- Kumamoto Institute for Photo-Electro Organics (PHOENICS) , 3-11-38 Higashimachi, Higashi-ku Kumamoto 862-0901, Japan
| | - Hirotaka Ihara
- Department of Applied Chemistry and Biochemistry, Kumamoto University , 2-39-1 Kurokami, Chuo-ku Kumamoto 860-8555, Japan
- Kumamoto Institute for Photo-Electro Organics (PHOENICS) , 3-11-38 Higashimachi, Higashi-ku Kumamoto 862-0901, Japan
| | - Reiko Oda
- Institute of Chemistry and Biology of Membranes and Nanoobjects (UMR5248 CBMN), CNRS - Universite Bordeaux - Bordeaux INP , 2 rue Robert Escarpit, 33607 Pessac, France
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