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Borovikova SA, Shafigulina AD, Revina AA, Buryak AK. The Use of Size-Exclusion Chromatography and Laser Desorption/Ionization for Studying Silver Nanoparticles Synthesized in Reverse Micelles. COLLOID JOURNAL 2022. [DOI: 10.1134/s1061933x22700119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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2
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Selectivity of diallyl trisulfides (DATS) in reducing HAuCl4 to produce gold nanoparticles: a detailed investigation. J CHEM SCI 2021. [DOI: 10.1007/s12039-021-01967-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Rajapantulu A, Bandyopadhyaya R. Formation of Gold Nanoparticles in Water-in-Oil Microemulsions: Experiment, Mechanism, and Simulation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:6623-6631. [PMID: 34032432 DOI: 10.1021/acs.langmuir.1c00084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Self-assembled water-in-oil (W/O) microemulsions have been reported as a suitable route for synthesis of size-controlled nanoparticles. However, the mechanism of formation of nanoparticles in microemulsions is still not completely understood. In this work, gold nanoparticles (GNPs) were synthesized via the W/O microemulsion route. As the molar ratio of water and dioctyl sodium sulphosuccinate (AOT) (R) increased from 2.5 to 5.0 to 7.5, the corresponding water drop diameter increased from 2.7 to 5.0 to 7.3 nm. In parallel, the mean hydrodynamic diameter of GNPs increased from 6.5 to 11.3 to 15.6 nm for corresponding R values of 2.5, 5.0, and 7.5. Therefore, although there is a monotonically increasing trend of the mean diameter of GNPs with the initial drop diameter, for all values of R, the mean diameter of GNPs was significantly higher than the initial drop diameter. Consequently, previously known simulation vastly underpredicts the experimental GNP diameter. However, only on redefining the particle-particle coagulation event (during coalescence of microemulsion drops containing particles) does the current kinetic Monte Carlo (kMC) simulation agree well with the experimental results. In addition, we also find that the coagulation efficiency of solid nanoparticles (βp) increases with R, and βp is lesser than the coalescence efficiency of liquid drops (βd) over the range of R values concerned. Hence, a combined simulation and experimental study enumerates the dynamics of size evolution of nanoparticles and the events involved in their formation in a W/O microemulsion system.
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Affiliation(s)
- Anil Rajapantulu
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Rajdip Bandyopadhyaya
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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Zhan F, Gong L, Luan H, Chen Q, Liao G, Feng Y. Enhancing Oil Recovery by Low Concentration of Alkylaryl Sulfonate Surfactant without Ultralow Interfacial Tension. J SURFACTANTS DETERG 2021. [DOI: 10.1002/jsde.12488] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Fuxing Zhan
- Polymer Research Institute, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 People's Republic of China
| | - Lingyan Gong
- Polymer Research Institute, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 People's Republic of China
| | - Huoxin Luan
- Research Institute of Experiment and Detection Xinjiang Oilfield Branch Company PetroChina Karamay 834000 People's Republic of China
| | - Quansheng Chen
- Research Institute of Experiment and Detection Xinjiang Oilfield Branch Company PetroChina Karamay 834000 People's Republic of China
| | - Guangzhi Liao
- PetroChina Exploration & Production Company Beijing 100007 People's Republic of China
| | - Yujun Feng
- Polymer Research Institute, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 People's Republic of China
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Gong L, Liao G, Luan H, Chen Q, Nie X, Liu D, Feng Y. Oil solubilization in sodium dodecylbenzenesulfonate micelles: New insights into surfactant enhanced oil recovery. J Colloid Interface Sci 2020; 569:219-228. [DOI: 10.1016/j.jcis.2020.02.083] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/18/2020] [Accepted: 02/19/2020] [Indexed: 10/25/2022]
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8
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Wang Y, Xiong Z, He Y, Zhou B, Qu J, Shen M, Shi X, Xia J. Optimization of the composition and dosage of PEGylated polyethylenimine-entrapped gold nanoparticles for blood pool, tumor, and lymph node CT imaging. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 83:9-16. [PMID: 29208291 DOI: 10.1016/j.msec.2017.08.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 07/28/2017] [Accepted: 08/02/2017] [Indexed: 02/01/2023]
Abstract
Gold nanoparticles (Au NPs) with a high X-ray attenuation coefficient have a good potential in CT imaging applications. Here, we report the design and synthesis of Au NPs entrapped within polyethylene glycol (PEG)-modified branched polyethyleneimine (PEI) with varying the initial Au salt/PEI molar ratios and with the remaining PEI surface amines being acetylated for blood pool, lung tumor and lymph node CT imaging. The formed unacetylated and acetylated PEGylated PEI-entrapped Au NPs (Au PENPs) were characterized via different methods. We show that the PEGylated PEI is an effective template to entrap Au NPs having a uniform size ranging from 1.7nm to 4.4nm depending on the Au salt/PEI molar ratio. After optimization of the composition-dependent X-ray attenuation effect, we then selected {(Au0)100-PEI·NHAc-mPEG} NPs for biological testing and show that the particles have good cytocompatibility in the given concentration range and can be used as a contrast agent for effective CT imaging of the blood pool of rats, lung cancer model of nude mice and lymph node of rabbits after intravenous injection. For each application, the injected dosage of the particles was optimized. In addition, the {(Au0)100-PEI·NHAc-mPEG} NPs could be excreted out of the body with time. Our results indicate that the formed Au PENPs with an appropriate composition and dosage hold a great promise to be used for CT imaging of various biosystems.
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Affiliation(s)
- Yue Wang
- Department of Radiology, Shanghai Songjiang District Central Hospital, Shanghai 201600, People's Republic of China
| | - Zhijuan Xiong
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China
| | - Yao He
- Department of Radiology, Shanghai Songjiang District Central Hospital, Shanghai 201600, People's Republic of China
| | - Benqing Zhou
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China
| | - Jiao Qu
- Department of Radiology, Shanghai Songjiang District Central Hospital, Shanghai 201600, People's Republic of China
| | - Mingwu Shen
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China
| | - Xiangyang Shi
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China; CQM-Centro de Química da Madeira, Universidade da Madeira, Campus da Penteada, 9000-390 Funchal, Portugal.
| | - Jindong Xia
- Department of Radiology, Shanghai Songjiang District Central Hospital, Shanghai 201600, People's Republic of China.
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Monti GA, Fernández GA, Correa NM, Falcone RD, Moyano F, Silbestri GF. Gold nanoparticles stabilized with sulphonated imidazolium salts in water and reverse micelles. ROYAL SOCIETY OPEN SCIENCE 2017; 4:170481. [PMID: 28791171 PMCID: PMC5541566 DOI: 10.1098/rsos.170481] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 06/20/2017] [Indexed: 05/20/2023]
Abstract
Herein we describe the synthesis of gold nanoparticles (Au-NPs) in presence of sulphonated imidazolium salts [1,3-bis(2,6-diisopropyl-4-sodiumsulfonatophenyl)imidazolium (L1), 1-mesityl-3-(3-sulfonatopropyl)imidazolium (L2) and 1-(3-sulfonatopropyl)imidazolium (L3)] in water and in a confinement environment created by reverse micelles (RMs). The Au-NPs were characterized-with an excellent agreement between different techniques-by UV-vis spectroscopy, transmission electron microscopy (TEM), dynamic light scattering (DLS) and zeta potential. In homogeneous media, the Au-NPs interact with the imidazolium ring and the sulphonate groups were directed away from the NPs' surface. This fact is responsible for the Au-NPs' stability-over three months-in water. Based on the obtained zeta potential values we assume the degree of coverage of the Au-NPs by the imidazolium salts. In n-heptane/sodium 1,4-bis (2-ethylhexyl) sulfosuccinate (AOT)/water RMs, the Au-NPs formed in presence of sulphonated imidazolium salts present different patterns depending on the ligand used as stabilizer. Interestingly, the Au-NPs are more stable in time when the salts are present in AOT RMs (three weeks) in comparison with the same RMs system but in absence of ligands (less than an hour). Clearly, the sulphonated imidazolium salts are very effective Au-NPs stabilizers in a different medium and this generates a plus to be able to use them for multiple purposes.
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Affiliation(s)
- Gustavo A. Monti
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal no. 3, C.P. X5804BYA Río Cuarto, Argentina
| | - Gabriela A. Fernández
- INQUISUR, Departamento de Química, Universidad Nacional del Sur (UNS)-CONICET, Av. Alem 1253, B8000CPB, Bahía Blanca, Argentina
| | - N. Mariano Correa
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal no. 3, C.P. X5804BYA Río Cuarto, Argentina
| | - R. Darío Falcone
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal no. 3, C.P. X5804BYA Río Cuarto, Argentina
| | - Fernando Moyano
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal no. 3, C.P. X5804BYA Río Cuarto, Argentina
- Authors for correspondence: Fernando Moyano e-mail:
| | - Gustavo F. Silbestri
- INQUISUR, Departamento de Química, Universidad Nacional del Sur (UNS)-CONICET, Av. Alem 1253, B8000CPB, Bahía Blanca, Argentina
- Authors for correspondence: Gustavo F. Silbestri e-mail:
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Zong R, Wang X, Shi S, Zhu Y. Kinetically controlled seed-mediated growth of narrow dispersed silver nanoparticles up to 120 nm: secondary nucleation, size focusing, and Ostwald ripening. Phys Chem Chem Phys 2014; 16:4236-41. [DOI: 10.1039/c3cp54846e] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Jakhmola A, Anton N, Vandamme TF. Inorganic nanoparticles based contrast agents for X-ray computed tomography. Adv Healthc Mater 2012. [PMID: 23184772 DOI: 10.1002/adhm.201200032] [Citation(s) in RCA: 133] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Nanomaterials have gained considerable attention and interest in the development of new and efficient molecular probes for medical diagnosis and imaging. Heavy metal nanoparticles as such are excellent absorber of X-rays and can offer excellent improvement in medical diagnosis and X-ray imaging. Substantial progress has been made in the synthesis protocol and characterization studies of these materials but a major challenge still lies in the toxicological studies, which are rather incomplete. The worst known cases were those associated with Thorotrast (suspension of ThO(2) nanoparticles) which resulted in many deaths over years. Properly protected nanomaterials conjugated or coated with biocompatible materials can be used for the fabrication of various functional systems with multimodality, targeting properties, reduced toxicity and proper removal from the body. This review aims mainly to provide the advances in the development of inorganic nanoparticle based X-ray contrasting agents with an overview of methods of their preparation, functionalization and applications in medical diagnosis.
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Affiliation(s)
- Anshuman Jakhmola
- University of Strasbourg, Faculté de Pharmacie, 74 route du Rhin, BP 60024, F-67401 Illkirch Cedex, France, CNRS 7199, Laboratoire de Conception, et Application de Molécules Bioactives, équipe de Pharmacie Biogalénique
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Muralidharan G, Subramanian L, Nallamuthu SK, Santhanam V, Kumar S. Effect of Reagent Addition Rate and Temperature on Synthesis of Gold Nanoparticles in Microemulsion Route. Ind Eng Chem Res 2011. [DOI: 10.1021/ie2002507] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Girish Muralidharan
- Department of Chemical Engineering, Indian Institute of Science, Bangalore, India-560012
| | - Lakshmanan Subramanian
- Department of Chemical Engineering, Indian Institute of Science, Bangalore, India-560012
| | | | - Venugopal Santhanam
- Department of Chemical Engineering, Indian Institute of Science, Bangalore, India-560012
| | - Sanjeev Kumar
- Department of Chemical Engineering, Indian Institute of Science, Bangalore, India-560012
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Chung JW, Guo Y, Priestley RD, Kwak SY. Colloidal gold nanoparticle formation derived from self-assembled supramolecular structure of cyclodextrin/Au salt complex. NANOSCALE 2011; 3:1766-1772. [PMID: 21321758 DOI: 10.1039/c0nr00894j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We present a novel procedure for the formation of colloidal gold nanoparticles (AuNPs) derived from the supramolecular self-assembled structure of a cyclodextrin (CD)/Au salt complex (SCA) without the necessity for additional reducing or stabilizing agents. The SCA served as a solid template for the formation of gold seeds by solid-state thermal treatment within the confining environment of the α-CD, i.e., the matrix of the SCA. Subsequently, thermally treated SCA, denoted as T-SCA, was placed (without further treatment) into an aqueous medium and gold seeds were nucleated for the formation of α-CD-stabilized AuNPs at room temperature. The surface topology of SCA, as revealed by field-emission scanning electron microscopy (FE-SEM), consisted of flaky plate-like structures. Wide angle X-ray diffraction (WXRD) revealed that the surface topology of SCA resulted from a transformation in the crystalline structure of α-CD from the cage-type to the hexagonally ordered channel-type. The structure transformation on the surface of SCA was attributed to the nucleated self-assembly of surface α-CD molecules by Au salt. From combined FE-SEM, energy-dispersed X-ray spectroscopy (EDXS), WXRD and differential scanning calorimetry (DSC) results, it was concluded that the thermal treatment of SCA led to the formation of gold seeds, attributed to the reduction and aggregation of some Au salt molecules, confined within the interface between the cage-type and channel type structure of the SCA. After placement of T-SCA into an aqueous solution, the growth and stabilization of AuNPs by α-CD were verified by UV-vis spectroscopy. The formation of AuNPs, by this novel method, can be considered a one step seed-mediated growth process. The resulting AuNPs are spherical in morphology, narrowly size distributed and possesses excellent stability. Furthermore, the AuNPs size is tunable by simply controlling water content during nanoparticle growth.
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Affiliation(s)
- Jae Woo Chung
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, USA
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14
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Spirin MG, Brichkin SB, Razumov VF. Specifics of the preparation of anisotropically shaped gold nanoparticles in triton X-100 reverse micelles. HIGH ENERGY CHEMISTRY 2010. [DOI: 10.1134/s001814391001008x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Yavuz M, Li W, Xia Y. Facile Synthesis of Gold Icosahedra in an Aqueous Solution by Reacting HAuCl4withN-Vinyl Pyrrolidone. Chemistry 2009; 15:13181-7. [DOI: 10.1002/chem.200901440] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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Wang Y, Nishida N, Yang P, Toshima N, Du Y. Synthesis, Separation, and Characterization of Au@CdS Nanoparticles. J DISPER SCI TECHNOL 2009. [DOI: 10.1080/01932690802701697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Sugie A, Hatta T, Kanie K, Muramatsu A, Mori A. Synthesis of Thiol-capped Gold Nanoparticles with Organometallic Reagents as a New Class of Reducing Agent. CHEM LETT 2009. [DOI: 10.1246/cl.2009.562] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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18
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Roy P, Dhara K, Manassero M, Banerjee P. A new organic compound for the synthesis of gold nanoparticles. Polyhedron 2008. [DOI: 10.1016/j.poly.2008.07.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Dockendorff J, Gauthier M, Mourran A, Möller M. Arborescent Amphiphilic Copolymers as Templates for the Preparation of Gold Nanoparticles. Macromolecules 2008. [DOI: 10.1021/ma801320r] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jason Dockendorff
- Department of Chemistry, Institute for Polymer Research, University of Waterloo, 200 University Ave. W., Waterloo, Ontario N2L 3G1, Canada, and DWI an der RWTH Aachen e.V. and Institute of Technical and Macromolecular Chemistry, RWTH Aachen, Pauwelsstrasse 8, D-52056 Aachen, Germany
| | - Mario Gauthier
- Department of Chemistry, Institute for Polymer Research, University of Waterloo, 200 University Ave. W., Waterloo, Ontario N2L 3G1, Canada, and DWI an der RWTH Aachen e.V. and Institute of Technical and Macromolecular Chemistry, RWTH Aachen, Pauwelsstrasse 8, D-52056 Aachen, Germany
| | - Ahmed Mourran
- Department of Chemistry, Institute for Polymer Research, University of Waterloo, 200 University Ave. W., Waterloo, Ontario N2L 3G1, Canada, and DWI an der RWTH Aachen e.V. and Institute of Technical and Macromolecular Chemistry, RWTH Aachen, Pauwelsstrasse 8, D-52056 Aachen, Germany
| | - Martin Möller
- Department of Chemistry, Institute for Polymer Research, University of Waterloo, 200 University Ave. W., Waterloo, Ontario N2L 3G1, Canada, and DWI an der RWTH Aachen e.V. and Institute of Technical and Macromolecular Chemistry, RWTH Aachen, Pauwelsstrasse 8, D-52056 Aachen, Germany
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20
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Directed Synthesis of Micro-Sized Nanoplatelets of Gold from a Chemically Active Mixed Surfactant Mesophase. ADVANCES IN POLYMER SCIENCE 2008. [DOI: 10.1007/12_2008_167] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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21
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Wang Y, Du M, Xu J, Yang P, Du Y. Size-Controlled Synthesis of Palladium Nanoparticles. J DISPER SCI TECHNOL 2008. [DOI: 10.1080/01932690701783499] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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22
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Lu X, Tuan HY, Korgel BA, Xia Y. Facile synthesis of gold nanoparticles with narrow size distribution by using AuCl or AuBr as the precursor. Chemistry 2008; 14:1584-91. [PMID: 18058964 DOI: 10.1002/chem.200701570] [Citation(s) in RCA: 123] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Gold(I) halides, including AuCl and AuBr, were employed for the first time as precursors in the synthesis of Au nanoparticles. The synthesis was accomplished by dissolving Au(I) halides in chloroform in the presence of alkylamines, followed by decomposition at 60 degrees C. The relative low stability of the Au(I) halides and there derivatives eliminated the need for a reducing agent, which is usually required for Au(III)-based precursors to generate Au nanoparticles. Controlled growth of Au nanoparticles with a narrow size distribution was achieved when AuCl and oleylamine were used for the synthesis. FTIR and mass spectra revealed that a complex, [AuCl(oleylamine)], was formed through coordination between oleylamine and AuCl. Thermolysis of the complex in chloroform led to the formation of dioleylamine and Au nanoparticles. When oleylamine was replaced with octadecylamine, much larger nanoparticles were obtained due to the lower stability of [AuCl(octadecylamine)] complex relative to [AuCl(oleylamine)]. Au nanoparticles can also be prepared from AuBr through thermolysis of the [AuBr(oleylamine)] complex. Due to the oxidative etching effect caused by Br(-), the nanoparticles obtained from AuBr exhibited an aspect ratio of 1.28, in contrast to 1.0 for the particles made from AuCl. Compared to the existing methods for preparing Au nanoparticles through the reduction of Au(III) compounds, this new approach based on Au(I) halides offers great flexibility in terms of size control.
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Affiliation(s)
- Xianmao Lu
- Department of Biomedical Engineering, Washington University in St. Louis, Saint Louis, MO 63130, USA
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Mackiewicz MR, Ayres BR, Reed SM. Reversible, reagentless solubility changes in phosphatidylcholine-stabilized gold nanoparticles. NANOTECHNOLOGY 2008; 19:115607. [PMID: 21730558 DOI: 10.1088/0957-4484/19/11/115607] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Phosphatidylcholine (PC) is a versatile ligand for synthesizing gold nanoparticles that are soluble in either organic or aqueous media. Here we report a novel route to organic-soluble, PC-stabilized gold nanoparticles that can be re-suspended in water after removal of the organic solvent. Similarly, we show that PC-stabilized gold nanoparticles synthesized in water can be re-suspended in organic solvents after complete removal of water. Without complete removal of the solvent, the nanoparticles retain their original solubility and do not phase transfer. This change in solvent preference from organic to aqueous and vice versa without the use of an additional phase transfer reagent is novel, visually striking, and of utility for synthetic modification of nanoparticles. This approach allows chemical reactions to be performed on nanoparticles in organic solvents followed by conversion of the products to water-soluble materials. A narrow distribution of PC-stabilized gold nanoparticles was obtained after phase transfer to water as characterized by UV-visible (UV-vis) spectroscopy and transmission electron microscopy (TEM), demonstrating that the narrow distribution obtained from the organic synthesis is retained after transfer to water. This method produces water-soluble nanoparticles with a narrower dispersity than is possible with direct aqueous synthesis.
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Surfactant-Mediated Fabrication of Optical Nanoprobes. ADVANCES IN POLYMER SCIENCE 2008. [DOI: 10.1007/12_2008_166] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Sugie A, Somete T, Kanie K, Muramatsu A, Mori A. Triethylsilane as a mild and efficient reducing agent for the preparation of alkanethiol-capped gold nanoparticles. Chem Commun (Camb) 2008:3882-4. [DOI: 10.1039/b806251j] [Citation(s) in RCA: 30] [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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Briñas RP, Hu M, Qian L, Lymar ES, Hainfeld JF. Gold nanoparticle size controlled by polymeric Au(I) thiolate precursor size. J Am Chem Soc 2007; 130:975-82. [PMID: 18154334 DOI: 10.1021/ja076333e] [Citation(s) in RCA: 183] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We developed a method in preparing size-controllable gold nanoparticles (Au NPs, 2-6 nm) capped with glutathione by varying the pH (between 5.5 and 8.0) of the solution before reduction. This method is based on the formation of polymeric nanoparticle precursors, Au(I)-glutathione polymers, which change size and density depending on the pH. Dynamic light scattering, size exclusion chromatography, and UV-vis spectroscopy results suggest that lower pH values favor larger and denser polymeric precursors and higher pH values favor smaller and less dense precursors. Consequently, the larger precursors led to the formation of larger Au NPs, whereas smaller precursors led to the formation of smaller Au NPs. Using this strategy, Au NPs functionalized with nickel(II) nitriloacetate (Ni-NTA) group were prepared by a mixed-ligand approach. These Ni-NTA functionalized Au NPs exhibited specific binding to 6x-histidine-tagged Adenovirus serotype 12 knob proteins, demonstrating their utility in biomolecular labeling applications.
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Affiliation(s)
- Raymond P Briñas
- Biology Department, Brookhaven National Laboratory, Upton, New York 11973, USA
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Radziuk D, Skirtach A, Sukhorukov G, Shchukin D, Möhwald H. Stabilization of Silver Nanoparticles by Polyelectrolytes and Poly(ethylene glycol). Macromol Rapid Commun 2007. [DOI: 10.1002/marc.200600895] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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28
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Abstract
The emergence of synthesis strategies for the fabrication of nanosized contrast agents is anticipated to lead to advancements in understanding biological processes at the molecular level in addition to progress in the development of diagnostic tools and innovative therapies. Imaging agents such as fluorescent dye-doped silica nanoparticles, quantum dots and gold nanoparticles have overcome many of the limitations of conventional contrast agents (organic dyes) such as poor photostability, low quantum yield, insufficient in vitro and in vivo stability, etc. Such particulates are now being developed for absorbance and emission in the near infrared region, which is expected to allow for real time and deep tissue imaging via optical routes. Other efforts to facilitate deep tissue imaging with pre-existing technologies have lead to the development of multimodal nanoparticles which are both optical and MRI active. The main focus of this article is to provide an overview of properties and design of contrast agents such as dye-doped silica nanoparticles, quantum dots and gold nanoparticles for non-invasive bioimaging.
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Affiliation(s)
- Parvesh Sharma
- Particle Engineering Research Center and Material Science and Engineering, University of Florida, Gainesville 32611, USA
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Santra S, Dutta D, Walter GA, Moudgil BM. Fluorescent nanoparticle probes for cancer imaging. Technol Cancer Res Treat 2006; 4:593-602. [PMID: 16292879 DOI: 10.1177/153303460500400603] [Citation(s) in RCA: 113] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Optical imaging technique has strong potential for sensitive cancer diagnosis, particularly at the early stage of cancer development. This is a sensitive, non-invasive, non-ionizing (clinically safe) and relatively inexpensive technique. Cancer imaging with optical technique however greatly relies upon the use of sensitive and stable optical probes. Unlike the traditional organic fluorescent probes, fluorescent nanoparticle probes such as dye-doped nanoparticles and quantum dots (Qdots) are bright and photostable. Fluorescent nanoparticle probes are shown to be very effective for sensitive cancer imaging with greater success in the cellular level. However, cancer imaging in an in vivo setup has been recently realized. There are several challenges in developing fluorescent nanoparticle probes for in vivo cancer imaging applications. In this review, we will discuss various aspects of nanoparticle design, synthesis, surface functionalization for bioconjugation and cancer cell targeting. A brief overview of in vivo cancer imaging with Qdots will also be presented.
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Affiliation(s)
- Swadeshmukul Santra
- Nanoscience Technology Center, Department of Chemistry and Biomolecular Science Center, University of Central Florida, Research Pavilion, Orlando, 32826, USA.
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Xu J, Han X, Liu H, Hu Y. Synthesis of Monodisperse Gold Nanoparticles Stabilized by Gemini Surfactant in Reverse Micelles. J DISPER SCI TECHNOL 2005. [DOI: 10.1081/dis-200054588] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Control of nucleation and growth of gold nanoparticles in AOT/Span80/isooctane mixed reverse micelles. J SOLID STATE CHEM 2004. [DOI: 10.1016/j.jssc.2004.07.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Zhang X, Xie Y, Xu F, Tian X. Growth of BaWO4 fishbone-like nanostructures in w/o microemulsion. J Colloid Interface Sci 2004; 274:118-21. [PMID: 15120285 DOI: 10.1016/j.jcis.2004.01.048] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2003] [Accepted: 01/23/2004] [Indexed: 11/28/2022]
Abstract
BaWO(4) fishbone-like nanostructures with fourfold structural symmetry have been successfully grown in w/o microemulsion. The BaWO(4) fishbone-like nanostructures have four rows of nanorods, epitaxially grown on the stem and perpendicular to the stem. The obtained samples are characterized by means of XRD, TEM, HRTEM, and SEM. It is found that the water content has a large influence on the size of the product and the molar ratio between cations and anions plays an important role in the morphology of the product. It is assumed that site-selective surfactant adsorption may be responsible for the formation of the BaWO(4) fishbone-like nanostructures.
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Affiliation(s)
- Xu Zhang
- Structure Research Laboratory and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
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