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Yılmaz Ö, Koyuncu İ. Determination of copper and cobalt in different tea samples at trace levels by FAAS after preconcentration with a novel iron PAMAM-OH-encapsulated magnetic nanoparticle as SPE sorbent. ANAL SCI 2024; 40:633-641. [PMID: 38252257 DOI: 10.1007/s44211-023-00495-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 12/10/2023] [Indexed: 01/23/2024]
Abstract
Environmental contamination caused by heavy metals is a significant global concern. The presented study investigated the efficiency of iron PAMAM-OH encapsulated magnetic nanoparticles (Fe-MNP-G2-OH) as sorbent for the preconcentration of copper and cobalt from tea samples. High metal-chelating ethylenediamine core polyamidoethanol generation-2 (PAMAM-G2-OH) was encapsulated with iron oxide (Fe3O4) to synthesize the sorbent. Limit of detection (LOD) values for copper and cobalt extracted and detected by the developed Fe-MNP-G2-OH -SPE-FAAS method were 0.52 and 1.1 μg L-1, respectively. There were 230- and 101-fold improvement in detection limits for copper and cobalt, respectively, when compared to direct FAAS measurement. The percent recovery results for the analytes in green and black tea samples ranged from 93 to 107%, with low relative standard deviation (%RSD) values. The synthesis of nanoparticle was carried out through a unique method, which was characterized by thermogravimetric analysis (TGA), scanning electron microscope (SEM), and Fourier transform infrared spectroscopy (FTIR) methods. The analytical results demonstrated the applicability and effectiveness of Fe-MNP-G2-OH nanoparticles on the preconcentration of copper and cobalt from tea samples and the developed method is suitable for the trace detection of heavy metals by FAAS method. To the best our knowledge, this is the first study where copper and cobalt in green and black tea samples were extracted by Fe-MNP-G2-OH adsorbent and precipitation of the adsorbent during its synthesis was carried out in acetone medium rather than aqueous one.
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Affiliation(s)
- Özge Yılmaz
- Faculty of Arts and Sciences, Department of Chemistry, Yıldız Technical University, Esenler, İstanbul, Türkiye.
| | - İkbal Koyuncu
- Faculty of Arts and Sciences, Department of Chemistry, Yıldız Technical University, Esenler, İstanbul, Türkiye
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2
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Ye J, Li C, Yao X, Jin M, Wan D. Customizing a Hyperbranched Ligand Confers Supported Platinum Nanoclusters with Unexpected Catalytic Activity toward the Reduction of 4-Nitrophenol. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023. [PMID: 38038684 DOI: 10.1021/acs.langmuir.3c02884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
We here show that a dendritic molecule combined with ligand merit confers supported platinum nanoclusters (PtNCs) with unprecedented catalytic performance. Branched polyethylenimine (PEI, Mn = 2000 D) patched on a porous bead is modified with 2-(diphenylphosphino)benzaldehyde (dppb) before being used to mediate a platinum nanoparticle/nanocluster (Pt0). The catalytic activity of Pt0 toward the reduction of 4-nitrophenol (4-NP) is evaluated from the parameter of Pt-normalized rate constant (kc). Optimization of the dppb level along with transformation of the PEI hydrogens into diol or trimethylammonium groups imparts supported Pt0 unprecedented activity (kc = 19.2 L mmol-1 s-1 and turnover frequency (TOF) = 1041 h-1). The supported Pt0 at an extremely low dosage of 0.1 ppm promotes 98% conversion of 4-NP within minutes and is well recyclable. The striking catalytic activity is attributed to the combination of orthogonal ligand properties such as weak ligand nature, catalyst-activating ability, excellent substrate affinity, and effect on PtNC-size mediation of the ligand.
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Affiliation(s)
- Jingyun Ye
- Department of Polymer Materials, School of Materials Science and Engineering, Tongji University, 4800 Cao-an Road, Shanghai 201804, China
| | - Chenhui Li
- Department of Polymer Materials, School of Materials Science and Engineering, Tongji University, 4800 Cao-an Road, Shanghai 201804, China
| | - Xiaoqiu Yao
- Department of Polymer Materials, School of Materials Science and Engineering, Tongji University, 4800 Cao-an Road, Shanghai 201804, China
| | - Ming Jin
- Department of Polymer Materials, School of Materials Science and Engineering, Tongji University, 4800 Cao-an Road, Shanghai 201804, China
| | - Decheng Wan
- Department of Polymer Materials, School of Materials Science and Engineering, Tongji University, 4800 Cao-an Road, Shanghai 201804, China
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3
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Ashraf M, Ahmad MS, Inomata Y, Ullah N, Tahir MN, Kida T. Transition metal nanoparticles as nanocatalysts for Suzuki, Heck and Sonogashira cross-coupling reactions. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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4
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Alyari M, Scott RWJ. Au Cluster-Cored Dendrimers Fabricated by Direct Synthesis and Post-functionalization Routes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:3212-3222. [PMID: 35245069 DOI: 10.1021/acs.langmuir.1c03291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The use of dendrimers and dendrons as stabilizing agents for metal nanoparticles and nanoclusters has captured interest in both the biomedicine and catalysis fields. Herein, we describe the synthesis of Au cluster-cored dendrimers by either direct synthesis or multi-step functionalization pathways. Direct synthesis of Au cluster-cored dendrimers was performed by the Brust-Schiffrin method using cystamine core poly(amidoamine) (PAMAM) dendrons as capping agents. Alternatively, a divergent approach to make nanoclusters with dendritic branching groups by functionalizing glycine-cystamine Au clusters was also carried out. This synthesis involved sequential Michael addition reactions of methyl acrylate followed by a subsequent amide coupling reaction with ethylenediamine on amine-terminated Au nanoclusters to form dendritic architectures around the Au core. The chemical structure of the ligands was confirmed by proton nuclear magnetic resonance after each functionalization reaction, and the cluster size was characterized by transmission electron microscopy. Au cluster-cored dendrimers with amine or ester terminal groups on the surface were produced. The resulting amine- and ester-terminated Au cluster-cored dendrimers synthesized by the divergent method are stable in solution and in the presence of excess reducing agent. In contrast, amine-terminated Au cluster-cored dendrimers synthesized by direct synthesis undergo aggregation in solution over time as a result of the high reactivity of the surface, while ester-terminated Au cluster-cored dendrimers formed by direct synthesis have much larger core sizes than seen using the divergent approach. Finally, the catalytic activities of these clusters for 4-nitrophenol reductions have been investigated. Cluster-cored dendrimers formed by direct synthesis had larger core sizes and higher catalytic activities than those formed by the divergent approach, which is likely due to the poor passivation of the Au surface for the directly synthesized clusters. Furthermore, Au cluster-cored dendrimers with less sterically bulky dendrons showed higher catalytic activities.
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Affiliation(s)
- Maryam Alyari
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Robert W J Scott
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
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5
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Karakhanov E, Maximov A, Zolotukhina A. Heterogeneous Dendrimer-Based Catalysts. Polymers (Basel) 2022; 14:981. [PMID: 35267800 PMCID: PMC8912888 DOI: 10.3390/polym14050981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 02/04/2023] Open
Abstract
The present review compiles the advances in the dendritic catalysis within the last two decades, in particular concerning heterogeneous dendrimer-based catalysts and their and application in various processes, such as hydrogenation, oxidation, cross-coupling reactions, etc. There are considered three main approaches to the synthesis of immobilized heterogeneous dendrimer-based catalysts: (1) impregnation/adsorption on silica or carbon carriers; (2) dendrimer covalent grafting to various supports (silica, polystyrene, carbon nanotubes, porous aromatic frameworks, etc.), which may be performed in a divergent (as a gradual dendron growth on the support) or convergent way (as a grafting of whole dendrimer to the support); and (3) dendrimer cross-linking, using transition metal ions (resulting in coordination polymer networks) or bifunctional organic linkers, whose size, polarity, and rigidity define the properties of the resulted material. Additionally, magnetically separable dendritic catalysts, which can be synthesized using the three above-mentioned approaches, are also considered. Dendritic catalysts, synthesized in such ways, can be stored as powders and be easily separated from the reaction medium by filtration/centrifugation as traditional heterogeneous catalysts, maintaining efficiency as for homogeneous dendritic catalysts.
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Affiliation(s)
- Eduard Karakhanov
- Department of Petroleum Chemistry and Organic Catalysis, Moscow State University, 119991 Moscow, Russia;
| | - Anton Maximov
- Institute of Petrochemical Synthesis RAS, 119991 Moscow, Russia;
| | - Anna Zolotukhina
- Institute of Petrochemical Synthesis RAS, 119991 Moscow, Russia;
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Abstract
Abstract
The field of nanotechnology is being greatly explored by cosmetic industries in order to improve the efficacy of cosmetic products. The increased use of nanomaterials in the field of cosmetics can have two sides as health-related benefits and detrimental effects. This review mainly seeks the pros and cons of the use of nanomaterials in cosmetics along with some examples of nanomaterials that are widely used in cosmetic industries along with different types of nanotechnology-based cosmetic products. The benefits of nanomaterials in cosmetic formulations are huge. Moreover the study regarding the toxic effects on the health also equally matters. This review gives a brief outline of the advantages as well as disadvantages of nanotechnology in cosmetics.
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7
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Ulloa J, Barberá J, Serrano JL. Controlled Growth of Dendrimer-Coated Gold Nanoparticles: A Solvent-Free Process in Mild Conditions. ACS OMEGA 2021; 6:348-357. [PMID: 33458486 PMCID: PMC7807749 DOI: 10.1021/acsomega.0c04662] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 10/26/2020] [Indexed: 05/16/2023]
Abstract
Monodisperse dendrimer-coated gold nanoparticles with a spherical shape have been obtained by direct reduction of HAuCl4 with sodium borohydride in the presence of dodecanethiol as a stabilizer and subsequent functionalization by ligand exchange reaction with polybenzylic thiolated dendrons. The substitution pattern of the dendrimeric units plays a fundamental role in the rate of the functionalization exchange process and consequently conditions the size and the polydispersity of the NPs obtained. An ulterior growth process occurs by thermal stimuli (150 °C) in a solvent-free environment. This method, carried out in mild conditions, allows the formation of highly monodisperse gold NPs with different sizes for different time reactions, and we discuss the mechanisms involved in this process. Finally, we demonstrate the chemical composition and stability of our compounds by structural, thermal, and chemical characterization of the samples before and after thermal treatment.
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Affiliation(s)
- José
Antonio Ulloa
- Instituto
de Nanociencia y Materiales de Aragón (INMA), Departamento
de Química Orgánica, Universidad
de Zaragoza-CSIC, C/Pedro
Cerbuna 12, 50009 Zaragoza, Spain
- Departamento
de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Casilla 160-C Concepción, Chile
| | - Joaquín Barberá
- Instituto
de Nanociencia y Materiales de Aragón (INMA), Departamento
de Química Orgánica, Universidad
de Zaragoza-CSIC, C/Pedro
Cerbuna 12, 50009 Zaragoza, Spain
| | - José Luis Serrano
- Instituto
de Nanociencia y Materiales de Aragón (INMA), Departamento
de Química Orgánica, Universidad
de Zaragoza-CSIC, C/Pedro
Cerbuna 12, 50009 Zaragoza, Spain
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8
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Tu X, Tan X, Qi X, Huang A, Ling F, Wang G. Proteome interrogation using gold nanoprobes to identify targets of arctigenin in fish parasites. J Nanobiotechnology 2020; 18:32. [PMID: 32070333 PMCID: PMC7027246 DOI: 10.1186/s12951-020-00591-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Accepted: 02/06/2020] [Indexed: 11/29/2022] Open
Abstract
Gold nanoparticles (GNPs) are one of the most widely used nanomaterials in various fields. Especially, the unique chemical and physical properties make them as the promising candidates in drug target identification, unfortunately, little is known about their application in parasites. In this paper, GNPs were employed as new solid support to identify drug targets of natural bioactive compound arctigenin (ARG) against fish monogenean parasite Gyrodactylus kobayashi. Before target identification, GNPs with ARG on the surface showed the ability to enter the live parasites even the nucleus or mitochondria, which made the bound compounds capable of contacting directly with target proteins located anywhere of the parasites. At the same time, chemically modified compound remained the anthelminthic efficacy against G. kobayashii. The above results both provide assurance on the reliability of using GNPs for drug target-binding specificity. Subsequently, by interrogating the cellular proteome in parasite lysate, myosin-2 and UNC-89 were identified as the potential direct target proteins of ARG in G. kobayashii. Moreover, results of RNA-seq transcriptomics and iTRAQ proteomics indicated that myosin-2 expressions were down-regulated after ARG bath treatment both in transcript and protein levels, but for UNC-89, only in mRNA level. Myosin-2 is an important structural muscle protein expressed in helminth tegument and its identification as our target will enable further inhibitor optimization towards future drug discovery. Furthermore, our findings demonstrate the power of GNPs to be readily applied to other parasite drugs of unknown targets, facilitating more broadly therapeutic drug design in any pathogen or disease model.
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Affiliation(s)
- Xiao Tu
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, People's Republic of China.,School of Life Sciences, South China Normal University, Guangzhou, 510631, People's Republic of China
| | - Xiaoping Tan
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, People's Republic of China
| | - Xiaozhou Qi
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, People's Republic of China
| | - Aiguo Huang
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, People's Republic of China
| | - Fei Ling
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, People's Republic of China.
| | - Gaoxue Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, People's Republic of China.
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9
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Monti GA, Correa NM, Falcone RD, Silbestri GF, Moyano F. Gold Nanoparticles Stabilized by Sulfonated‐Imidazolium Salts as Promising Catalyst in Water. ChemistrySelect 2019. [DOI: 10.1002/slct.201903396] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gustavo A. Monti
- Instituto para el desarrollo agroindustrial y de la salud, IDAS(CONICET – UNRC.) Departamento de Química. Universidad Nacional de Río Cuarto. Agencia Postal # 3. C.P. X5804BYA Río Cuarto Argentina
| | - N. Mariano Correa
- Instituto para el desarrollo agroindustrial y de la salud, IDAS(CONICET – UNRC.) Departamento de Química. Universidad Nacional de Río Cuarto. Agencia Postal # 3. C.P. X5804BYA Río Cuarto Argentina
| | - R. Darío Falcone
- Instituto para el desarrollo agroindustrial y de la salud, IDAS(CONICET – UNRC.) Departamento de Química. Universidad Nacional de Río Cuarto. Agencia Postal # 3. C.P. X5804BYA Río Cuarto Argentina
| | - Gustavo F. Silbestri
- Instituto de Química del Sur (INQUISUR)Departamento de Química, Universidad Nacional del Sur (UNS)-CONICET Av. Alem 1253 B8000CPB Bahía Blanca Argentina
| | - Fernando Moyano
- Instituto para el desarrollo agroindustrial y de la salud, IDAS(CONICET – UNRC.) Departamento de Química. Universidad Nacional de Río Cuarto. Agencia Postal # 3. C.P. X5804BYA Río Cuarto Argentina
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10
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Sohail MI, Waris AA, Ayub MA, Usman M, Zia ur Rehman M, Sabir M, Faiz T. Environmental application of nanomaterials: A promise to sustainable future. ENGINEERED NANOMATERIALS AND PHYTONANOTECHNOLOGY: CHALLENGES FOR PLANT SUSTAINABILITY 2019. [DOI: 10.1016/bs.coac.2019.10.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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11
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Elbert KC, Lee JD, Wu Y, Murray CB. Improved Chemical and Colloidal Stability of Gold Nanoparticles through Dendron Capping. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:13333-13338. [PMID: 30350692 DOI: 10.1021/acs.langmuir.8b02960] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nanoparticle (NP) stability is imperative for commercialization of nanotechnology. In this study, we compare the stability of Au NPs with surfaces functionalized with oleylamine, dodecanethiol, and two dendritic ligands of different generations. Dendrimer ligands provide a significant increase in the chemical stability of Au NPs when analyzed by cyanide-induced NP decomposition as well as an investigation into their colloidal stability at ambient conditions. These results were supported by absorption measurements, transmission electron microscopy, thermogravimetric analysis, nuclear magnetic resonance, and small-angle transmission X-ray scattering and show that dendrimers play a key role in improving the chemical and colloidal stability of NPs.
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12
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Li X, Kono K. Functional dendrimer-gold nanoparticle hybrids for biomedical applications. POLYM INT 2018. [DOI: 10.1002/pi.5583] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xiaojie Li
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education; School of Chemical and Material Engineering, Jiangnan University; Wuxi China
| | - Kenji Kono
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; Osaka Japan
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13
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Liu AT, Berlin JM. Impact of Cross-Linker Valency on Gold Nanoparticle Aggregate Formation and Cellular Uptake. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:14358-14365. [PMID: 29166557 PMCID: PMC8995163 DOI: 10.1021/acs.langmuir.7b03524] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Synthesis of spherical, biocompatible nanoparticle aggregates using a small molecular cross-linker is a simple and flexible approach for the controlled assembly of gold nanoparticles. This strategy can be extended to a variety of cross-linkers, making it possible to the test the effect of cross-linker properties on aggregate formation and physicochemical properties. Here, we synthesized aggregates using a series of structurally homologous cross-linkers with differing valencies. These aggregates have the same size, morphology, surface charge, surface coating, and stability in salt, media, and low pH conditions, but they differ in their stability to cyanide etching and uptake by cells. This highlights the fine-tuning of nanoparticle aggregate properties that can be achieved by using small-molecule cross-linkers.
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Affiliation(s)
- Alice T Liu
- Department of Molecular Medicine, Irell and Manella Graduate School of Biological Sciences, Beckman Research Institute, City of Hope National Medical Center , Duarte, California 91010, United States
| | - Jacob M Berlin
- Department of Molecular Medicine, Irell and Manella Graduate School of Biological Sciences, Beckman Research Institute, City of Hope National Medical Center , Duarte, California 91010, United States
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14
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Liu P. Preparation of Dendrimer-Like or Hyperbranched Polymers Grafted Inorganic Nanoparticle: A Literature Review. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/14328917.2005.11784912] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Mori T, Hegmann T. Determining the composition of gold nanoparticles: a compilation of shapes, sizes, and calculations using geometric considerations. JOURNAL OF NANOPARTICLE RESEARCH : AN INTERDISCIPLINARY FORUM FOR NANOSCALE SCIENCE AND TECHNOLOGY 2016; 18:295. [PMID: 27766020 PMCID: PMC5047942 DOI: 10.1007/s11051-016-3587-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 09/03/2016] [Indexed: 05/02/2023]
Abstract
ABSTRACT Size, shape, overall composition, and surface functionality largely determine the properties and applications of metal nanoparticles. Aside from well-defined metal clusters, their composition is often estimated assuming a quasi-spherical shape of the nanoparticle core. With decreasing diameter of the assumed circumscribed sphere, particularly in the range of only a few nanometers, the estimated nanoparticle composition increasingly deviates from the real composition, leading to significant discrepancies between anticipated and experimentally observed composition, properties, and characteristics. We here assembled a compendium of tables, models, and equations for thiol-protected gold nanoparticles that will allow experimental scientists to more accurately estimate the composition of their gold nanoparticles using TEM image analysis data. The estimates obtained from following the routines described here will then serve as a guide for further analytical characterization of as-synthesized gold nanoparticles by other bulk (thermal, structural, chemical, and compositional) and surface characterization techniques. While the tables, models, and equations are dedicated to gold nanoparticles, the composition of other metal nanoparticle cores with face-centered cubic lattices can easily be estimated simply by substituting the value for the radius of the metal atom of interest. GRAPHICAL ABSTRACT
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Affiliation(s)
- Taizo Mori
- Chemical Physics Interdisciplinary Program, Liquid Crystal Institute, Kent State University, Kent, OH 44242-0001 USA
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, 305-0044 Japan
| | - Torsten Hegmann
- Chemical Physics Interdisciplinary Program, Liquid Crystal Institute, Kent State University, Kent, OH 44242-0001 USA
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16
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Daneshvar A, Moghadam M, Tangestaninejad S, Mirkhani V, Mohammadpoor-Baltork I, Khalili A. Ruthenium Hydride Complex Supported on Gold Nanoparticle Cored Triazine Dendrimers for C–C Coupling Reactions. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00163] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anahita Daneshvar
- Department of Chemistry,
Catalysis Division, University of Isfahan, Isfahan 81746-73441, Iran
| | - Majid Moghadam
- Department of Chemistry,
Catalysis Division, University of Isfahan, Isfahan 81746-73441, Iran
| | - Shahram Tangestaninejad
- Department of Chemistry,
Catalysis Division, University of Isfahan, Isfahan 81746-73441, Iran
| | - Valiollah Mirkhani
- Department of Chemistry,
Catalysis Division, University of Isfahan, Isfahan 81746-73441, Iran
| | | | - Akram Khalili
- Department of Chemistry,
Catalysis Division, University of Isfahan, Isfahan 81746-73441, Iran
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17
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Tomalia DA, Khanna SN. A Systematic Framework and Nanoperiodic Concept for Unifying Nanoscience: Hard/Soft Nanoelements, Superatoms, Meta-Atoms, New Emerging Properties, Periodic Property Patterns, and Predictive Mendeleev-like Nanoperiodic Tables. Chem Rev 2016; 116:2705-74. [DOI: 10.1021/acs.chemrev.5b00367] [Citation(s) in RCA: 166] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Donald A. Tomalia
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284, United States
- National Dendrimer & Nanotechnology Center, NanoSynthons LLC, 1200 North Fancher Avenue, Mt. Pleasant, Michigan 48858, United States
| | - Shiv N. Khanna
- Department
of Physics, Virginia Commonwealth University, Richmond, Virginia 23284, United States
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18
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Galán M, Fornaguera C, Ortega P, Calderó G, Lorente R, Jimenez JL, Mata JDL, Muñoz-Fernandez MA, Solans C, Gómez R. Dendronized PLGA nanoparticles with anionic carbosilane dendrons as antiviral agents against HIV infection. RSC Adv 2016. [DOI: 10.1039/c6ra13461k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
PLGA nanoparticles functionalized with carbosilane anionic dendrons have been prepared. The biocompatibility and HIV activity have been explored in PBMC and HEC-1A cells. The results indicate that these systems are powerful anti-HIV agents.
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19
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Das P, Sarmah PP, Borah BJ, Saikia L, Dutta DK. Aromatic ring hydrogenation catalysed by nanoporous montmorillonite supported Ir(0)-nanoparticle composites under solvent free conditions. NEW J CHEM 2016. [DOI: 10.1039/c5nj03030g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ir nanoparticles supported on nanoporous montmorillonite clay showing efficient catalytic activity for hydrogenation of aromatic compounds.
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Affiliation(s)
- Prabin Das
- Materials Science Division
- CSIR-North East Institute of Science and Technology
- Jorhat 785006
- India
| | - Podma Pollov Sarmah
- Materials Science Division
- CSIR-North East Institute of Science and Technology
- Jorhat 785006
- India
| | - Bibek Jyoti Borah
- Materials Science Division
- CSIR-North East Institute of Science and Technology
- Jorhat 785006
- India
| | - Lakshi Saikia
- Materials Science Division
- CSIR-North East Institute of Science and Technology
- Jorhat 785006
- India
| | - Dipak Kumar Dutta
- Materials Science Division
- CSIR-North East Institute of Science and Technology
- Jorhat 785006
- India
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20
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Lu F, Didier A. Catalytically Active Palladium Nanoparticle-Cored Ferrocenyl-Terminated Dendrimers. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501103] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Jishkariani D, Diroll BT, Cargnello M, Klein DR, Hough LA, Murray CB, Donnio B. Dendron-Mediated Engineering of Interparticle Separation and Self-Assembly in Dendronized Gold Nanoparticles Superlattices. J Am Chem Soc 2015; 137:10728-34. [PMID: 26258660 DOI: 10.1021/jacs.5b06306] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Self-assembly of nanoparticles into designed structures with controlled interparticle separations is of crucial importance for the engineering of new materials with tunable functions and for the subsequent bottom-up fabrication of functional devices. In this study, a series of lipophilic, highly flexible, disulfide dendritic wedges (generations 0-4), based on 2,2-bis(hydroxymethyl)propionic acid, was designed to bind Au nanoparticles with a thiolate bond. By controlling the solvent evaporation rate, the corresponding dendron-capped Au hybrids were found to self-organize into hexagonal close-packed (hcp) superlattices. The interparticular spacing was progressively varied from 2.2 to 6.3 nm with increasing dendritic generation, covering a range that is intermediate between commercial ligands and DNA-based ligand shells. Dual mixtures made from some of these dendronized hybrids (i.e., same inner core size but different dendritic covering) yielded binary superlattice structures of unprecedented single inorganic components, which are isostructural with NaZn13 and CaCu5 crystals.
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Affiliation(s)
- Davit Jishkariani
- Department of Chemistry, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States.,Complex Assemblies of Soft Matter Laboratory (COMPASS), UMI 3254, CNRS-Solvay-University of Pennsylvania, CRTB , 350 George Patterson Boulevard, Bristol, Pennsylvania 19007, United States
| | - Benjamin T Diroll
- Department of Chemistry, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States
| | - Matteo Cargnello
- Department of Chemistry, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States
| | - Dahlia R Klein
- Department of Chemistry, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States
| | - Lawrence A Hough
- Complex Assemblies of Soft Matter Laboratory (COMPASS), UMI 3254, CNRS-Solvay-University of Pennsylvania, CRTB , 350 George Patterson Boulevard, Bristol, Pennsylvania 19007, United States
| | - Christopher B Murray
- Department of Chemistry, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States.,Department of Materials Science and Engineering, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States
| | - Bertrand Donnio
- Complex Assemblies of Soft Matter Laboratory (COMPASS), UMI 3254, CNRS-Solvay-University of Pennsylvania, CRTB , 350 George Patterson Boulevard, Bristol, Pennsylvania 19007, United States.,Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504, CNRS-Université de Strasbourg , 23 rue du Loess, BP43, Strasbourg 67034 Cedex 2, France
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Brunetti V, Bouchet LM, Strumia MC. Nanoparticle-cored dendrimers: functional hybrid nanocomposites as a new platform for drug delivery systems. NANOSCALE 2015; 7:3808-3816. [PMID: 25566989 DOI: 10.1039/c4nr04438j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Nanoparticle-cored dendrimers (NCDs) are now offering themselves as versatile carriers because of their colloidal stability, tunable membrane properties and ability to encapsulate or integrate a broad range of drugs and molecules. This kind of hybrid nanocomposite aims to combine the advantages of stimuli-responsive dendritic coatings, in order to regulate the drug release behaviour under different conditions and improve the biocompatibility and in vivo half-time circulation of the inorganic nanoparticles. Size, surface chemistry and shape are key nanocarrier properties to evaluate. Here, we have reviewed the most recent advances of NCDs in drug delivery systems, compared their behaviour with non-dendritic stabilized nanoparticles and highlighted their challenges and promising applications in the future.
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Affiliation(s)
- V Brunetti
- Departamento de Fisicoquímica (INFIQC, CONICET-UNC), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, (5016) Córdoba, Argentina
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23
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Mitra P, Chakraborty PK, Saha P, Ray P, Basu S. Antibacterial efficacy of acridine derivatives conjugated with gold nanoparticles. Int J Pharm 2014; 473:636-43. [DOI: 10.1016/j.ijpharm.2014.07.051] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 07/25/2014] [Accepted: 07/26/2014] [Indexed: 01/23/2023]
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24
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Sung S, Holmes H, Wainwright L, Toscani A, Stasiuk GJ, White AJP, Bell JD, Wilton-Ely JDET. Multimetallic Complexes and Functionalized Gold Nanoparticles Based on a Combination of d- and f-Elements. Inorg Chem 2014; 53:1989-2005. [DOI: 10.1021/ic401936w] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Simon Sung
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Holly Holmes
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Luke Wainwright
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Anita Toscani
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Graeme J. Stasiuk
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Andrew J. P. White
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Jimmy D. Bell
- Metabolic and Molecular Imaging Group,
MRC Clinical Sciences Centre, Imperial College London, Hammersmith Hospital, London W12 0NN, United Kingdom
| | - James D. E. T. Wilton-Ely
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
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25
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Takahashi M, Imaoka T, Hongo Y, Yamamoto K. Formation of a Pt12Cluster by Single-Atom Control That Leads to Enhanced Reactivity: Hydrogenation of Unreactive Olefins. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302860] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Takahashi M, Imaoka T, Hongo Y, Yamamoto K. Formation of a Pt12 cluster by single-atom control that leads to enhanced reactivity: hydrogenation of unreactive olefins. Angew Chem Int Ed Engl 2013; 52:7419-21. [PMID: 23729370 DOI: 10.1002/anie.201302860] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2013] [Indexed: 11/10/2022]
Abstract
A platinum subnanocluster catalyst composed of 12 atoms was synthesized using a phenylazomethine dendrimer, which can assemble twelve PtCl4 units by stepwise complexation, followed by reduction to Pt(0). Unreactive olefins that were not activated by conventional 2 nm Pt nanoparticles were successfully hydrogenated by the subnanocluster. EWG = electron-withdrawing group.
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Affiliation(s)
- Masaki Takahashi
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
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27
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Mizugaki T, Kibata T, Mitsudome T, Jitsukawa K, Kaneda K. Size Selective Synthesis of Subnano Pd Clusters Using Core [Poly(propylene imine)]–Shell [Poly(benzyl ether)] Hybrid Dendrimers. CHEM LETT 2013. [DOI: 10.1246/cl.2013.313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tomoo Mizugaki
- Graduate School of Engineering Science, Osaka University
| | | | | | | | - Kiyotomi Kaneda
- Graduate School of Engineering Science, Osaka University
- Research Center for Solar Energy Chemistry, Osaka University
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28
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29
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Fox MA. Photophysical probes for multiple-redox and multiple-excited-state interactions in molecular aggregates. Acc Chem Res 2012; 45:1875-86. [PMID: 23004222 DOI: 10.1021/ar3000037] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Photosynthesis takes place through a highly efficient series of energy, electron, and proton transfers initiated by absorption of one or more photons within the visible region of the solar spectrum. Because of the presence of multiple chromophores needed for effective light harvesting, extinction coefficients must be very high. The absorbing multiunit array is held within a rigidly arranged structure that facilitates each electron hop. A fully artificial, yet biomimetic, alternative to photosynthesis that produces fuels directly and efficiently from sunlight and simple low molecular weight molecules would change the world. Achieving this goal requires a detailed understanding of the mechanisms of the key steps of the complex chemical and photochemical processes taking place in natural photosynthesis. One of these mechanisms relies on light harvesting to initiate multiple-step sequences to obtain combustible molecules suitable for burning. In particular, we are devising and testing photophysical models with characteristics that facilitate multiple electron transfers within a single aggregate and are directly relevant to light harvesting. We focus on structural features that promote photoinduced electron transfer at high dye densities, placed for optimal solar utilization and catalysis. The reaction producing oxygen is further complicated by the need for four electrons to complete the sequence, even though the first initiation step is presumably absorption of a single photon. Therefore we explore steps that accumulate charge or have the potential to do so. We also emphasize the synthesis of model systems that probe the complexity of individual steps. This Account examines the factors that influence the efficiency of electron redistribution in multiple-dye, multiple-excited-state, and multiple-redox equivalent arrays. Such knowledge will allow us to optimize the efficiency of electron migration and may contribute to a better understanding of multiple-equivalent light harvesting events by which photosynthetic energy storage takes place.
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Affiliation(s)
- Marye Anne Fox
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Road, La Jolla, California 92305, United States
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30
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Paez JI, Coronado EA, Strumia MC. Preparation of controlled gold nanoparticle aggregates using a dendronization strategy. J Colloid Interface Sci 2012; 384:10-21. [DOI: 10.1016/j.jcis.2012.06.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 06/17/2012] [Accepted: 06/18/2012] [Indexed: 11/25/2022]
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31
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Ghann WE, Aras O, Fleiter T, Daniel MC. Syntheses and characterization of lisinopril-coated gold nanoparticles as highly stable targeted CT contrast agents in cardiovascular diseases. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:10398-10408. [PMID: 22702239 DOI: 10.1021/la301694q] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Lisinopril was used as the targeting moiety to prepare gold nanoparticle-based functional CT contrast agents. Pure lisinopril, thioctic acid-lisinopril conjugate, and reduced thioctic acid-lisinopril conjugate were used to obtain GNP-Lis, GNP-TA-Lis, and GNP-RTA-Lis, respectively, via ligand exchange reaction on citrate-coated gold nanoparticles (GNPs). These lisinopril-decorated GNPs were fully characterized, and their chemical stabilities in biological relevant media and in high salt concentration were compared. Their relative stabilities toward lyophilization and against cyanide-induced decomposition were also investigated. Because of their higher stability, GNP-TA-Lis were used to assess the targeting of angiotensin converting enzyme (ACE) using X-ray computed tomography (CT). The images obtained displayed high contrast in the region of the lungs and heart, clearly indicating the targeting of ACE, whose overexpression is associated with development of cardiac and pulmonary fibrosis. Thus, the new nanoprobes prepared here will serve as very useful tools for the monitoring of cardiovascular pathophysiologies using CT imaging.
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32
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Kumar VKR, Krishnakumar S, Gopidas KR. Synthesis, Characterization and Catalytic Applications of Palladium Nanoparticle-Cored Dendrimers Stabilized by Metal-Carbon Bonds. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101749] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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33
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Rousseau G, Fensterbank H, Baczko K, Cano M, Allard E, Larpent C. Azido-Coated Nanoparticles: A Versatile Clickable Platform for the Preparation of Fluorescent Polystyrene Core–PAMAM Shell Nanoparticles. Macromolecules 2012. [DOI: 10.1021/ma300126h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Guillaume Rousseau
- Institut Lavoisier de Versailles
UMR-CNRS 8180, Université de Versailles-Saint-Quentin-en-Yvelines, 45 avenue des Etats-Unis, 78035 Versailles cedex, France
| | - Hélène Fensterbank
- Institut Lavoisier de Versailles
UMR-CNRS 8180, Université de Versailles-Saint-Quentin-en-Yvelines, 45 avenue des Etats-Unis, 78035 Versailles cedex, France
| | - Krystyna Baczko
- Institut Lavoisier de Versailles
UMR-CNRS 8180, Université de Versailles-Saint-Quentin-en-Yvelines, 45 avenue des Etats-Unis, 78035 Versailles cedex, France
| | - Manuel Cano
- Institut Lavoisier de Versailles
UMR-CNRS 8180, Université de Versailles-Saint-Quentin-en-Yvelines, 45 avenue des Etats-Unis, 78035 Versailles cedex, France
| | - Emmanuel Allard
- Institut Lavoisier de Versailles
UMR-CNRS 8180, Université de Versailles-Saint-Quentin-en-Yvelines, 45 avenue des Etats-Unis, 78035 Versailles cedex, France
| | - Chantal Larpent
- Institut Lavoisier de Versailles
UMR-CNRS 8180, Université de Versailles-Saint-Quentin-en-Yvelines, 45 avenue des Etats-Unis, 78035 Versailles cedex, France
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34
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Dendronization: A Useful Synthetic Strategy to Prepare Multifunctional Materials. Polymers (Basel) 2012. [DOI: 10.3390/polym4010355] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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35
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Friederici M, Angurell I, Rossell O, Seco M, Divins NJ, Llorca J. Facile Synthesis of Palladium Nanoparticles Protected with Alkanethiolates Functionalized with Organometallic Fragments. Organometallics 2012. [DOI: 10.1021/om201109d] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Mario Friederici
- Departament de Química
Inorgànica, Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain
| | - Inmaculada Angurell
- Departament de Química
Inorgànica, Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain
| | - Oriol Rossell
- Departament de Química
Inorgànica, Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain
| | - Miquel Seco
- Departament de Química
Inorgànica, Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain
| | - Núria J. Divins
- Institut de Tècniques
Energètiques i Centre de Recerca en Nanoenginyeria, Universitat Politècnica de Catalunya, Diagonal,
647, 08028 Barcelona, Spain
| | - Jordi Llorca
- Institut de Tècniques
Energètiques i Centre de Recerca en Nanoenginyeria, Universitat Politècnica de Catalunya, Diagonal,
647, 08028 Barcelona, Spain
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36
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Zheng J, Lin S, Zhu X, Jiang B, Yang Z, Pan Z. Reductant-directed formation of PS–PAMAM-supported gold nanoparticles for use as highly active and recyclable catalysts for the aerobic oxidation of alcohols and the homocoupling of phenylboronic acids. Chem Commun (Camb) 2012; 48:6235-7. [DOI: 10.1039/c2cc31948a] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Bronstein LM, Shifrina ZB. Dendrimers as encapsulating, stabilizing, or directing agents for inorganic nanoparticles. Chem Rev 2011; 111:5301-44. [PMID: 21718045 DOI: 10.1021/cr2000724] [Citation(s) in RCA: 250] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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38
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Deng S, Fulghum TM, Krueger G, Patton D, Park JY, Advincula RC. Hybrid Gold-Nanoparticle-Cored Conjugated Thiophene Dendrimers: Synthesis, Characterization, and Energy-Transfer Studies. Chemistry 2011; 17:8929-40. [DOI: 10.1002/chem.201100246] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2011] [Indexed: 11/09/2022]
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39
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Danda C, Ponnapati R, Dutta P, Taranekar P, Patterson G, Advincula RC. Gold Nanoparticle/Carbazole Dendron Hybrids. MACROMOL CHEM PHYS 2011. [DOI: 10.1002/macp.201100051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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40
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Gonzàlez de Rivera F, Rodríguez LI, Rossell O, Seco M, Divins NJ, Casanova I, Llorca J. Carbosilane dendrons as stabilizing agents for the formation of gold nanoparticles. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.12.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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41
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Nakamula I, Yamanoi Y, Imaoka T, Yamamoto K, Nishihara H. A Uniform Bimetallic Rhodium/Iron Nanoparticle Catalyst for the Hydrogenation of Olefins and Nitroarenes. Angew Chem Int Ed Engl 2011; 50:5830-3. [DOI: 10.1002/anie.201102836] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2011] [Indexed: 11/09/2022]
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42
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Nakamula I, Yamanoi Y, Imaoka T, Yamamoto K, Nishihara H. A Uniform Bimetallic Rhodium/Iron Nanoparticle Catalyst for the Hydrogenation of Olefins and Nitroarenes. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201102836] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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43
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Ratheesh Kumar VK, Gopidas KR. Palladium nanoparticle-cored G1-dendrimer stabilized by carbon–Pd bonds: synthesis, characterization and use as chemoselective, room temperature hydrogenation catalyst. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.04.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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Cho TJ, Zangmeister RA, MacCuspie RI, Patri AK, Hackley VA. Newkome-type dendron stabilized gold nanoparticles: Synthesis, reactivity, and stability. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2011; 23:2665-2676. [PMID: 21686078 PMCID: PMC3114632 DOI: 10.1021/cm200591h] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We report the synthesis and evaluation of four Newkome-type dendrons, G1-COOH, G2-COOH, SH-G1-COOH, and TA-G1-COOH, and their respective gold-dendron conjugates, where GX represents the generation number. G1- and G2-COOH are 2-directional symmetric dendrons that have cystamine cores containing a disulfide group. SH-G1-COOH was prepared by treatment of G1-COOH with dithioerythritol to yield a free thiol group to replace the disulfide linkage. TA-G1-COOH has a thioctic acid moiety, which is a 5-member ring containing a disulfide group that cleaves to produce two anchoring thiols to bond with the gold surface. All dendrons have peripheral carboxylate groups to afford hydrophilicity and functionality. Gold nanoparticle conjugates were prepared by reaction of each dendron solution with a suspension of gold colloid (nominally 10 nm diameter) and purified by stirred cell ultrafiltration. Chemical structures were confirmed by (1)H and (13)C nuclear magnetic resonance spectroscopy and matrix assisted laser desorption/ionization time-of-flight mass spectrometry. Particle size and surface plasmon resonance of the conjugates were characterized by dynamic light scattering (DLS) and UV-Vis spectroscopy, respectively. X-ray photoelectron spectroscopy (XPS) was utilized to confirm covalent bonding between the thiols on the dendron and the gold surface. XPS also revealed changes in the S/Au intensity ratio as a function of the dendron chemical structure, suggesting steric effects play a role in the reaction and/or conformation of dendrons on the gold surface. The colloidal and chemical stability of the conjugates as a function of temperature, pH, and suspending medium, and with respect to chemical resistance toward KCN, was investigated using DLS and UV-Vis absorption.
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Affiliation(s)
| | | | | | - Anil K. Patri
- Nanotechnology Characterization Laboratory, Advanced Technology Program, SAIC-Frederick, Inc., National Cancer Institute at Frederick, MD 21702
| | - Vincent A. Hackley
- Correspondence: Dr. Vincent Hackley, National Institute of Standards and Technology, 100 Bureau Drive Stop 8520, Gaithersburg, MD 20899-8520, Tel: 301-975-5790, Fax: 301-975-5334,
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45
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Zhao F, Li W. Dendrimer/inorganic nanomaterial composites: Tailoring preparation, properties, functions, and applications of inorganic nanomaterials with dendritic architectures. Sci China Chem 2011. [DOI: 10.1007/s11426-010-4205-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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46
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Daniel MC, Grow ME, Pan H, Bednarek M, Ghann WE, Zabetakis K, Cornish J. Gold nanoparticle-cored poly(propyleneimine) dendrimers as a new platform for multifunctional drug delivery systems. NEW J CHEM 2011. [DOI: 10.1039/c1nj20206e] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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47
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Cheng M, Lu Y, Yang P, Wang X. Platinum-(diphenylamino styryl benzylazanediyl) diacetic acid derivatives nanocomposites: Synthesis and catalytic applications. COLLOID JOURNAL 2010. [DOI: 10.1134/s1061933x10060190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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48
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de Silva N, Ha JM, Solovyov A, Nigra MM, Ogino I, Yeh SW, Durkin KA, Katz A. A bioinspired approach for controlling accessibility in calix[4]arene-bound metal cluster catalysts. Nat Chem 2010; 2:1062-8. [DOI: 10.1038/nchem.860] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Accepted: 08/24/2010] [Indexed: 11/10/2022]
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49
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Tam JM, Murthy AK, Ingram DR, Nguyen R, Sokolov KV, Johnston KP. Kinetic assembly of near-IR-active gold nanoclusters using weakly adsorbing polymers to control the size. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:8988-99. [PMID: 20361735 PMCID: PMC3818108 DOI: 10.1021/la904793t] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Clusters of metal nanoparticles with an overall size of less than 100 nm and high metal loadings for strong optical functionality are of interest in various fields including microelectronics, sensors, optoelectronics, and biomedical imaging and therapeutics. Herein we assemble approximately 5 nm gold particles into clusters with controlled size, as small as 30 nm and up to 100 nm, that contain only small amounts of polymeric stabilizers. The assembly is kinetically controlled with weakly adsorbing polymers, PLA(2K)-b-PEG(10K)-b-PLA(2K) or PEG (MW = 3350), by manipulating electrostatic, van der Waals (VDW), steric, and depletion forces. The cluster size and optical properties are tuned as a function of particle volume fractions and polymer/gold ratios to modulate the interparticle interactions. The close spacing between the constituent gold nanoparticles and high gold loadings (80-85 w/w gold) produce a strong absorbance cross section of approximately 9 x 10(-15) m(2) in the NIR at 700 nm. This morphology results from VDW and depletion attractive interactions that exclude the weakly adsorbed polymeric stabilizer from the cluster interior. The generality of this kinetic assembly platform is demonstrated for gold nanoparticles with a range of surface charges from highly negative to neutral with the two different polymers.
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Affiliation(s)
- Jasmine M Tam
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, USA
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50
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Bandari R, Höche T, Prager A, Dirnberger K, Buchmeiser M. Ring-Opening Metathesis Polymerization Based Pore-Size-Selective Functionalization of Glycidyl Methacrylate Based Monolithic Media: Access to Size-Stable Nanoparticles for Ligand-Free Metal Catalysis. Chemistry 2010; 16:4650-8. [DOI: 10.1002/chem.200902654] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2009] [Revised: 01/13/2010] [Indexed: 11/11/2022]
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