51
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Zhang P, Lyu Z, Viktorova J, Offenhäusser A, Feng L, Mayer D. Nanoparticle stripe sensor for highly sensitive and selective detection of mercury ions. Biosens Bioelectron 2018; 117:450-456. [DOI: 10.1016/j.bios.2018.06.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 06/08/2018] [Accepted: 06/18/2018] [Indexed: 10/28/2022]
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52
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Govindaraju S, Puthiaraj P, Lee MH, Yun K. Photoluminescent AuNCs@UiO-66 for Ultrasensitive Detection of Mercury in Water Samples. ACS OMEGA 2018; 3:12052-12059. [PMID: 31459285 PMCID: PMC6645368 DOI: 10.1021/acsomega.8b01665] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 09/13/2018] [Indexed: 05/31/2023]
Abstract
In this work, we synthesized gold nanoclusters within a Zirconium-based metal-organic framework (AuNCs@UiO-66) that may create new prospects for the development of novel sensing materials for biosensor applications. The resulting AuNCs@UiO-66 nanocomposite exhibits red fluorescence with a high quantum yield (11%), and the AuNCs are homogeneously distributed along UiO-66. Analytical and morphological characterizations of the resulting material were carried out by UV-visible spectroscopy, photoluminescence spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and high-resolution transmission electron microscopy. The synthesized AuNCs@UiO-66 nanocomposite was used for the effective detection of Hg2+ ions with a detection limit as low as 77 pM. Moreover, the fabricated sensors also successfully detected Hg2+ in real water samples. This sensor is stable and highly fluorescent, developed using a simple fabrication method, and would be constructive for the detection of other metal ions and in biological applications.
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Affiliation(s)
- Saravanan Govindaraju
- Department
of Bio Nanotechnology, Gachon University, Seongnam-si, Gyeonggi-do 13120, Republic of Korea
| | - Pillaiyar Puthiaraj
- Department
of Chemistry and Chemical Engineering, Inha
University, Incheon 22212, Republic of Korea
| | - Min-Ho Lee
- School
of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Kyusik Yun
- Department
of Bio Nanotechnology, Gachon University, Seongnam-si, Gyeonggi-do 13120, Republic of Korea
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53
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Chu Z, Han Y, Král P, Klajn R. “Precipitation on Nanoparticles”: Attractive Intermolecular Interactions Stabilize Specific Ligand Ratios on the Surfaces of Nanoparticles. Angew Chem Int Ed Engl 2018; 57:7023-7027. [DOI: 10.1002/anie.201800673] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 03/13/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Zonglin Chu
- Department of Organic Chemistry Weizmann Institute of Science Rehovot 76100 Israel
| | - Yanxiao Han
- Department of Chemistry University of Illinois at Chicago Chicago IL 60607 USA
| | - Petr Král
- Department of Chemistry University of Illinois at Chicago Chicago IL 60607 USA
- Department of Physics, Department of Biopharmaceutical Sciences University of Illinois at Chicago Chicago IL 60607 USA
| | - Rafal Klajn
- Department of Organic Chemistry Weizmann Institute of Science Rehovot 76100 Israel
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54
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Chu Z, Han Y, Král P, Klajn R. “Precipitation on Nanoparticles”: Attractive Intermolecular Interactions Stabilize Specific Ligand Ratios on the Surfaces of Nanoparticles. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800673] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Zonglin Chu
- Department of Organic Chemistry Weizmann Institute of Science Rehovot 76100 Israel
| | - Yanxiao Han
- Department of Chemistry University of Illinois at Chicago Chicago IL 60607 USA
| | - Petr Král
- Department of Chemistry University of Illinois at Chicago Chicago IL 60607 USA
- Department of Physics, Department of Biopharmaceutical Sciences University of Illinois at Chicago Chicago IL 60607 USA
| | - Rafal Klajn
- Department of Organic Chemistry Weizmann Institute of Science Rehovot 76100 Israel
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55
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Li L, Wang F, Lv Y, Liu J, Bian H, Wang W, Li Y, Shao Z. CQDs-Doped Magnetic Electrospun Nanofibers: Fluorescence Self-Display and Adsorption Removal of Mercury(II). ACS OMEGA 2018; 3:4220-4230. [PMID: 31458655 PMCID: PMC6641464 DOI: 10.1021/acsomega.7b01969] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Accepted: 03/02/2018] [Indexed: 06/10/2023]
Abstract
This paper reports the carbon quantum dots-doped magnetic electrospinning nanofibers for the self-display and removal of Hg(II) ions from water. The fluorescent carbon quantum dots and magnetic Fe3O4 nanoparticles were pre-prepared successfully, and they appeared to be homogeneously dispersed in nanofibers via electrospinning. During the sorption of Hg(II) ions, the significant fluorescence signals of nanofibers gradually declined and exhibited a good linear relationship with cumulative adsorption capacity, which could be easily recorded by the photoluminescence spectra. The sorption performance of mercury ions onto the nanofibers was investigated in terms of different experimental factors including contact time, solution pH value, and initial ion concentration. Considering the actual parameters, the nanofibers were sensitive self-display adsorption system for Hg(II) ions in the existence of other cation. The sorption data were described by different kinetic models, which indicate that the whole sorption was controlled by chemical adsorption. The intraparticle diffusion mass transfer was not obvious in this system, which further proved the uniform adsorption and even fluorescence quenching in nanofibers. Additionally, the nanocomposite fiber could regenerate in several cycles with no significant loss of adsorption capacity and fluorescence intensity. Thus, the nanofibers are promising alternatives for environmental pollution incidents. It is especially competent due to its high efficiency for self-display and removal of high concentration of mercury ions.
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Affiliation(s)
- Lei Li
- School
of Materials Science and Engineering, Beijing
Institute of Technology, Beijing 100081, China
- Beijing
Engineering Research Centre of Cellulose and Its Derivatives, Beijing 100081, China
| | - Feijun Wang
- School
of Materials Science and Engineering, Beijing
Institute of Technology, Beijing 100081, China
- Beijing
Engineering Research Centre of Cellulose and Its Derivatives, Beijing 100081, China
| | - Yanyan Lv
- School
of Materials Science and Engineering, Beijing
Institute of Technology, Beijing 100081, China
- Beijing
Engineering Research Centre of Cellulose and Its Derivatives, Beijing 100081, China
| | - Jianxin Liu
- School
of Materials Science and Engineering, Beijing
Institute of Technology, Beijing 100081, China
- Beijing
Engineering Research Centre of Cellulose and Its Derivatives, Beijing 100081, China
| | - Hongli Bian
- School
of Materials Science and Engineering, Beijing
Institute of Technology, Beijing 100081, China
- Beijing
Engineering Research Centre of Cellulose and Its Derivatives, Beijing 100081, China
| | - Wenjun Wang
- School
of Materials Science and Engineering, Beijing
Institute of Technology, Beijing 100081, China
- Beijing
Engineering Research Centre of Cellulose and Its Derivatives, Beijing 100081, China
| | - Yonghong Li
- School
of Materials Science and Engineering, Beijing
Institute of Technology, Beijing 100081, China
| | - Ziqiang Shao
- School
of Materials Science and Engineering, Beijing
Institute of Technology, Beijing 100081, China
- Beijing
Engineering Research Centre of Cellulose and Its Derivatives, Beijing 100081, China
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56
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Luo Z, Marson D, Ong QK, Loiudice A, Kohlbrecher J, Radulescu A, Krause-Heuer A, Darwish T, Balog S, Buonsanti R, Svergun DI, Posocco P, Stellacci F. Quantitative 3D determination of self-assembled structures on nanoparticles using small angle neutron scattering. Nat Commun 2018; 9:1343. [PMID: 29632331 PMCID: PMC5890256 DOI: 10.1038/s41467-018-03699-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 03/02/2018] [Indexed: 11/16/2022] Open
Abstract
The ligand shell (LS) determines a number of nanoparticles’ properties. Nanoparticles’ cores can be accurately characterized; yet the structure of the LS, when composed of mixture of molecules, can be described only qualitatively (e.g., patchy, Janus, and random). Here we show that quantitative description of the LS’ morphology of monodisperse nanoparticles can be obtained using small-angle neutron scattering (SANS), measured at multiple contrasts, achieved by either ligand or solvent deuteration. Three-dimensional models of the nanoparticles’ core and LS are generated using an ab initio reconstruction method. Characteristic length scales extracted from the models are compared with simulations. We also characterize the evolution of the LS upon thermal annealing, and investigate the LS morphology of mixed-ligand copper and silver nanoparticles as well as gold nanoparticles coated with ternary mixtures. Our results suggest that SANS combined with multiphase modeling is a versatile approach for the characterization of nanoparticles’ LS. The ligand shell of a nanoparticle remains difficult to resolve, as the available characterization methods provide only qualitative information. Here, the authors introduce an approach based on small-angle neutron scattering that can quantitatively reveal the organization of ligands in mixed-monolayer nanoparticles.
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Affiliation(s)
- Zhi Luo
- Institute of Materials, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Domenico Marson
- Department of Engineering and Architecture and INSTM Trieste Unit, University of Trieste, 34127, Trieste, Italy
| | - Quy K Ong
- Institute of Materials, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Anna Loiudice
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Joachim Kohlbrecher
- Laboratory for Neutron Scattering and Imaging, Paul-Scherrer Institute, 5232, Villigen, Switzerland
| | - Aurel Radulescu
- Jülich Center for Neutron Science, JCNS at Heinz Maier-Leibnitz Zentrum, Forschungszentrum Jülich GmbH, 85747, Garching, Germany
| | - Anwen Krause-Heuer
- The National Deuteration Facility, Australian Nuclear Science and Technology Organisation, Kirrawee DC, NSW, 2232, Australia
| | - Tamim Darwish
- The National Deuteration Facility, Australian Nuclear Science and Technology Organisation, Kirrawee DC, NSW, 2232, Australia
| | - Sandor Balog
- Adolphe Merkle Institute, University of Fribourg, 1700, Fribourg, Switzerland
| | - Raffaella Buonsanti
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Dmitri I Svergun
- European Molecular Biology Laboratory, Hamburg Unit, EMBL c/o DESY, 22603, Hamburg, Germany
| | - Paola Posocco
- Department of Engineering and Architecture and INSTM Trieste Unit, University of Trieste, 34127, Trieste, Italy
| | - Francesco Stellacci
- Institute of Materials, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
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57
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Fu Y, Huang Y, Hu J. Preparation of chitosan/MCM-41-PAA nanocomposites and the adsorption behaviour of Hg(II) ions. ROYAL SOCIETY OPEN SCIENCE 2018; 5:171927. [PMID: 29657793 PMCID: PMC5882717 DOI: 10.1098/rsos.171927] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 02/21/2018] [Indexed: 06/01/2023]
Abstract
A novel functional hybrid mesoporous composite material (CMP) based on chitosan and MCM-41-PAA was reported and its application as an excellent adsorbent for Hg(II) ions was also investigated. Innovatively, MCM-41-PAA was prepared by using diatomite and polyacrylic acid (PAA) with integrated polymer-silica hybrid frameworks, and then CMP was fabricated by introducing MCM-41-PAA to chitosan using glutaraldehyde as a cross-linking agent. The structure and morphology of CMP were characterized by X-ray diffraction, Fourier transform infrared spectra, thermogravimetric analysis, scanning electron microscopy and Brunauer-Emmett-Teller measurements. The results showed that the CMP possessed multifunctional groups such as -OH, -COOH and -NH2 with large specific surface area. Adsorption behaviour of Hg(II) ions onto CMP was fitted better by the pseudo-second-order kinetic model and the Langmuir model when the initial Hg(II) concentration, pH, adsorption temperature and time were 200 mg l-1, 4, 298 K and 120 min, respectively, as the optimum conditions. The corresponding maximum adsorption capacity could reach 164 mg g-1. According to the thermodynamic parameters determined such as free energy, enthalpy and entropy, the adsorption process of Hg(II) ions was spontaneous endothermic adsorption.
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Affiliation(s)
| | | | - Jianshe Hu
- Author for correspondence: Jianshe Hu e-mail:
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58
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Pandey RK, Sun Y, Nakanishi H, Soh S. Reversible and Continuously Tunable Control of Charge of Close Surfaces. J Phys Chem Lett 2017; 8:6142-6147. [PMID: 29206045 DOI: 10.1021/acs.jpclett.7b02763] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Surfaces of almost all types of materials are often charged easily by contact electrification or deposition of ions; hence, surface charge is ubiquitous and has a vast range of influences in our lives and in industry. Since the 19th century, scientists have been measuring the charge of multiple materials collectively. The common expectation is that the total charge of multiple materials is equal to the sum of the charges of the individual materials. This study describes a previously unreported phenomenon in which the total charge of two insulating surfaces decreases when the surfaces are brought close to each other. The charge varies continuously and reversibly depending on the distance of separation between the surfaces. Experimental results derived from analyzing the movement of charge suggest that the changes are due to a rapid exchange of charge between the surfaces and their surrounding air. This change can be used to control the surface charge of the materials flexibly and reversibly.
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Affiliation(s)
- Rakesh K Pandey
- Department of Chemical and Biomolecular Engineering, National University of Singapore , 4 Engineering Drive 4, Singapore 117585, Singapore
- Department of Macromolecular Science and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology , Matsugasaki, Kyoto 606-8585, Japan
| | - Yajuan Sun
- Department of Chemical and Biomolecular Engineering, National University of Singapore , 4 Engineering Drive 4, Singapore 117585, Singapore
| | - Hideyuki Nakanishi
- Department of Macromolecular Science and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology , Matsugasaki, Kyoto 606-8585, Japan
| | - Siowling Soh
- Department of Chemical and Biomolecular Engineering, National University of Singapore , 4 Engineering Drive 4, Singapore 117585, Singapore
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59
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Ertem E, Diez-Castellnou M, Ong QK, Stellacci F. Novel Sensing Strategies Based on Monolayer Protected Gold Nanoparticles for the Detection of Metal Ions and Small Molecules. CHEM REC 2017; 18:819-828. [DOI: 10.1002/tcr.201700065] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 12/01/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Elif Ertem
- Department of Material Science; École Polytechnique Fédérale de Lausanne (EPFL). MXG 030, Station 12; 1015 Lausanne Switzerland
| | - Marta Diez-Castellnou
- Department of Material Science; École Polytechnique Fédérale de Lausanne (EPFL). MXG 030, Station 12; 1015 Lausanne Switzerland
| | - Quy Khac Ong
- Department of Material Science; École Polytechnique Fédérale de Lausanne (EPFL). MXG 030, Station 12; 1015 Lausanne Switzerland
| | - Francesco Stellacci
- Department of Material Science; École Polytechnique Fédérale de Lausanne (EPFL). MXG 030, Station 12; 1015 Lausanne Switzerland
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60
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Monzel C, Vicario C, Piehler J, Coppey M, Dahan M. Magnetic control of cellular processes using biofunctional nanoparticles. Chem Sci 2017; 8:7330-7338. [PMID: 29163884 PMCID: PMC5672790 DOI: 10.1039/c7sc01462g] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Accepted: 08/07/2017] [Indexed: 02/06/2023] Open
Abstract
Remote control of cellular functions is a key challenge in biomedical research. Only a few tools are currently capable of manipulating cellular events at distance, at spatial and temporal scales matching their naturally active range. A promising approach, often referred to as 'magnetogenetics', is based on the use of magnetic fields, in conjunction with targeted biofunctional magnetic nanoparticles. By triggering molecular stimuli via mechanical, thermal or biochemical perturbations, magnetic actuation constitutes a highly versatile tool with numerous applications in fundamental research as well as exciting prospects in nano- and regenerative medicine. Here, we highlight recent studies, comment on the advancement of magnetic manipulation, and discuss remaining challenges.
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Affiliation(s)
- Cornelia Monzel
- Institut Curie , PSL Research University , Laboratoire Physico Chimie , CNRS UMR168 , UPMC , F-75005 Paris , France .
| | - Chiara Vicario
- Institut Curie , PSL Research University , Laboratoire Physico Chimie , CNRS UMR168 , UPMC , F-75005 Paris , France .
| | - Jacob Piehler
- University of Osnabrück , Department of Biology/Chemistry , Division of Biophysics , 49076 Osnabrück , Germany
| | - Mathieu Coppey
- Institut Curie , PSL Research University , Laboratoire Physico Chimie , CNRS UMR168 , UPMC , F-75005 Paris , France .
| | - Maxime Dahan
- Institut Curie , PSL Research University , Laboratoire Physico Chimie , CNRS UMR168 , UPMC , F-75005 Paris , France .
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61
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Stoeckel MA, Gobbi M, Bonacchi S, Liscio F, Ferlauto L, Orgiu E, Samorì P. Reversible, Fast, and Wide-Range Oxygen Sensor Based on Nanostructured Organometal Halide Perovskite. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1702469. [PMID: 28741739 DOI: 10.1002/adma.201702469] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 06/15/2017] [Indexed: 05/26/2023]
Abstract
Nanostructured materials characterized by high surface-volume ratio hold the promise to constitute the active materials for next-generation sensors. Solution-processed hybrid organohalide perovskites, which have been extensively used in the last few years for optoelectronic applications, are characterized by a self-assembled nanostructured morphology, which makes them an ideal candidate for gas sensing. Hitherto, detailed studies of the dependence of their electrical characteristics on the environmental atmosphere have not been performed, and even the effect of a ubiquitous gas such as O2 has been widely overlooked. Here, the electrical response of organohalide perovskites to oxygen is studied. Surprisingly, a colossal increase (3000-fold) in the resistance of perovskite-based lateral devices is found when measured in a full oxygen atmosphere, which is ascribed to a trap healing mechanism originating from an O2 -mediated iodine vacancies filling. A variation as small as 70 ppm in the oxygen concentration can be detected. The effect is fast (<400 ms) and fully reversible, making organohalide perovskites ideal active materials for oxygen sensing. The effect of oxygen on the electrical characteristics of organohalide perovskites must be taken into deep consideration for the design and optimization of any other perovskite-based (opto-) electronic device working in ambient conditions.
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Affiliation(s)
- Marc-Antoine Stoeckel
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, F-67000, Strasbourg, France
| | - Marco Gobbi
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, F-67000, Strasbourg, France
| | - Sara Bonacchi
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, F-67000, Strasbourg, France
| | - Fabiola Liscio
- Istituto per la Microelettronica e Microsistemi (IMM), Consiglio Nazionale delle Ricerche (CNR), Via Gobetti 101, 40129, Bologna, Italy
| | - Laura Ferlauto
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, F-67000, Strasbourg, France
- Istituto per la Microelettronica e Microsistemi (IMM), Consiglio Nazionale delle Ricerche (CNR), Via Gobetti 101, 40129, Bologna, Italy
| | - Emanuele Orgiu
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, F-67000, Strasbourg, France
| | - Paolo Samorì
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 allée Gaspard Monge, F-67000, Strasbourg, France
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62
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Qi L, Xiao M, Wang F, Wang L, Ji W, Man T, Aldalbahi A, Naziruddin Khan M, Periyasami G, Rahaman M, Alrohaili A, Qu X, Pei H, Wang C, Li L. Poly-cytosine-mediated nanotags for SERS detection of Hg 2. NANOSCALE 2017; 9:14184-14191. [PMID: 28905956 DOI: 10.1039/c7nr05165d] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Highly sensitive and selective detection of heavy metal ions, such as Hg2+, is of great importance because the contamination of heavy metal ions has been a serious threat to human health. Herein, we have developed poly-cytosine (polyC)-mediated surface-enhanced Raman scattering (SERS) nanotags as a sensor system for rapid, selective, and sensitive detection of Hg2+ based on thymidine-Hg2+-thymidine (T-Hg2+-T) coordination and polyC-mediated Raman activity. The SERS nanotags exploit the mismatched T-T base pairs to capture Hg2+ form T-Hg2+-T bridges, which induce the aggregation of nanotags giving rise to the drastic amplification in the SERS signals. Moreover, this polyC not only provides the anchoring function to induce the formation of intrinsic silver-cytosine coordination but also engineers the Raman-activity of SERS nanotags by mediating its length. As a result, the polyC-mediated SERS nanotags show an excellent response for Hg2+ in the concentration range from 0.1 to 1000 nM and good selectivity over other metal ions. Given its simple principle and easy operation, the polyC-mediated SERS nanotags, therefore, could serve as a promising sensor for practical use.
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Affiliation(s)
- Lin Qi
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200241, P. R. China.
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63
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Ong Q, Luo Z, Stellacci F. Characterization of Ligand Shell for Mixed-Ligand Coated Gold Nanoparticles. Acc Chem Res 2017; 50:1911-1919. [PMID: 28771322 DOI: 10.1021/acs.accounts.7b00165] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Gold nanoparticles owe a large number of their properties to their ligand shell. Indeed, many researchers routinely use mixtures of ligand molecules for their nanoparticles to impart complex property sets. It has been shown that the morphology of ligand shells (e.g., Janus, random, stripelike) leads to specific properties. Examples include wettability, solubility, protein nonspecific adsorption, cell penetration, catalysis, and cation-capturing abilities. Yet, it remains a great challenge to evaluate such morphologies in even the most fundamental terms such as dimension and shape. In this Account, we review recent progress in characterization techniques applicable to gold nanoparticles with ligand shells composed of mixed ligands. We divide the characterization into three major categories, namely, microscopy, spectroscopy, and simulation. In microscopy, we review progresses in scanning tunneling microscopy (STM), atomic force microscopy (AFM), and scanning/transmission electron microscopy. In spectroscopy, we mainly highlight recent achievements in nuclear magnetic resonance (NMR), mass spectrometry (MS), small angle neutron scattering (SANS), electron spin resonance (EPR), and adsorption based spectroscopies. In simulation, we point out the latest results in understanding thermodynamic stability of ligand shell morphology and emphasize the role of computer simulation for helping interpretation of experimental data. We conclude with a perspective of future development.
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Affiliation(s)
- Quy Ong
- Institute of Materials, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne-1015, Switzerland
| | - Zhi Luo
- Institute of Materials, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne-1015, Switzerland
| | - Francesco Stellacci
- Institute of Materials, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne-1015, Switzerland
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64
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Amendola V, Pilot R, Frasconi M, Maragò OM, Iatì MA. Surface plasmon resonance in gold nanoparticles: a review. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:203002. [PMID: 28426435 DOI: 10.1088/1361-648x/aa60f3] [Citation(s) in RCA: 585] [Impact Index Per Article: 83.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
In the last two decades, plasmon resonance in gold nanoparticles (Au NPs) has been the subject of intense research efforts. Plasmon physics is intriguing and its precise modelling proved to be challenging. In fact, plasmons are highly responsive to a multitude of factors, either intrinsic to the Au NPs or from the environment, and recently the need emerged for the correction of standard electromagnetic approaches with quantum effects. Applications related to plasmon absorption and scattering in Au NPs are impressively numerous, ranging from sensing to photothermal effects to cell imaging. Also, plasmon-enhanced phenomena are highly interesting for multiple purposes, including, for instance, Raman spectroscopy of nearby analytes, catalysis, or sunlight energy conversion. In addition, plasmon excitation is involved in a series of advanced physical processes such as non-linear optics, optical trapping, magneto-plasmonics, and optical activity. Here, we provide the general overview of the field and the background for appropriate modelling of the physical phenomena. Then, we report on the current state of the art and most recent applications of plasmon resonance in Au NPs.
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Affiliation(s)
- Vincenzo Amendola
- Department of Chemical Sciences, University of Padova, via Marzolo 1, I-35131 Padova, Italy. Consorzio INSTM, UdR Padova, Italy
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65
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Timonen JVI, Grzybowski BA. Tweezing of Magnetic and Non-Magnetic Objects with Magnetic Fields. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1603516. [PMID: 28198579 DOI: 10.1002/adma.201603516] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 10/06/2016] [Indexed: 06/06/2023]
Abstract
Although strong magnetic fields cannot be conveniently "focused" like light, modern microfabrication techniques enable preparation of microstructures with which the field gradients - and resulting magnetic forces - can be localized to very small dimensions. This ability provides the foundation for magnetic tweezers which in their classical variant can address magnetic targets. More recently, the so-called negative magnetophoretic tweezers have also been developed which enable trapping and manipulations of completely nonmagnetic particles provided that they are suspended in a high-magnetic-susceptibility liquid. These two modes of magnetic tweezing are complimentary techniques tailorable for different types of applications. This Progress Report provides the theoretical basis for both modalities and illustrates their specific uses ranging from the manipulation of colloids in 2D and 3D, to trapping of living cells, control of cell function, experiments with single molecules, and more.
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Affiliation(s)
- Jaakko V I Timonen
- Department of Applied Physics, Aalto University School of Science, Espoo, 02150, Finland
| | - Bartosz A Grzybowski
- Center for Soft and Living Matter, Ulsan National Institute of Science and Technology, Ulsan, 44919, South Korea
- Department of Chemistry, Ulsan National Institute of Science and Technology, Ulsan, 44919, South Korea
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66
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Tan L, Chen Z, Zhang C, Wei X, Lou T, Zhao Y. Colorimetric Detection of Hg 2+ Based on the Growth of Aptamer-Coated AuNPs: The Effect of Prolonging Aptamer Strands. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1603370. [PMID: 28139891 DOI: 10.1002/smll.201603370] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Revised: 12/20/2016] [Indexed: 06/06/2023]
Abstract
Herein, a versatile and sensitive colorimetric sensor for Hg2+ based on aptamer-target specific binding and target-mediated growth of AuNPs is reported. The 15 T bases are first designed to detect Hg2+ through T-Hg2+ -T coordination. Aptamer-target binding results in the desorption of the aptamer from AuNP surface, the remaining aptamers adsorbed on AuNP surface trigger the growth of AuNPs with morphologically varied nanostructures, and then different colored solutions are formed. On this occasion, the limit of detection (LOD) of 9.6 × 10-9 m is obtained. The other two aptamer strands (25- and 59-mer) are designed by increasing A bases on either side and both sides of 15 T, respectively. The interaction of the binding domain and Hg2+ makes desorption of 15 T from AuNP surface, whereas excess bases not committed to the binding domain still adsorbed on AuNP surface. These excess bases control the growth of AuNPs, and enhance the sensitivity. The LODs are 4.05 and 3 × 10-9 m for 25- and 59-mer aptamers, respectively. In addition, the 59-mer aptamer system is applied to identify Hg2+ in real river samples, the LOD of 6.2 × 10-9 m is obtained.
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Affiliation(s)
- Lulu Tan
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Zhengbo Chen
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Chi Zhang
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Xiangcong Wei
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Tianhong Lou
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Yan Zhao
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
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67
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Govindaraju S, Ankireddy SR, Viswanath B, Kim J, Yun K. Fluorescent Gold Nanoclusters for Selective Detection of Dopamine in Cerebrospinal fluid. Sci Rep 2017; 7:40298. [PMID: 28067307 PMCID: PMC5220289 DOI: 10.1038/srep40298] [Citation(s) in RCA: 142] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 12/05/2016] [Indexed: 02/08/2023] Open
Abstract
Since the last two decades, protein conjugated fluorescent gold nanoclusters (NCs) owe much attention in the field of medical and nanobiotechnology due to their excellent photo stability characteristics. In this paper, we reported stable, nontoxic and red fluorescent emission BSA-Au NCs for selective detection of L-dopamine (DA) in cerebrospinal fluid (CSF). The evolution was probed by various instrumental techniques such as UV-vis spectroscopy, High resolution transmission electron microscopy (HTEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), photoluminescence spectroscopy (PL). The synthesised BSA-Au NCs were showing 4–6 nm with high fluorescent ~8% Quantum yield (QY). The fluorescence intensity of BSA-Au NCs was quenched upon the addition of various concentrations of DA via an electron transfer mechanism. The decrease in BSA-Au NCs fluorescence intensity made it possible to determine DA in PBS buffer and the spiked DA in CSF in the linear range from 0 to 10 nM with the limit of detection (LOD) 0.622 and 0.830 nM respectively. Best of our knowledge, as-prepared BSA-Au NCs will gain possible strategy and good platform for biosensor, drug discovery, and rapid disease diagnosis such as Parkinson’s and Alzheimer diseases.
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Affiliation(s)
- Saravanan Govindaraju
- Department of Bionanotechnology, Gachon University, Gyeonggi-do, 13120, Republic of Korea
| | - Seshadri Reddy Ankireddy
- Department of Chemical and Biological Engineering, Gachon University, Gyeonggi-do, 13120, Republic of Korea
| | - Buddolla Viswanath
- Department of Bionanotechnology, Gachon University, Gyeonggi-do, 13120, Republic of Korea
| | - Jongsung Kim
- Department of Chemical and Biological Engineering, Gachon University, Gyeonggi-do, 13120, Republic of Korea
| | - Kyusik Yun
- Department of Bionanotechnology, Gachon University, Gyeonggi-do, 13120, Republic of Korea
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68
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Balzaretti R, Meder F, Monopoli MP, Boselli L, Armenia I, Pollegioni L, Bernardini G, Gornati R. Synthesis, characterization and programmable toxicity of iron oxide nanoparticles conjugated withd-amino acid oxidase. RSC Adv 2017. [DOI: 10.1039/c6ra25349k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
RgDAAO conjugated to γ-Fe2O3NPs generates a low toxic NP-DAAO system, which kills cancer cells through ROS production.
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Affiliation(s)
- Riccardo Balzaretti
- Department of Biotechnology and Life Sciences
- University of Insubria
- Varese
- Italy
| | - Fabian Meder
- Centre for Bionano Interactions
- University College Dublin
- Dublin
- Ireland
| | - Marco P. Monopoli
- Centre for Bionano Interactions
- University College Dublin
- Dublin
- Ireland
- Department of Pharmacy and Medical Chemistry
| | - Luca Boselli
- Centre for Bionano Interactions
- University College Dublin
- Dublin
- Ireland
| | - Ilaria Armenia
- Department of Biotechnology and Life Sciences
- University of Insubria
- Varese
- Italy
| | - Loredano Pollegioni
- Department of Biotechnology and Life Sciences
- University of Insubria
- Varese
- Italy
- The Protein Factory Research Center
| | - Giovanni Bernardini
- Department of Biotechnology and Life Sciences
- University of Insubria
- Varese
- Italy
- The Protein Factory Research Center
| | - Rosalba Gornati
- Department of Biotechnology and Life Sciences
- University of Insubria
- Varese
- Italy
- The Protein Factory Research Center
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69
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Halder S, Mondal J, Ortega-Castro J, Frontera A, Roy P. A Ni-based MOF for selective detection and removal of Hg2+ in aqueous medium: a facile strategy. Dalton Trans 2017; 46:1943-1950. [DOI: 10.1039/c6dt04722j] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Ni-based 3D MOF, [Ni(3-bpd)2(NCS)2]n, where 3-bpd is 1,4-bis(3-pyridyl)-2,3-diaza-1,3-butadiene, has been explored for simultaneous detection and removal of Hg2+ in aqueous medium with excellent Hg uptake capacity.
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Affiliation(s)
| | - John Mondal
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | | | - Antonio Frontera
- Departament de Química
- Universitat de les Illes Balears
- 07122 Palma de Mallorca
- Spain
| | - Partha Roy
- Department of Chemistry
- Jadavpur University
- Kolkata-700 032
- India
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70
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Chu TW, Kopeček J. Drug-Free Macromolecular Therapeutics--A New Paradigm in Polymeric Nanomedicines. Biomater Sci 2016; 3:908-22. [PMID: 26191406 DOI: 10.1039/c4bm00442f] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
This review highlights a unique research area in polymer-based nanomedicine designs. Drug-free macromolecular therapeutics induce apoptosis of malignant cells by the crosslinking of surface non-internalizing receptors. The receptor crosslinking is mediated by the biorecognition of high-fidelity natural binding motifs (such as antiparallel coiled-coil peptides or complementary oligonucleotides) that are grafted to the side chains of polymers or attached to targeting moieties against cell receptors. This approach features the absence of low-molecular-weight cytotoxic compounds. Here, we summarize the rationales, different designs, and advantages of drug-free macromolecular therapeutics. Recent developments of novel therapeutic systems for B-cell lymphomas are discussed, as well as relevant approaches for other diseases. We conclude by pointing out various potential future directions in this exciting new field.
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Affiliation(s)
- Te-Wei Chu
- Department of Pharmaceutics and Pharmaceutical Chemistry/Center for Controlled Chemical Delivery, University of Utah, Salt Lake City, UT 84112, USA
| | - Jindřich Kopeček
- Department of Pharmaceutics and Pharmaceutical Chemistry/Center for Controlled Chemical Delivery, University of Utah, Salt Lake City, UT 84112, USA ; Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA
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71
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Pandeeswar M, Senanayak SP, Govindaraju T. Nanoarchitectonics of Small Molecule and DNA for Ultrasensitive Detection of Mercury. ACS APPLIED MATERIALS & INTERFACES 2016; 8:30362-30371. [PMID: 27753489 DOI: 10.1021/acsami.6b10527] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Reliable and ultrasensitive detection of mercury ions is of paramount importance for toxicology assessment, environmental protection, and human health. Herein, we present a novel optoelectronic approach based on nanoarchitectonics of small-molecule templated DNA system that consists of an adenine (A)-conjugated small organic semiconductor (BNA) and deoxyribo-oligothymidine (dTn). This mutually templated dynamic chiral coassembly system (BNAn-dTn) with tunable chiroptical, morphological, and electrical properties is tapped in to enable ultrasensitive and selective detection of inorganic and organometallic mercury in water. We observe a rapid transformation of the BNAn-dTn coassembly into a metallo-DNA duplex [dT-Hg-dT]n in the presence of mercury, which is utilized for a chiro-optical and conductivity-based rapid and subnanomolar sensitivity (≥0.1 nM, 0.02 ppb) to mercury ions in water (∼100 times lower than United States Environmental Protection Agency tolerance limit). This ultrasensitive detection of inorganic and organometallic mercury is driven by a novel chemical design principle that allows strong mercury thymine interaction. This study is anticipated to inspire the development of future templated DNA nanotechnology-based optoelectronic devices for the rapid and ultrasensitive detection of numerous other toxic analytes.
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Affiliation(s)
- M Pandeeswar
- Bioorganic Chemistry Laboratory, New Chemistry Unit and ‡Molecular Electronics Lab, Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur P.O., Bengaluru 560064, Karnataka, India
| | - Satyaprasad P Senanayak
- Bioorganic Chemistry Laboratory, New Chemistry Unit and ‡Molecular Electronics Lab, Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur P.O., Bengaluru 560064, Karnataka, India
| | - T Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit and ‡Molecular Electronics Lab, Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur P.O., Bengaluru 560064, Karnataka, India
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72
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Colorimetric determination of Hg(II) based on a visually detectable signal amplification induced by a Cu@Au-Hg trimetallic amalgam with peroxidase-like activity. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-2002-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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73
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Yang Y, Yao Z, Li W, Chen K, Liu L, Wu HC. Selective detection of mercury(II) and methylmercury(II) via coordination-induced emission of a small-molecule probe. Sci China Chem 2016. [DOI: 10.1007/s11426-016-0137-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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74
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Lee Y, Lee S, Lee DY, Yu B, Miao W, Jon S. Multistimuli-Responsive Bilirubin Nanoparticles for Anticancer Therapy. Angew Chem Int Ed Engl 2016; 55:10676-80. [DOI: 10.1002/anie.201604858] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 06/20/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Yonghyun Lee
- KAIST Institute for the BioCentury; Department of Biological Sciences; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro Daejeon 34141 Republic of Korea
| | - Soyoung Lee
- KAIST Institute for the BioCentury; Department of Biological Sciences; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro Daejeon 34141 Republic of Korea
| | - Dong Yun Lee
- KAIST Institute for the BioCentury; Department of Biological Sciences; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro Daejeon 34141 Republic of Korea
| | - Byeongjun Yu
- KAIST Institute for the BioCentury; Department of Biological Sciences; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro Daejeon 34141 Republic of Korea
| | - Wenjun Miao
- KAIST Institute for the BioCentury; Department of Biological Sciences; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro Daejeon 34141 Republic of Korea
| | - Sangyong Jon
- KAIST Institute for the BioCentury; Department of Biological Sciences; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro Daejeon 34141 Republic of Korea
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75
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Lee Y, Lee S, Lee DY, Yu B, Miao W, Jon S. Multistimuli-Responsive Bilirubin Nanoparticles for Anticancer Therapy. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604858] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yonghyun Lee
- KAIST Institute for the BioCentury; Department of Biological Sciences; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro Daejeon 34141 Republic of Korea
| | - Soyoung Lee
- KAIST Institute for the BioCentury; Department of Biological Sciences; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro Daejeon 34141 Republic of Korea
| | - Dong Yun Lee
- KAIST Institute for the BioCentury; Department of Biological Sciences; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro Daejeon 34141 Republic of Korea
| | - Byeongjun Yu
- KAIST Institute for the BioCentury; Department of Biological Sciences; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro Daejeon 34141 Republic of Korea
| | - Wenjun Miao
- KAIST Institute for the BioCentury; Department of Biological Sciences; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro Daejeon 34141 Republic of Korea
| | - Sangyong Jon
- KAIST Institute for the BioCentury; Department of Biological Sciences; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro Daejeon 34141 Republic of Korea
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76
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Wang Z, Yang M, Chen C, Zhang L, Zeng H. Selectable Ultrasensitive Detection of Hg(2+) with Rhodamine 6G-Modified Nanoporous Gold Optical Sensor. Sci Rep 2016; 6:29611. [PMID: 27403721 PMCID: PMC4940742 DOI: 10.1038/srep29611] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Accepted: 06/22/2016] [Indexed: 01/18/2023] Open
Abstract
An extremely sensitive fluorescence sensor has been developed for selectively detection of mercury ions based on metallophilic Hg(2+)-Au(+) interactions, which results in an effective release of pre-adsorbed rhodamine 6G (R6G) molecules from the nanoporous gold substrate, associated with a significant decrease of fluorescence intensity. The optical sensor has a detection sensitivity down to 0.6 pM for Hg(2+) and CH3Hg(+) ions, in particular a superior selectivity in a complex aqueous system containing 13 different types of metal ions, meanwhile maintaining a long-term stability after 10 cycles. Such a fluorescence sensor combining multiple advantages therefore present promising potentials in various applications.
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Affiliation(s)
- Zheng Wang
- Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System (Ministry of Education), School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Min Yang
- Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System (Ministry of Education), School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Chao Chen
- Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System (Ministry of Education), School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Ling Zhang
- Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System (Ministry of Education), School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Heping Zeng
- Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System (Ministry of Education), School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
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77
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Yan Y, Warren SC, Fuller P, Grzybowski BA. Chemoelectronic circuits based on metal nanoparticles. NATURE NANOTECHNOLOGY 2016; 11:603-8. [PMID: 26974958 DOI: 10.1038/nnano.2016.39] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 02/17/2016] [Indexed: 05/11/2023]
Abstract
To develop electronic devices with novel functionalities and applications, various non-silicon-based materials are currently being explored. Nanoparticles have unique characteristics due to their small size, which can impart functions that are distinct from those of their bulk counterparts. The use of semiconductor nanoparticles has already led to improvements in the efficiency of solar cells, the processability of transistors and the sensitivity of photodetectors, and the optical and catalytic properties of metal nanoparticles have led to similar advances in plasmonics and energy conversion. However, metals screen electric fields and this has, so far, prevented their use in the design of all-metal nanoparticle circuitry. Here, we show that simple electronic circuits can be made exclusively from metal nanoparticles functionalized with charged organic ligands. In these materials, electronic currents are controlled by the ionic gradients of mobile counterions surrounding the 'jammed' nanoparticles. The nanoparticle-based electronic elements of the circuitry can be interfaced with metal nanoparticles capable of sensing various environmental changes (humidity, gas, the presence of various cations), creating electronic devices in which metal nanoparticles sense, process and ultimately report chemical signals. Because the constituent nanoparticles combine electronic and chemical sensing functions, we term these systems 'chemoelectronic'. The circuits have switching times comparable to those of polymer electronics, selectively transduce parts-per-trillion chemical changes into electrical signals, perform logic operations, consume little power (on the scale of microwatts), and are mechanically flexible. They are also 'green', in the sense that they comprise non-toxic nanoparticles cast at room temperature from alcohol solutions.
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Affiliation(s)
- Yong Yan
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Scott C Warren
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, USA
- Department of Applied Physical Sciences, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3216, USA
| | | | - Bartosz A Grzybowski
- IBS Center for Soft and Living Matter and the Department of Chemistry, UNIST, Ulsan, South Korea
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78
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Velachi V, Bhandary D, Singh JK, Cordeiro MNDS. Striped gold nanoparticles: New insights from molecular dynamics simulations. J Chem Phys 2016; 144:244710. [DOI: 10.1063/1.4954980] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Affiliation(s)
- Vasumathi Velachi
- LAQV@REQUIMTE/Department of Chemistry and Biochemistry, University of Porto, 4169-007 Porto, Portugal
| | - Debdip Bhandary
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Jayant K. Singh
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - M. Natália D. S. Cordeiro
- LAQV@REQUIMTE/Department of Chemistry and Biochemistry, University of Porto, 4169-007 Porto, Portugal
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79
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Jia Y, Gao P, Zhuang Y, Miao M, Lou X, Xia F. Facile Probe Design: Fluorescent Amphiphilic Nucleic Acid Probes without Quencher Providing Telomerase Activity Imaging Inside Living Cells. Anal Chem 2016; 88:6621-6. [DOI: 10.1021/acs.analchem.6b01777] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yongmei Jia
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Pengcheng Gao
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Yuan Zhuang
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Mao Miao
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Xiaoding Lou
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Fan Xia
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
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80
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Nanomaterial-based strategies for enhanced mercury trace analysis in environmental and drinking waters. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.09.007] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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81
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Bandodkar AJ, Jeerapan I, Wang J. Wearable Chemical Sensors: Present Challenges and Future Prospects. ACS Sens 2016. [DOI: 10.1021/acssensors.6b00250] [Citation(s) in RCA: 496] [Impact Index Per Article: 62.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Amay J. Bandodkar
- Department
of NanoEngineering, University of California, San Diego, La Jolla, California 92093, United States
| | - Itthipon Jeerapan
- Department
of NanoEngineering, University of California, San Diego, La Jolla, California 92093, United States
| | - Joseph Wang
- Department
of NanoEngineering, University of California, San Diego, La Jolla, California 92093, United States
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82
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Lee K, Yi Y, Yu Y. Remote Control of T Cell Activation Using Magnetic Janus Particles. Angew Chem Int Ed Engl 2016; 55:7384-7. [PMID: 27144475 DOI: 10.1002/anie.201601211] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 03/20/2016] [Indexed: 12/22/2022]
Abstract
We report a strategy for using magnetic Janus microparticles to control the stimulation of T cell signaling with single-cell precision. To achieve this, we designed Janus particles that are magnetically responsive on one hemisphere and stimulatory to T cells on the other side. By manipulating the rotation and locomotion of Janus particles under an external magnetic field, we could control the orientation of the particle-cell recognition and thereby the initiation of T cell activation. This study demonstrates a step towards employing anisotropic material properties of Janus particles to control single-cell activities without the need of complex magnetic manipulation devices.
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Affiliation(s)
- Kwahun Lee
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN, 47405, USA
| | - Yi Yi
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN, 47405, USA
| | - Yan Yu
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN, 47405, USA.
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83
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Lee K, Yi Y, Yu Y. Remote Control of T Cell Activation Using Magnetic Janus Particles. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601211] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Kwahun Lee
- Department of Chemistry; Indiana University; 800 E. Kirkwood Ave. Bloomington IN 47405 USA
| | - Yi Yi
- Department of Chemistry; Indiana University; 800 E. Kirkwood Ave. Bloomington IN 47405 USA
| | - Yan Yu
- Department of Chemistry; Indiana University; 800 E. Kirkwood Ave. Bloomington IN 47405 USA
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84
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Ordered Monolayer Gold Nano-urchin Structures and Their Size Induced Control for High Gas Sensing Performance. Sci Rep 2016; 6:24625. [PMID: 27090570 PMCID: PMC4835752 DOI: 10.1038/srep24625] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 03/31/2016] [Indexed: 11/09/2022] Open
Abstract
The synthesis of ordered monolayers of gold nano-urchin (Au-NU) nanostructures with controlled size, directly on thin films using a simple electrochemical method is reported in this study. In order to demonstrate one of the vast potential applications, the developed Au-NUs were formed on the electrodes of transducers (QCM) to selectively detect low concentrations of elemental mercury (Hg(0)) vapor. It was found that the sensitivity and selectivity of the sensor device is enhanced by increasing the size of the nanospikes on the Au-NUs. The Au-NU-12 min QCM (Au-NUs with nanospikes grown on it for a period of 12 min) had the best performance in terms of transducer based Hg(0) vapor detection. The sensor had 98% accuracy, 92% recovery, 96% precision (repeatability) and significantly, showed the highest sensitivity reported to date, resulting in a limit of detection (LoD) of only 32 μg/m3 at 75 °C. When compared to the control counterpart, the accuracy and sensitivity of the Au-NU-12 min was enhanced by ~2 and ~5 times, respectively. The results demonstrate the excellent activity of the developed materials which can be applied to a range of applications due to their long range order, tunable size and ability to form directly on thin-films.
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85
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Moon HJ, Patel M, Chung H, Jeong B. Nanocomposite versus Mesocomposite for Osteogenic Differentiation of Tonsil-Derived Mesenchymal Stem Cells. Adv Healthc Mater 2016; 5:353-63. [PMID: 26634888 DOI: 10.1002/adhm.201500558] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 09/24/2015] [Indexed: 11/08/2022]
Abstract
Injectable inorganic/organic composite systems consisting of well-defined mesocrystals (4-8 μm) of calcium phosphate and polypeptide thermogel significantly enhance the osteogenic differentiation of the tonsil derived mesenchymal stem cells (TMSCs). Compared to composite systems incorporating nanoparticles (10-100 nm) or pure hydrogel systems, osteogenic biomarkers including alkaline phosphatase (ALP), bone morphogenetic protein 2, and osteocalcin are highly expressed at both the mRNA level and the protein level in the mesocrystal composite systems. ALP activity of differentiated cells is also significantly higher in the mesocomposite systems compared to the nanocomposite systems or the pure hydrogel systems. The mesocomposite systems provide not only hard surfaces for binding the cells/proteins by the inorganic mesocrystals but also a soft matrix for holding the cells by the hydrogel. Through the current research, (1) a novel method of preparing mesocrystals is developed, (2) TMSCs are proved as a new resource of stem cells, and (3) the mesocomposite systems are proved to be a promising tool in controlling stem cell differentiation. (4) Finally, the research emphasizes the significance of mesoscience as a new perspective of science in controlling cell and material interfaces.
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Affiliation(s)
- Hyo Jung Moon
- Department of Chemistry and Nanoscience; Ewha Womans University; 52 Ewhayeodae-gil Seodaemun-guSeoul 120-750 South Korea
| | - Madhumita Patel
- Department of Chemistry and Nanoscience; Ewha Womans University; 52 Ewhayeodae-gil Seodaemun-guSeoul 120-750 South Korea
| | - Heejung Chung
- Department of Chemistry and Nanoscience; Ewha Womans University; 52 Ewhayeodae-gil Seodaemun-guSeoul 120-750 South Korea
| | - Byeongmoon Jeong
- Department of Chemistry and Nanoscience; Ewha Womans University; 52 Ewhayeodae-gil Seodaemun-guSeoul 120-750 South Korea
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86
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Pardo A, Pujales R, Blanco M, Villar-Alvarez EM, Barbosa S, Taboada P, Mosquera V. Analysis of the influence of synthetic paramaters on the structure and physico-chemical properties of non-spherical iron oxide nanocrystals and their biological stability and compatibility. Dalton Trans 2016; 45:797-810. [DOI: 10.1039/c5dt03923a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Monodisperse non-spherical magnetic IONCs obtained by simple methods display excellent magnetic properties with high potential for theranostic applications.
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Affiliation(s)
- Alberto Pardo
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- 15782-Santiago de Compostela
- Spain
| | - Rosa Pujales
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- 15782-Santiago de Compostela
- Spain
| | - Mateo Blanco
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- 15782-Santiago de Compostela
- Spain
| | - Eva M. Villar-Alvarez
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- 15782-Santiago de Compostela
- Spain
| | - Silvia Barbosa
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- 15782-Santiago de Compostela
- Spain
| | - Pablo Taboada
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- 15782-Santiago de Compostela
- Spain
| | - Víctor Mosquera
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- 15782-Santiago de Compostela
- Spain
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87
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Dietrich H, Scheiner S, Portilla L, Zahn D, Halik M. Improving the Performance of Organic Thin-Film Transistors by Ion Doping of Ethylene-Glycol-Based Self-Assembled Monolayer Hybrid Dielectrics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:8023-8027. [PMID: 26524344 DOI: 10.1002/adma.201503911] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 09/29/2015] [Indexed: 06/05/2023]
Abstract
Tuning the electrostatics of ethylene-glycol-based self-assembled monolayers (SAMs) by doping with ions is shown. Molecular dynamics simulations unravel binding mechanisms and predict dipole strengths of the doped layers. Additionally, by applying such layers as dielectrics in organic thin-film transistors, the incorporated ions are proven to enhance device performance by lowering the threshold voltage and increasing conductivity.
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Affiliation(s)
- Hanno Dietrich
- Theoretical Chemistry and Computer-Chemistry-Center (CCC), FAU Erlangen-Nürnberg, Nägelsbachstraße, 25, 91052, Erlangen, Germany
| | - Simon Scheiner
- Organic Materials & Devices (OMD), Institute of Polymer Materials, FAU Erlangen-Nürnberg, Martensstraße, 7, 91058, Erlangen, Germany
| | - Luis Portilla
- Organic Materials & Devices (OMD), Institute of Polymer Materials, FAU Erlangen-Nürnberg, Martensstraße, 7, 91058, Erlangen, Germany
| | - Dirk Zahn
- Theoretical Chemistry and Computer-Chemistry-Center (CCC), FAU Erlangen-Nürnberg, Nägelsbachstraße, 25, 91052, Erlangen, Germany
| | - Marcus Halik
- Organic Materials & Devices (OMD), Institute of Polymer Materials, FAU Erlangen-Nürnberg, Martensstraße, 7, 91058, Erlangen, Germany
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88
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Kang H, Mintri S, Menon AV, Lee HY, Choi HS, Kim J. Pharmacokinetics, pharmacodynamics and toxicology of theranostic nanoparticles. NANOSCALE 2015; 7:18848-62. [PMID: 26528835 PMCID: PMC4648690 DOI: 10.1039/c5nr05264e] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Nanoparticles (NPs) are considered a promising tool in both diagnosis and therapeutics. Theranostic NPs possess the combined properties of targeted imaging and drug delivery within a single entity. While the categorization of theranostic NPs is based on their structure and composition, the pharmacokinetics of NPs are significantly influenced by the physicochemical properties of theranostic NPs as well as the routes of administration. Consequently, altered pharmacokinetics modify the pharmacodynamic efficacy and toxicity of NPs. Although theranostic NPs hold great promise in nanomedicine and biomedical applications, a lack of understanding persists on the mechanisms of the biodistribution and adverse effects of NPs. To better understand the diagnostic and therapeutic functions of NPs, this review discusses the factors that influence the pharmacokinetics, pharmacodynamics and toxicology of theranostic NPs, along with several strategies for developing novel diagnostic and therapeutic modalities.
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Affiliation(s)
- Homan Kang
- Division of Hematology/Oncology, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA. Phone: 617-667-6024, Fax: 617-667-0214
| | - Shrutika Mintri
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 02115, USA. Phone: 617-373-3214, Fax: 617-373-8886
| | - Archita Venugopal Menon
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 02115, USA. Phone: 617-373-3214, Fax: 617-373-8886
| | - Hea Yeon Lee
- Department of Nanotechnology, Detroit R&D, Inc., Detroit, MI 48201, USA
| | - Hak Soo Choi
- Division of Hematology/Oncology, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA. Phone: 617-667-6024, Fax: 617-667-0214
| | - Jonghan Kim
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 02115, USA. Phone: 617-373-3214, Fax: 617-373-8886
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89
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Das S, Sen B, Debnath N. Recent trends in nanomaterials applications in environmental monitoring and remediation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:18333-18344. [PMID: 26490920 DOI: 10.1007/s11356-015-5491-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 09/21/2015] [Indexed: 06/05/2023]
Abstract
Environmental pollution is one of the greatest problems that the world is facing today, and it is increasing with every passing year and causing grave and irreparable damage to the earth. Nanomaterials, because of their novel physical and chemical characteristics, have great promise to combat environment pollution. Nanotechnology is being used to devise pollution sensor. A variety of materials in their nano form like iron, titanium dioxide, silica, zinc oxide, carbon nanotube, dendrimers, polymers, etc. are increasingly being used to make the air clean, to purify water, and to decontaminate soil. Nanotechnology is also being used to make renewable energy cheaper and more efficient. The use of nanotechnology in agriculture sector will reduce the indiscriminate use of agrochemicals and thus will reduce the load of chemical pollutant. While remediating environment pollution with nanomaterials, it should also be monitored that these materials do not contribute further degradation of the environment. This review will focus broadly on the applications of nanotechnology in the sustainable development with particular emphasis on renewable energy, air-, water-, and soil-remediation. Besides, the review highlights the recent developments in various types of nanomaterials and nanodevices oriented toward pollution monitoring and remediation.
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Affiliation(s)
- Sumistha Das
- Amity Institute of Biotechnology, Amity University Haryana, Gurgaon, 122413, India
| | - Biswarup Sen
- Amity Institute of Biotechnology, Amity University Haryana, Gurgaon, 122413, India
| | - Nitai Debnath
- Amity Institute of Biotechnology, Amity University Haryana, Gurgaon, 122413, India.
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90
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Zhu S, Xu X, Rong R, Li B, Wang X. Evaluation of zinc-doped magnetite nanoparticle toxicity in the liver and kidney of mice after sub-chronic intragastric administration. Toxicol Res (Camb) 2015; 5:97-106. [PMID: 30090329 DOI: 10.1039/c5tx00292c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 11/02/2015] [Indexed: 01/04/2023] Open
Abstract
Super-paramagnetic iron oxide nanoparticles (SPIONs) have been approved for clinical use due to their salient super-paramagnetic properties and low toxicity. Zn2+ doped SPIONs possess significantly higher magnetic susceptibility than that of conventional SPIONs. Here we evaluated the potential toxicity of Zn2+ doped Fe3O4 nanoparticles (Zn0.4Fe2.6O4 NPs) in the liver and kidney of mice after repeated intragastric administration for 30 days. Zn0.4Fe2.6O4 NPs did not cause significant changes in their body weights and the coefficients of the liver and kidney, but increased the levels of Fe and Zn in the two organs. Zn0.4Fe2.6O4 NP induced slight oxidative stress in the liver and kidney, which could be successfully counteracted by their intrinsic antioxidant systems and had no observable hazardous effects on the histopathology, ultrastructure and functions of the two organs. These results demonstrated that high-performance magnetic Zn0.4Fe2.6O4 NPs did not produce apparent toxicity in the liver and kidney of mice even after sub-chronic intragastric administration. In addition, Zn2+ doping not only markedly enhanced magnetic susceptibility of Zn0.4Fe2.6O4 NPs but also significantly increased the stability of Zn0.4Fe2.6O4 NPs in biological conditions, making them appropriate for use in magnetic resonance imaging and drug delivery by the oral route.
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Affiliation(s)
- Shanshan Zhu
- Department of Chemistry , University of Science and Technology of China , Hefei , 230026 , P. R. China . ; ; Tel: +86 551 63603214
| | - Xiaolong Xu
- Department of Chemistry , University of Science and Technology of China , Hefei , 230026 , P. R. China . ; ; Tel: +86 551 63603214
| | - Rui Rong
- Department of Chemistry , University of Science and Technology of China , Hefei , 230026 , P. R. China . ; ; Tel: +86 551 63603214
| | - Bing Li
- Department of Chemistry , University of Science and Technology of China , Hefei , 230026 , P. R. China . ; ; Tel: +86 551 63603214
| | - Xue Wang
- Department of Chemistry , University of Science and Technology of China , Hefei , 230026 , P. R. China . ; ; Tel: +86 551 63603214
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91
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Ge X, Ke PC, Davis TP, Ding F. A Thermodynamics Model for the Emergence of a Stripe-like Binary SAM on a Nanoparticle Surface. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:4894-9. [PMID: 26191774 PMCID: PMC4592462 DOI: 10.1002/smll.201501049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 05/27/2015] [Indexed: 05/25/2023]
Abstract
It has been under debate if a self-assembled monolayer (SAM) with two immiscible ligands of different chain lengths and/or bulkiness can form a stripe-like pattern on a nanoparticle (NP) surface. The entropic gain upon such pattern formation due to difference in chain lengths and/or bulkiness has been proposed as the driving force in literature. Using atomistic discrete molecular dynamics simulations it is shown that stripe-like pattern could indeed emerge, but only for a subset of binary SAM systems. In addition to entropic contributions, the formation of a striped pattern also strongly depends upon interligand interactions governed by the physicochemical properties of the ligand constituents. Due to the interplay between entropy and enthalpy, a binary SAM system can be categorized into three different types depending on whether and under what condition a striped pattern can emerge. The results help clarify the ongoing debate and our proposed principle can aid in the engineering of novel binary SAMs on a NP surface.
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Affiliation(s)
- Xinwei Ge
- Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, USA
| | - Pu Chun Ke
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Thomas P. Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
- Department of Chemistry, Warwick University, Coventry, CV4 7AL, United Kingdom
| | - Feng Ding
- Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, USA
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92
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Cui L, Wang Y, Gao L, Hu L, Wei Q, Du B. Removal of Hg(II) from aqueous solution by resin loaded magnetic β-cyclodextrin bead and graphene oxide sheet: Synthesis, adsorption mechanism and separation properties. J Colloid Interface Sci 2015; 456:42-9. [DOI: 10.1016/j.jcis.2015.06.007] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2015] [Revised: 06/02/2015] [Accepted: 06/02/2015] [Indexed: 10/23/2022]
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93
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New synthesis and biodistribution of the D-amino acid oxidase-magnetic nanoparticle system. Future Sci OA 2015; 1:FSO67. [PMID: 28031918 PMCID: PMC5138019 DOI: 10.4155/fso.15.67] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 07/15/2015] [Indexed: 01/04/2023] Open
Abstract
Background: Application of nanoenzymes, based on D-amino acid oxidase (DAAO) conjugated to magnetic nanoparticles (NPs), as anticancer system requires improvement of the synthesis protocol and in vivo distribution evaluation. Results: A new and more efficient synthesis via EDC-NHS produced an Fe3O4NP-APTES-DAAO system with a specific activity of 7 U/mg NPs. IR spectroscopy showed that all Fe3O4 NP sites are saturated with APTES and all available NH2 sites with DAAO. The acute cytotoxicity of the new system does not differ from that of the previous one. In vivo experiments showed that the system did not cause adverse effects, cross the brain–blood barrier and accumulate in the heart. Conclusions: Our results support the possibility to use enzymes conjugated to magnetic NPs for cancer treatment. Besides, we think that enzymes and other biological molecules efficiently conjugated to magnetic NPs might constitute a category of ‘bionanoparticles’ to be exploited, not only in medical, but also in industrial biotechnology. Lay abstract: We have linked magnetic nanoparticles to D-amino acid oxidase, an enzyme capable of producing, in the presence of its substrate, reactive oxygen species. The scope is to use the magnetic properties of the enzyme-nanoparticle system to direct it to a desired area where its cytotoxicity can be controlled by the addition of exogenous substrate. Besides the possible applications in cancer therapy, we think that enzymes and other biological molecules linked to magnetic nanoparticles might also be exploited in industrial biotechnology.
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94
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A convenient phase transfer protocol to functionalize gold nanoparticles with short alkylamine ligands. J Colloid Interface Sci 2015; 460:164-72. [PMID: 26319333 DOI: 10.1016/j.jcis.2015.08.054] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 07/17/2015] [Accepted: 08/23/2015] [Indexed: 12/31/2022]
Abstract
HYPOTHESIS Aqueous citrate-stabilized gold nanoparticles (Au NPs) cannot be directly transferred from water to an immiscible organic solution using short alkyl ligands. However, Au NPs can be transferred from water to a water-organic interface if chemical and mechanical inputs are used to modify the interfacial energy and interfacial area. Ligand exchange can then take place at this interface. After separating the particles from the liquids, they can be transferred to a different organic phase. EXPERIMENTS Hexane, alkylamine, and acetone were added to aqueous citrate-stabilized Au NPs to form a film at the system interfaces. After removing the liquid phases, Au NPs were readily redispersed into tetrahydrofuran (THF). The size and shape of the transferred Au NPs were evaluated by transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS). FINDINGS Au NPs with 13nm diameter are readily segregated from water with the aid of short alkylamine ligands. They form a thin film at the water/organic solvent interface, rendering them easy to separate from the liquid phases and possible to redisperse into another organic solvent. After the phase transfer process, Au NPs were functionalized with short amine ligands. In addition, the shape and size of Au NPs were preserved. The short amine-protected Au NPs in THF can stay stable for up to 27days or longer.
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95
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Petzoldt M, Eschenbaum C, Schwaebel ST, Broedner K, Lemmer U, Hamburger M, Bunz UHF. A Biphasic Mercury-Ion Sensor: Exploiting Microfluidics to Make Simple Anilines Competitive Ligands. Chemistry 2015; 21:14297-300. [DOI: 10.1002/chem.201502736] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Indexed: 11/09/2022]
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96
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Zhang Y, Xie J, Liu Y, Pang P, Feng L, Wang H, Wu Z, Yang W. Simple and signal-off electrochemical biosensor for mercury(II) based on thymine-mercury-thymine hybridization directly on graphene. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.04.152] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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97
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Yu J, Chu X, Hou Y. Stimuli-responsive cancer therapy based on nanoparticles. Chem Commun (Camb) 2015; 50:11614-30. [PMID: 25058003 DOI: 10.1039/c4cc03984j] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Nanoparticles (NPs) have recently been well investigated for cancer therapy. Among them, those that are responsive to internal or external stimuli are promising due to their flexibility. In this feature article, we provide an overview on stimuli-sensitive cancer therapy, using pH- and reduction-sensitive NPs, as well as light- and magnetic field-responsive NPs.
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Affiliation(s)
- Jing Yu
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China.
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98
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Manna D, Udayabhaskararao T, Zhao H, Klajn R. Orthogonal Light-Induced Self-Assembly of Nanoparticles using Differently Substituted Azobenzenes. Angew Chem Int Ed Engl 2015; 54:12394-7. [DOI: 10.1002/anie.201502419] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Indexed: 11/09/2022]
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99
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Manna D, Udayabhaskararao T, Zhao H, Klajn R. Orthogonal Light-Induced Self-Assembly of Nanoparticles using Differently Substituted Azobenzenes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502419] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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100
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Peng E, Wang F, Zheng B, Li SFY, Xue JM. Engineered water-soluble two-dimensional magnetic nanocomposites: towards highly magnetic relaxometric properties. NANOSCALE 2015; 7:7819-7832. [PMID: 25848729 DOI: 10.1039/c5nr00810g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Water dispersible two-dimensional magnetic nanocomposites are formed by phase-transferring hydrophobic manganese-doped ferrite nanoparticles (MFPs) into aqueous solvent using a one-step simple approach involving only graphene oxide (GO) as the phase transfer agent. The resultant hydrophilic magnetic nanocomposites (MFNs) are surprisingly stable in the aqueous phase despite its large hydrodynamic size (dhyd). Because of its unique construct that promotes water accessibility towards the MFP core, large MFNs loaded with an 18 nm MFP core (MFN-18; dhyd = 577.9 nm) exhibits transverse relaxivity (r2) up to ∼6.8 times (r2 = 800.8 mM [Mn + Fe](-1) s(-1)) higher than the typical individually coated MFP-18 with amphiphilic brush copolymers (r2 = 117.3 mM [Mn + Fe](-1) s(-1)). Meanwhile, the overall nanocomposites dhyd can be further reduced by employing a smaller pre-sonicated GO sheet phase transfer agent. As a result of using small GO sheets with enhanced hydrophilicity, the r2 of small MFN-18* nanocomposites (dhyd = 224.9 nm) increases by approximately 37% (r2 = 1097.4 mM [Mn + Fe](-1) s(-1)) as compared to larger MFN-18. From a simple comparative study among various magnetic nanocomposites involving a MFP-18 core, the high MFN-18 r2 relaxivity value can be attributed to enhanced water diffusion and exchange due to the GO sheet, allowing better interaction between magnetic the MFP core and water protons. The proposed method can be readily extended to convert other types of hydrophobic nanoparticles into water-dispersible nanocomposites.
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Affiliation(s)
- Erwin Peng
- Department of Materials Science and Engineering, Faculty of Engineering, National University of Singapore (NUS), 7 Engineering Drive 1, Singapore 117574.
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