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Gökdere B, Üzer A, Durmazel S, Erçağ E, Apak R. Titanium dioxide nanoparticles-based colorimetric sensors for determination of hydrogen peroxide and triacetone triperoxide (TATP). Talanta 2019; 202:402-410. [PMID: 31171201 DOI: 10.1016/j.talanta.2019.04.071] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 04/26/2019] [Accepted: 04/28/2019] [Indexed: 11/28/2022]
Abstract
Due to its relatively simple preparation and readily available precursors, determination of triacetone triperoxide (TATP) by portable devices has become important. In this work, two different titanium dioxide nanoparticles (TiO2NPs)-based colorimetric sensors based on complex formation on the solid surface were developed for determination of H2O2 and TATP. The first sensor, (3-aminopropyl)triethoxysilane (APTES) modified-TiO2NPs-based paper sensor (APTES@TiO2NPs), exploits peroxo-titanate binary complex formation between APTES@TiO2NPs and H2O2 on chromatographic paper. The second sensor, 4-(2-pyridylazo)-resorcinol-modified-TiO2NPs-based solid sensor (PAR@TiO2NPs), relies on the formation of a ternary complex between Ti(IV), PAR and H2O2. The developed sensors were also applied to TATP determination after acidic hydrolysis of samples to H2O2. The limits of detection (LODs) of APTES@TiO2NPs-based paper sensor were 3.14 × 10-4 and 5.13 × 10-4 mol L-1 for H2O2 and TATP, respectively, whereas the LODs of PAR@TiO2NPs solid sensor were 6.06 × 10-7 and 3.54 × 10-7 mol L-1 for H2O2 and TATP, respectively. Possible interferences of common soil ions, passenger belongings used as camouflage materials during public transport (e.g., detergent, sweetener, acetylsalicylic acid and paracetamol-caffeine based analgesic drugs) and of other explosives were examined. The developed methods were statistically validated using t- and F- tests against the titanyl sulfate (TiOSO4) colorimetric literature method.
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Affiliation(s)
- Bahar Gökdere
- Analytical Chemistry Division, Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpasa, 34320 Avcilar, Istanbul, Turkey
| | - Ayşem Üzer
- Analytical Chemistry Division, Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpasa, 34320 Avcilar, Istanbul, Turkey
| | - Selen Durmazel
- Analytical Chemistry Division, Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpasa, 34320 Avcilar, Istanbul, Turkey; Department of Chemistry, Institute of Graduate Studies, Istanbul University-Cerrahpasa, 34320, Avcilar, Istanbul, Turkey
| | - Erol Erçağ
- Aytar Caddesi, Fecri Ebcioğlu Sokak, No. 6/8, Levent, Istanbul, 34340, Turkey
| | - Reşat Apak
- Analytical Chemistry Division, Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpasa, 34320 Avcilar, Istanbul, Turkey; Turkish Academy of Sciences (TUBA), Piyade St. No. 27, Çankaya, Ankara, 06690, Turkey.
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102
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A Dual Ligand Sol⁻Gel Organic-Silica Hybrid Monolithic Capillary for In-Tube SPME-MS/MS to Determine Amino Acids in Plasma Samples. Molecules 2019; 24:molecules24091658. [PMID: 31035579 PMCID: PMC6540176 DOI: 10.3390/molecules24091658] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 04/17/2019] [Accepted: 04/24/2019] [Indexed: 11/17/2022] Open
Abstract
This work describes the direct coupling of the in-tube solid-phase microextraction (in-tube SPME) technique to a tandem mass spectrometry system (MS/MS) to determine amino acids (AA) and neurotransmitters (NT) (alanine, serine, isoleucine, leucine, aspartic acid, glutamic acid, lysine, methionine, tyrosine, and tryptophan) in plasma samples from schizophrenic patients. An innovative organic-silica hybrid monolithic capillary with bifunctional groups (amino and cyano) was developed and evaluated as an extraction device for in-tube SPME. The morphological and structural aspects of the monolithic phase were evaluated by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), nitrogen sorption experiments, X-ray diffraction (XRD) analyses, and adsorption experiments. In-tube SPME-MS/MS conditions were established to remove matrix, enrich analytes (monolithic capillary) and improve the sensitivity of the MS/MS system. The proposed method was linear from 45 to 360 ng mL-1 for alanine, from 15 to 300 ng mL-1 for leucine and isoleucine, from 12 to 102 ng mL-1 for methionine, from 10 to 102 ng mL-1 for tyrosine, from 9 to 96 ng mL-1 for tryptophan, from 12 to 210 ng mL-1 for serine, from 12 to 90 ng mL-1 for glutamic acid, from 12 to 102 ng mL-1 for lysine, and from 6 to 36 ng mL-1 for aspartic acid. The precision of intra-assays and inter-assays presented CV values ranged from 1.6% to 14.0%. The accuracy of intra-assays and inter-assays presented RSE values from -11.0% to 13.8%, with the exception of the lower limit of quantification (LLOQ) values. The in-tube SPME-MS/MS method was successfully applied to determine the target AA and NT in plasma samples from schizophrenic patients.
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103
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Amine-functionalized graphene oxide nanosheets (AFGONs): an efficient bifunctional catalyst for selective formation of 1,4-dihydropyridines, acridinediones and polyhydroquinolines. Mol Divers 2019; 24:283-294. [PMID: 30955149 DOI: 10.1007/s11030-019-09949-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 03/27/2019] [Indexed: 10/27/2022]
Abstract
We report here selective formation of functionalized 1,4-dihydropyridines (DHP), acridinediones and polyhydroquinolines in high yields using amine-functionalized graphene oxide nanosheets (AFGONs) as the bifunctional catalyst. The method overcomes the limitations of previous protocols affording a mixture of DHP and pyridine derivatives using graphene oxide as the catalyst. The mild reaction conditions are found compatible with a wide range of functional groups. It is presumed that a cooperative effect between the acidic and basic functionalities present in AFGONs may have exerted high catalytic efficiency as well as prevented further oxidation to pyridine derivatives. A plausible mechanism is proposed on the basis of some control experiments. The reactions can be scaled up conveniently, and the catalyst can be recycled for five consecutive runs without loss of its activity.
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104
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Dukenbayev K, Korolkov IV, Tishkevich DI, Kozlovskiy AL, Trukhanov SV, Gorin YG, Shumskaya EE, Kaniukov EY, Vinnik DA, Zdorovets MV, Anisovich M, Trukhanov AV, Tosi D, Molardi C. Fe₃O₄ Nanoparticles for Complex Targeted Delivery and Boron Neutron Capture Therapy. NANOMATERIALS 2019; 9:nano9040494. [PMID: 30935156 PMCID: PMC6523109 DOI: 10.3390/nano9040494] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 03/17/2019] [Accepted: 03/22/2019] [Indexed: 01/11/2023]
Abstract
Magnetic Fe3O4 nanoparticles (NPs) and their surface modification with therapeutic substances are of great interest, especially drug delivery for cancer therapy, including boron-neutron capture therapy (BNCT). In this paper, we present the results of boron-rich compound (carborane borate) attachment to previously aminated by (3-aminopropyl)-trimethoxysilane (APTMS) iron oxide NPs. Fourier transform infrared spectroscopy with Attenuated total reflectance accessory (ATR-FTIR) and energy-dispersive X-ray analysis confirmed the change of the element content of NPs after modification and formation of new bonds between Fe3O4 NPs and the attached molecules. Transmission (TEM) and scanning electron microscopy (SEM) showed Fe3O4 NPs’ average size of 18.9 nm. Phase parameters were studied by powder X-ray diffraction (XRD), and the magnetic behavior of Fe3O4 NPs was elucidated by Mössbauer spectroscopy. The colloidal and chemical stability of NPs was studied using simulated body fluid (phosphate buffer—PBS). Modified NPs have shown excellent stability in PBS (pH = 7.4), characterized by XRD, Mössbauer spectroscopy, and dynamic light scattering (DLS). Biocompatibility was evaluated in-vitro using cultured mouse embryonic fibroblasts (MEFs). The results show us an increasing of IC50 from 0.110 mg/mL for Fe3O4 NPs to 0.405 mg/mL for Fe3O4-Carborane NPs. The obtained data confirm the biocompatibility and stability of synthesized NPs and the potential to use them in BNCT.
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Affiliation(s)
- Kanat Dukenbayev
- School of Engineering, Nazarbayev University, 010000 Nur-Sultan, Kazakhstan.
| | - Ilya V Korolkov
- The Institute of Nuclear Physics, 050032 Almaty, Kazakhstan.
- L.N. Gumilyov Eurasian National University, 010008 Nur-Sultan, Kazakhstan.
| | - Daria I Tishkevich
- Laboratory of Magnetic Films Physics, Cryogenic Research Department, Scientific-Practical Materials Research Centre, National Academy of Sciences of Belarus, 220072 Minsk, Belarus.
- Laboratory of Single crystal growth, South Ural State University, 454080 Chelyabinsk, Russia.
| | - Artem L Kozlovskiy
- The Institute of Nuclear Physics, 050032 Almaty, Kazakhstan.
- L.N. Gumilyov Eurasian National University, 010008 Nur-Sultan, Kazakhstan.
| | - Sergey V Trukhanov
- Laboratory of Magnetic Films Physics, Cryogenic Research Department, Scientific-Practical Materials Research Centre, National Academy of Sciences of Belarus, 220072 Minsk, Belarus.
- Laboratory of Single crystal growth, South Ural State University, 454080 Chelyabinsk, Russia.
| | - Yevgeniy G Gorin
- The Institute of Nuclear Physics, 050032 Almaty, Kazakhstan.
- L.N. Gumilyov Eurasian National University, 010008 Nur-Sultan, Kazakhstan.
| | - Elena E Shumskaya
- Laboratory of Magnetic Films Physics, Cryogenic Research Department, Scientific-Practical Materials Research Centre, National Academy of Sciences of Belarus, 220072 Minsk, Belarus.
| | - Egor Y Kaniukov
- Laboratory of Magnetic Films Physics, Cryogenic Research Department, Scientific-Practical Materials Research Centre, National Academy of Sciences of Belarus, 220072 Minsk, Belarus.
- Laboratory of Single crystal growth, South Ural State University, 454080 Chelyabinsk, Russia.
- Department of Electronic Materials Technology, National University of Science and Technology MISiS, 119049 Moscow, Russia.
| | - Denis A Vinnik
- Laboratory of Single crystal growth, South Ural State University, 454080 Chelyabinsk, Russia.
| | - Maxim V Zdorovets
- The Institute of Nuclear Physics, 050032 Almaty, Kazakhstan.
- L.N. Gumilyov Eurasian National University, 010008 Nur-Sultan, Kazakhstan.
- Ural Federal University named after the First President of Russia B.N. Yeltsin, 620075 Yekaterinburg, Russia.
| | - Marina Anisovich
- Republican Unitary Enterprise "Scientific-Practical Centre of Hygiene", 220012 Minsk, Belarus.
| | - Alex V Trukhanov
- Laboratory of Magnetic Films Physics, Cryogenic Research Department, Scientific-Practical Materials Research Centre, National Academy of Sciences of Belarus, 220072 Minsk, Belarus.
- Laboratory of Single crystal growth, South Ural State University, 454080 Chelyabinsk, Russia.
- Department of Electronic Materials Technology, National University of Science and Technology MISiS, 119049 Moscow, Russia.
| | - Daniele Tosi
- School of Engineering, Nazarbayev University, 010000 Nur-Sultan, Kazakhstan.
| | - Carlo Molardi
- School of Engineering, Nazarbayev University, 010000 Nur-Sultan, Kazakhstan.
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105
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Diaz-Galvez KR, Teran-Saavedra NG, Burgara-Estrella AJ, Fernandez-Quiroz D, Silva-Campa E, Acosta-Elias M, Sarabia-Sainz HM, Pedroza-Montero MR, Sarabia-Sainz JA. Specific capture of glycosylated graphene oxide by an asialoglycoprotein receptor: a strategic approach for liver-targeting. RSC Adv 2019; 9:9899-9906. [PMID: 35520911 PMCID: PMC9062377 DOI: 10.1039/c8ra09732a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 01/30/2019] [Indexed: 11/21/2022] Open
Abstract
In this work, we report the evaluation of lactosylated graphene oxide (GO-AL) as a potential drug carrier targeted at an asialoglycoprotein receptor (ASGPR) from hepatic cancer cells. Structural-modification, safety evaluation, and functional analysis of GO-AL were performed. The structure and morphology of the composite were analyzed by scanning electron microscopy (SEM) and atomic force microscopy (AFM), while Raman and FTIR spectroscopy were used to track the chemical modification. For the safe application of GO-AL, an evaluation of the cytotoxic effect, hemolytic properties, and specific interactions of the glycoconjugate were also studied. SEM and AFM analysis of the GO showed graphene sheets with a layer size of 2-3 nm, though a few of them reached 4 nm. The Raman spectra presented characteristic peaks of graphene oxide at 1608 cm-1 and 1350 cm-1, corresponding to G and D bands, respectively. Besides, Si-O peaks for the APTES conjugates of GO were identified by FTIR spectroscopy. No cytotoxic or hemolytic effects were observed for GO samples, thus proving their biocompatibility. The interaction of Ricinus communis lectin confirmed that GO-AL has a biorecognition capability and an exposed galactose structure. This biorecognition capability was accompanied by the determination of the specific absorption of lactosylated GO by HepG2 cells mediated through the asialoglycoprotein receptor. The successful conjugation, hemolytic safety, and specific recognition described here for lactosylated GO indicate its promise as an efficient drug-delivery vehicle to hepatic tissue.
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Affiliation(s)
- Kevin R. Diaz-Galvez
- Departamento de Investigación en Polímeros y Materiales, Universidad de SonoraHermosilloMexico
| | | | | | | | - Erika Silva-Campa
- Departamento de Investigación en Física, Universidad de SonoraHermosilloMexico
| | - Monica Acosta-Elias
- Departamento de Investigación en Física, Universidad de SonoraHermosilloMexico
| | - Hector M. Sarabia-Sainz
- Departamento de Ciencias del Deporte y de la Actividad Física, Universidad de SonoraHermosilloMexico
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106
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Peng Y, Xue B, Song Y, Wang J, Niu M. Preparation of a novel phosphorus‐containing organosilicon and its effect on the flame retardant and smoke suppression of polyethylene terephthalate. POLYM ADVAN TECHNOL 2019. [DOI: 10.1002/pat.4561] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yun Peng
- College of Textile EngineeringTaiyuan University of Technology Yuci 030600 China
- Key Laboratory of Interface Science and Engineering in Advanced MaterialsTaiyuan University of Technology, Ministry of Education Taiyuan 030024 China
| | - Baoxia Xue
- College of Textile EngineeringTaiyuan University of Technology Yuci 030600 China
- Key Laboratory of Interface Science and Engineering in Advanced MaterialsTaiyuan University of Technology, Ministry of Education Taiyuan 030024 China
| | - Yinghao Song
- College of Textile EngineeringTaiyuan University of Technology Yuci 030600 China
- Key Laboratory of Interface Science and Engineering in Advanced MaterialsTaiyuan University of Technology, Ministry of Education Taiyuan 030024 China
| | - Jie Wang
- College of Textile EngineeringTaiyuan University of Technology Yuci 030600 China
- Key Laboratory of Interface Science and Engineering in Advanced MaterialsTaiyuan University of Technology, Ministry of Education Taiyuan 030024 China
| | - Mei Niu
- College of Textile EngineeringTaiyuan University of Technology Yuci 030600 China
- Key Laboratory of Interface Science and Engineering in Advanced MaterialsTaiyuan University of Technology, Ministry of Education Taiyuan 030024 China
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107
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Arulrajan AC, Ramasamy DL, Sillanpää M, van der Wal A, Biesheuvel PM, Porada S, Dykstra JE. Exceptional Water Desalination Performance with Anion-Selective Electrodes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1806937. [PMID: 30624840 DOI: 10.1002/adma.201806937] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 11/30/2018] [Indexed: 05/12/2023]
Abstract
Capacitive deionization (CDI) typically uses one porous carbon electrode that is cation adsorbing and one that is anion adsorbing. In 2016, Smith and Dmello proposed an innovative CDI cell design based on two cation-selective electrodes and a single anion-selective membrane, and thereafter this design was experimentally validated by various authors. In this design, anions pass through the membrane once, and desalinated water is continuously produced. In the present work, this idea is extended, and it is experimentally shown that also a choice for anion-selective electrodes, in combination with a cation-selective membrane, leads to a functional cell design that continuously desalinates water. Anion-selective electrodes are obtained by chemical modification of the carbon electrode with (3-aminopropyl)triethoxysilane. After chemical modification, the activated carbon electrode shows a substantial reduction of the total pore volume and Brunauer-Emmett-Teller (BET) surface area, but nevertheless maintains excellent CDI performance, which is for the first time that a low-porosity carbon electrode is demonstrated as a promising material for CDI.
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Affiliation(s)
- Antony C Arulrajan
- Department of Environmental Technology, Wageningen University, Bornse Weilanden 9, 6708, WG, Wageningen, The Netherlands
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911, MA, Leeuwarden, The Netherlands
| | - Deepika L Ramasamy
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911, MA, Leeuwarden, The Netherlands
- Department of Green Chemistry, Lappeenranta University of Technology, Sammonkatu 12, 50130, Mikkeli, Finland
| | - Mika Sillanpää
- Department of Green Chemistry, Lappeenranta University of Technology, Sammonkatu 12, 50130, Mikkeli, Finland
| | - Albert van der Wal
- Department of Environmental Technology, Wageningen University, Bornse Weilanden 9, 6708, WG, Wageningen, The Netherlands
| | - P Maarten Biesheuvel
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911, MA, Leeuwarden, The Netherlands
| | - Slawomir Porada
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911, MA, Leeuwarden, The Netherlands
- Soft Matter, Fluidics and Interfaces Group, Faculty of Science and Technology, University of Twente, Meander ME 314, 7500, AE, Enschede, The Netherlands
| | - Jouke E Dykstra
- Department of Environmental Technology, Wageningen University, Bornse Weilanden 9, 6708, WG, Wageningen, The Netherlands
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108
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Gorman J, Pandya R, Allardice JR, Price MB, Schmidt TW, Friend RH, Rao A, Davis NJLK. Excimer Formation in Carboxylic Acid-Functionalized Perylene Diimides Attached to Silicon Dioxide Nanoparticles. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2019; 123:3433-3440. [PMID: 30906497 PMCID: PMC6428145 DOI: 10.1021/acs.jpcc.8b12061] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 01/22/2019] [Indexed: 05/13/2023]
Abstract
The creation of artificial light-harvesting complexes involves the ordered arrangement of chromophores in space. To guarantee efficient energy-transfer processes, organic dyes must be brought into close proximity, often leading to aggregation and the formation of excimer states. In recent years, the attachment of ligand-based chromophores to nanoparticles has also generated interest in relation to improved solar harvesting and spin-dependent electronic interactions such as singlet fission and upconversion. We explore the covalent attachment of two novel perylene-diimide (PDI) carboxylic acid ligands to silicon dioxide nanoparticles. This allows us to study electronic interactions between the ligands when attached to nanoparticles because these cannot couple to the wide band gap silicon dioxide. One of the synthesized PDI ligands has sterically hindering phenols in the bay position and undergoes minimal optical changes upon attachment, but the other forms an excimer state with a red-shifted and long-lived florescence. As such, molecular structure changes offer a method to tune weak and strong interactions between ligand layers on nanocrystal surfaces.
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Affiliation(s)
- Jeffrey Gorman
- Cavendish
Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, U.K.
| | - Raj Pandya
- Cavendish
Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, U.K.
| | - Jesse R. Allardice
- Cavendish
Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, U.K.
| | - Michael B. Price
- School
of Chemical and Physical Sciences, Victoria
University of Wellington, Wellington 6140, New Zealand
| | - Timothy W. Schmidt
- ARC
Centre of Excellence in Exciton Science, School of Chemistry, UNSW Sydney, Sydney NSW 2052, Australia
| | - Richard H. Friend
- Cavendish
Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, U.K.
| | - Akshay Rao
- Cavendish
Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, U.K.
| | - Nathaniel J. L. K. Davis
- School
of Chemical and Physical Sciences, Victoria
University of Wellington, Wellington 6140, New Zealand
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109
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Guo S, Jacroux T, Ivory CF, Li L, Dong WJ. Immunobinding-induced alteration in the electrophoretic mobility of proteins: An approach to studying the preconcentration of an acidic protein under cationic isotachophoresis. Electrophoresis 2019; 40:1314-1321. [PMID: 30656700 DOI: 10.1002/elps.201800441] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 01/05/2019] [Accepted: 01/06/2019] [Indexed: 01/28/2023]
Abstract
The objective of this study is to explore an approach for analyzing negatively charged proteins using paper-based cationic ITP. The rationale of electrophoretic focusing the target protein with negative charges under unfavorable cationic ITP condition is to modify the electrophoretic mobility of the target protein through antigen-antibody immunobinding. Cationic ITP was performed on a paper-based analytical device that was fabricated using fiberglass paper. The paper matrix was modified with (3-aminopropyl)trimethoxysilane to minimize sample attraction to the surface for cationic ITP. Negatively charged BSA was used as the model target protein for the cationic ITP experiments. No electrophoretic mobility was observed for BSA-only samples during cationic ITP experimental condition. However, the presence of a primary antibody to BSA significantly improved the electrokinetic behavior of the target protein. Adding a secondary antibody conjugated with amine-rich quantum dots to the sample further facilitated the concentrating effect of ITP, reduced experiment time, and elevated the stacking ratio. Under our optimized experimental conditions, the cationic ITP-based paper device electrophoretically stacked 94% of loaded BSA in less than 7 min. Our results demonstrate that the technique has a broad potential for rapid and cost-effective isotachphoretic analysis of multiplex protein biomarkers in serum samples at the point of care.
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Affiliation(s)
- Shuang Guo
- Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, USA
| | - Thomas Jacroux
- Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, USA
| | - Cornelius F Ivory
- Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, USA
| | - Lei Li
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, USA
| | - Wen-Ji Dong
- Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, USA.,Department of Integrative Physiology and Neuroscience, Washington State University, Pullman, WA, USA
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110
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van den Biggelaar L, Soumillion P, Debecker DP. Biocatalytic transamination in a monolithic flow reactor: improving enzyme grafting for enhanced performance. RSC Adv 2019; 9:18538-18546. [PMID: 35515229 PMCID: PMC9064773 DOI: 10.1039/c9ra02433f] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 06/05/2019] [Indexed: 12/01/2022] Open
Abstract
Transaminases were immobilized onto macrocellular silica monoliths and used for carrying a continuous flow mode transamination reaction. Monoliths were prepared via an emulsion-templated sol–gel method and functionalised by amino-moieties (3-aminopropyl-triethoxysilane, APTES) in order to covalently immobilize the enzymes, using glutaraldehyde as a cross-linking agent. In order to obtain higher performance and improved reproducibility, we investigate the key parameters of APTES functionalisation and of enzyme grafting. Four functionalisation protocols were studied. We show that enhancing the homogeneity of the APTES grafting and controlling the moisture level during functionalisation led to a 3-fold increase in activity as compared to the previously reported data, and greatly improved the reproducibility. Additionally, we report a strong beneficial effect of running the enzyme immobilisation at room temperature instead of 4 °C, further enhancing the obtained activity. Finally, the popular method which consists of stabilizing the covalent attachment of the enzyme by reducing the imine bonds formed between the enzyme and the functionalised surface was investigated. We highlight a strong enzyme deactivation caused by cyanoborohydride, making this strategy irrelevant in this case. The improvements presented here led to more active macrocellular monoliths, of general interest for continuous flow mode biocatalysis. Higher performance can be obtained in flow biocatalytic transamination reactions if the key parameters of support functionalization and of enzyme grafting are controlled.![]()
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Affiliation(s)
| | - Patrice Soumillion
- Louvain Institute of Biomolecular Science and Technology
- UCLouvain
- 1348 Louvain-la-Neuve
- Belgium
| | - Damien P. Debecker
- Institute of Condensed Matter and Nanosciences
- UCLouvain
- 1348 Louvain-la-Neuve
- Belgium
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111
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Itzhaik Alkotzer Y, Grzegorzewski F, Belausov E, Zelinger E, Mechrez G. In situ interfacial surface modification of hydrophilic silica nanoparticles by two organosilanes leading to stable Pickering emulsions. RSC Adv 2019; 9:39611-39621. [PMID: 35541385 PMCID: PMC9076063 DOI: 10.1039/c9ra07597f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 11/25/2019] [Indexed: 11/21/2022] Open
Abstract
Oil-in-water Pickering emulsions are stabilized by in situ functionalization of hydrophilic silica nanoparticles with two organosilane precursors of opposite polarity, dodecyltriethoxysilane (DTES) and 3-(aminopropyl)triethoxysilane (APTES), in a two-step emulsification procedure. The modification of the silica nanoparticles is verified by Fourier transform infrared (FTIR) spectroscopy analysis. The stabilization of the oil droplets by silica is confirmed by tracing the localization of the colloidal silica nanoparticles at the oil–water interface, as observed by confocal fluorescence microscopy. In comparison to modification of the silica nanoparticles prior to the emulsification, in situ functionalization of silica with both organosilanes achieves enhanced emulsion stability and homogeneity, by forming a polysiloxane network between the silica nanoparticles, through polymerization of the organosilanes in the presence of water. The polysiloxane network fixes the silica in place as solid shells around the emulsion droplets, in structures called colloidosomes. These colloidosome shell structures are visualized using confocal microscopy and cryogenic scanning electron microscopy, the latter method successfully enables the direct observation of the silica nanoparticles embedded in the polysiloxane matrix around the oil droplets. Stabilizing the Pickering emulsion droplets and forming silica-based colloidosome shells is dependent on the extent of the hydrolysis and polycondensation reaction of the two organosilanes. Oil-in-water Pickering emulsions are stabilized by in situ functionalization of hydrophilic silica nanoparticles with two organosilane precursors of opposite polarity in a two-step emulsification procedure.![]()
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Affiliation(s)
- Yafit Itzhaik Alkotzer
- Department of Food Sciences
- Institute of Postharvest and Food Sciences
- Agricultural Research Organization (ARO)
- Volcani Center
- Rishon Letzion 7505101
| | - Franziska Grzegorzewski
- Department of Food Sciences
- Institute of Postharvest and Food Sciences
- Agricultural Research Organization (ARO)
- Volcani Center
- Rishon Letzion 7505101
| | - Eduard Belausov
- Department of Ornamental Plants and Agricultural Biotechnology
- Institute of Plant Sciences
- Agricultural Research Organization (ARO)
- Volcani Center
- Rishon Letzion 7505101
| | - Einat Zelinger
- The Interdepartmental Equipment Unit
- The Robert H. Smith Faculty of Agriculture
- Food and Environment
- The Hebrew University of Jerusalem
- Rehovot 7610001
| | - Guy Mechrez
- Department of Food Sciences
- Institute of Postharvest and Food Sciences
- Agricultural Research Organization (ARO)
- Volcani Center
- Rishon Letzion 7505101
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112
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Wang WY, Kala K, Wei TC. Solvent-Dependent Adhesion Strength of Electroless Deposited Ni-P Layer on an Amino-Terminated Silane Compound-Modified Si Wafer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:13597-13602. [PMID: 30350707 DOI: 10.1021/acs.langmuir.8b01927] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Amino-terminated silane compound modification was wet-processed on a silicon wafer using four different solvents to investigate the property of the self-assembled monolayer (SAM) and its influence on the adhesion of electroless deposited nickel-phosphorus (Ni-P) films. Analyzed by various tools including dynamic light scattering, the atomic force microscope, X-ray photoelectron spectroscopy, inductively coupled plasma with mass spectroscopy, a proper link between the processing solvent and SAM quality is established. It is found that at least the chemical compatibility, the polarity, and the acidity of solvents can affect the final morphology of the resultant SAM. Unlike toluene and ethanol that are most frequently chosen in literature, we conclude that isopropyl alcohol (IPA) is a superior solvent for amino-terminated silane compounds. Owing to the good SAM quality formed in IPA, the adhesion of electroless deposited Ni-P films is largely strengthened, even as high as the bulk strength of silicon wafers.
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Affiliation(s)
- Wei-Yen Wang
- Department of Chemical Engineering , National Tsing-Hua University , 300 Hsinchu , Taiwan
| | - Kannankutty Kala
- Department of Chemical Engineering , National Tsing-Hua University , 300 Hsinchu , Taiwan
| | - Tzu-Chien Wei
- Department of Chemical Engineering , National Tsing-Hua University , 300 Hsinchu , Taiwan
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113
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Li G, He Y, Zhu P, Zhao T, Sun R, Lu D, Wong CP. Tailored surface chemistry of SiO2 particles with improved rheological, thermal-mechanical and adhesive properties of epoxy based composites for underfill applications. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.09.063] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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114
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Yaakov N, Ananth Mani K, Felfbaum R, Lahat M, Da Costa N, Belausov E, Ment D, Mechrez G. Single Cell Encapsulation via Pickering Emulsion for Biopesticide Applications. ACS OMEGA 2018; 3:14294-14301. [PMID: 30411063 PMCID: PMC6217693 DOI: 10.1021/acsomega.8b02225] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 10/11/2018] [Indexed: 05/15/2023]
Abstract
A new approach for single cell microencapsulation in an oil-in-water (o/w) Pickering emulsion is presented. The water/paraffin emulsions were stabilized by amine-functionalized silica nanoparticles. The droplet size of the emulsions was highly tunable, and ranged from 1 to 30 μm in diameter. The controllable droplet size along with the high colloidal stability of the Pickering emulsionswas harnessed to obtain single cell microencapsulation. Successful encapsulation of the conidia entomopathogenic fungus Metarhizium brunneum by the studied Pickering emulsions was confirmed via confocal laser scanning microscopy. The resulting systems were implemented to develop a novel biopesticide formulation for arthropod pest control. The conidia incorporated in the emulsions were applied to Ricinus communis leaves by spray assay. After drying of the emulsion, a silica-based honeycomb-like structure with an ordered hierarchical porosity is formed. This structure preserves the individual cell encapsulation. The successful single cell encapsulation has led to a high distribution of conidia cells on the leaves. The Pickering emulsion-based formulation exhibited significantly higher pest control activity against Spodoptera littoralis larvae compared to the control systems, thus making it a promising, cost-effective, innovative approach for tackling the pest control challenge.
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Affiliation(s)
- Noga Yaakov
- Department
of Food Quality & Safety, Institute for Postharvest
and Food Sciences, Department of Entomology and Nematology, Institute of Plant Protection, and Department of
Ornamental Plants and Agricultural Biotechnology, Institute of Plant
Science, Volcani Center, ARO, Rishon LeZion 7528809, Israel
| | - Karthik Ananth Mani
- Department
of Food Quality & Safety, Institute for Postharvest
and Food Sciences, Department of Entomology and Nematology, Institute of Plant Protection, and Department of
Ornamental Plants and Agricultural Biotechnology, Institute of Plant
Science, Volcani Center, ARO, Rishon LeZion 7528809, Israel
| | - Reut Felfbaum
- Department
of Food Quality & Safety, Institute for Postharvest
and Food Sciences, Department of Entomology and Nematology, Institute of Plant Protection, and Department of
Ornamental Plants and Agricultural Biotechnology, Institute of Plant
Science, Volcani Center, ARO, Rishon LeZion 7528809, Israel
- The
Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Magen Lahat
- Department
of Food Quality & Safety, Institute for Postharvest
and Food Sciences, Department of Entomology and Nematology, Institute of Plant Protection, and Department of
Ornamental Plants and Agricultural Biotechnology, Institute of Plant
Science, Volcani Center, ARO, Rishon LeZion 7528809, Israel
| | - Noam Da Costa
- Department
of Food Quality & Safety, Institute for Postharvest
and Food Sciences, Department of Entomology and Nematology, Institute of Plant Protection, and Department of
Ornamental Plants and Agricultural Biotechnology, Institute of Plant
Science, Volcani Center, ARO, Rishon LeZion 7528809, Israel
| | - Eduard Belausov
- Department
of Food Quality & Safety, Institute for Postharvest
and Food Sciences, Department of Entomology and Nematology, Institute of Plant Protection, and Department of
Ornamental Plants and Agricultural Biotechnology, Institute of Plant
Science, Volcani Center, ARO, Rishon LeZion 7528809, Israel
| | - Dana Ment
- Department
of Food Quality & Safety, Institute for Postharvest
and Food Sciences, Department of Entomology and Nematology, Institute of Plant Protection, and Department of
Ornamental Plants and Agricultural Biotechnology, Institute of Plant
Science, Volcani Center, ARO, Rishon LeZion 7528809, Israel
| | - Guy Mechrez
- Department
of Food Quality & Safety, Institute for Postharvest
and Food Sciences, Department of Entomology and Nematology, Institute of Plant Protection, and Department of
Ornamental Plants and Agricultural Biotechnology, Institute of Plant
Science, Volcani Center, ARO, Rishon LeZion 7528809, Israel
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115
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Khuat TTH, Liang L, Phan TT, Mizutani G, Rutt HN. Sum frequency generation study of immobilized 3-aminopropyltriethoxysilane self-assembled layer on Si(111) substrates. SURF INTERFACE ANAL 2018. [DOI: 10.1002/sia.6570] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Thi Thu Hien Khuat
- Applied Physics Department; Japan Advanced Institute of Science and Technology; Nomi Japan
| | - Lin Liang
- Applied Physics Department; Japan Advanced Institute of Science and Technology; Nomi Japan
| | - Trong Tue Phan
- Applied Physics Department; Japan Advanced Institute of Science and Technology; Nomi Japan
| | - Goro Mizutani
- Applied Physics Department; Japan Advanced Institute of Science and Technology; Nomi Japan
| | - Harvey N. Rutt
- School of Electronic and Computer Science; University of Southampton; Southampton UK
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116
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Li J, Cha R, Mou K, Zhao X, Long K, Luo H, Zhou F, Jiang X. Nanocellulose-Based Antibacterial Materials. Adv Healthc Mater 2018; 7:e1800334. [PMID: 29923342 DOI: 10.1002/adhm.201800334] [Citation(s) in RCA: 102] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 05/18/2018] [Indexed: 11/12/2022]
Abstract
In recent years, nanocellulose-based antimicrobial materials have attracted a great deal of attention due to their unique and potentially useful features. In this review, several representative types of nanocellulose and modification methods for antimicrobial applications are mainly focused on. Recent literature related with the preparation and applications of nanocellulose-based antimicrobial materials is reviewed. The fabrication of nanocellulose-based antimicrobial materials for wound dressings, drug carriers, and packaging materials is the focus of the research. The most important additives employed in the preparation of nanocellulose-based antimicrobial materials are presented, such as antibiotics, metal, and metal oxide nanoparticles, as well as chitosan. These nanocellulose-based antimicrobial materials can benefit many applications including wound dressings, drug carriers, and packaging materials. Finally, the challenges of industrial production and potentials for development of nanocellulose-based antimicrobial materials are discussed.
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Affiliation(s)
- Juanjuan Li
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes; National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences (Beijing); Beijing 100083 China
- Beijing Engineering Research Center for BioNanotechnology and CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety; CAS Center for Excellence in Nanoscience; National Center for NanoScience and Technology; Beijing 100190 China
| | - Ruitao Cha
- Beijing Engineering Research Center for BioNanotechnology and CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety; CAS Center for Excellence in Nanoscience; National Center for NanoScience and Technology; Beijing 100190 China
| | - Kaiwen Mou
- CAS Key Laboratory of Bio-based Materials; Qingdao Institute of Bioenergy and Bioprocess Technology; University of Chinese Academy of Sciences; Qingdao 266101 China
| | - Xiaohui Zhao
- Beijing Engineering Research Center for BioNanotechnology and CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety; CAS Center for Excellence in Nanoscience; National Center for NanoScience and Technology; Beijing 100190 China
| | - Keying Long
- Beijing Engineering Research Center for BioNanotechnology and CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety; CAS Center for Excellence in Nanoscience; National Center for NanoScience and Technology; Beijing 100190 China
| | - Huize Luo
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes; National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences (Beijing); Beijing 100083 China
| | - Fengshan Zhou
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes; National Laboratory of Mineral Materials; School of Materials Science and Technology; China University of Geosciences (Beijing); Beijing 100083 China
| | - Xingyu Jiang
- Beijing Engineering Research Center for BioNanotechnology and CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety; CAS Center for Excellence in Nanoscience; National Center for NanoScience and Technology; Beijing 100190 China
- Sino-Danish College, University of Chinese Academy of Sciences; Beijing 100049 China
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117
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Zhou H, Liu J, Liu H, Zheng Z. Compact dual-fiber surface-enhanced Raman scattering sensor with monolayer gold nanoparticles self-assembled on optical fiber. APPLIED OPTICS 2018; 57:7931-7937. [PMID: 30462062 DOI: 10.1364/ao.57.007931] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 08/17/2018] [Indexed: 06/09/2023]
Abstract
Employing a self-assembly method and dual-fiber structure, a compact, low-cost, highly sensitive, fast surface-enhanced Raman scattering (SERS) optical fiber sensor was realized. Through detecting a SERS signal of 10 ppm rhodamine B analyte, sensor parameters such as coupling angle, fiber types, and corresponding glass substrate structure were optimized. The ratio of the SERS signal intensity to excitation light residual peak intensity was used as a significant parameter during the optimization process. Sensor characteristics such as the SERS signal dependence on excitation power, stability related to excitation time, and reusability were studied. Its compatibility in size with microfluidic structure would make it a prospective candidate for integrating into a microfluidic chip.
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118
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Hu Z, Lu S, Huang X, Li J, Duan Y, Yan L, Yao Y, Liao X. Molybdenum anchored on NH2
-modified spherical SiO2
: A highly efficient and stable catalyst for oxidative desulfurization of fuel oil. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4521] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Zhen Hu
- College of Chemical Engineering and Materials Science; Tianjin University of Science and Technology; Tianjin China
| | - Shuxiang Lu
- College of Chemical Engineering and Materials Science; Tianjin University of Science and Technology; Tianjin China
| | - Xiaoqiao Huang
- PetroChina Fuel Oil Company Limited Research Institute; Beijing China
| | - Jianxin Li
- PetroChina Fuel Oil Company Limited Research Institute; Beijing China
| | - Yongsheng Duan
- PetroChina Fuel Oil Company Limited Research Institute; Beijing China
| | - Lijun Yan
- Petrochemical Research Institute; PetroChina Company Limited; Beijing China
| | - Yue Yao
- College of Chemical Engineering and Materials Science; Tianjin University of Science and Technology; Tianjin China
| | - Xiaoyuan Liao
- College of Chemical Engineering and Materials Science; Tianjin University of Science and Technology; Tianjin China
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119
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Mani KA, Yaakov N, Itzhaik Alkotzer Y, Zelikman E, Mechrez G. A Robust Fabrication Method for Amphiphilic Janus Particles via Immobilization on Polycarbonate Microspheres. Polymers (Basel) 2018; 10:E900. [PMID: 30960825 PMCID: PMC6403569 DOI: 10.3390/polym10080900] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 07/29/2018] [Accepted: 08/08/2018] [Indexed: 11/16/2022] Open
Abstract
Immobilizing particles on beads, fibers, or filaments, when only one side is exposed to the reaction medium and therefore can be selectively functionalized, is a scalable and easy to control strategy for the fabrication of amphiphilic Janus particles. Here we describe a new, robust method for the fabrication of amphiphilic Janus particles based on immobilization of polymethylsilsesquioxane (PMSQ) particles on polycarbonate (PC), a high impact-resistance polymer with superior mechanical properties. The immobilization of the particles on the PC microspores is performed via inverse solvent displacement method. PMSQ particles are added to a PC solution in tetrahydrofuran (THF), a good solvent for PC. The solution is then precipitated by the introduction of aqueous surfactant solution (antisolvent for PC) under an ultrasonic field. It is important to note that THF and water are miscible and do not form emulsion. During precipitation, PMSQ particles are assembled onto the surface of the PC spherical precipitates/microspheres. The exposed hemispheres of the PMSQ particles are then selectively silanized by (3-Aminopropyl)triethoxysilane (APTES) to introduce amine groups on their surface. To increase the polarity of the functionalized hemispheres, the amine groups are further modified to introduce carboxyl groups. SEM characterization confirms the fine embedment of PMSQ particles onto the PC microspheres. Covalent attachment of silica nanoparticles (NPs) to the functionalized hemispheres of the resulting particles along with fluorescent confocal microscopy conclusively prove the successful fabrication of amphiphilic Janus particles. The immobilization of particles onto highly rigid polymeric microspheres such as PC may pave the way for the development of a robust fabrication procedure with high resistance to temperature fluctuations and harsh mixing conditions that can arise during preparation. This method can be implemented toward a large variety of other synthetic commercial polymers such as polyamide, polyether sulfones, Polyether, ether ketone, or similar.
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Affiliation(s)
- Karthik Ananth Mani
- Department of Food Quality & Safety, Institute for Postharvest and Food Sciences, Volcani Center, ARO, 68 HaMaccabim Road, 7505101 Rishon LeZion, Israel.
| | - Noga Yaakov
- Department of Food Quality & Safety, Institute for Postharvest and Food Sciences, Volcani Center, ARO, 68 HaMaccabim Road, 7505101 Rishon LeZion, Israel.
| | - Yafit Itzhaik Alkotzer
- Department of Food Quality & Safety, Institute for Postharvest and Food Sciences, Volcani Center, ARO, 68 HaMaccabim Road, 7505101 Rishon LeZion, Israel.
| | - Evgeni Zelikman
- Additives and Compounds Division, Tosaf Group, Alon Tavor Industrial Zone, 1812601 Afula, Israel.
| | - Guy Mechrez
- Department of Food Quality & Safety, Institute for Postharvest and Food Sciences, Volcani Center, ARO, 68 HaMaccabim Road, 7505101 Rishon LeZion, Israel.
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120
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Lara GG, Andrade GF, Cipreste MF, da Silva WM, Gastelois PL, Gomes DA, de Miranda MC, de Almeida Macedo WA, Neves MJ, de Sousa EMB. Protection of normal cells from irradiation bystander effects by silica-flufenamic acid nanoparticles. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:130. [PMID: 30074096 DOI: 10.1007/s10856-018-6134-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 07/17/2018] [Indexed: 06/08/2023]
Abstract
The development of a myriad of nanoparticles types has opened new possibilities for the diagnostics and treatment of many diseases, especially for cancer. However, most of the researches done so far do not focus on the protection of normal cells surrounding a tumor from irradiation bystander effects that might lead to cancer recurrence. Gap-junctions are known to be involved in this process, which leads to genomic instability of neighboring normal cells, and flufenamic acid (FFA) is included in a new group of gap-junction blockers recently discovered. The present work explores the use of mesoporous silica nanoparticles MCM-41 functionalized with 3-Aminopropyltriethoxysilane (APTES) for anchoring the flufenamic acid for its prolonged and controlled release and protection from radiation bystander effects. MCM-41 and functionalized samples were structurally and chemically characterized with multiple techniques. The biocompatibility of all samples was tested in a live/dead assay performed in cultured MRC-5 and HeLa cells. HeLa cells cultured were exposed to 50 Gy of gamma-rays and the media transferred to fibroblast cells cultured separately. Our results show that MCM-41 and functionalized samples have high biocompatibility with MCR-5 and HeLa cells, and most importantly, the FFA delivered by these NPs was able to halt apoptosis, one of main bystander effects.
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Affiliation(s)
- Giovanna Gomes Lara
- Centro de Desenvolvimento da Tecnologia Nuclear, CDTN, Belo Horizonte, 31270-901, MG, Brazil
| | | | | | | | - Pedro Lana Gastelois
- Centro de Desenvolvimento da Tecnologia Nuclear, CDTN, Belo Horizonte, 31270-901, MG, Brazil
| | - Dawidson Assis Gomes
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, UFMG, Belo Horizonte, Brazil
| | | | | | - Maria Jose Neves
- Centro de Desenvolvimento da Tecnologia Nuclear, CDTN, Belo Horizonte, 31270-901, MG, Brazil
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121
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Li H, Huang Y, Chen C, Xiao A, Hou G, Huang Y, Feng X, Guan B. Real-Time Cellular Cytochrome C Monitoring through an Optical Microfiber: Enabled by a Silver-Decorated Graphene Nanointerface. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1701074. [PMID: 30128226 PMCID: PMC6096990 DOI: 10.1002/advs.201701074] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Revised: 04/15/2018] [Indexed: 05/28/2023]
Abstract
The translocation of cytochrome c (cyt c) from mitochondria and out of cell is an important signal of cell apoptosis. Monitoring this process extracellularly without invasion and cytotoxicity to cells is of great importance to understand certain diseases at the cellular level; however, it requires sensors with ultrahigh sensitivity and miniature size. This study reports an optical microfiber aptasensor with a silver-decorated graphene (Ag@RGO) nanointerface for real-time cellular cyt c monitoring. Owing to an interfacial sensitization effect coupled with the plasmonic electromagnetic enhancement of silver nanoparticles and chemical enhancement of graphene platforms, which enhances the energy density on microfiber surface obviously, the lowest limit of detection achieved is 6.82 × 10-17 m, which is approximately five orders of magnitude lower than those of existing methods. This microfiber successfully detects the ultralow concentrations of cyt c present during the initial stage of apoptosis in situ. As the microfiber functionalized by Ag@RGO nanointerface can be varied to meet any specific detection objective, this work opens up new opportunities to quantitatively monitor biological functions occurring at the cellular level.
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Affiliation(s)
- Hongtao Li
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and CommunicationsInstitute of Photonics TechnologyJinan UniversityGuangzhou510632China
| | - Yunyun Huang
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and CommunicationsInstitute of Photonics TechnologyJinan UniversityGuangzhou510632China
| | - Chaoyan Chen
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and CommunicationsInstitute of Photonics TechnologyJinan UniversityGuangzhou510632China
| | - Aoxiang Xiao
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and CommunicationsInstitute of Photonics TechnologyJinan UniversityGuangzhou510632China
| | - Guanhua Hou
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and CommunicationsInstitute of Photonics TechnologyJinan UniversityGuangzhou510632China
| | - Yugang Huang
- School of Pharmaceutical SciencesGuangzhou Medical UniversityGuangzhou511436China
| | - Xinhuan Feng
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and CommunicationsInstitute of Photonics TechnologyJinan UniversityGuangzhou510632China
| | - Bai‐Ou Guan
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and CommunicationsInstitute of Photonics TechnologyJinan UniversityGuangzhou510632China
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122
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Zainuddin NH, Chee HY, Ahmad MZ, Mahdi MA, Abu Bakar MH, Yaacob MH. Sensitive Leptospira DNA detection using tapered optical fiber sensor. JOURNAL OF BIOPHOTONICS 2018; 11:e201700363. [PMID: 29570957 DOI: 10.1002/jbio.201700363] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Revised: 03/16/2018] [Accepted: 03/19/2018] [Indexed: 06/08/2023]
Abstract
This paper presents the development of tapered optical fiber sensor to detect a specific Leptospira bacteria DNA. The bacteria causes Leptospirosis, a deadly disease but with common early flu-like symptoms. Optical single mode fiber (SMF) of 125 μm diameter is tapered to produce 12 μm waist diameter and 15 cm length. The novel DNA-based optical fiber sensor is functionalized by incubating the tapered region with sodium hydroxide (NaOH), (3-Aminopropyl) triethoxysilane and glutaraldehyde. Probe DNA is immobilized onto the tapered region and subsequently hybridized by its complementary DNA (cDNA). The transmission spectra of the DNA-based optical fiber sensor are measured in the 1500 to 1600 nm wavelength range. It is discovered that the shift of the wavelength in the SMF sensor is linearly proportional with the increase in the cDNA concentrations from 0.1 to 1.0 nM. The sensitivity of the sensor toward DNA is measured to be 1.2862 nm/nM and able to detect as low as 0.1 fM. The sensor indicates high specificity when only minimal shift is detected for non-cDNA testing. The developed sensor is able to distinguish between actual DNA of Leptospira serovars (Canicola and Copenhageni) against Clostridium difficile (control sample) at very low (femtomolar) target concentrations.
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Affiliation(s)
- Nurul H Zainuddin
- Department of Computer and Communication Systems, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Wireless and Photonic Networks Research Centre (WiPNET), Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Hui Y Chee
- Department of Microbiology and Parasitology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Muhammad Z Ahmad
- Biotechnology and Nanotechnology Research Center, Malaysian Agricultural Research and Development Institute (MARDI), Serdang, Selangor, Malaysia
| | - Mohd A Mahdi
- Department of Computer and Communication Systems, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Wireless and Photonic Networks Research Centre (WiPNET), Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Muhammad H Abu Bakar
- Department of Computer and Communication Systems, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Wireless and Photonic Networks Research Centre (WiPNET), Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mohd H Yaacob
- Department of Computer and Communication Systems, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Wireless and Photonic Networks Research Centre (WiPNET), Universiti Putra Malaysia, Serdang, Selangor, Malaysia
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123
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Bone S, Alum A, Markovski J, Hristovski K, Bar-Zeev E, Kaufman Y, Abbaszadegan M, Perreault F. Physisorption and chemisorption of T4 bacteriophages on amino functionalized silica particles. J Colloid Interface Sci 2018; 532:68-76. [PMID: 30077067 DOI: 10.1016/j.jcis.2018.07.107] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 07/23/2018] [Accepted: 07/24/2018] [Indexed: 11/16/2022]
Abstract
Bacteriophages, or phages, are receiving increasing interest as recognition tools for the design of bioactive surfaces. However, to maintain the activity of surface-bound phages, the immobilization strategy must provide the right orientation and not compromise the phages' integrity. The objectives of this study were to characterize the phage sorption capacity and the immobilized phage activity for aminated silica particles functionalized with T4 phages. Two functionalization strategies were compared; physisorption, based on electrostatic adhesion, and chemisorption, where the phage and the particle are coupled using a carbodiimide cross-linker. We report that chemisorption, at maximum adsorption conditions on 1 µm particles, yielded 16 functional phages per particle, which is 2.5 times more than by the physisorption method. Particle diameter is shown to have an important impact on phage attachment and 1.8 µm particles were found to have ∼4 times more phages per surface area than 0.5 µm particles. Higher surface coverage is attributed to the lower steric hindrance on bigger particles. These findings provide important guidelines for the design of phage-functionalized particles for environmental, biomedical, or sensing applications.
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Affiliation(s)
- Stephanie Bone
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287-3005, United States; Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Arizona State University, Tempe, AZ, United States
| | - Absar Alum
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287-3005, United States; National Science Foundation Water & Environmental Technology Center, United States
| | - Jasmina Markovski
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Arizona State University, Tempe, AZ, United States; The Polytechnic School, Arizona State University, Mesa, AZ 85212, United States
| | - Kiril Hristovski
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Arizona State University, Tempe, AZ, United States; The Polytechnic School, Arizona State University, Mesa, AZ 85212, United States
| | - Edo Bar-Zeev
- Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, 8499000, Israel
| | - Yair Kaufman
- Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, 8499000, Israel
| | - Morteza Abbaszadegan
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287-3005, United States; National Science Foundation Water & Environmental Technology Center, United States
| | - François Perreault
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287-3005, United States; Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Arizona State University, Tempe, AZ, United States.
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Ching JY, Lee CH, Khung YL. Bioactivating Silicon (100) Surfaces with Novel UV Grafting of Cyclopropylamine for Promotion of Cell Adhesion. MATERIALS 2018; 11:ma11050713. [PMID: 29724039 PMCID: PMC5978090 DOI: 10.3390/ma11050713] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 04/23/2018] [Accepted: 04/29/2018] [Indexed: 01/16/2023]
Abstract
In this report, utraviolent (UV) photoionization of cyclopropylamine on silicon (100) hydride was employed to examine interfacing with three different epithelial cell types (MDA-MB 231, AGS and HEC1A). The cellular viability using this novel methodology had been quantified to evaluate the bioactivating potential of this ring-opening chemistry when compared to standardized controls (aminopropyltriethoxylamine, collagen and poly-L lysine). X-ray photospectroscopy (XPS) and atomic force microscopy (AFM) were used to characterize surface chemistry composition, while cell viability and confocal microscopy after 24 h of incubation were performed. Based on the results acquired from this novel ring-opening metastasis process, the promotion of cell adhesion and viability was found to be higher using this chemistry when compared to other conventional control groups, even for the collagen coating, without any observable issues of cytotoxicity.
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Affiliation(s)
- Jing Yuan Ching
- Department of Biological Science and Technology, China Medical University, No.91 Hsueh-Shih Road, Taichung 404, Taiwan.
| | - Chieh-Hua Lee
- Department of Biological Science and Technology, China Medical University, No.91 Hsueh-Shih Road, Taichung 404, Taiwan.
| | - Yit Lung Khung
- Department of Biological Science and Technology, China Medical University, No.91 Hsueh-Shih Road, Taichung 404, Taiwan.
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125
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Preparation of a novel polysiloxane and its synergistic effect with ammonium polyphosphate on the flame retardancy of polypropylene. Polym Degrad Stab 2018. [DOI: 10.1016/j.polymdegradstab.2018.02.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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126
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Jain A, Fournier PGJ, Mendoza-Lavaniegos V, Sengar P, Guerra-Olvera FM, Iñiguez E, Kretzschmar TG, Hirata GA, Juárez P. Functionalized rare earth-doped nanoparticles for breast cancer nanodiagnostic using fluorescence and CT imaging. J Nanobiotechnology 2018; 16:26. [PMID: 29566719 PMCID: PMC5863469 DOI: 10.1186/s12951-018-0359-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Accepted: 03/19/2018] [Indexed: 12/31/2022] Open
Abstract
Background Breast cancer is the second leading cause of cancer death among women and represents 14% of death in women around the world. The standard diagnosis method for breast tumor is mammography, which is often related with false-negative results leading to therapeutic delays and contributing indirectly to the development of metastasis. Therefore, the development of new tools that can detect breast cancer is an urgent need to reduce mortality in women. Here, we have developed Gd2O3:Eu3+ nanoparticles functionalized with folic acid (FA), for breast cancer detection. Results Gd2O3:Eu3+ nanoparticles were synthesized by sucrose assisted combustion synthesis and functionalized with FA using EDC-NHS coupling. The FA-conjugated Gd2O3:Eu3+ nanoparticles exhibit strong red emission at 613 nm with a quantum yield of ~ 35%. In vitro cytotoxicity studies demonstrated that the nanoparticles had a negligible cytotoxic effect on normal 293T and T-47D breast cancer cells. Cellular uptake analysis showed significantly higher internalization of FA-conjugated RE nanoparticles into T-47D cells (Folrhi) compared to MDA-MB-231 breast cancer cells (Folrlo). In vivo confocal and CT imaging studies indicated that FA-conjugated Gd2O3:Eu3+ nanoparticles accumulated more efficiently in T-47D tumor xenograft compared to the MDA-MB-231 tumor. Moreover, we found that FA-conjugated Gd2O3:Eu3+ nanoparticles were well tolerated at high doses (300 mg/kg) in CD1 mice after an intravenous injection. Thus, FA-conjugated Gd2O3:Eu3+ nanoparticles have great potential to detect breast cancer. Conclusions Our findings provide significant evidence that could permit the future clinical application of FA-conjugated Gd2O3:Eu3+ nanoparticles alone or in combination with the current detection methods to increase its sensitivity and precision. Electronic supplementary material The online version of this article (10.1186/s12951-018-0359-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Akhil Jain
- Biomedical Innovation Department, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera Ensenada-Tijuana No. 3918, Zona Playitas, C.P. 22860, Ensenada, B.C., Mexico.,Posgrado en Física de Materiales, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera Ensenada-Tijuana No. 3918, Zona Playitas, C.P. 22860, Ensenada, B.C., Mexico.,Universidad Nacional Autónoma de México (UNAM)-Centro de Nanociencias y Nanotecnología (CNyN), Km. 107 Carretera Tijuana-Ensenada, C.P. 22860, Ensenada, B.C., Mexico
| | - Pierrick G J Fournier
- Biomedical Innovation Department, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera Ensenada-Tijuana No. 3918, Zona Playitas, C.P. 22860, Ensenada, B.C., Mexico
| | - Vladimir Mendoza-Lavaniegos
- Departamento de Geología, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera Transpeninsular Ensenada-Tijuana #318, Zona Playitas, C.P. 22860, Ensenada, B.C., Mexico.,Centro Mexicano de Innovación en Energía Geotérmica (CeMIGeo), Rinconada del Pedregal 95, Pedregal Playitas, 22860, Ensenada, Baja California, Mexico
| | - Prakhar Sengar
- Biomedical Innovation Department, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera Ensenada-Tijuana No. 3918, Zona Playitas, C.P. 22860, Ensenada, B.C., Mexico.,Posgrado en Física de Materiales, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera Ensenada-Tijuana No. 3918, Zona Playitas, C.P. 22860, Ensenada, B.C., Mexico.,Universidad Nacional Autónoma de México (UNAM)-Centro de Nanociencias y Nanotecnología (CNyN), Km. 107 Carretera Tijuana-Ensenada, C.P. 22860, Ensenada, B.C., Mexico
| | - Fernando M Guerra-Olvera
- Biomedical Innovation Department, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera Ensenada-Tijuana No. 3918, Zona Playitas, C.P. 22860, Ensenada, B.C., Mexico
| | - Enrique Iñiguez
- Departamento de Geología, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera Transpeninsular Ensenada-Tijuana #318, Zona Playitas, C.P. 22860, Ensenada, B.C., Mexico.,Centro Mexicano de Innovación en Energía Geotérmica (CeMIGeo), Rinconada del Pedregal 95, Pedregal Playitas, 22860, Ensenada, Baja California, Mexico
| | - Thomas G Kretzschmar
- Departamento de Geología, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera Transpeninsular Ensenada-Tijuana #318, Zona Playitas, C.P. 22860, Ensenada, B.C., Mexico.,Centro Mexicano de Innovación en Energía Geotérmica (CeMIGeo), Rinconada del Pedregal 95, Pedregal Playitas, 22860, Ensenada, Baja California, Mexico
| | - Gustavo A Hirata
- Universidad Nacional Autónoma de México (UNAM)-Centro de Nanociencias y Nanotecnología (CNyN), Km. 107 Carretera Tijuana-Ensenada, C.P. 22860, Ensenada, B.C., Mexico
| | - Patricia Juárez
- Biomedical Innovation Department, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera Ensenada-Tijuana No. 3918, Zona Playitas, C.P. 22860, Ensenada, B.C., Mexico.
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127
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Yan Z, Fu L, Yang H, Ouyang J. Amino-functionalized hierarchical porous SiO 2-AlOOH composite nanosheets with enhanced adsorption performance. JOURNAL OF HAZARDOUS MATERIALS 2018; 344:1090-1100. [PMID: 30216968 DOI: 10.1016/j.jhazmat.2017.11.058] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 11/22/2017] [Accepted: 11/29/2017] [Indexed: 06/08/2023]
Abstract
Hierarchical porous SiO2-AlOOH composite nanosheets (HPSA) with a three-dimensional (3D) structure were prepared from two-dimensional (2D) layered mineral kaolinite (A12Si2O5(OH)4) via a template-free structural reorganization method. The obtained material was subjected to homogeneous and effective amino-functionalization by grafting it with (3-aminopropyl) triethoxysilane. Owing to the enhanced 3D hierarchical meso-macroporous structure containing highly dispersed protonated amino groups (NH3+), the as-prepared amino-functionalized HPSA (NH2-HPSA) showed unique adsorption performance towards the congo red anionic dye. It provides feasibilities to fabricate other functional hierarchical porous materials from clay minerals, which can offer potential applications in adsorption, separation, catalysis and other environmental remediation fields.
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Affiliation(s)
- Zhaoli Yan
- Centre for Mineral Materials, School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Hunan Key Lab of Mineral Materials and Application, Central South University, Changsha 410083, China
| | - Liangjie Fu
- Centre for Mineral Materials, School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California, Davis, CA 95616, United States
| | - Huaming Yang
- Centre for Mineral Materials, School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Hunan Key Lab of Mineral Materials and Application, Central South University, Changsha 410083, China; State Key Lab of Powder Metallurgy, Central South University, Changsha 410083, China.
| | - Jing Ouyang
- Centre for Mineral Materials, School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Hunan Key Lab of Mineral Materials and Application, Central South University, Changsha 410083, China.
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128
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Lara GG, Cipreste MF, Andrade GF, Silva WMD, Sousa EMBD. Response of Fibroblasts MRC-5 to Flufenamic Acid-Grafted MCM-41 Nanoparticles. Bioengineering (Basel) 2018; 5:bioengineering5010004. [PMID: 29315235 PMCID: PMC5874870 DOI: 10.3390/bioengineering5010004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 12/26/2017] [Accepted: 01/05/2018] [Indexed: 12/22/2022] Open
Abstract
Recently, flufenamic acid (FFA) was discovered among fenamates as a free radical scavenger and gap junction blocker; however, its effects have only been studied in cancer cells. Normal cells in the surroundings of a tumor also respond to radiation, although they are not hit by it directly. This phenomenon is known as the bystander effect, where response molecules pass from tumor cells to normal ones, through communication channels called gap junctions. The use of the enhanced permeability and retention effect, through which drug-loaded nanoparticles smaller than 200 nm may accumulate around a tumor, can prevent the local side effect upon controlled release of the drug. The present work, aimed at functionalizing MCM-41 (Mobil Composition of Matter No. 41) silica nanoparticles with FFA and determining its biocompatibility with human fibroblasts MRC-5 (Medical Research Council cell strain 5). MCM-41, was synthesized and characterized structurally and chemically, with multiple techniques. The biocompatibility assay was performed by Live/Dead technique, with calcein and propidium–iodide. MRC-5 cells were treated with FFA-grafted MCM-41 for 48 h, and 98% of cells remained viable, without signs of necrosis or morphological changes. The results show the feasibility of MCM-41 functionalization with FFA, and its potential protection of normal cells, in comparison to the role of FFA in cancerous ones.
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Affiliation(s)
- Giovanna Gomes Lara
- Centro de Desenvolvimento da Tecnologia Nuclear-CDTN-Avenida Presidente Antônio Carlos, 6.627-Campus UFMG, Belo Horizonte CEP 31270-901, Minas Gerais, Brazil.
| | - Marcelo Fernandes Cipreste
- Centro de Desenvolvimento da Tecnologia Nuclear-CDTN-Avenida Presidente Antônio Carlos, 6.627-Campus UFMG, Belo Horizonte CEP 31270-901, Minas Gerais, Brazil.
| | - Gracielle Ferreira Andrade
- Centro de Desenvolvimento da Tecnologia Nuclear-CDTN-Avenida Presidente Antônio Carlos, 6.627-Campus UFMG, Belo Horizonte CEP 31270-901, Minas Gerais, Brazil.
| | - Wellington Marcos da Silva
- Centro de Desenvolvimento da Tecnologia Nuclear-CDTN-Avenida Presidente Antônio Carlos, 6.627-Campus UFMG, Belo Horizonte CEP 31270-901, Minas Gerais, Brazil.
| | - Edésia Martins Barros de Sousa
- Centro de Desenvolvimento da Tecnologia Nuclear-CDTN-Avenida Presidente Antônio Carlos, 6.627-Campus UFMG, Belo Horizonte CEP 31270-901, Minas Gerais, Brazil.
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129
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Duong HP, Hung CH, Dao HC, Le MD, Chen CY. Modification of TiO2 nanotubes with 3-aminopropyl triethoxysilane and its performances in nanocomposite coatings. NEW J CHEM 2018. [DOI: 10.1039/c8nj00642c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Improved thermal, mechanical and anticorrosion characteristics of epoxy-based coatings.
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Affiliation(s)
- Hong Phan Duong
- The University of Danang
- University of Science and Technology
- Vietnam
| | - Chia-Hsiang Hung
- Department of Materials Science and Engineering
- National Cheng Kung University
- Tainan 701
- Taiwan
| | | | - Minh Duc Le
- Institute of Occupational Safety and Health & Environmental Protection in Central of VietNam
- Vietnam
| | - Chia-Yun Chen
- Department of Materials Science and Engineering
- National Cheng Kung University
- Tainan 701
- Taiwan
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130
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Delasoie J, Rossier J, Haeni L, Rothen-Rutishauser B, Zobi F. Slow-targeted release of a ruthenium anticancer agent from vitamin B12 functionalized marine diatom microalgae. Dalton Trans 2018; 47:17221-17232. [DOI: 10.1039/c8dt02914h] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Bio-inspired drug capsules: The synthesis of a new vitamin-B12 modified biomaterial with increased static adherence properties toward cancer cell lines, allowed the targeted delivery of a poorly water-soluble ruthenium drug with an unprecedented release profile.
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Affiliation(s)
- Joachim Delasoie
- Department of Chemistry
- Fribourg University
- 1700 Fribourg
- Switzerland
| | - Jérémie Rossier
- Department of Chemistry
- Fribourg University
- 1700 Fribourg
- Switzerland
| | | | | | - Fabio Zobi
- Department of Chemistry
- Fribourg University
- 1700 Fribourg
- Switzerland
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131
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Wright KJ, Oiaidha ZO, Love DP, Aljohani M, Greenway GM, Wadhawan JD. Imaging immunoassay in negative: surface-catalysed chemiluminescence for the detection of pregnancy hormones in artificial saliva. NEW J CHEM 2018. [DOI: 10.1039/c8nj02974a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Before and after exposure to progesterone or œstriol – visualising the extent of antibody/antigen complexation.
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Affiliation(s)
- Kevin J. Wright
- School of Mathematics & Physical Sciences, The University of Hull
- Kingston-upon-Hull HU6 7RX
- UK
| | - Zeid O. Oiaidha
- School of Mathematics & Physical Sciences, The University of Hull
- Kingston-upon-Hull HU6 7RX
- UK
| | - Daniel P. Love
- School of Mathematics & Physical Sciences, The University of Hull
- Kingston-upon-Hull HU6 7RX
- UK
| | - Mohammed Aljohani
- School of Mathematics & Physical Sciences, The University of Hull
- Kingston-upon-Hull HU6 7RX
- UK
- Chemistry Department, College of Science, The University of Taif
- Al Hawiyah
| | - Gillian M. Greenway
- School of Mathematics & Physical Sciences, The University of Hull
- Kingston-upon-Hull HU6 7RX
- UK
| | - Jay D. Wadhawan
- School of Mathematics & Physical Sciences, The University of Hull
- Kingston-upon-Hull HU6 7RX
- UK
- School of Engineering & Computer Science, The University of Hull
- Kingston-upon-Hull HU6 7RX
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132
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Oktay B, Çakmakçi E. DOPO tethered Diels Alder clickable reactive silica nanoparticles for bismaleimide containing flame retardant thiol-ene nanocomposite coatings. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.10.043] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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133
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Huang Y, Ding M, Guo T, Hu D, Cao Y, Jin L, Guan BO. A fiber-optic sensor for neurotransmitters with ultralow concentration: near-infrared plasmonic electromagnetic field enhancement using raspberry-like meso-SiO 2 nanospheres. NANOSCALE 2017; 9:14929-14936. [PMID: 28952636 DOI: 10.1039/c7nr05032a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The feasibility of a localized surface plasmon resonance (LSPR) enhanced sensor based on raspberry-like nanosphere functionalized silica microfibers has been proposed and experimentally demonstrated. The extinction of single Ag (or Au) nanoparticles usually occurs at visible wavelengths. Nevertheless, a LSPR enhancement at near infrared wavelengths has been achieved by constructing raspberry-like meso-SiO2 nanospheres with noble metal nanoparticle cluster coating. The nanosphere coating captures γ-amino-butyric acid (GABA) targets through size selectivity and enhances the sensitivity by the LSPR effect. The gathering of GABA on the sensor surface translates the concentration signal to the information of refractive index (RI). Silica microfiber perceives the RI change and translates it to optical signal. The LSPR effect enhances the optical sensitivity by enhancing the evanescent field on the microfiber surface. This combination presents the lowest limit of detection (LOD) of 10-15 M (three orders lower than that without LSPR enhancement). It could fully afford the detection of ultra-low GABA concentration fluctuation (which is important for determining a variety of neurological and psychiatric disorders). The inherent advantages of the proposed sensors, including their ultra-sensitivity, low cost, light weight, small size and remote operation ability, provide the potential to fully incorporate them into various biomedical applications.
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Affiliation(s)
- Yunyun Huang
- Guangdong Provincial Key laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 210632, China.
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134
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Bagherzadeh M, Karimi H, Amini M. Immobilization of dioxomolybdenum(VI) Schiff base complex on graphene oxide nanosheets and its catalytic activity for oxidation of sulfides. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1383603] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | - Hooman Karimi
- Chemistry Department, Sharif University of Technology, Tehran, Iran
| | - Mojtaba Amini
- Faculty of Science, Department of Chemistry, University of Maragheh, Maragheh, Iran
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135
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Carl AD, Kalan RE, Obayemi JD, Zebaze Kana MG, Soboyejo WO, Grimm RL. Synthesis and Characterization of Alkylamine-Functionalized Si(111) for Perovskite Adhesion With Minimal Interfacial Oxidation or Electronic Defects. ACS APPLIED MATERIALS & INTERFACES 2017; 9:34377-34388. [PMID: 28880534 DOI: 10.1021/acsami.7b07117] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We investigated synthetic strategies for the functionalization of Si(111) surfaces with organic species containing amine moieties. We employed the functionalized surfaces to chemically "glue" perovskites to silicon with efficient electron transfer and minimal oxidation leading to deleterious recombination at the silicon substrate. A two-step halogenation-alkylation reaction produced a mixed allyl-methyl monolayer on Si(111). Subsequent reactions utilized multiple methods of brominating the allyl double bond including reaction with HBr in acetic acid, HBr in THF, and molecular bromine in dichloromethane. Reaction with ammonia in methanol effected conversion of the bromide to the amine. X-ray photoelectron spectroscopy (XPS) quantified chemical states and coverages, transient-microwave photoconductivity ascertained photogenerated carrier lifetimes, atomic force microscopy (AFM) quantified perovskite-silicon adhesion, and nonaqueous photoelectrochemistry explored solar-energy-conversion performance. The HBr bromination followed by the amination yielded a surface with ∼10% amine sites on the Si(111) with minimal oxide and surface recombination velocity values below 120 cm s-1, following extended exposures to air. Importantly, conversion of amine sites to ammonium and deposition of methylammonium lead halide via spin coating and annealing did not degrade carrier lifetimes. AFM experiments quantified adhesion between perovskite films and alkylammonium-functionalized or native-oxide silicon surfaces. Adhesion forces/interactions between the perovskite and the alkylammonium-functionalized films were comparable to the interaction between the perovskite and native-oxide silicon surface. Photoelectrochemistry of perovskite thin films on alkylammonium-functionalized n+-Si showed significantly higher Voc than n+-Si with a native oxide when in contact with a nonaqueous ferrocene+/0 redox couple. We discuss the present results in the context of utilizing molecular organic recognition to attach perovskites to silicon utilizing organic linkers so as to inexpensively modify silicon for future tandem-junction photovoltaics.
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Affiliation(s)
- Alexander D Carl
- Department of Chemistry and Biochemistry, Life Science and Bioengineering Center, Worcester Polytechnic Institute , 100 Institute Road, Worcester, Massachusetts 01609, United States
| | - Roghi E Kalan
- Department of Chemistry and Biochemistry, Life Science and Bioengineering Center, Worcester Polytechnic Institute , 100 Institute Road, Worcester, Massachusetts 01609, United States
| | - John David Obayemi
- Department of Mechanical Engineering, Worcester Polytechnic Institute , 100 Institute Road, Worcester, Massachusetts 01609, United States
| | - Martiale Gaetan Zebaze Kana
- Department of Mechanical Engineering, Worcester Polytechnic Institute , 100 Institute Road, Worcester, Massachusetts 01609, United States
- Department of Materials Science and Engineering, Kwara State University , PMB 1531, Malete, Kwara State 23431, Nigeria
| | - Winston Oluwole Soboyejo
- Department of Mechanical Engineering, Worcester Polytechnic Institute , 100 Institute Road, Worcester, Massachusetts 01609, United States
| | - Ronald L Grimm
- Department of Chemistry and Biochemistry, Life Science and Bioengineering Center, Worcester Polytechnic Institute , 100 Institute Road, Worcester, Massachusetts 01609, United States
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136
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miRNA purification with an optimized PDMS microdevice: Toward the direct purification of low abundant circulating biomarkers. Biophys Chem 2017; 229:142-150. [DOI: 10.1016/j.bpc.2017.04.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 04/24/2017] [Indexed: 12/19/2022]
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137
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Enhancing internalization of silica particles in myocardial cells through surface modification. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017. [DOI: 10.1016/j.msec.2017.05.092] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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138
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Benmouhoub C, Gauthier-Manuel B, Zegadi A, Robert L. A Quantitative Fourier Transform Infrared Study of the Grafting of Aminosilane Layers on Lithium Niobate Surface. APPLIED SPECTROSCOPY 2017; 71:1568-1577. [PMID: 28664784 DOI: 10.1177/0003702817698488] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Due to its impressive optical properties, lithium niobate (LiNbO3) is considered to be one of the most important ferroelectric materials. Its uses in sensing platforms require functionalization at the surface to enable the capture and quantifying of molecules. The current paper aims to demonstrate the covalent bonding of aminosilane layers to the LiNbO3 surface. Fourier transform infrared (FT-IR) analysis reveals the presence of an NbO-Si bond observable as a shoulder at the same wavenumber (975 cm-1) on the surfaces of LiNBO3 as well as on those of Nb2O5, using 3-(aminopropyl)trimethoxysilane (APTMS) or 3-(aminopropyl)methyldimethoxysilane (APDMS) precursors. This covalent bonding is confirmed by the insolubility of the silane coating in dimethyl sulfoxide (DMSO). A kinetic study of the aminosilane layer growth obtained by quantitative FT-IR analysis is also carried out.
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Affiliation(s)
- Chafia Benmouhoub
- 1 Optics and Precision Mechanics Institute, Setif1 University, Algeria
- 2 Femto-st Institute, Franche-Comté University, Besançon, France
- 3 LCCNS, Electronics Dpt, Setif1 University, Algeria
| | | | - Ameur Zegadi
- 3 LCCNS, Electronics Dpt, Setif1 University, Algeria
| | - Laurent Robert
- 4 MN2S Dpt, Femto-st Institute, UMR6174, Besançon, France
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139
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Liu GS, Qiu JS, Xu DH, Zhou X, Zhong D, Shieh HPD, Yang BR. Fabrication of Embedded Silver Nanowires on Arbitrary Substrates with Enhanced Stability via Chemisorbed Alkanethiolate. ACS APPLIED MATERIALS & INTERFACES 2017; 9:15130-15138. [PMID: 28406008 DOI: 10.1021/acsami.7b02458] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We propose a versatile yet practical transferring technique to fabricate a high performance and extremely stable silver nanowire (AgNW) transparent electrode on arbitrary substrates. Hydroxylated poly(ethylene glycol) terephthalate (PET) or poly(dimethylsiloxane) (PDMS) deposited with AgNWs was selectively decorated to lower its polar surface energy, so that the AgNWs were easily and efficiently transferred into an epoxy resin (EPR) as a freestanding film (AgNWs-EPR) or onto various substrates. The AgNWs-EPR capped with alkanethiolate monolayers exhibits high conductivity, low roughness, ultraflexibility, and strong corrosion resistance. Using the transferring process, AgNWs-EPR was successfully constructed on rough, adhesive, flimsy, or complex curved substrates, including PET, thin optically clear adhesive, papers, a beaker, convex spherical PDMS, and leaves. A flexible touch panel enabling multitouch and a curved transparent heater on a beaker were first fabricated by using the composite film. These demonstrations suggest that the proposed technique for AgNWs is a promising strategy toward the next generation of flexible/portable/wearable electronics.
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Affiliation(s)
| | | | | | | | | | - Han-Ping D Shieh
- Department of Photonics and Display Institute, National Chiao Tung University , Taiwan 300, Republic of China
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140
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Okhrimenko DV, Budi A, Ceccato M, Cárdenas M, Johansson DB, Lybye D, Bechgaard K, Andersson MP, Stipp SLS. Hydrolytic Stability of 3-Aminopropylsilane Coupling Agent on Silica and Silicate Surfaces at Elevated Temperatures. ACS APPLIED MATERIALS & INTERFACES 2017; 9:8344-8353. [PMID: 28195455 DOI: 10.1021/acsami.6b14343] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
3-Aminopropylsilane (APS) coupling agent is widely used in industrial, biomaterial, and medical applications to improve adhesion of polymers to inorganic materials. However, during exposure to elevated humidity and temperature, the deposited APS layers can decompose, leading to reduction in coupling efficiency, thus decreasing the product quality and the mechanical strength of the polymer-inorganic material interface. Therefore, a better understanding of the chemical state and stability of APS on inorganic surfaces is needed. In this work, we investigated APS adhesion on silica wafers and compared its properties with those on complex silicate surfaces such as those used by industry (mineral fibers and fiber melt wafers). The APS was deposited from aqueous and organic (toluene) solutions and studied with surface sensitive techniques, including X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), streaming potential, contact angle, and spectroscopic ellipsometry. APS configuration on a model silica surface at a range of coverages was simulated using density functional theory (DFT). We also studied the stability of adsorbed APS during aging at high humidity and elevated temperature. Our results demonstrated that APS layer formation depends on the choice of solvent and substrate used for deposition. On silica surfaces in toluene, APS formed unstable multilayers, while from aqueous solutions, thinner and more stable APS layers were produced. The chemical composition and substrate roughness influence the amount of deposited APS. More APS was deposited and its layers were more stable on fiber melt than on silica wafers. The changes in the amount of adsorbed APS can be successfully monitored by streaming potential. These results will aid in improving industrial- and laboratory-scale APS deposition methods and increasing adhesion and stability, thus increasing the quality and effectiveness of materials where APS is used as a coupling agent.
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Affiliation(s)
- Denis V Okhrimenko
- Nano-Science Center, Department of Chemistry, University of Copenhagen , 2100 Copenhagen OE, Denmark
| | - Akin Budi
- Nano-Science Center, Department of Chemistry, University of Copenhagen , 2100 Copenhagen OE, Denmark
| | - Marcel Ceccato
- Nano-Science Center, Department of Chemistry, University of Copenhagen , 2100 Copenhagen OE, Denmark
| | - Marité Cárdenas
- Nano-Science Center, Department of Chemistry, University of Copenhagen , 2100 Copenhagen OE, Denmark
- Department of Biomedical Sciences and Biofilm Research Center for Biointerfaces, Health & Society, Malmoe University , Malmoe 20500, Sweden
| | - Dorte B Johansson
- ROCKWOOL International A/S , Hovedgaden 584, 2640 Hedehusene, Denmark
| | - Dorthe Lybye
- ROCKWOOL International A/S , Hovedgaden 584, 2640 Hedehusene, Denmark
| | - Klaus Bechgaard
- Nano-Science Center, Department of Chemistry, University of Copenhagen , 2100 Copenhagen OE, Denmark
| | - Martin P Andersson
- Nano-Science Center, Department of Chemistry, University of Copenhagen , 2100 Copenhagen OE, Denmark
| | - Susan L S Stipp
- Nano-Science Center, Department of Chemistry, University of Copenhagen , 2100 Copenhagen OE, Denmark
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141
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Escorihuela J, Pujari SP, Zuilhof H. Organic Monolayers by B(C 6F 5) 3-Catalyzed Siloxanation of Oxidized Silicon Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:2185-2193. [PMID: 28230381 PMCID: PMC5343549 DOI: 10.1021/acs.langmuir.7b00110] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 02/13/2017] [Indexed: 06/01/2023]
Abstract
Inspired by the homogeneous catalyst tris(pentafluorophenyl) borane [B(C6F5)3], which acts as a promotor of Si-H bond activation, we developed and studied a method of modifying silicon oxide surfaces using hydrosilanes with B(C6F5)3 as the catalyst. This dedihydrosiloxanation reaction yields complete surface coverage within 10 min at room temperature. Organic monolayers derived from hydrosilanes with varying carbon chain lengths (C8-C18) were prepared on oxidized Si(111) surfaces, and the thermal and hydrolytic stabilities of the obtained monolayers were investigated in acidic (pH 3) medium, basic (pH 11) medium, phosphate-buffered saline (PBS), and deionized water (neutral conditions) for up to 30 days. DFT calculations were carried out to gain insight into the mechanism, and the computational results support a mechanism involving silane activation with B(C6F5)3. This catalyzed reaction path proceeds through a low-barrier-height transition state compared to the noncatalyzed reaction path.
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Affiliation(s)
- Jorge Escorihuela
- Laboratory
of Organic Chemistry, Wageningen University
and Research, Stippeneng
4, 6708 WE Wageningen, The Netherlands
| | - Sidharam P. Pujari
- Laboratory
of Organic Chemistry, Wageningen University
and Research, Stippeneng
4, 6708 WE Wageningen, The Netherlands
| | - Han Zuilhof
- Laboratory
of Organic Chemistry, Wageningen University
and Research, Stippeneng
4, 6708 WE Wageningen, The Netherlands
- Department
of Chemical and Materials Engineering, King
Abdulaziz University, Jeddah, Saudi Arabia
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142
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Enantioselective Transamination in Continuous Flow Mode with Transaminase Immobilized in a Macrocellular Silica Monolith. Catalysts 2017. [DOI: 10.3390/catal7020054] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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143
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Meroni D, Lo Presti L, Di Liberto G, Ceotto M, Acres RG, Prince KC, Bellani R, Soliveri G, Ardizzone S. A Close Look at the Structure of the TiO 2-APTES Interface in Hybrid Nanomaterials and Its Degradation Pathway: An Experimental and Theoretical Study. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2017; 121:430-440. [PMID: 28191270 PMCID: PMC5295244 DOI: 10.1021/acs.jpcc.6b10720] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 12/09/2016] [Indexed: 05/11/2023]
Abstract
The surface functionalization of TiO2-based materials with alkylsilanes is attractive in several cutting-edge applications, such as photovoltaics, sensors, and nanocarriers for the controlled release of bioactive molecules. (3-Aminopropyl)triethoxysilane (APTES) is able to self-assemble to form monolayers on TiO2 surfaces, but its adsorption geometry and solar-induced photodegradation pathways are not well understood. We here employ advanced experimental (XPS, NEXAFS, AFM, HR-TEM, and FT-IR) and theoretical (plane-wave DFT) tools to investigate the preferential interaction mode of APTES on anatase TiO2. We demonstrate that monomeric APTES chemisorption should proceed through covalent Si-O-Ti bonds. Although dimerization of the silane through Si-O-Si bonds is possible, further polymerization on the surface is scarcely probable. Terminal amino groups are expected to be partially involved in strong charge-assisted hydrogen bonds with surface hydroxyl groups of TiO2, resulting in a reduced propensity to react with other species. Solar-induced mineralization proceeds through preferential cleavage of the alkyl groups, leading to the rapid loss of the terminal NH2 moieties, whereas the Si-bearing head of APTES undergoes slower oxidation and remains bound to the surface. The suitability of employing the silane as a linker with other chemical species is discussed in the context of controlled degradation of APTES monolayers for drug release and surface patterning.
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Affiliation(s)
- Daniela Meroni
- Department
of Chemistry, Università degli Studi
di Milano, Via Golgi
19, 20133 Milano, Italy
- Consorzio INSTM, Via
Giusti 9, 50121 Firenze, Italy
- E-mail:
| | - Leonardo Lo Presti
- Department
of Chemistry, Università degli Studi
di Milano, Via Golgi
19, 20133 Milano, Italy
- Center for Materials
Crystallography, Aarhus University, Langelandsgade 140, DK-8000 Aarhus, Denmark
- E-mail:
| | - Giovanni Di Liberto
- Department
of Chemistry, Università degli Studi
di Milano, Via Golgi
19, 20133 Milano, Italy
| | - Michele Ceotto
- Department
of Chemistry, Università degli Studi
di Milano, Via Golgi
19, 20133 Milano, Italy
- Consorzio INSTM, Via
Giusti 9, 50121 Firenze, Italy
- E-mail:
| | - Robert G. Acres
- Imaging
and Medical
Beamline, Australian Synchrotron, Clayton, Victoria, Australia 3168
| | - Kevin C. Prince
- Elettra-Sincrotrone
Trieste, 34149 Basovizza, Trieste, Italy
- Molecular
Model Discovery Laboratory, Department of Chemistry and Biotechnology, Swinburne University of Technology, Melbourne 3122, Australia
- Istituto Officina
dei Materiali, Consiglio Nazionale delle Ricerche, 34149 Basovizza, Italy
| | - Roberto Bellani
- Department
of Chemistry, Università degli Studi
di Milano, Via Golgi
19, 20133 Milano, Italy
| | - Guido Soliveri
- Department
of Engineering Physics, Polytechnique Montréal, H3T 1J4 Montreal, Canada
| | - Silvia Ardizzone
- Department
of Chemistry, Università degli Studi
di Milano, Via Golgi
19, 20133 Milano, Italy
- Consorzio INSTM, Via
Giusti 9, 50121 Firenze, Italy
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144
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Klaysri R, Tubchareon T, Praserthdam P. One-step synthesis of amine-functionalized TiO2 surface for photocatalytic decolorization under visible light irradiation. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2016.09.027] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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145
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Sathish S, Ricoult SG, Toda-Peters K, Shen AQ. Microcontact printing with aminosilanes: creating biomolecule micro- and nanoarrays for multiplexed microfluidic bioassays. Analyst 2017; 142:1772-1781. [DOI: 10.1039/c7an00273d] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Aqueous based microcontact printing (μCP) to create micro- and nanoarrays of (3-aminopropyl)triethoxysilane (APTES) on glass substrates of microfluidic devices for covalent immobilization of DNA aptamers and antibodies.
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Affiliation(s)
- Shivani Sathish
- Micro/Bio/Nanofluidics Unit
- Okinawa Institute of Science and Technology Graduate University
- Okinawa
- Japan
| | - Sébastien G. Ricoult
- Micro/Bio/Nanofluidics Unit
- Okinawa Institute of Science and Technology Graduate University
- Okinawa
- Japan
| | - Kazumi Toda-Peters
- Micro/Bio/Nanofluidics Unit
- Okinawa Institute of Science and Technology Graduate University
- Okinawa
- Japan
| | - Amy Q. Shen
- Micro/Bio/Nanofluidics Unit
- Okinawa Institute of Science and Technology Graduate University
- Okinawa
- Japan
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146
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Chandra S, Beaune G, Shirahata N, Winnik FM. A one-pot synthesis of water soluble highly fluorescent silica nanoparticles. J Mater Chem B 2017; 5:1363-1370. [DOI: 10.1039/c6tb02813f] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We report a one-pot synthesis of water dispersible fluorescent silica nanoparticles (NPs) functionalized with terminal amine groups, starting from silicon tetrabromide (SiBr4) and aminopropyltriethoxy silane (APTES).
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Affiliation(s)
- Sourov Chandra
- WPI International Centre for Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba 305-0044
- Japan
| | - Grégory Beaune
- WPI International Centre for Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba 305-0044
- Japan
| | - Naoto Shirahata
- WPI International Centre for Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba 305-0044
- Japan
| | - Françoise M. Winnik
- WPI International Centre for Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba 305-0044
- Japan
- Departement de Chimie
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147
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Kim D, Zuidema JM, Kang J, Pan Y, Wu L, Warther D, Arkles B, Sailor MJ. Facile Surface Modification of Hydroxylated Silicon Nanostructures Using Heterocyclic Silanes. J Am Chem Soc 2016; 138:15106-15109. [DOI: 10.1021/jacs.6b08614] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Dokyoung Kim
- Department
of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Jonathan M. Zuidema
- Department
of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Jinyoung Kang
- Department
of Nanoengineering, University of California, San Diego, La Jolla, California 92093, United States
| | - Youlin Pan
- Gelest Inc., 11 East Steel Road, Morrisville, Pennsylvania 19067, United States
| | - Lianbin Wu
- Department
of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
- Key
Laboratory of Organosilicon Chemistry and Material Technology, Hangzhou Normal University, Hangzhou 311121, China
| | - David Warther
- Department
of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Barry Arkles
- Gelest Inc., 11 East Steel Road, Morrisville, Pennsylvania 19067, United States
| | - Michael J. Sailor
- Department
of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
- Department
of Nanoengineering, University of California, San Diego, La Jolla, California 92093, United States
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148
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Arriagada F, Correa O, Günther G, Nonell S, Mura F, Olea-Azar C, Morales J. Morin Flavonoid Adsorbed on Mesoporous Silica, a Novel Antioxidant Nanomaterial. PLoS One 2016; 11:e0164507. [PMID: 27812111 PMCID: PMC5094702 DOI: 10.1371/journal.pone.0164507] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Accepted: 09/26/2016] [Indexed: 12/25/2022] Open
Abstract
Morin (2´,3, 4´,5,7-pentahydroxyflavone) is a flavonoid with several beneficial health effects. However, its poor water solubility and it sensitivity to several environmental factors avoid its use in applications like pharmaceutical and cosmetic. In this work, we synthetized morin-modified mesoporous silica nanoparticles (AMSNPs-MOR) as useful material to be used as potential nanoantioxidant. To achieve this, we characterized its adsorption kinetics, isotherm and the antioxidant capacity as hydroxyl radical (HO•) scavenger and singlet oxygen (1O2) quencher. The experimental data could be well fitted with Langmuir, Freundlich and Temkin isotherm models, besides the pseudo-second order kinetics model. The total quenching rate constant obtained for singlet oxygen deactivation by AMSNPs-MOR was one order of magnitude lower than the morin rate constant reported previously in neat solvents and lipid membranes. The AMSNPs-MOR have good antioxidant properties by itself and exhibit a synergic effect with morin on the antioxidant property against hydroxyl radical. This effect, in the range of concentrations studied, was increased when the amount of morin adsorbed increased.
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Affiliation(s)
- Francisco Arriagada
- Departamento de Ciencias y Tecnología Farmacéuticas, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Sergio Livingstone, 1007, Independencia, Santiago, Chile
| | - Olosmira Correa
- Departamento de Ciencias y Tecnología Farmacéuticas, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Sergio Livingstone, 1007, Independencia, Santiago, Chile
| | - Germán Günther
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Sergio Livingstone, 1007, Independencia, Santiago, Chile
| | - Santi Nonell
- Institut Químic de Sarriá (IQS), University Ramón Llull, Via Augusta, 390, 08017, Barcelona, Spain
| | - Francisco Mura
- Departamento de Química Inorgánica y Analítica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Sergio Livingstone, 1007, Independencia, Santiago, Chile
| | - Claudio Olea-Azar
- Departamento de Química Inorgánica y Analítica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Sergio Livingstone, 1007, Independencia, Santiago, Chile
| | - Javier Morales
- Departamento de Ciencias y Tecnología Farmacéuticas, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Sergio Livingstone, 1007, Independencia, Santiago, Chile
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149
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Hasan A, Pandey LM. Kinetic studies of attachment and re-orientation of octyltriethoxysilane for formation of self-assembled monolayer on a silica substrate. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:423-429. [DOI: 10.1016/j.msec.2016.06.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 05/14/2016] [Accepted: 06/01/2016] [Indexed: 12/01/2022]
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150
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Gold nanoparticle mediated method for spatially resolved deposition of DNA on nano-gapped interdigitated electrodes, and its application to the detection of the human Papillomavirus. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1954-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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