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Cirrincione M, Lucena R, Protti M, Mercolini L, Cárdenas S. Potential of hydrophobic paper-based sorptive phase prepared by in-situ thermal imidization for the extraction of methadone from oral fluid samples. J Chromatogr A 2022; 1675:463166. [PMID: 35623193 DOI: 10.1016/j.chroma.2022.463166] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 05/19/2022] [Accepted: 05/19/2022] [Indexed: 11/17/2022]
Abstract
Paper-based sorptive phases (PSPs) are functional planar materials with a demonstrated potential in analytical sample preparation. This article describes the synthesis of a polyimide coated paper by an in-situ imidization at a high temperature. Polyimides (PI) are synthesized in two subsequent steps where a hydrophilic polymer, in this case, poly(amic acid) (PAA), is formed as an intermediate product. PAA is finally transformed into hydrophobic PI by thermal curing at 180 °C. The synthesis of PI-paper takes advantage of this two-step procedure. In the first stage, a segment of filter paper is immersed into an aqueous PAA solution. After the solvent evaporation, the paper is heated at 180 °C for 1 h inducing the formation of the hydrophobic PI over the cellulose fibers. Infrared spectroscopy has been used to characterize the synthesized materials by defining a coverage factor F. The hydrophobicity of the materials has been studied using an aqueous methylene blue solution as a marker. To fully demonstrate the usefulness of the material in the sample preparation field, the extraction of methadone from oral fluid (OF) samples has been considered as a model analytical problem. The main variables affecting the synthesis (PAA concentration on the precursor solution and number of dips) and the extraction (elution and extraction times) have been fully evaluated. Working under the optimum conditions, a limit of quantification of 9 µg/L, intraday and interday precision better than 14.6%, and accuracy in the range of 87-108% were obtained.
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Affiliation(s)
- Marco Cirrincione
- Affordable and Sustainable Sample Preparation (AS(2)P) Research Group, Departamento de Química Analítica, Instituto Universitario de Investigación en Química Fina y Nanoquímica (IUNAN), Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie, E-14071 Córdoba, España; Research Group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | - Rafael Lucena
- Affordable and Sustainable Sample Preparation (AS(2)P) Research Group, Departamento de Química Analítica, Instituto Universitario de Investigación en Química Fina y Nanoquímica (IUNAN), Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie, E-14071 Córdoba, España
| | - Michele Protti
- Research Group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | - Laura Mercolini
- Research Group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | - Soledad Cárdenas
- Affordable and Sustainable Sample Preparation (AS(2)P) Research Group, Departamento de Química Analítica, Instituto Universitario de Investigación en Química Fina y Nanoquímica (IUNAN), Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie, E-14071 Córdoba, España.
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Hamnca S, Chamier J, Grant S, Glass T, Iwuoha E, Baker P. Spectroscopy, Morphology, and Electrochemistry of Electrospun Polyamic Acid Nanofibers. Front Chem 2022; 9:782813. [PMID: 35252124 PMCID: PMC8889449 DOI: 10.3389/fchem.2021.782813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 12/16/2021] [Indexed: 11/30/2022] Open
Abstract
Polyamic acid (PAA) nanofibers produced by using the electrospinning method were fully characterized in terms of morphology and spectroscopy. A PAA nanofiber–modified screen-printed carbon electrode was applied to the detection of selected sulfonamides by following an electroanalytical protocol. The polyamic acid (PAA) nanofibers were characterized using Fourier transform infrared (FTIR) spectroscopy to study the integrity of polyamic acid functional groups as nanofibers by comparing them to chemically synthesized polyamic acid. A scanning electron microscope (SEM) was used to confirm the morphology of the produced nanofibers and 3D arrangement at the electrode interface. The Brunauer–Emmett–Teller (BET) method was used to determine the surface area of the nanofibers. Atomic force microscopy (AFM) was used to study the porosity and surface roughness of the nanofibers. Electrochemical evaluation based on diffusion-controlled kinetics was applied to determine the number of electrons transferred in the system, the surface concentration of the deposited PAA thin film (2.14 × 10−6 mol/cm2), and the diffusion coefficient (De) for the PAA nanofiber–modified screen-printed carbon electrode (9.43 × 10−7 cm−2/s). The reported LODs for sulfadiazine and sulfamethazine detection are consistent with requirements for trace-level monitoring by early warning diagnostic systems.
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Affiliation(s)
- Siyabulela Hamnca
- SensorLab, Chemistry Department, University of the Western Cape, Bellville, South Africa
- *Correspondence: Siyabulela Hamnca, ; Priscilla Baker,
| | - Jessica Chamier
- HySA Catalysis, Department of Chemical Engineering, University of Cape Town, Rondebosch, Cape Town, South Africa
| | - Sheila Grant
- Chemistry Department, University of Missouri, Columbia, MO, United states
| | - Timothy Glass
- Chemistry Department, University of Missouri, Columbia, MO, United states
| | - Emmanuel Iwuoha
- SensorLab, Chemistry Department, University of the Western Cape, Bellville, South Africa
| | - Priscilla Baker
- SensorLab, Chemistry Department, University of the Western Cape, Bellville, South Africa
- *Correspondence: Siyabulela Hamnca, ; Priscilla Baker,
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J. Louw C, Hamnca S, G. L. Baker P. Voltammetric and Impedimetric Detection of Norfloxacin at Co Nanoparticle Modified Polymer Composite Electrodes. ELECTROANAL 2020. [DOI: 10.1002/elan.202060423] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Clementine J. Louw
- SensorLab Department of Chemistry University of the Western Cape Robert Sobukwe Road Bellville 7535 Cape Town South Africa
| | - Siyabulela Hamnca
- SensorLab Department of Chemistry University of the Western Cape Robert Sobukwe Road Bellville 7535 Cape Town South Africa
| | - Priscilla G. L. Baker
- SensorLab Department of Chemistry University of the Western Cape Robert Sobukwe Road Bellville 7535 Cape Town South Africa
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Ngema XT, Baker P, Ajayi F, Aubert PH, Banet P. Polyamic acid (PAA) immobilized on glassy carbon electrode (GCE) as an electrochemical platform for the sensing of tuberculosis (TB) antibodies and hydrogen peroxide determination. ANAL LETT 2019. [DOI: 10.1080/00032719.2019.1636058] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Xolani Terrance Ngema
- SensorLab, Department of Chemistry, University of the Western Cape, Bellville, South Africa
- Laboratoire de Physico-chimie des Polymères et des Interfaces (LPPI, EA 2528), Université de Cergy-Pontoise, Neuville-sur-Oise, France
| | - Priscilla Baker
- SensorLab, Department of Chemistry, University of the Western Cape, Bellville, South Africa
| | - Fanelwa Ajayi
- SensorLab, Department of Chemistry, University of the Western Cape, Bellville, South Africa
| | - Pierre-Henri Aubert
- Laboratoire de Physico-chimie des Polymères et des Interfaces (LPPI, EA 2528), Université de Cergy-Pontoise, Neuville-sur-Oise, France
| | - Philippe Banet
- Laboratoire de Physico-chimie des Polymères et des Interfaces (LPPI, EA 2528), Université de Cergy-Pontoise, Neuville-sur-Oise, France
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Li J, Ma J, Zhang Y, Zhang Z, He G. An amperometric biosensor for the assay of sarcosine based on the cross coupled chemical and electrochemical reactions with practical applications. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2018.12.036] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Kariuki VM, Hoffmeier JC, Yazgan I, Sadik OA. Seedless synthesis and SERS characterization of multi-branched gold nanoflowers using water soluble polymers. NANOSCALE 2017; 9:8330-8340. [PMID: 28590471 DOI: 10.1039/c7nr01233k] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report for the first time, the aqueous-based synthesis of multibranched, monodispersed gold nanoflowers (AuNFs) using pyromellitic dianhydride-p-phenylene diamine - PPDDs at room temperature. AuNF synthesis was achieved using PPDDs that converts Au precursor (Au3+) into AuNFs while serving as both the reducing and directional agent. The resulting branched AuNFs exhibited different degrees of anisotropy and protuberance lengths obtained by modulating the ratio of PPDDs and HAuCl4·3H2O. The surface roughness obtained ranged from small bud-like protuberances to elongated spikes, which enabled the tuning of the optical properties of the nanoparticles from ∼450 to 1100 nm. Systematic analysis revealed that the generation of urchin-like particles as well as their size depended on the PPDDs/HAuCl4·3H2O ratio. At a medium concentration of the precursor, spherical nanoparticles were formed. Whereas at lower precursor concentrations, urchin-like nanoparticles were obtained with their size and protuberances length increasing at even lower HAuCl4·3H2O concentration. Increasing the temperature to 100 °C resulted in the enhancement of the anisotropy of the AuNFs. The resulting gold nanoflowers exhibited an enhanced performance in surface-enhanced Raman scattering (SERS). This work provides a unique approach for anisotropic particle synthesis using water soluble polymer and greener approaches. The fabricated AuNFs exhibited variable UV-vis absorption and SERS enhancement as a function of branch morphology, indicating their potential application in biolabeling, biosensing, imaging, and therapeutic applications.
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Affiliation(s)
- Victor M Kariuki
- Department of Chemistry, Center for Research in Advanced Sensing Technologies & Environmental Sustainability (CREATES), State University of New York at Binghamton, P.O Box 6000, Binghamton, NY 13902-6000, USA.
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Hatami M, Azarkar BF, Qandalee M, Hasanabadi H. Morphological investigation of synthetic poly(amic acid)/cerium oxide nanostructures. POLYM ENG SCI 2015. [DOI: 10.1002/pen.24122] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Mehdi Hatami
- Polymer Research Laboratory; Department of Polymer Science and Engineering; University of Bonab; Bonab Iran
| | - Bibi Faezeh Azarkar
- Chemistry Research Laboratory, Faculty of Science, Mashhad Branch, Islamic Azad University; Mashhad Iran
| | - Mohammad Qandalee
- Department of Biology; Garmsar Branch, Islamic Azad University; Garmsar Iran
| | - Hamed Hasanabadi
- Young Researchers and Elite Club, Mahshahr Branch, Islamic Azad University; Mahshahr Iran
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Okello VA, Gass S, Pyrgiotakis G, Du N, Lake A, Kariuki V, Sotiriou GA, Addolorato J, Demokritou P, Sadik OA. Capture, isolation and electrochemical detection of industrially-relevant engineered aerosol nanoparticles using poly (amic) acid, phase-inverted, nano-membranes. JOURNAL OF HAZARDOUS MATERIALS 2014; 279:365-374. [PMID: 25080157 DOI: 10.1016/j.jhazmat.2014.06.081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 05/21/2014] [Accepted: 06/27/2014] [Indexed: 06/03/2023]
Abstract
Workplace exposure to engineered nanoparticles (ENPs) is a potential health and environmental hazard. This paper reports a novel approach for tracking hazardous airborne ENPs by applying online poly (amic) acid membranes (PAA) with offline electrochemical detection. Test aerosol (Fe2O3, TiO2 and ZnO) nanoparticles were produced using the Harvard (Versatile Engineered Generation System) VENGES system. The particle morphology, size and elemental composition were determined using SEM, XRD and EDS. The PAA membrane electrodes used to capture the airborne ENPs were either stand-alone or with electron-beam gold-coated paper substrates. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were used to conceptually illustrate that exposure levels of industry-relevant classes of airborne nanoparticles could be captured and electrochemically detected at PAA membranes filter electrodes. CV parameters showed that PAA catalyzed the reduction of Fe2O3 to Fe(2+) with a size-dependent shift in reduction potential (E(0)). Using the proportionality of peak current to concentration, the amount of Fe2O3 was found to be 4.15×10(-17)mol/cm(3) PAA electrodes. Using EIS, the maximum phase angle (Φmax) and the interfacial charge transfer resistance (Rct) increased significantly using 100μg and 1000μg of TiO2 and ZnO respectively. The observed increase in Φmax and Rct at increasing concentration is consistent with the addition of an insulating layer of material on the electrode surface. The integrated VENGES/PAA filter sensor system has the potential to be used as a portable monitoring system.
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Affiliation(s)
- Veronica A Okello
- Department of Chemistry, Center for Advanced Sensors & Environmental Systems (CASE), State University of New York at Binghamton, P.O. Box 6000, Binghamton, NY 13902, United States
| | - Samuel Gass
- Center for Nanotechnology and Nanotoxicology, Harvard School of Public Health, Department of Environmental Health, 665 Huntington Avenue, Boston, MA 02115-6021, United States
| | - Georgios Pyrgiotakis
- Center for Nanotechnology and Nanotoxicology, Harvard School of Public Health, Department of Environmental Health, 665 Huntington Avenue, Boston, MA 02115-6021, United States
| | - Nian Du
- Department of Chemistry, Center for Advanced Sensors & Environmental Systems (CASE), State University of New York at Binghamton, P.O. Box 6000, Binghamton, NY 13902, United States
| | - Andrew Lake
- Department of Chemistry, Center for Advanced Sensors & Environmental Systems (CASE), State University of New York at Binghamton, P.O. Box 6000, Binghamton, NY 13902, United States
| | - Victor Kariuki
- Department of Chemistry, Center for Advanced Sensors & Environmental Systems (CASE), State University of New York at Binghamton, P.O. Box 6000, Binghamton, NY 13902, United States
| | - Georgios A Sotiriou
- Center for Nanotechnology and Nanotoxicology, Harvard School of Public Health, Department of Environmental Health, 665 Huntington Avenue, Boston, MA 02115-6021, United States
| | - Jessica Addolorato
- Department of Chemistry, Center for Advanced Sensors & Environmental Systems (CASE), State University of New York at Binghamton, P.O. Box 6000, Binghamton, NY 13902, United States
| | - Philip Demokritou
- Center for Nanotechnology and Nanotoxicology, Harvard School of Public Health, Department of Environmental Health, 665 Huntington Avenue, Boston, MA 02115-6021, United States.
| | - Omowunmi A Sadik
- Department of Chemistry, Center for Advanced Sensors & Environmental Systems (CASE), State University of New York at Binghamton, P.O. Box 6000, Binghamton, NY 13902, United States.
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Singh G, Stephan C, Westerhoff P, Carlander D, Duncan TV. Measurement Methods to Detect, Characterize, and Quantify Engineered Nanomaterials in Foods. Compr Rev Food Sci Food Saf 2014; 13:693-704. [PMID: 33412711 DOI: 10.1111/1541-4337.12078] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 03/13/2014] [Indexed: 01/10/2023]
Abstract
This article is one of a series of 4 that reports on a task of the NanoRelease Food Additive project of the International Life Science Institute Center for Risk Science Innovation and Application to identify, evaluate, and develop methods that are needed to confidently detect, characterize, and quantify intentionally produced engineered nanomaterials (ENMs) released from food along the alimentary tract. This particular article focuses on the problem of detecting ENMs in food, paying special attention to matrix interferences and how to deal with them. In this review, an in-depth analysis of the literature related to detection of ENMs in complex matrices is presented. The literature review includes discussions of sampling methods, such as centrifugation and ENM extraction. Available analytical methods, as well as emerging methods, are also presented. The article concludes with a summary of findings and an overview of potential knowledge gaps and targets for method development in this area.
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Affiliation(s)
- Gurmit Singh
- Food Research Div, Bureau of Chemical Safety, Health Canada, 251 Sir Frederick Banting Driveway, Ottawa, Canada
| | - Chady Stephan
- PerkinElmer, Inc, 6 - 501 Rowntree Dairy Rd., Woodbridge, ON L4L 8H1, Canada
| | - Paul Westerhoff
- School of Sustainable Engineering and the Built Environment, Arizona State Univ, PO Box 875306, Tempe, AZ, 85287-5306, U.S.A
| | - David Carlander
- Nanotechnology Industries Assoc, 101 Ave. Louise, 1050 Brussels, Belgium
| | - Timothy V Duncan
- Center for Food Safety and Applied Nutrition, United States Food and Drug Administration, 6502 South Archer Rd., Bedford Park, IL 60516-1957, U.S.A
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Hess EH, Waryo T, Sadik OA, Iwuoha EI, Baker PG. Constitution of novel polyamic acid/polypyrrole composite films by in-situ electropolymerization. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.01.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Borah BJ, Saikia H, Bharali P. Reductive conversion of Cr(vi) to Cr(iii) over bimetallic CuNi nanocrystals at room temperature. NEW J CHEM 2014. [DOI: 10.1039/c4nj00150h] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Han E, Wang Y, Chen X, Shang G, Yu W, Niu H, Qi S, Wu D, Jin R. Consecutive large-scale fabrication of surface-silvered polyimide fibers via an integrated direct ion-exchange self-metallization strategy. ACS APPLIED MATERIALS & INTERFACES 2013; 5:4293-4301. [PMID: 23593925 DOI: 10.1021/am4005094] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Herein, we report our success on the large-scale online preparation of surface-silver-metallized polyimide (PI) fibers by utilizing silver ammonia complex cation ([Ag(NH3)2](+)) as the silver (Ag) precursor and pyromellitic dianhydride/4,4'-oxidianiline (PMDA/4,4'-ODA)-based polyimide as the matrix via a direct ion-exchange self-metallization process integrated within a consecutive fiber-spinning procedure. The method works by using the online freshly prepared PMDA/4,4'-ODA-based poly(amic acid) (PAA) fibers as the starting material to perform an ion-exchange reaction in aqueous silver(I) solution to load silver(I) into the PAA precursor fibers, followed by a programmed stepwise thermal treatment process to convert PAA to its final imide form with the concomitant silver(I) reduction and the subsequent aggregation, producing the surface-silvered polyimide hybrid fibers. The influence of thermal cycles on the formation of silver nanostructures, and the variation of surface morphologies and fiber properties during the heating process were investigated. Experimental results indicate that the PI-Ag fibers were produced with good mechanical and thermal properties. In addition, bioassessment suggests that the hybrid fibers exhibit superior antibacterial activities (99.99% in 24 h toward E. coli ). Outstanding electrical conductive properties of a certain length of the PI-Ag hybrid fiber (electrical resistance: ca. 0.1 Ω cm(-1)) could also be realized on the composite fibers but with severe destructions in the final mechanical properties. The fibers were also characterized by FTIR, ICP, XRD, SEM, and TEM.
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Affiliation(s)
- Enlin Han
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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Conducting polyamic acid membranes for sensing and site-directed immobilization of proteins. Anal Biochem 2012; 428:54-63. [DOI: 10.1016/j.ab.2012.06.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 06/06/2012] [Accepted: 06/08/2012] [Indexed: 11/23/2022]
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Lin ZW, Qi SL, Wu DZ. Formation of double-surface-silvered polyimide films via a direct ion-exchange self-metallization technique: The case of BPADA/ODA and [Ag(NH3)2]+. J Appl Polym Sci 2012. [DOI: 10.1002/app.36240] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Cai D, Su J, Huang M, Liu Y, Wang J, Dai L. Synthesis, characterization and hydrolytic stability of poly (amic acid) ammonium salt. Polym Degrad Stab 2011. [DOI: 10.1016/j.polymdegradstab.2011.09.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Omole MA, Okello VA, Lee V, Zhou L, Sadik OA, Umbach C, Sammakia B. Catalytic Reduction of Hexavalent Chromium Using Flexible Nanostructured Poly(amic acids). ACS Catal 2011. [DOI: 10.1021/cs100034z] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marcells A. Omole
- Department of Chemistry, Center for Advanced Sensors & Environmental Systems (CASE), State University of New York at Binghamton, P.O. Box 6000, Binghamton, New York 13902, United States
| | - Veronica A. Okello
- Department of Chemistry, Center for Advanced Sensors & Environmental Systems (CASE), State University of New York at Binghamton, P.O. Box 6000, Binghamton, New York 13902, United States
| | - Vincent Lee
- Department of Chemistry, Center for Advanced Sensors & Environmental Systems (CASE), State University of New York at Binghamton, P.O. Box 6000, Binghamton, New York 13902, United States
| | - Lisa Zhou
- Department of Chemistry, Center for Advanced Sensors & Environmental Systems (CASE), State University of New York at Binghamton, P.O. Box 6000, Binghamton, New York 13902, United States
| | - Omowunmi A. Sadik
- Department of Chemistry, Center for Advanced Sensors & Environmental Systems (CASE), State University of New York at Binghamton, P.O. Box 6000, Binghamton, New York 13902, United States
| | - Christopher Umbach
- Department of Materials Science & Engineering, Cornell University, 126 Bard Hall, Ithaca, New York 14853-1501, United States
| | - Bahgat Sammakia
- Department of Mechanical Engineering, Center for Advanced Microelectronics Manufacturing, State University of New York at Binghamton, P.O. Box 6000, Binghamton, New York 13902, United States
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Okello VA, Du N, Deng B, Sadik OA. Environmental applications of poly(amic acid)-based nanomaterials. ACTA ACUST UNITED AC 2011; 13:1236-45. [DOI: 10.1039/c1em10061k] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ijeri VS, Nair JR, Gerbaldi C, Bongiovanni RM, Penazzi N. Metallopolymer capacitor in "one pot" by self-directed UV-assisted process. ACS APPLIED MATERIALS & INTERFACES 2010; 2:3192-3200. [PMID: 20949927 DOI: 10.1021/am1006639] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Silver metalized methacrylate films are prepared by single-step UV curing process with good conductivity on both sides. The major component of the composite is Bisphenol A ethoxylate dimethacrylate, which can be photopolymerized by a photoreactive initiator under UV light. Under the same conditions of UV irradiation, silver ions are deposited as metal nanoparticles while the pyrrole is oxidized to polypyrrole. The migration of silver ions and pyrrole toward both surfaces during polymerization leads to the formation of a metallo-polymer capacitor. The composite films are characterized by SEM-EDX and electrical measurements for possible applications as capacitors in flexible and/or nonplanar electronics.
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Affiliation(s)
- Vijaykumar S Ijeri
- Department of Materials Science and Chemical Engineering, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy
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Du N, Wong C, Feurstein M, Sadik OA, Umbach C, Sammakia B. Flexible poly(amic acid) conducting polymers: effect of chemical composition on structural, electrochemical, and mechanical properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:14194-14202. [PMID: 20662482 DOI: 10.1021/la101314j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A new approach for creating flexible, mechanically strong poly(amic acid) (PAA) hybrid copolymers is described. The reduction of gold salts to gold nanoparticles by PAA coupled with its copolymerization in the presence of various silanes (e.g., N-[3-(trimethoxysilyl)-propyl] aniline (TMOSPA), 3-aminopropyl-trimethoxysilane (APTMOS), dichlorodimethylsilane (DCMS), and tetramethoxysilane (TMOS)) has enabled the design of a series of polymeric films. The resulting poly(amic acid), silane, and gold (PSG) solutions were employed for the fabrication of flexible, ternary polymers with a minimum bend ratio of 3 mm using thermal desolvation and/or wet-phase inversion techniques. By controlling the composition and synthesis conditions, porous PSG films were produced that are flexible or rigid, transparent or opaque, and/or mechanically strong. (1)H NMR, (13)C NMR, and Fourier transform infrared spectroscopy (FTIR) characterization results showed that the carboxylic acid moieties were retained in the PSG copolymer. Thermal stabilities with degradation characteristics of the polymers were determined using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Although structurally and morphologically different from the parent PAA, copolymerization with silanes had significantly improved the mechanical and interfacial property of the PSG class of films.
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Affiliation(s)
- Nian Du
- Department of Chemistry, State University of New York-Binghamton, P.O. Box 6000, Binghamton, New York 13905, USA
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Chang CC, Chang CH. Preparation and characterization of polyurethane-gold nanocomposites prepared using encapsulated gold nanoparticles. POLYM INT 2010. [DOI: 10.1002/pi.2805] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Tavakoli Naeini A, Adeli M, Vossoughi M. Synthesis of gold nanoparticle necklaces using linear–dendritic copolymers. Eur Polym J 2010. [DOI: 10.1016/j.eurpolymj.2009.10.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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24
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Li TL, Lien-Chung Hsu S. Preparation and properties of conductive polyimide nanocomposites with assistance of a metallo-organic compound. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/b916101e] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Yang H, Nagai K, Abe T, Homma H, Norimatsu T, Ramaraj R. Enhanced catalytic activity of gold nanoparticles doped in a mesoporous organic gel based on polymeric phloroglucinol carboxylic acid-formaldehyde. ACS APPLIED MATERIALS & INTERFACES 2009; 1:1860-1864. [PMID: 20355806 DOI: 10.1021/am900447c] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Gold nanoparticles were supported by a phloroglucinolcarboxylic acid-formaldehyde (PF) gel, a new organic gel with a 30 nm spheroid-like structure. The surface area of the PF gel with gold nanoparticles was 550 m(2)/g. Gold nanoparticles supported on a PF gel exhibited catalytic activity in the reduction of 4-nitrophenol with a reaction rate constant of 7.4 x 10(-3) s(-1), which is high in the reported heterogeneous reaction system. The adsorption behavior of 4-nitrophenol into the gel support was observed by ultraviolet-visible absorption spectroscopy. Gold nanoparticles in the PF network were characterized by scanning electron microscopy, atomic force microscopy, and transmission electron microscopy observation. The high reduction rate would be attributed to the extraction and diffusion of the reactant through the pores of a PF gel support to encounter the highly dispersed gold nanoparticles on the surface and inside the material.
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Affiliation(s)
- Han Yang
- Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan
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Yang S, Wu D, Qi S, Cui G, Jin R, Wu Z. Fabrication of Highly Reflective and Conductive Double-Surface-Silvered Layers Embedded on Polymeric Films through All-Wet Process at Room Temperature. J Phys Chem B 2009; 113:9694-701. [DOI: 10.1021/jp900755c] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shuaiqi Yang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Dezhen Wu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Shengli Qi
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Guanghui Cui
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Riguang Jin
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Zhanpeng Wu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R. China
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27
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Sadik OA, Zhou AL, Kikandi S, Du N, Wang Q, Varner K. Sensors as tools for quantitation, nanotoxicity and nanomonitoring assessment of engineered nanomaterials. ACTA ACUST UNITED AC 2009; 11:1782-800. [DOI: 10.1039/b912860c] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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28
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Qi S, Wu Z, Wu D, Yang W, Jin R. The chemistry involved in the loading of silver(I) into poly(amic acid) via ion exchange: A metal-ion-induced crosslinking behavior. POLYMER 2009. [DOI: 10.1016/j.polymer.2008.12.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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29
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Qi S, Wu Z, Wu D, Jin R. Controlled Formation of Optically Reflective and Electrically Conductive Silvered Surfaces on Polyimide Film via a Direct Ion-Exchange Self-Metallization Technique Using Silver Ammonia Complex Cation as the Precursor. J Phys Chem B 2008; 112:5575-84. [DOI: 10.1021/jp711373p] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Preparation and characterization of polyimide–nanogold nanocomposites from 3-mercaptopropyltrimethoxysilane encapsulated gold nanoparticles. Polym Degrad Stab 2008. [DOI: 10.1016/j.polymdegradstab.2007.10.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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31
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Qi S, Wu Z, Wu D, Wang W, Jin R. Highly reflective and conductive double-surface-silvered polyimide films prepared from silver fluoride and BTDA/4,4'-ODA. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:4878-85. [PMID: 17378592 DOI: 10.1021/la062948y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
This work focuses on surface silver metallization on a 3,3',4,4'-benzophenonetetracarboxylic dianhydride/4,4'-oxydianiline (BTDA/ODA)-based polyimide matrix via a direct ion-exchange self-metallization technique using a simple silver salt, silver fluoride, as the silver precursor. The method involves performing an ion-exchange reaction of damp-dry poly(amic acid) films in silver aqueous solution to form silver(I)-containing precursor films. Thermal treatment under tension converts the poly(amic acid) into polyimide and simultaneously reduces the silver(I) to silver(0), yielding silver layers with excellent reflectivity and conductivity on both film sides. However, significant property differences were exhibited on the upside and underside surfaces of the metallized films and this has been discussed in detail. The variation of surface properties and surface morphologies during the thermal curing cycle was also investigated. The mechanical and thermal properties of the metallized polyimide films are essentially similar to those of the host polyimide.
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Affiliation(s)
- Shengli Qi
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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