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  1. AU="Torabfam Milad"
  2. AU=Hosny Somaya
  3. AU="Mercieca, Janelle"
  4. AU="Walker, Geoffrey Scott"
  5. AU="Márquez-Sánchez, M T"
  6. AU="Remy, Séverine"
  7. AU="van der Stoel, Miesje M"
  8. AU="Hifumi, Toru"
  9. AU="Jie Chen"
  10. AU="Ballarin, Barbara"
  11. AU="Thiel, Nadine"
  12. AU="Gerti Pishtari"
  13. AU="Alexander Hammers, ProfPhD"
  14. AU="Dessimoz, Christophe"
  15. AU="Planchuelo-Gómez, Álvaro"
  16. AU="McKay, Lindsay G A"
  17. AU="Laude, Marie-Charlotte"
  18. AU="Hale, Lillian V A"
  19. AU="Hassan Hartman"
  20. AU="Song, Mengwei"
  21. AU="Yimin Geng"
  22. AU="Wang, Chang-Sheng"
  23. AU="Doyle, Andrew D"
  24. AU="Redpath, Sophie H A"
  25. AU="Hopman, Maria Te"
  26. AU="Pomputius, William"
  27. AU="Agrawal, Sonali"
  28. AU="Martinez, Luis R"
  29. AU="Passoni, Lorena"
  30. AU="Slimani, Wafa"
  31. AU="Jin, J"
  32. AU="Xia, Hongmin"
  33. AU="Akdemir, İrem"
  34. AU=Ciccone Giovannino

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  1. Artikel ; Online: Microwave-assisted green synthesis of silver nanoparticles using dried extracts of Chlorella vulgaris and antibacterial activity studies

    Torabfam Milad / Yüce Meral

    Green Processing and Synthesis, Vol 9, Iss 1, Pp 283-

    2020  Band 293

    Abstract: Green synthesis of metallic nanoparticles (NPs) is acquiring considerable attention due to its environmental and economic superiorities over other methods. This study describes the practical synthesis of silver nanoparticles (AgNPs) through the reduction ...

    Abstract Green synthesis of metallic nanoparticles (NPs) is acquiring considerable attention due to its environmental and economic superiorities over other methods. This study describes the practical synthesis of silver nanoparticles (AgNPs) through the reduction of silver nitrate solution using an algal source, Chlorella vulgaris, as the reducing as well as the stabilizing agent. The energy required for this synthesis was supplied by microwave radiation. The ultraviolet-visible spectroscopy exhibited a single peak related to the surface plasmon absorbance of AgNPs at 431 nm. The AgNPs with high stability (a zeta potential of −17 mV), hydrodynamic size distribution of 1–50 nm, and mostly spherical shape were obtained through a 10 min process. Fourier transform infrared spectroscopy analysis revealed that several functional groups, including carbonyl groups of C. vulgaris, play a significant role in the formation of functional NPs. Antibacterial features of the produced AgNPs were verified against those of Salmonella enterica subsp. enterica serovar typhimurium and Staphylococcus aureus, demonstrating a considerable growth inhibition at increasing concentrations of the NPs. As a result, the formed AgNPs can be used as a promising agent against bacterial diseases.
    Schlagwörter green synthesis ; microwave synthesis ; silver nanoparticles ; algae ; chlorella vulgaris ; antimicrobial activity ; Chemistry ; QD1-999
    Thema/Rubrik (Code) 540
    Sprache Englisch
    Erscheinungsdatum 2020-05-01T00:00:00Z
    Verlag De Gruyter
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  2. Artikel ; Online: Microwave-enhanced silver nanoparticle synthesis using chitosan biopolymer

    Torabfam Milad / Jafarizadeh-Malmiri Hoda

    Green Processing and Synthesis, Vol 7, Iss 6, Pp 530-

    optimization of the process conditions and evaluation of their characteristics

    2018  Band 537

    Abstract: A facile and green synthesis of silver nanoparticles (AgNPs) by aqueous chitosan solution and microwave irradiation is proposed as a cost effective and environmentally benevolent alternative to chemical and physical methods. With this aim, different ... ...

    Abstract A facile and green synthesis of silver nanoparticles (AgNPs) by aqueous chitosan solution and microwave irradiation is proposed as a cost effective and environmentally benevolent alternative to chemical and physical methods. With this aim, different amounts of chitosan solution (3–9 ml) with several concentration (4–6% w/v) and 3 ml of the silver salt solution (0.5% w/v) were mixed and microwave irradiated for 100 s. Response surface methodology (RSM) was used to evaluate the effects of the amount and concentration of chitosan solution on the particle size and concentration of the synthesized AgNPs. The optimum AgNPs synthesis process was obtained using 9 ml of 0.4% (w/v) chitosan solution. The spherical and more stable AgNPs synthesized at optimum conditions had particle size, concentration, polydispersity index (PDI) and zeta potential values of 37 nm, 69 ppm, 0.557 and +50 mV, respectively. The synthesized AgNPs indicated strong antifungal activity toward Aspergillus flavus and high antibacterial activity against both Gram-positive (Staphylococcus aureus) and Gram-negative bacteria (Escherichia coli).
    Schlagwörter antimicrobial activity ; chitosan ; microwave irradiation ; optimization ; silver nanoparticles ; Chemistry ; QD1-999
    Thema/Rubrik (Code) 540
    Sprache Englisch
    Erscheinungsdatum 2018-11-01T00:00:00Z
    Verlag De Gruyter
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  3. Artikel: A microwave-powered continuous fluidic system for polymer nanocomposite manufacturing: a proof-of-concept study

    Torabfam, Milad / Nejatpour, Mona / Fidan, Tuçe / Kurt, Hasan / Yüce, Meral / Bayazit, Mustafa Kemal

    Green chemistry. 2022 Apr. 4, v. 24, no. 7

    2022  

    Abstract: Continuous manufacturing of pure nanocrystals with a narrow size distribution in a polymer matrix is very challenging, although it is highly crucial to get their full potential for advanced applications. A long-lasting nanocomposite (NC) manufacturing ... ...

    Abstract Continuous manufacturing of pure nanocrystals with a narrow size distribution in a polymer matrix is very challenging, although it is highly crucial to get their full potential for advanced applications. A long-lasting nanocomposite (NC) manufacturing challenge is, for the first time, overcome by a microwave-powered fluidic system (MWFS). The effect of microwave power (MWP), flow rate, and the concentration of the reagents are systematically studied. The nylon-6 NC bearing evenly distributed silver nanoparticles (AgNPs) with a mean size of ∼2.59 ± 0.639 nm is manufactured continuously in ∼2 min at ∼50–55 °C using a green solvent, formic acid. The AgNP size becomes smaller when increasing the polymer concentration gradually. Small NPs with a narrow size distribution are produced at high MWP (40 W), but large ones with a broad size distribution at low MWP (10 W). The nylon-6 crystallinity is NP size-dependent, and the γ-phase (pseudo-hexagonal crystal) is dominant in the presence of small NPs as against the large counterparts. Given the small-sized AgNPs in the MWF-manufactured NCs, the antibacterial activity tests with Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa show superior activity compared to that of the large AgNP-bearing (∼50 nm) NCs produced in a conventional heating fluidic system. The proposed MWFS can manufacture other added-value NCs continuously.
    Schlagwörter Escherichia coli ; Pseudomonas aeruginosa ; Staphylococcus aureus ; antibacterial properties ; crystal structure ; formic acid ; green chemistry ; nanocrystals ; nanosilver ; polymer nanocomposites ; polymers ; solvents
    Sprache Englisch
    Erscheinungsverlauf 2022-0404
    Umfang p. 2812-2824.
    Erscheinungsort The Royal Society of Chemistry
    Dokumenttyp Artikel
    ZDB-ID 2006274-6
    ISSN 1463-9270 ; 1463-9262
    ISSN (online) 1463-9270
    ISSN 1463-9262
    DOI 10.1039/d1gc04711f
    Datenquelle NAL Katalog (AGRICOLA)

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  4. Artikel: Microwave-Promoted Continuous Flow Systems in Nanoparticle Synthesis—A Perspective

    Saleem, Qandeel / Torabfam, Milad / Fidan, Tuçe / Kurt, Hasan / Yüce, Meral / Clarke, Nigel / Bayazit, Mustafa Kemal

    ACS sustainable chemistry & engineering. 2021 July 23, v. 9, no. 30

    2021  

    Abstract: Microwave-promoted continuous flow systems have emerged as a game-changer in nanoparticle synthesis. Owing to the excellent compatibility between fast, sustainable microwave heating and one-step, efficient flow chemistry, this promising technology is ... ...

    Abstract Microwave-promoted continuous flow systems have emerged as a game-changer in nanoparticle synthesis. Owing to the excellent compatibility between fast, sustainable microwave heating and one-step, efficient flow chemistry, this promising technology is meant to enhance the synthetic abilities of nanoscientists. This Perspective aims to present a panoramic view of the state of the art in this field. Additionally, the effect of various microwave and flow parameters on the properties of nanoparticles is discussed along with a comparative glance at the features that make flow reactors more practical and sustainable than their batch counterparts. The overview has also analyzed various microwave continuous flow reactors available in the literature, with an acute emphasis on the nanosynthesis route and design features. Moreover, a discussion on the numerical modeling of microwave flow systems has been made a part of this perspective to reiterate its significance and encourage research in this domain. The Perspective also briefly comments on existing challenges and future prospects of this technology.
    Schlagwörter chemistry ; green chemistry ; microwave treatment
    Sprache Englisch
    Erscheinungsverlauf 2021-0723
    Umfang p. 9988-10015.
    Erscheinungsort American Chemical Society
    Dokumenttyp Artikel
    ISSN 2168-0485
    DOI 10.1021/acssuschemeng.1c02695
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  5. Artikel ; Online: Plasmonic Titanium Nitride Nanohole Arrays for Refractometric Sensing.

    Günaydın, Beyza Nur / Gülmez, Mert / Torabfam, Milad / Pehlivan, Zeki Semih / Tütüncüoğlu, Atacan / Kayalan, Cemre Irmak / Saatçioğlu, Erhan / Bayazıt, Mustafa Kemal / Yüce, Meral / Kurt, Hasan

    ACS applied nano materials

    2023  Band 6, Heft 22, Seite(n) 20612–20622

    Abstract: Group IVB metal nitrides have attracted great interest as alternative plasmonic materials. Among them, titanium nitride (TiN) stands out due to the ease of deposition and relative abundance of Ti compared to those of Zr and Hf metals. Even though they do ...

    Abstract Group IVB metal nitrides have attracted great interest as alternative plasmonic materials. Among them, titanium nitride (TiN) stands out due to the ease of deposition and relative abundance of Ti compared to those of Zr and Hf metals. Even though they do not have Au or Ag-like plasmonic characteristics, they offer many advantages, from high mechanical stability to refractory behavior and complementary metal oxide semiconductor-compatible fabrication to tunable electrical/optical properties. In this study, we utilized reactive RF magnetron sputtering to deposit plasmonic TiN thin films. The flow rate and ratio of Ar/N
    Sprache Englisch
    Erscheinungsdatum 2023-11-14
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 2574-0970
    ISSN (online) 2574-0970
    DOI 10.1021/acsanm.3c03050
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel ; Online: Fractionated charge variants of biosimilars: A review of separation methods, structural and functional analysis.

    Yüce, Meral / Sert, Fatma / Torabfam, Milad / Parlar, Ayhan / Gürel, Büşra / Çakır, Nilüfer / Dağlıkoca, Duygu E / Khan, Mansoor A / Çapan, Yılmaz

    Analytica chimica acta

    2021  Band 1152, Seite(n) 238189

    Abstract: The similarity between originator and biosimilar monoclonal antibody candidates are rigorously assessed based on primary, secondary, tertiary, quaternary structures, and biological functions. Minor differences in such parameters may alter target-binding, ...

    Abstract The similarity between originator and biosimilar monoclonal antibody candidates are rigorously assessed based on primary, secondary, tertiary, quaternary structures, and biological functions. Minor differences in such parameters may alter target-binding, potency, efficacy, or half-life of the molecule. The charge heterogeneity analysis is a prerequisite for all biotherapeutics. Monoclonal antibodies are prone to enzymatic or non-enzymatic structural modifications during or after the production processes, leading to the formation of fragments or aggregates, various glycoforms, oxidized, deamidated, and other degraded residues, reduced Fab region binding activity or altered FcR binding activity. Therefore, the charge variant profiles of the monoclonal antibodies must be regularly and thoroughly evaluated. Comparative structural and functional analysis of physically separated or fractioned charged variants of monoclonal antibodies has gained significant attention in the last few years. The fraction-based charge variant analysis has proved very useful for the biosimilar candidates comprising of unexpected charge isoforms. In this report, the key methods for the physical separation of monoclonal antibody charge variants, structural and functional analyses by liquid chromatography-mass spectrometry, and surface plasmon resonance techniques were reviewed.
    Mesh-Begriff(e) Antibodies, Monoclonal ; Biosimilar Pharmaceuticals ; Chromatography, Liquid ; Mass Spectrometry ; Surface Plasmon Resonance
    Chemische Substanzen Antibodies, Monoclonal ; Biosimilar Pharmaceuticals
    Sprache Englisch
    Erscheinungsdatum 2021-01-12
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article ; Review
    ZDB-ID 1483436-4
    ISSN 1873-4324 ; 0003-2670
    ISSN (online) 1873-4324
    ISSN 0003-2670
    DOI 10.1016/j.aca.2020.12.064
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  7. Artikel ; Online: Aptamer and nanomaterial based FRET biosensors: a review on recent advances (2014-2019).

    Pehlivan, Zeki Semih / Torabfam, Milad / Kurt, Hasan / Ow-Yang, Cleva / Hildebrandt, Niko / Yüce, Meral

    Mikrochimica acta

    2019  Band 186, Heft 8, Seite(n) 563

    Abstract: Fluorescence resonance energy transfer, one of the most powerful phenomena for elucidating molecular interactions, has been extensively utilized as a biosensing tool to provide accurate information at the nanoscale. Numerous aptamer- and nanomaterial- ... ...

    Abstract Fluorescence resonance energy transfer, one of the most powerful phenomena for elucidating molecular interactions, has been extensively utilized as a biosensing tool to provide accurate information at the nanoscale. Numerous aptamer- and nanomaterial-based FRET bioassays has been developed for detection of a large variety of molecules. Affinity probes are widely used in biosensors, in which aptamers have emerged as advantageous biorecognition elements, due to their chemical and structural stability. Similarly, optically active nanomaterials offer significant advantages over conventional organic dyes, such as superior photophysical properties, large surface-to-volume ratios, photostability, and longer shelf life. In this report (with 175 references), the use of aptamer-modified nanomaterials as FRET couples is reviewed: quantum dots, upconverting nanoparticles, graphene, reduced graphene oxide, gold nanoparticles, molybdenum disulfide, graphene quantum dots, carbon dots, and metal-organic frameworks. Tabulated summaries provide the reader with useful information on the current state of research in the field. Graphical abstract Schematic representation of a fluorescence resonance energy transfer-based aptamer nanoprobe in the absence and presence of a given target molecule (analyte). Structures are not drawn to their original scales.
    Sprache Englisch
    Erscheinungsdatum 2019-07-24
    Erscheinungsland Austria
    Dokumenttyp Journal Article ; Review
    ZDB-ID 89-9
    ISSN 1436-5073 ; 0026-3672
    ISSN (online) 1436-5073
    ISSN 0026-3672
    DOI 10.1007/s00604-019-3659-3
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