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  1. AU="Gianvittorio, Stefano"
  2. AU="Mendoza, Bernardo S"
  3. AU="Lieberman, Steven M"
  4. AU="Chen, Michel"
  5. AU=Serur I.P.
  6. AU="Docters W."
  7. AU="Prusa, Kenneth J"
  8. AU="Dworschak-Simpson, Sierra"
  9. AU="Jurisica, Igor"
  10. AU="Ye, Jessica Meng"
  11. AU="Kiyoshi Takahara"
  12. AU="Sofía Bauer"
  13. AU="Randriamboavonjy, Joseph Iharinjaka"
  14. AU="DiFazio, Louis T"

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  1. Artikel: Print-Light-Synthesis for Single-Step Metal Nanoparticle Synthesis and Patterned Electrode Production.

    Gianvittorio, Stefano / Tonelli, Domenica / Lesch, Andreas

    Nanomaterials (Basel, Switzerland)

    2023  Band 13, Heft 13

    Abstract: The fabrication of thin-film electrodes, which contain metal nanoparticles and nanostructures for applications in electrochemical sensing as well as energy conversion and storage, is often based on multi-step procedures that include two main passages: (i) ...

    Abstract The fabrication of thin-film electrodes, which contain metal nanoparticles and nanostructures for applications in electrochemical sensing as well as energy conversion and storage, is often based on multi-step procedures that include two main passages: (i) the synthesis and purification of nanomaterials and (ii) the fabrication of thin films by coating electrode supports with these nanomaterials. The patterning and miniaturization of thin film electrodes generally require masks or advanced patterning instrumentation. In recent years, various approaches have been presented to integrate the spatially resolved deposition of metal precursor solutions and the rapid conversion of the precursors into metal nanoparticles. To achieve the latter, high intensity light irradiation has, in particular, become suitable as it enables the photochemical, photocatalytical, and photothermal conversion of the precursors during or slightly after the precursor deposition. The conversion of the metal precursors directly on the target substrates can make the use of capping and stabilizing agents obsolete. This review focuses on hybrid platforms that comprise digital metal precursor ink printing and high intensity light irradiation for inducing metal precursor conversions into patterned metal and alloy nanoparticles. The combination of the two methods has recently been named Print-Light-Synthesis by a group of collaborators and is characterized by its sustainability in terms of low material consumption, low material waste, and reduced synthesis steps. It provides high control of precursor loading and light irradiation, both affecting and improving the fabrication of thin film electrodes.
    Sprache Englisch
    Erscheinungsdatum 2023-06-23
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article ; Review
    ZDB-ID 2662255-5
    ISSN 2079-4991
    ISSN 2079-4991
    DOI 10.3390/nano13131915
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: ALP-Based Biosensors Employing Electrodes Modified with Carbon Nanomaterials for Pesticides Detection.

    Gianvittorio, Stefano / Gualandi, Isacco / Tonelli, Domenica

    Molecules (Basel, Switzerland)

    2023  Band 28, Heft 4

    Abstract: Due to the growing presence of pesticides in the environment and in food, the concern of their impact on human health is increasing. Therefore, the development of fast and reliable detection methods is needed. Enzymatic inhibition-based biosensors ... ...

    Abstract Due to the growing presence of pesticides in the environment and in food, the concern of their impact on human health is increasing. Therefore, the development of fast and reliable detection methods is needed. Enzymatic inhibition-based biosensors represent a good alternative for replacing the more complicated and time-consuming traditional methods (chromatography, spectrophotometry, etc.). This paper describes the development of an electrochemical biosensor exploiting alkaline phosphatase as the biological recognition element and a chemically modified glassy carbon electrode as the transducer. The biosensor was prepared modifying the GCE surface by a mixture of Multi-Walled-Carbon-Nanotubes (MWCNTs) and Electrochemically-Reduced-Graphene-Oxide (ERGO) followed by the immobilization of the enzyme by cross-linking with bovine serum albumin and glutaraldehyde. The inhibition of the biosensor response caused by pesticides was established using 2-phospho-L-ascorbic acid as the enzymatic substrate, whose dephosphorylation reaction produces ascorbic acid (AA). The MWCNTs/ERGO mixture shows a synergic effect in terms of increased sensitivity and decreased overpotential for AA oxidation. The response of the biosensor to the herbicide 2,4-dichloro-phenoxy-acetic-acid was evaluated and resulted in the concentration range 0.04-24 nM, with a limit of the detection of 16 pM. The determination of other pesticides was also achieved. The re-usability of the electrode was demonstrated by performing a washing procedure.
    Mesh-Begriff(e) Alkaline Phosphatase ; Biosensing Techniques/methods ; Carbon/chemistry ; Electrochemical Techniques/methods ; Electrodes ; Nanotubes, Carbon/chemistry ; Pesticides/chemistry
    Chemische Substanzen Alkaline Phosphatase (EC 3.1.3.1) ; Carbon (7440-44-0) ; graphene oxide ; Nanotubes, Carbon ; Pesticides
    Sprache Englisch
    Erscheinungsdatum 2023-02-05
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules28041532
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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