Articles producció científica> Química Física i Inorgànica

Multiplex SERS Chemosensing of Metal Ions via DNA-Mediated Recognition

  • Identification data

    Identifier: imarina:5873586
    Authors:
    Guerrini L, Alvarez-Puebla RA
    Abstract:
    The combination of molecular sensors and plasmonic materials is emerging as one of the most promising approaches for ultrasensitive SERS-based detection of metal ions in complex fluids. However, only a very small fraction of the large pool of potential chemosensors described in classical analytical chemistry has been successfully implemented into viable SERS platforms for metal ion determination. This is due to the molecular restrictions that require the chemosensor to adhere onto the plasmonic surface while retaining the capability to undergo large structural alterations upon metal ion binding. In this work, we demonstrate that the structural and functional plasticity of DNA for interacting with small aromatic molecules can be exploited to this end. DNA coating of silver nanoparticles modulates the interaction of the commercially available alizarin red S (ARS) chemosensor with the nanomaterial, translating its recognition capabilities from bulk solution onto the plasmonic surface, while simultaneously directing the particle assembling into highly efficient SERS clusters. The sensing approach was successfully applied to the multiplex, quantitative determination of Al(III) and Fe(III) in tap water in the subppb level.
  • Others:

    Author, as appears in the article.: Guerrini L, Alvarez-Puebla RA
    Department: Química Física i Inorgànica
    URV's Author/s: Alvarez Puebla, Ramon Angel / Guerrini, Luca
    Keywords: Surface-enhanced raman Speciation Silver Sensors Scattering analysis Quantification Design Alizarin-red-s Adsorption
    Abstract: The combination of molecular sensors and plasmonic materials is emerging as one of the most promising approaches for ultrasensitive SERS-based detection of metal ions in complex fluids. However, only a very small fraction of the large pool of potential chemosensors described in classical analytical chemistry has been successfully implemented into viable SERS platforms for metal ion determination. This is due to the molecular restrictions that require the chemosensor to adhere onto the plasmonic surface while retaining the capability to undergo large structural alterations upon metal ion binding. In this work, we demonstrate that the structural and functional plasticity of DNA for interacting with small aromatic molecules can be exploited to this end. DNA coating of silver nanoparticles modulates the interaction of the commercially available alizarin red S (ARS) chemosensor with the nanomaterial, translating its recognition capabilities from bulk solution onto the plasmonic surface, while simultaneously directing the particle assembling into highly efficient SERS clusters. The sensing approach was successfully applied to the multiplex, quantitative determination of Al(III) and Fe(III) in tap water in the subppb level.
    Thematic Areas: Química Medicina ii Medicina i Materiais Interdisciplinar Geociências General medicine Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Enfermagem Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry, analytical Biotecnología Biodiversidade Astronomia / física Analytical chemistry
    ISSN: 00032700
    Author's mail: ramon.alvarez@urv.cat luca.guerrini@urv.cat
    Author identifier: 0000-0003-4770-5756 0000-0002-2925-1562
    Record's date: 2023-02-18
    Papper original source: Analytical Chemistry. 91 (18): 11778-11784
    APA: Guerrini L, Alvarez-Puebla RA (2019). Multiplex SERS Chemosensing of Metal Ions via DNA-Mediated Recognition. Analytical Chemistry, 91(18), 11778-11784. DOI: 10.1021/acs.analchem.9b02385
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Article's DOI: 10.1021/acs.analchem.9b02385
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2019
    Publication Type: Journal Publications
  • Keywords:

    Analytical Chemistry,Chemistry, Analytical
    Surface-enhanced raman
    Speciation
    Silver
    Sensors
    Scattering analysis
    Quantification
    Design
    Alizarin-red-s
    Adsorption
    Química
    Medicina ii
    Medicina i
    Materiais
    Interdisciplinar
    Geociências
    General medicine
    Farmacia
    Ensino
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Enfermagem
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Ciência da computação
    Chemistry, analytical
    Biotecnología
    Biodiversidade
    Astronomia / física
    Analytical chemistry
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