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Analysis of institutional authors

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Poly(methylene blue)-ternary deep eutectic solvent/Au nanoparticle modified electrodes as novel electrochemical sensors: Optimization, characterization and application

Publicated to:ELECTROCHIMICA ACTA. 434 141295- - 2022-12-01 434(), DOI: 10.1016/j.electacta.2022.141295

Authors: Abad-Gil, Lucia; Brett, Christopher M A

Affiliations

Univ Autonoma Madrid, Fac Sci, Dept Analyt & Instrumental Anal, Madrid 28049, Spain - Author
Univ Coimbra, Fac Sci & Technol, Dept Chem, CEMMPRE, P-3004535 Coimbra, Portugal - Author
University of Coimbra, Centre for Mechanical Engineering, Materials and Processes - Author
University of Coimbra, Centre for Mechanical Engineering, Materials and Processes , Universidad Autónoma de Madrid - Author

Abstract

A new electrochemical sensor based on a nanocomposite formed by the electroactive redox polymer poly(methylene blue) (PMB) formed in a ternary deep eutectic solvent (DES) mixture, and gold nanoparticles (AuNP) was developed. The polymerisation of MB was carried out by potential cycling in ternary DES formed by choline chloride, ethylene glycol and fructose, containing 84% of the choline chloride: ethylene glycol mixture, in the presence of an acid dopant. The composition of the AuNP-chitosan dispersion was optimized by studying the effect of different concentrations of the nanoparticles and the polymer in the dispersion on the PMB film growth. The nanocomposite films obtained under different conditions were characterized by cyclic voltammetry, electrochemical impedance spectroscopy and scanning electron microscopy. The nanocomposite with the best characteristics was also obtained in aqueous media for comparison. The nanocomposite-based sensor formed by AuNP and PMB in DES was used for determining ascorbic acid (AA) and 5-aminosalicylic acid (5-ASA) by fixed potential amperometry at +0.20 V in 0.10 mol L−1 KCl and at +0.40 V in Britton-Robinson buffer at pH 7, respectively. Limits of detection of 0.40 μmol L−1 and 0.064 μmol L−1 were obtained for AA and 5-ASA, respectively, with the PMBDES/AuNP/GCE. The sensor was successfully applied to determine both analytes in pharmaceutical samples.

Keywords
5-aminosalicylic acidascorbatefoodgold nanoparticlesgraphite electrodepoly(methylene blue)samples5-aminosalicylic acidAscorbateAscorbic-acidGold nanoparticlesPoly(methylene blue)Ternary deep eutectic solvents

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal ELECTROCHIMICA ACTA due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2022, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Chemical Engineering (Miscellaneous). Notably, the journal is positioned above the 90th percentile.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 3.03. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 14, 2024)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Weighted Average of Normalized Impact by the Scopus agency: 4.36 (source consulted: FECYT Feb 2024)
  • Field Citation Ratio (FCR) from Dimensions: 4.4 (source consulted: Dimensions May 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-05-02, the following number of citations:

  • WoS: 18
  • Scopus: 24
  • OpenCitations: 21
Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-05-02:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 32 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

    It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

    • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
    Leadership analysis of institutional authors

    This work has been carried out with international collaboration, specifically with researchers from: Portugal.

    There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (ABAD GIL, LUCIA) .