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100

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Analysis of institutional authors

Ximendes EAuthorLifante JAuthorFernández NAuthorJaque DCorresponding Author

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June 12, 2020
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10-Fold Quantum Yield Improvement of Ag2S Nanoparticles by Fine Compositional Tuning

Publicated to: ACS Applied Materials & Interfaces. 12 (11): 12500-12509 - 2020-03-18 12(11), DOI: 10.1021/acsami.9b22827

Authors:

Ortega-Rodriguez, Alicia; Shen, Yingli; Zabala Gutierrez, Irene; Santos, Harrison D A; Torres Vera, Vivian; Ximendes, Erving; Villaverde, Gonzalo; Lifante, Jose; Gerke, Christoph; Fernandez, Nuria; Calderon, Oscar G; Melle, Sonia; Marques-Hueso, Jose; Mendez-Gonzalez, Diego; Laurenti, Marco; Jones, Callum M S; Manuel Lopez-Romero, Juan; Contreras-Caceres, Rafael; Jaque, Daniel; Rubio-Retama, Jorge
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Affiliations

Heriot Watt Univ, Sch Engn & Phys Sci EPS, ISSS, Edinburgh EH15 2BR, Midlothian, Scotland - Author
Heriot-Watt University, Edinburgh - Author
Instituto Ramón y Cajal de Investigación Sanitaria - Author
IRYCIS, Nanobiol Grp, Madrid 28034, Spain - Author
Univ Autonoma Madrid, Fac Ciencias, Fluorescence Imaging Grp, E-28049 Madrid, Spain - Author
Univ Complutense Madrid, Dept Opt, Madrid 28037, Spain - Author
Univ Complutense Madrid, Dept Quim Ciencias Farmaceut, E-28040 Madrid, Spain - Author
Univ Malaga, Dept Quim Organ, Fac Ciencias, E-29071 Malaga, Spain - Author
Universidad Autónoma de Madrid - Author
Universidad Complutense de Madrid - Author
Universidad de Málaga - Author
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Abstract

Copyright © 2020 American Chemical Society. Ag2S semiconductor nanoparticles (NPs) are near-infrared luminescent probes with outstanding properties (good biocompatibility, optimum spectral operation range, and easy biofunctionalization) that make them ideal probes for in vivo imaging. Ag2S NPs have, indeed, made possible amazing challenges including in vivo brain imaging and advanced diagnosis of the cardiovascular system. Despite the continuous redesign of synthesis routes, the emission quantum yield (QY) of Ag2S NPs is typically below 0.2%. This leads to a low luminescent brightness that avoids their translation into the clinics. In this work, an innovative synthetic methodology that permits a 10-fold increment in the absolute QY from 0.2 up to 2.3% is presented. Such an increment in the QY is accompanied by an enlargement of photoluminescence lifetimes from 184 to 1200 ns. The optimized synthetic route presented here is based on a fine control over both the Ag core and the Ag/S ratio within the NPs. Such control reduces the density of structural defects and decreases the nonradiative pathways. In addition, we demonstrate that the superior performance of the Ag2S NPs allows for high-contrast in vivo bioimaging.
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Keywords

ag2s/ag nanoparticlesfluorescent probesnir-ii imagingpl lifetimeplqyAg s/ag nanoparticles 2Ag2s/ag nanoparticlesCarbon nanotubesDotsElectronic-structureFluorescent probesIn-vivoNanocrystalsNir-ii imagingPl lifetimePlqySynthesis optimizationToxicology

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal ACS Applied Materials & Interfaces due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2020, it was in position 44/334, thus managing to position itself as a Q1 (Primer Cuartil), in the category Materials Science, Multidisciplinary.

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: 1.21. 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 13, 2025)

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: 2.09 (source consulted: FECYT Mar 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2026-03-18, the following number of citations:

  • WoS: 33
  • Scopus: 33
  • Google Scholar: 33
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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 2026-03-18:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 38.
  • 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: 38 (PlumX).

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

  • The Total Score from Altmetric: 3.
  • The number of mentions on the social network X (formerly Twitter): 4 (Altmetric).

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:

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Leadership analysis of institutional authors

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

the author responsible for correspondence tasks has been JAQUE GARCIA, DANIEL.

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