10-Fold Quantum Yield Improvement of Ag2S Nanoparticles by Fine Compositional Tuning
Author
Ortega-Rodríguez, Alicia; Shen, Yingli; Zabala Gutierrez, Irene; Santos, Harrison D.A.; Torres Vera, Vivian; Ximendes, Erving; Villaverde, Gonzalo; Lifante, José; Gerke, Christoph; Fernández Monsalve, Nuria; Calderón, Oscar G.; Melle, Sonia; Marques-Hueso, José; Mendez-Gonzalez, Diego; Laurenti, Marco; Jones, Callum M.S.; López-Romero, Juan Manuel; Contreras-Cáceres, Rafael; Jaque García, Daniel; Rubio-Retama, JorgeEntity
UAM. Departamento de Física de MaterialesPublisher
American Chemistry SocietyDate
2020-03-18Citation
10.1021/acsami.9b22827
ACS Applied Materials and Interfaces 12.11 (2020): 12500-12509
ISSN
1944-8244 (print); 1944-8252 (online)DOI
10.1021/acsami.9b22827Funded by
This work was partially supported by the Ministerio de Economía y Competitividad de España MAT2017-83111R, MAT2016-75362-C3-1-R, RTI2018-094859-B-100, and CTQ2016-76311 by the Comunidad Autónoma de Madrid (B2017/BMD-3867RENIM-CM) and cofinanced by the European Structural and investment fund. Additional funding was provided by the European Commission, Horizon 2020 project NanoTBTech. RCC acknowledges the funding to the Comunidad de Madrid for the “Atracción de Talento” fellowship with reference no. 2018-T1/IND-10736. D.M.-G. thanks UCM-Santander for a postdoctoral contract (CT17/17-CT18/17)Project
Gobierno de España. MAT2016-75362-C3-1-R; Gobierno de España. RTI2018-094859-B-100; Gobierno de España. CTQ2016-76311; Comunidad de Madrid. B2017/BMD-3867/RENIM-CM; Comunidad de Madrid. 2018-T1/IND-10736; info:eu-repo/grantAgreement/EC/H2020/801305/EU//NanoTBTech; Gobierno de España. MAT2017-83111-REditor's Version
https://doi.org/10.1021/acsami.9b22827Subjects
Ag S/Ag nanoparticles 2; fluorescent probes; NIR-II imaging; PL lifetime; PLQY; synthesis optimization; QuímicaNote
This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials and Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see: https://pubs.acs.org/doi/10.1021/acsami.9b22827Rights
© 2020 American Chemical SocietyAbstract
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
Files in this item
Google Scholar:Ortega-Rodríguez, Alicia
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Shen, Yingli
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Zabala Gutierrez, Irene
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Santos, Harrison D.A.
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Torres Vera, Vivian
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Ximendes, Erving
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Villaverde, Gonzalo
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Lifante, José
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Gerke, Christoph
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Fernández Monsalve, Nuria
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Calderón, Oscar G.
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Melle, Sonia
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Marques-Hueso, José
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Mendez-Gonzalez, Diego
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Laurenti, Marco
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Jones, Callum M.S.
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López-Romero, Juan Manuel
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Contreras-Cáceres, Rafael
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Jaque García, Daniel
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Rubio-Retama, Jorge
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