RT Journal Article
T1 10-Fold Quantum Yield Improvement of Ag2S Nanoparticles by Fine Compositional Tuning
A1 Ortega Rodríguez, Alicia
A1 Shen, Yingli
A1 Zabala Gutiérrez, Irene
A1 Santos, Harrison D. A.
A1 Torres Vera, Vivian Andrea
A1 Ximedes, Erving
A1 Villaverde Cantizano, Gonzalo
A1 Lifante, José
A1 Gerke, Christoph
A1 Fernández Monsalve, Nuria
A1 Gómez Calderón, Óscar
A1 Melle Hernández, Sonia
A1 Marqués Hueso, José
A1 Méndez González, Diego
A1 Laurenti, Marco
A1 Jones, Callum M. S.
A1 López Romero, Juan Manuel
A1 Contreras Cáceres, Rafael
A1 Jaque García, Daniel
A1 Rubio Retama, Benito Jorge
A2 Garma Pons, Santiago
AB 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..
PB ACS
SN 1944-8244
YR 2020
FD 2020-02-18
LK https://hdl.handle.net/20.500.14352/6125
UL https://hdl.handle.net/20.500.14352/6125
LA eng
NO Ortega Rodríguez, A., Shen, Y., Zabala gutiérrez, I., et al. «10-Fold Quantum Yield Improvement of Ag 2 S Nanoparticles by Fine Compositional Tuning». ACS Applied Materials & Interfaces, vol. 12, n.o 11, marzo de 2020, pp. 12500-09. DOI.org (Crossref), https://doi.org/10.1021/acsami.9b22827.
NO Unión Europea
NO Ministerio de Economía, Comercio y Empresa (España)
NO Comunidad de Madrid
NO Universidad Complutense de Madrid/Banco de Santander
NO Fundación para el Futuro de Colombia Colfuturo
DS Docta Complutense
RD 17 jul 2024