by Peijiang Wang, Rafael Morales-Márquez, Gabriel Cervás, Alejandro Hernández Medel, Marina Paris Ogayar, D. Jimenez de Aberasturi, Ana Ines de Isidro-Gomez, Almudena Torres-Pardo, Francisco Javier Palomares, Saül Garcia-Orrit, Célia T. Sousa, Ana Espinosa, Helmut H. Telle, Dirk H. Ortgies, Víctor Vega-Mayoral, Juan Cabanillas-González, Emma Martín Rodríguez, Ute Resch-Genger, K. David Wegner and Beatriz H. Juárez
Abstract:
Highly emissive Ag2S nanocrystals (NCs) passivated with a gradated shell incorporating Se and Zn were synthesized in air, and the temperature dependence of their photoluminescence quantum yield (PLQY) was quantified in both organic and aqueous media at ∼1200 nm. The relevance of this parameter, measured at physiological temperatures, is highlighted for applications that rely on the near infrared (NIR) photoluminescence of NCs, such as deep NIR imaging or luminescence nanothermometry. Hyperspectral NIR imaging shows that Ag2S-based NCs with a PLQY in organic media of about 10% are inefficient for imaging at 40 °C through 20 mm thick tissue with low laser irradiation power densities. In contrast, water-transferred Ag2S-based NCs with an initial PLQY of 2% in water exhibit improved robustness against temperature changes, enabling improved imaging performance.
Reference:
Peijiang Wang, Rafael Morales-Márquez, Gabriel Cervás, Alejandro Hernández Medel, Marina Paris Ogayar, D. Jimenez de Aberasturi, Ana Ines de Isidro-Gomez, Almudena Torres-Pardo, Francisco Javier Palomares, Saül Garcia-Orrit, Célia T. Sousa, Ana Espinosa, Helmut H. Telle, Dirk H. Ortgies, Víctor Vega-Mayoral, Juan Cabanillas-González, Emma Martín Rodríguez, Ute Resch-Genger, K. David Wegner and Beatriz H. Juárez, “The role of temperature in the photoluminescence quantum yield (PLQY) of Ag2S-based nanocrystals”, Materials Horizons.
Bibtex Entry:
@article{wang_role_2024,
title = {The role of temperature in the photoluminescence quantum yield ({PLQY}) of {Ag2S}-based nanocrystals},
issn = {2051-6355},
url = {https://pubs.rsc.org/en/content/articlelanding/2024/mh/d4mh01016g},
doi = {10.1039/D4MH01016G},
abstract = {Highly emissive Ag2S nanocrystals (NCs) passivated with a gradated shell incorporating Se and Zn were synthesized in air, and the temperature dependence of their photoluminescence quantum yield (PLQY) was quantified in both organic and aqueous media at ∼1200 nm. The relevance of this parameter, measured at physiological temperatures, is highlighted for applications that rely on the near infrared (NIR) photoluminescence of NCs, such as deep NIR imaging or luminescence nanothermometry. Hyperspectral NIR imaging shows that Ag2S-based NCs with a PLQY in organic media of about 10% are inefficient for imaging at 40 °C through 20 mm thick tissue with low laser irradiation power densities. In contrast, water-transferred Ag2S-based NCs with an initial PLQY of 2% in water exhibit improved robustness against temperature changes, enabling improved imaging performance.},
language = {en},
urldate = {2024-11-21},
journal = {Materials Horizons},
author = {Wang, Peijiang and Morales-Márquez, Rafael and Cervás, Gabriel and Medel, Alejandro Hernández and Ogayar, Marina Paris and Aberasturi, D. Jimenez de and Isidro-Gomez, Ana Ines de and Torres-Pardo, Almudena and Palomares, Francisco Javier and Garcia-Orrit, Saül and Sousa, Célia T. and Espinosa, Ana and Telle, Helmut H. and Ortgies, Dirk H. and Vega-Mayoral, Víctor and Cabanillas-González, Juan and Rodríguez, Emma Martín and Resch-Genger, Ute and Wegner, K. David and Juárez, Beatriz H.},
month = sep,
year = {2024},
file = {Full Text PDF:E:\Usuarios\Administrator\Zotero\storage\6YUPNRY5\Wang et al. - 2024 - The role of temperature in the photoluminescence q.pdf:application/pdf;Supplementary Information PDF:E:\Usuarios\Administrator\Zotero\storage\87JNZP6C\Wang et al. - 2024 - The role of temperature in the photoluminescence q.pdf:application/pdf},
}