{"id":647,"date":"2025-09-29T14:23:08","date_gmt":"2025-09-29T14:23:08","guid":{"rendered":"https:\/\/wp.icmm.csic.es\/realm\/?p=647"},"modified":"2025-09-29T14:28:44","modified_gmt":"2025-09-29T14:28:44","slug":"gdvo4tbeu-nanoparticles-carbon-dots-composites-for-luminescent-nanothermometry","status":"publish","type":"post","link":"https:\/\/wp.icmm.csic.es\/realm\/2025\/09\/29\/gdvo4tbeu-nanoparticles-carbon-dots-composites-for-luminescent-nanothermometry\/","title":{"rendered":"GdVO4:Tb,Eu nanoparticles\/Carbon Dots Composites for Luminescent Nanothermometry"},"content":{"rendered":"<p>CDs derived from eco-friendly precursors (xylose and biomass-derived hemicellulose) are combined with GdVO\u2084:Tb,Eu nanoparticles via two distinct approaches: (i) hydrothermal deposition onto the lanthanide-doped particles and (ii) physical mixing of prefabricated components. Notably, the spectroscopic properties of the resulting composites depend on the fabrication route, see our work published in<em> Adv. Mater. Interfaces<\/em> 2025, e00410, doi: 10.1002\/admi.202500410. While method (i) enables competitive energy transfers from the vanadate charge transfer band (CTB) to Eu\u00b3\u207a and CDs, method (ii), which involves lower concentrations of the emissive components, promotes a cooperative mechanism wherein CDs sensitize the CTB, enhancing the Eu\u00b3\u207a red emission. In both scenarios, Tb<sup>3+<\/sup> is believed to serve as an intermediary, aiding the repopulation of the Eu<sup>3+<\/sup> <sup>5<\/sup>D<sub>j<\/sub> energy levels. The dual-emissive nature of the composites results in violet-magenta chromaticity, reflecting intermediate behavior between the blue CDs and red-emitting Ln-NPs, and supporting their use in tunable optical applications. <strong>The described mechanisms also influence the composites&#8217; performance as ratiometric nanothermometers<\/strong>. Upon evaluating their thermal response from 298 K to 358 K, distinct behaviors emerge, with <strong>relative thermal sensitivities ranging from 0.84 % K\u207b\u00b9 (298 K) to 5.6 % K\u207b\u00b9 (358 K)\u2014the latter being among the highest reported for similar material<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-649\" src=\"https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2025\/09\/ABSTRACT-GRAFICO-Adv-Mater-Interf-2025-300x274.jpg\" alt=\"\" width=\"300\" height=\"274\" srcset=\"https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2025\/09\/ABSTRACT-GRAFICO-Adv-Mater-Interf-2025-300x274.jpg 300w, https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2025\/09\/ABSTRACT-GRAFICO-Adv-Mater-Interf-2025.jpg 568w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-558\" src=\"https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2024\/02\/LogoPID-e1732011200180-300x82.jpg\" alt=\"\" width=\"300\" height=\"82\" srcset=\"https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2024\/02\/LogoPID-e1732011200180-300x82.jpg 300w, https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2024\/02\/LogoPID-e1732011200180-1024x280.jpg 1024w, https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2024\/02\/LogoPID-e1732011200180-768x210.jpg 768w, https:\/\/wp.icmm.csic.es\/realm\/wp-content\/uploads\/sites\/28\/2024\/02\/LogoPID-e1732011200180.jpg 1070w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>CDs derived from eco-friendly precursors (xylose and biomass-derived hemicellulose) are combined with GdVO\u2084:Tb,Eu nanoparticles via two distinct approaches: (i) hydrothermal deposition onto the lanthanide-doped particles and (ii) physical mixing of prefabricated components. Notably, the spectroscopic properties of the resulting composites depend on the fabrication route, see our work published in Adv. Mater. Interfaces 2025, e00410, &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/wp.icmm.csic.es\/realm\/2025\/09\/29\/gdvo4tbeu-nanoparticles-carbon-dots-composites-for-luminescent-nanothermometry\/\" class=\"more-link\">Continuar leyendo<span class=\"screen-reader-text\"> \u00abGdVO4:Tb,Eu nanoparticles\/Carbon Dots Composites for Luminescent Nanothermometry\u00bb<\/span><\/a><\/p>\n","protected":false},"author":52,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-647","post","type-post","status-publish","format-standard","hentry","category-sin-categoria"],"_links":{"self":[{"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/posts\/647","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/users\/52"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/comments?post=647"}],"version-history":[{"count":4,"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/posts\/647\/revisions"}],"predecessor-version":[{"id":653,"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/posts\/647\/revisions\/653"}],"wp:attachment":[{"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/media?parent=647"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/categories?post=647"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wp.icmm.csic.es\/realm\/wp-json\/wp\/v2\/tags?post=647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}