Dynamics of Citrate Coordination on Gold Nanoparticles Under Low Specific Power Laser-Induced Heating
| العنوان: | Dynamics of Citrate Coordination on Gold Nanoparticles Under Low Specific Power Laser-Induced Heating |
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| المؤلفون: | Danilo Oliveira de Souza, Jean‐Sébastien Girardon, David J. Hoffmann, Elise Berrier |
| المساهمون: | Elettra Sincrotrone Trieste, Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | ChemPhysChem ChemPhysChem, 2022, ChemPhysChem, 24 (7), pp.e202200744. ⟨10.1002/cphc.202200744⟩ |
| بيانات النشر: | HAL CCSD, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, SERS, nanoparticles, [CHIM.CATA]Chemical Sciences/Catalysis, Physical and Theoretical Chemistry, gold, citrate coordination, Atomic and Molecular Physics, and Optics, time-resolved SERS |
| الوصف: | International audience; SERS evolution recorded over a drop-coated coffee-ring pattern of citrate-capped gold colloids was investigated as a function of time under low-specific laser power. Spectral changes caused by plasmon-induced reaction could not be detected, but a long-term transient original spectral profile showing additional lines was observed. We performed deep qualitative and quantitative SERS intensity variation analysis based on the complementary use of extreme deviation and cross-correlation statistics, which provided further insights on the behavior of citrate-capping layers of gold nanoparticles upon laser illumination. More precisely, the cross-correlation analysis made possible to follow the so-called individual events denoting particular resonance structures, in which groups of modes were assigned to an evolution of citrate coordination on gold surface driven by photo-activation. As a consequence, the detection limit was increased and new lines were related to the presence of a very low amount of dicarboxy-acetone (DCA), which was already present in the system. |
| اللغة: | English |
| تدمد: | 1439-4235 1439-7641 |
| DOI: | 10.1002/cphc.202200744⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49c94770778f1c2249a6a9d930c3a78d https://hal.univ-lille.fr/hal-04138186 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....49c94770778f1c2249a6a9d930c3a78d |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14394235 14397641 |
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| DOI: | 10.1002/cphc.202200744⟩ |