Photoejection–recapture of the Ca2+ cation ...
Type de document :
Article dans une revue scientifique: Article original
DOI :
URL permanente :
Titre :
Photoejection–recapture of the Ca2+ cation studied by time resolved spectroscopy and TDDFT calculations: the case study of an azacrown–iridium(III) complex
Auteur(s) :
Guerrin, Clement [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
De Thieulloy, L. [Auteur]
Institute of Chemistry for Life and Health Sciences [iCLeHS]
Dubois, Julien [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Barois, Clément [Auteur]
Photophysique et Photochimie Supramoléculaires et Macromoléculaires [PPSM]
Perrier, Aurélie [Auteur]
Laboratoire Interdisciplinaire des Energies de Demain [LIED (UMR_8236)]
Institute of Chemistry for Life and Health Sciences [iCLeHS]
Leray, Isabelle [Auteur]
Photophysique et Photochimie Supramoléculaires et Macromoléculaires [PPSM]
Mongin, Cedric [Auteur]
Photophysique et Photochimie Supramoléculaires et Macromoléculaires [PPSM]
Aloise, Stephane [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
De Thieulloy, L. [Auteur]
Institute of Chemistry for Life and Health Sciences [iCLeHS]
Dubois, Julien [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Barois, Clément [Auteur]
Photophysique et Photochimie Supramoléculaires et Macromoléculaires [PPSM]
Perrier, Aurélie [Auteur]
Laboratoire Interdisciplinaire des Energies de Demain [LIED (UMR_8236)]
Institute of Chemistry for Life and Health Sciences [iCLeHS]
Leray, Isabelle [Auteur]
Photophysique et Photochimie Supramoléculaires et Macromoléculaires [PPSM]
Mongin, Cedric [Auteur]
Photophysique et Photochimie Supramoléculaires et Macromoléculaires [PPSM]
Aloise, Stephane [Auteur]

Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Titre de la revue :
New Journal of Chemistry
Nom court de la revue :
New J. Chem.
Éditeur :
Royal Society of Chemistry
Date de publication :
2024-07-25
ISSN :
1144-0546
Discipline(s) HAL :
Chimie/Chimie théorique et/ou physique
Résumé en anglais : [en]
In this study, we examined the photophysical properties of an azacrown–iridium(III) complex while focusing on its interactions with calcium ions (Ca2+). We explored the dynamic processes within the complex combining ...
Lire la suite >In this study, we examined the photophysical properties of an azacrown–iridium(III) complex while focusing on its interactions with calcium ions (Ca2+). We explored the dynamic processes within the complex combining time-dependent density functional theory (TDDFT) calculations and time-resolved spectroscopies. In the presence of Ca2+, the complex exhibits significant shifts in absorption and emission profiles, from 494 nm to 375 nm, aligning with theoretical predictions. Notably, we observed the ultrafast photo-ejection of Ca2+ within 70 femtoseconds, followed by its recapture in 250 nanoseconds, revealing a 10-million-fold timescale difference between the two phenomena. These behaviors confirm the established photophysical properties of polypyridyl iridium(III) complexes and their intrinsic sensitivity to their surrounding environment. Our comprehensive kinetic analysis highlights the azacrown moiety's competitive binding and photo-release capabilities, suggesting its potential for practical sensing applications. The versatile properties of these iridium(III) complexes offer promising prospects for their application as stimuli-responsive materials and in advanced optoelectronic devices, targeted imaging, and biomedical ion sensors and delivery systems.Lire moins >
Lire la suite >In this study, we examined the photophysical properties of an azacrown–iridium(III) complex while focusing on its interactions with calcium ions (Ca2+). We explored the dynamic processes within the complex combining time-dependent density functional theory (TDDFT) calculations and time-resolved spectroscopies. In the presence of Ca2+, the complex exhibits significant shifts in absorption and emission profiles, from 494 nm to 375 nm, aligning with theoretical predictions. Notably, we observed the ultrafast photo-ejection of Ca2+ within 70 femtoseconds, followed by its recapture in 250 nanoseconds, revealing a 10-million-fold timescale difference between the two phenomena. These behaviors confirm the established photophysical properties of polypyridyl iridium(III) complexes and their intrinsic sensitivity to their surrounding environment. Our comprehensive kinetic analysis highlights the azacrown moiety's competitive binding and photo-release capabilities, suggesting its potential for practical sensing applications. The versatile properties of these iridium(III) complexes offer promising prospects for their application as stimuli-responsive materials and in advanced optoelectronic devices, targeted imaging, and biomedical ion sensors and delivery systems.Lire moins >
Langue :
Anglais
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
Université de Lille
CNRS
CNRS
Collections :
Équipe(s) de recherche :
Photodynamique, confinement, solvatation (PCS)
Date de dépôt :
2024-08-19T21:02:44Z
2024-08-27T11:43:00Z
2024-08-27T11:43:00Z
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