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[Ga 3+ 8 Sm 3+ 2 , Ga 3+ 8 Tb 3+ 2 ] Metallacrowns are Highly Promising Ratiometric Luminescent Molecular Nanothermometers Operating at Physiologically Relevant Temperatures
Author(s) -
Salerno Elvin V.,
Zeler Justyna,
Eliseeva Svetlana V.,
HernándezRodríguez Miguel A.,
Carneiro Neto Albano N.,
Petoud Stéphane,
Pecoraro Vincent L.,
Carlos Luís D.
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202003239
Subject(s) - luminescence , analytical chemistry (journal) , atmospheric temperature range , materials science , thermometer , sensitivity (control systems) , aqueous suspension , aqueous solution , chemistry , physics , optoelectronics , chromatography , thermodynamics , electronic engineering , engineering
Nanothermometry is the study of temperature at the submicron scale with a broad range of potential applications, such as cellular studies or electronics. Molecular luminescent‐based nanothermometers offer a non‐contact means to record these temperatures with high spatial resolution and thermal sensitivity. A luminescent‐based molecular thermometer comprised of visible‐emitting Ga 3+ /Tb 3+ and Ga 3+ /Sm 3+ metallacrowns (MCs) achieved remarkable relative thermal sensitivity associated with very low temperature uncertainty of S r = 1.9 % K −1 and δT <0.045 K, respectively, at 328 K, as an aqueous suspension of polystyrene nanobeads loaded with the corresponding MCs. To date, they are the ratiometric molecular nanothermometers offering the highest level of sensitivity in the physiologically relevant temperature range.