[Ga3+ 8 Sm3+ 2 , Ga3+ 8 Tb3+ 2 ] Metallacrowns are Highly Promising Ratiometric Luminescent Molecular Nanothermometers Operating at Physiologically Relevant Temperatures.
Chemistry
; 26(61): 13792-13796, 2020 Nov 02.
Article
de En
| MEDLINE
| ID: mdl-32663350
ABSTRACT
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 Ga3+ /Tb3+ and Ga3+ /Sm3+ metallacrowns (MCs) achieved remarkable relative thermal sensitivity associated with very low temperature uncertainty of Sr =1.9 % K-1 and δT<0.045â
K, respectively, at 328â
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.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Composés organométalliques
/
Samarium
/
Terbium
/
Gallium
Langue:
En
Journal:
Chemistry
Sujet du journal:
QUIMICA
Année:
2020
Type de document:
Article
Pays d'affiliation:
États-Unis d'Amérique