A cyclometalated N-heterocyclic carbene and acetylacetonate ligands in a phosphorescent Pt(II) dye for sensing glucose

Melendo, Irene ; Camacho-Aguayo, Javier (Universidad de Zaragoza) ; Paziresh, Sareh ; Fuertes, Sara ; Martín, Antonio ; Marcos, Susana de (Universidad de Zaragoza) ; Galbán, Javier (Universidad de Zaragoza) ; Sicilia, Violeta (Universidad de Zaragoza)

Resumen: New β-diketonate platinum (II) complexes, containing a cyclometalated N-heterocyclic carbene [Pt(Naph^C*iPr)(acac)] (3A) (HNaph^C*-κC* = 3-isopropyl-1-(naphthalen-2-yl)-1H-imidazole-2-ylidene), or a cyclometalated pyrazole, [Pt(Naph^Npz)(acac)] (3B) (HC^Npz = 1-(naphthalen-2-yl)-1H-pyrazole) and [Pt(Naph^Ndmpz)(acac)] (3B') (HC^Ndmpz = 1-(naphthalen-2-yl)-1H-3,5-dimethylpyrazole) have been prepared and characterized. Their absorption and emission properties in films of ethyl cellulose (EC) were determined along with those of the already reported for complex [Pt(Naph^C*Me)(acac)] (3A'). They showed that all four β-diketonate complexes display a bright phosphorescent emission with maxima in the blue region (λmax ∼ 480 nm for 3A and 3A'; 490 nm 3B and 3B'). The higher quantum yield (QY), longer decay times and greater oxygen sensitivity were exhibited by the Naph^C* derivatives, compared to the Naph^N ones. Polyacrylamide membranes with entrapped 3A' as dye, and glucose oxidase (GOx) enzyme were used for monitoring glucose level. The RSD is about 5% and the detection limit is at ∼5·10−4 M, with a response time usually of 10–15 min working in stop-flow mode. These platinum-based membranes respond reversibly to glucose for, at least, 20 measures. 3A’ is the first Pt(II) complex bearing a cyclometalated N-heterocyclic carbene ever used as dye for sensing glucose.

Idioma: Inglés

DOI: 10.1016/j.dyepig.2023.111630

Año: 2023

Publicado en: Dyes and Pigments 219 (2023), 111630 [9 pp.]
ISSN: 0143-7208

Factor impacto JCR: 4.1 (2023)

Categ. JCR: MATERIALS SCIENCE, TEXTILES rank: 3 / 30 = 0.1 (2023) - Q1 - T1
Categ. JCR: CHEMISTRY, APPLIED rank: 20 / 74 = 0.27 (2023) - Q2 - T1
Categ. JCR: ENGINEERING, CHEMICAL rank: 49 / 170 = 0.288 (2023) - Q2 - T1

Factor impacto CITESCORE: 8.2 - Chemical Engineering (all) (Q1) - Process Chemistry and Technology (Q2)

Factor impacto SCIMAGO: 0.669 - Process Chemistry and Technology (Q2) - Chemical Engineering (miscellaneous) (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E17-20R
Financiación: info:eu-repo/grantAgreement/ES/DGA/E25-20R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2021-122869NB-I00
Financiación: info:eu-repo/grantAgreement/ES/MINECO/PID2019-105408GB-I00

Tipo y forma: Article (Published version)

Área (Departamento): Área Química Inorgánica (Dpto. Química Inorgánica)
Área (Departamento): Área Química Analítica (Dpto. Química Analítica)