Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 2 de 2
Filtrar
Más filtros

Bases de datos
Tipo del documento
Intervalo de año de publicación
1.
Small ; 20(8): e2305765, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37821399

RESUMEN

Solid proton electrolytes play a crucial role in various electrochemical energy storage and conversion devices. However, the development of fast proton conducting solid proton electrolytes at ambient conditions remains a significant challenge. In this study, a novel acidified nitrogen self-doped porous carbon material is presented that demonstrates exceptional superprotonic conduction for applications in solid-state proton battery. The material, designated as MSA@ZIF-8-C, is synthesized through the acidification of nitrogen-doped porous carbon, specifically by integrating methanesulfonic acid (MSA) into zeolitic imidazolate framework-derived nitrogen self-doped porous carbons (ZIF-8-C). This study reveals that MSA@ZIF-8-C achieves a record-high proton conductivity beyond 10-2  S cm-1 at ambient condition, along with good long-term stability, positioning it as a cutting-edge alternative solid proton electrolyte to the default aqueous H2 SO4 electrolyte in proton batteries.

2.
J Photochem Photobiol B ; 143: 148-62, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-25635907

RESUMEN

Two new dicopper(II) complexes bridged by N,N'-bis(dipropylenetriamine)oxamide (H2oxdipn), namely, [Cu2(oxdipn)](pic)2(1) and [Cu2(oxdipn)(ClO4)2] (2), where pic represents picrate ion, have been synthesized and characterized by elemental analyses, molar conductance measurements, IR and electronic spectral studies, and X-ray single crystal diffraction. In both dicopper(II) complexes, the two copper(II) ions are bridged by trans-oxdipn ligand with the Cu⋯Cu separations of 5.2536(15) and 5.231(2)Å, respectively. The copper(II) ion in complex 1 has a square-planar coordination geometry, while that in 2, a square-pyramidal. Linked with classical hydrogen bonds, the molecules of complex 1 consist of a one-dimensional chain, while complex 2 molecules result in a two-dimensional structure. Numerous hydrogen bonds link complex 1 or 2 into a 2-D infinite network. In vitro cytotoxicity experiment shows that the two dicopper(II) complexes exhibit cytotoxic effects against the selected tumor cell lines. The reactivity towards herring sperm DNA (HS-DNA) and bovine serum albumin (BSA) reveals that the two dicopper(II) complexes can interact with the DNA in the mode of intercalation, and effectively quench the intrinsic fluorescence of BSA via a static mechanism. The influence of different counterions in this kind of dicopper(II) complexes on DNA/BSA-binding properties, and the in vitro cytotoxic activities was investigated.


Asunto(s)
Cobre/química , ADN/metabolismo , Compuestos Organometálicos/síntesis química , Compuestos Organometálicos/farmacología , Ácido Oxámico/análogos & derivados , Albúmina Sérica Bovina/metabolismo , Animales , Antineoplásicos/síntesis química , Antineoplásicos/química , Antineoplásicos/metabolismo , Antineoplásicos/farmacología , Sitios de Unión , Bovinos , Línea Celular Tumoral , Técnicas de Química Sintética , Cristalografía por Rayos X , ADN/química , Humanos , Sustancias Intercalantes/síntesis química , Sustancias Intercalantes/química , Sustancias Intercalantes/metabolismo , Sustancias Intercalantes/farmacología , Ligandos , Modelos Moleculares , Conformación Molecular , Compuestos Organometálicos/química , Compuestos Organometálicos/metabolismo , Ácido Oxámico/química , Viscosidad
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA