Composites based on nitroprusside cyano-bridged coordination polymer particles and chitosan for NO delivery
Metadatos
Mostrar el registro completo del ítemEditorial
Royal Society of Chemistry
Fecha
2022-11-28Referencia bibliográfica
New J. Chem., 2023, Advance Article. DOI: [10.1039/d2nj04711j]
Patrocinador
Institut Carnot Chimie Balard Cirimat; SATT AxLRResumen
We report the design of new composite films {Fe[Fe(CN)5(NO)]}0.55@C6H11NO4 and {Ag2[Fe(CN)5(NO)]}0.28@
C6H11NO4 based on cyano-bridged coordination polymers FeII[FeII(CN)5(NO)] or Ag2
I[FeII(CN)5(NO)] grown
into a chitosan matrix that are able to provide a slow NO radical release under white light irradiation. The
characterisation methods such as X-ray diffraction, TGA, SEM-EDX, IR and UV-vis spectroscopies show that
these composites are made of ca. 50 wt% of the cyano-bridged coordination polymer as microcrystalline
particles embedded into chitosan films. Irradiation for 7 days by using white light results in initiating a 6.5
and 10.6% NO radical delivery for {Fe[Fe(CN)5(NO)]}0.55@C6H11NO4 and {Ag2[Fe(CN)5(NO)]}0.28@C6H11NO4,
respectively. The rearrangement of the cyano-bridged coordination compounds after the NO departure
leads to the formation of Prussian blue or silver Prussian blue analogues, which limits the unwanted release
of cyanide as a side effect.