Composites based on nitroprusside cyano-bridged coordination polymer particles and chitosan for NO delivery
| Autor: | Melvyn Gorra, Frantz Ndebulia Watchou, Maria A. Palacios, Jérôme Long, Saad Sene, Gautier Félix, Nathalie Tanchoux, Françoise Quignard, Joulia Larionova, Yannick Guari |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | New Journal of Chemistry. 47:3207-3214 |
| ISSN: | 1369-9261 1144-0546 |
| Popis: | 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. Institut Carnot Chimie Balard Cirimat SATT AxLR |
| Databáze: | OpenAIRE |
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