Issue 7, 2023

Composites based on nitroprusside cyano-bridged coordination polymer particles and chitosan for NO delivery

Abstract

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 Ag2I[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.

Graphical abstract: Composites based on nitroprusside cyano-bridged coordination polymer particles and chitosan for NO delivery

Supplementary files

Article information

Article type
Paper
Submitted
23 sep 2022
Accepted
28 nov 2022
First published
28 nov 2022
This article is Open Access
Creative Commons BY-NC license

New J. Chem., 2023,47, 3207-3214

Composites based on nitroprusside cyano-bridged coordination polymer particles and chitosan for NO delivery

M. Gorra, F. N. Watchou, M. A. Palacios, J. Long, S. Sene, G. Félix, N. Tanchoux, F. Quignard, J. Larionova and Y. Guari, New J. Chem., 2023, 47, 3207 DOI: 10.1039/D2NJ04711J

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