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Issue 11, 2014
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Light-triggered CO release from nanoporous non-wovens

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Abstract

The water insoluble and photoactive CO releasing molecule dimanganese decacarbonyl (CORM-1) has been non-covalently embedded into poly(L-lactide-co-D/L-lactide) fibers via electrospinning to enable bioavailability and water accessibility of CORM-1. SEM images of the resulting hybrid non-wovens reveal a nanoporous fiber morphology. Slight CO release from the CORM-1 in the electrospinning process induces nanoporosity. IR spectra show the same set of carbonyl bands for the CORM-1 precursor and the non-woven. When the material was exposed to light (365–480 nm), CO release from the incorporated CORM-1 was measured via heterogeneous myoglobin assay, a portable CO electrode and an IR gas cuvette. The CO release rate was wavelength dependent. Irradiation at 365 nm resulted in four times faster release than at 480 nm. 3.4 μmol of CO per mg non-woven can be generated. Mouse fibroblast 3T3 cells were used to show that the hybrid material is non-toxic in the darkness and strongly photocytotoxic when light is applied.

Graphical abstract: Light-triggered CO release from nanoporous non-wovens

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Publication details

The article was received on 22 Nov 2013, accepted on 15 Jan 2014 and first published on 11 Feb 2014


Article type: Paper
DOI: 10.1039/C3TB21649G
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Citation: J. Mater. Chem. B, 2014,2, 1454-1463
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    Light-triggered CO release from nanoporous non-wovens

    C. Bohlender, S. Gläser, M. Klein, J. Weisser, S. Thein, U. Neugebauer, J. Popp, R. Wyrwa and A. Schiller, J. Mater. Chem. B, 2014, 2, 1454
    DOI: 10.1039/C3TB21649G

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