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Open AccessFeature PaperArticle

Electrospun Composites of Polycaprolactone and Porous Silicon Nanoparticles for the Tunable Delivery of Small Therapeutic Molecules

Future Industries Institute, University of South Australia, Mawson Lakes 5095, Australia
Department of Chemistry, University College London, London WC1E 6BT, UK
MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6012, New Zealand
Monash Institute of Pharmaceutical Sciences, Monash University, Parkville 3052, Australia
Commonwealth Scientific and Industrial Research Organisation (CSIRO), Clayton 3168, Australia
Author to whom correspondence should be addressed.
Nanomaterials 2018, 8(4), 205;
Received: 28 February 2018 / Revised: 26 March 2018 / Accepted: 27 March 2018 / Published: 29 March 2018
(This article belongs to the Special Issue Electrochemically Engineering of Nanoporous Materials)
This report describes the use of an electrospun composite of poly(ε-caprolactone) (PCL) fibers and porous silicon (pSi) nanoparticles (NPs) as an effective system for the tunable delivery of camptothecin (CPT), a small therapeutic molecule. Both materials are biodegradable, abundant, low-cost, and most importantly, have no known cytotoxic effects. The composites were treated with and without sodium hydroxide (NaOH) to investigate the wettability of the porous network for drug release and cell viability measurements. CPT release and subsequent cell viability was also investigated. We observed that the cell death rate was not only affected by the addition of our CPT carrier, pSi, but also by increasing the rate of dissolution via treatment with NaOH. This is the first example of loading pSi NPs as a therapeutics nanocarrier into electronspun PCL fibers and this system opens up new possibilities for the delivery of molecular therapeutics. View Full-Text
Keywords: porous silicon; drug delivery; electrospinning; poly(ε-caprolactone) porous silicon; drug delivery; electrospinning; poly(ε-caprolactone)
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McInnes, S.J.P.; Macdonald, T.J.; Parkin, I.P.; Nann, T.; Voelcker, N.H. Electrospun Composites of Polycaprolactone and Porous Silicon Nanoparticles for the Tunable Delivery of Small Therapeutic Molecules. Nanomaterials 2018, 8, 205.

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