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The use of intrinsic chiral molecules opens the door to bio-imaging specific tools and to the development of target-therapy. In this work the synthesis and characterization of polythiophenes with alkyl side chains containing one R or S chiral carbon is reported. Enantiopure chiral nanoparticles (R or S NPs) were prepared from the polymers by a reprecipitation method. UV-vis, photoluminescence and circular dichroism spectroscopy of the NPs are described. In vitro analysis and metabolic assays show that both R and S NPs are efficiently taken-up by fibroblast cells without signs of toxicity. SDS-PAGE experiments show that formation of hard protein ‘corona’ enhances the chirality difference between nanoparticles. Co-localization experiments demonstrate that the cells are able to discriminate between the enantiomeric R and S nanoparticles. Finally, experiments carried out on Gram negative and Gram positive bacteria …
Royal Society of Chemistry
Publication date: 
1 Jan 2019

Ilaria Elena Palamà, Francesca Di Maria, Mattia Zangoli, Stefania D'Amone, Giovanni Manfredi, Jonathan Barsotti, Guglielmo Lanzani, Luca Ortolani, Elisabetta Salatelli, Giuseppe Gigli, Giovanna Barbarella

Biblio References: 
Volume: 9 Issue: 40 Pages: 23036-23044
RSC advances