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Issue 27, 2017
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Fabrication of egg shell-like nanovesicles from a thiocoumarin-based ε-amino ester: a potential carrier

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Abstract

Nanoscale egg shell-like drug delivery systems from methyl 6-amino-2-oxo-2H-thiochromene-3-carboxylate, a thiocoumarin-based ε-amino ester, have been investigated as potential candidates for drug delivery vehicles. X-ray crystallography reveals that the ε-amino ester adopts a planar structure and self-associates to form a four-membered ring-like porous architecture through multiple N–H⋯O and C–H⋯S intermolecular hydrogen bonding interactions. At higher order packing, the ε-amino ester forms an anti parallel sheet-like structure by intermolecular hydrogen bonding as well as face-to-face π–π stacking interactions. Field emission scanning electron microscopy (FE-SEM) revealed that the ε-amino ester exhibits an egg shell-like porous nanovesicle morphology. These egg shell-like nanovesicles have been used as a potential carrier for the bacteriostatic antibiotic sulfamethoxazole. The spectroscopic studies as well as the growth inhibition of E. coli exhibit that the ε-amino ester-sulfamethoxazole formulation leads to pH responsive sustained release of the drug. This report highlights the utility of designer amino acid-drug supramolecular combinations.

Graphical abstract: Fabrication of egg shell-like nanovesicles from a thiocoumarin-based ε-amino ester: a potential carrier

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Publication details

The article was received on 03 Jan 2017, accepted on 19 Jun 2017 and first published on 20 Jun 2017


Article type: Paper
DOI: 10.1039/C7TB00025A
Citation: J. Mater. Chem. B, 2017,5, 5450-5457
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    Fabrication of egg shell-like nanovesicles from a thiocoumarin-based ε-amino ester: a potential carrier

    M. Debnath, S. Sasmal and D. Haldar, J. Mater. Chem. B, 2017, 5, 5450
    DOI: 10.1039/C7TB00025A

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