Novel chitin–cadmium-tellurium quantum dot (Chitin-CdTeQD) and cellulose-CdTeQD hybrid films combining chitin and CdTe quantum dots (CdTeQDs) were prepared via a facile aqueous synthesis route at room temperature. Films were characterized by field emission scanning electron microscopy and energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy and thermogravimetric analysis. Antibacterial activity was studied on both gram positive (Staphylococcus aureus) and gram negative (Pseudomonas aeruginosa) bacteria. Antibacterial properties were tested with agar diffusion testing assay and with confocal laser scanning microscopic image analysis. Chitin–CdTeQD films exhibited an excellent antibacterial activity against both gram-positive and gram-negative bacteria. Chitin–CdTeQD films might be a desirable antibacterial material that could have potential in biomedical applications such as in wound dressing, burn treatment, drug delivery systems, ophthalmology and implants.

Preparation of cellulose and chitin-CdTe quantum dots films and antibacterial effect on Staphylococcus aureus and Pseudomonas aeruginosa

253rd National Meeting (2017)

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