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

Poorna Tharaka Wansapura, Rohan Suranga Dassanayake, Abdul Hamood, Phat Tran, Hanna Moussa, Noureddine Abidi

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Novel chitin–cadmium-tellurium quantum dot (Chitin-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 high-resolution field emission scanning electron microscopy (HR-FESEM) and energy dispersive X-ray (EDX) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and X-ray diffraction analysis (XRD). Antibacterial activity was studied on both Gram-positive (Staphylococcus aureus) and Gram-negative (Pseudomonas aeruginosa) bacteria. Antibacterial properties were investigated 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 for wide range of biomedical applications including wound dressing, burn treatment, drug delivery systems, packaging, ophthalmology, and implants.

Original languageEnglish
Article number44904
JournalJournal of Applied Polymer Science
Volume134
Issue number22
DOIs
StatePublished - Jun 10 2017

Keywords

  • antibacterial activity
  • biopolymers
  • chitin
  • nanoparticles
  • quantum dots

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