Carbon Quantum Dots Modified Polyurethane Nanocomposite as Effective Photocatalytic and Antibacterial Agents
Authorized Users Only
Marković, Zoran M.
Article (Published version)
© 2018 American Chemical Society
MetadataShow full item record
Development of new types of antibacterial coatings or nanocomposites is of great importance due to widespread multidrug-resistant infections including bacterial infections. Herein, we investigated biocompatibility as well as structural, photocatalytic, and antibacterial properties of photoactive hydrophobic carbon quantum dots/polyurethane nanocomposite. The swell-encapsulation-shrink method was applied for production of these nanocomposites. Hydrophobic carbon quantum dots/polyurethane nanocomposites were found to be highly effective generator of singlet oxygen upon irradiation by low-power blue light. Analysis of conducted antibacterial tests on Staphyloccocus aureus and Escherichia coli showed 5-log bactericidal effect of these nanocomposites within 60 min of irradiation. Very powerful degradation of dye (rose bengal) was observed within 180 min of blue light irradiation of the nanocomposites. Biocompatibility studies revealed that nanocomposites were not cytotoxic against mouse emb...ryonic fibroblast cell line, whereas they showed moderate cytotoxicity toward adenocarcinomic human epithelial cell line. Minor hemolytic effect of these nanocomposites toward red blood cells was revealed.
Keywords:hydrophobic carbon quantum dots / polyurethane / reactive oxygen species production / photocatalytic activity / antibacterial activity / visible light sterilization / hydrophobic carbon quantum dots / polyurethane / reactive oxygen species production / photocatalytic activity / antibacterial activity / visible light sterilization
Source:ACS Biomaterials Science & Engineering, 2018, 4, 12, 3983-3993
- SASPRO Programme (No. 1237/02/02-b)
- People Programme (Marie Curie Actions) European Union's Seventh Framework Programme under REA (No. 609427)
- VEGA (2/0093/16)
- Czech Science Foundation (17-05095S)
- Thin films of single wall carbon nanotubes and graphene for electronic application (RS-172003)
- Bilateral project Serbia-Slovakia (SK-SRB-2016-0038)
- Multilateral scientific and technological cooperation in the Danube region (DS-2016-021)