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    Antibacterial and Antibiofouling Properties of Light Triggered Fluorescent Hydrophobic Carbon Quantum Dots Langmuir-Blodgett Thin Films

    Year: 2018

    Journal: ACS Sustain. Chem. Eng., Volume 6, MAR, page 4154–4163

    Authors: Stankovic, Nenad K.; Bodik, Michal; Siffalovic, Peter; Kotlar, Mario; Micusik, Matej; Spitalsky, Zdenko; Danko, Martin; Milivojevic, Dusan D.; Kleinova, Angela; Kulbat, Pavel; Capakova, Zdenka; Humpolicek, Petr; Lehocky, Marian; Markovic, Biljana M. Todorovic; Markovic, Zoran M.

    Organizations: SASPRO Programme Project [1237/02/02-b]; People Programme (Marie Curie Actions) European Union's Seventh Framework Programme under REA Grant [609427]; Slovak Academy of Sciences; Ministry of Education, Science and Technological Development of the Republic of Serbia [172003]; bilateral project Serbia-Slovakia [SK-SRB-2016-0038]; multilateral scientific and technological cooperation in the Danube region [DS021]; VEGA [2/0093/16]; Czech Science Foundation [17-05095S]; [APVV-15-0641]

    Keywords: Hydrophobic carbon quantum dots; Langmuir-Blodgett thin films; Photodynamic therapy; Singlet oxygen

    Inimitable properties of carbon quantum dots as well as a cheap production contribute to their possible application in biomedicine especially as antibacterial and antibiofouling coatings. Fluorescent hydrophobic carbon quantum dots are synthesized by bottom-up condensation method and used for deposition of uniform and homogeneous Langmuir-Blodgett thin films on different substrates. It is found that this kind of quantum dots generates singlet oxygen under blue light irradiation. Antibacterial and antibiofouling testing on four different bacteria strains (Escherichia coli, Staphylococcus aureus, Bacillus cereus, and Pseudomonas aeruginosa) reveals enhanced antibacterial and antibiofouling activity of hydrophobic carbon dots thin films under blue light irradiation. Moreover, hydrophobic quantum dots show noncytotoxic effect on mouse fibroblast cell line. These properties enable potential usage of hydrophobic carbon quantum dots thin films as excellent antibacterial and antibiofouling coatings for different biomedical applications.
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