The Influence of Photoinduced Processes on a Quantum Dot Surface on the Electron Transfer Efficiency in TiO2 Nanoparticle/Quantum Dot Structures

Kolesova, Ekaterina; Safin, Farrukh; Маслов, В. Г.; Gun’ko, Yu. K.; Орлова, А. О.

doi:10.1134/s0030400x19090157

Cited by 3 publications

(1 citation statement)

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“…It is possible to estimate the electron transfer efficiency based on the assumption that it is the only channel where PL quenching is observed. The estimates were conducted on the basis of QD PL kinetics according to method that we developed in an earlier study [52]. Our calculations showed that the formation of hybrid structures is accompanied QD luminescence of up to 80% (see Section S8, Figure S13 and Table S2 in the Supplementary Materials for details).…”

Section: Photophysical Properties Of Multilayered Titania Np/cdse Qd Hybrid Structuresmentioning

confidence: 99%

Bactericidal Activity of Multilayered Hybrid Structures Comprising Titania Nanoparticles and CdSe Quantum Dots under Visible Light

et al. 2021

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Titania nanoparticle/CdSe quantum dot hybrid structures are a promising bactericidal coating that exhibits a pronounced effect against light-sensitive bacteria. Here, we report the results of a comprehensive study of the photophysical properties and bactericidal functionality of these hybrid structures on various bacterial strains. We found that our structures provide the efficient generation of superoxide anions under the action of visible light due to electron transfer from QDs to titania nanoparticles with ~60% efficiency. We also tested the antibacterial activity of hybrid structures on five strains of bacteria. The formed structures combined with visible light irradiation effectively inhibit the growth of Escherichia coli, Bacillus subtilis, and Mycobacterium smegmatis bacteria, the last of which is a photosensitive causative agent model of tuberculosis.

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Section: Photophysical Properties Of Multilayered Titania Np/cdse Qd Hybrid Structuresmentioning

confidence: 99%