Abstract
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Highlights
Bacteriorhodopsin (BR) is a unique light-sensitive protein known for its ability to produce a pronounced electrochemical response to irradiation
During such experiments we have found that laser irradiation of quantum dots (QDs) leads to an increase in luminescence intensity, while absorption spectra remained unchanged, what indicates a change in fluorescence quantum yield (QY) of QD
[14] and the Förster resonance energy transfer (FRET) efficiency obtained from current experiment, we estimated the distance between the donor and the acceptor, which was about 8,4 nm
Summary
Bacteriorhodopsin (BR) is a unique light-sensitive protein known for its ability to produce a pronounced electrochemical response to irradiation. The changes in the protein’s absorption profile during photochemical transformations allow one to create optical logic gates based on BR. Owing to these properties, BR is a promising material for applications in optoelectronics [1]. Semiconductor quantum dots (QDs) is fluorescent nanocrystals promising in the field of photovoltaics, optoelectronics and biosensing [2], which have high one-photon and two-photon absorption cross-sections in a UV- and NIR spectral regions, respectively, can significantly improve the light sensitivity of BR by means of Förster resonance energy transfer (FRET) from QD to BR [3,4,5,6,7,8,9,10,11]. The study of the effect of high-intensity laser irradiation on the FRET process inside the QD-BR nano-bio hybrid material is an important task that allows one to select the operation conditions for this material
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