Abstract
A method for targeted variation of the radiation properties of quantum dots (QDs) to control the efficiency of resonance energy transfer in nanocrystal assemblies and nano-bio hybrid materials has been developed. The method is based on strong ultraviolet (UV) laser irradiation of QDs and allows the extinction and luminescence spectra to be controlled and the luminescence quantum yield and decay kinetics to be varied. Water-soluble QDs have been synthesized and used for analyzing the effect of energy transfer from semiconductor nanocrystals on the photocycle of the photosensitive protein bacteriorhodopsin (bR) in bR–QD complexes. The UV irradiation mode has been selected in a way permitting the modulation of QD optical parameters without modification of their structure or physico-chemical properties. It is concluded that the QD interaction with bR accelerates its photocycle, but this acceleration is determined by electrostatic interactions, rather than Förster resonance energy transfer from QDs to bR. The method of UV laser irradiation of fluorescent semiconductor QDs has proven to be an efficient technique for variation of nanocrystal optical properties without affecting their structure, as well as for fine modulation of the energy transfer processes in the nanocrystal assemblies and nano-bio hybrid materials.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
