Critical Shell Thickness of Core/shell Upconversion Luminescence Nanoplatforms for FRET Applications
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چکیده
The influence of the structure of upconversion nanoparticles on their fluorescence resonant energy transfer applications has been studied using core/shell upconversion NaYF4:Yb,Er@NaYF4 nanoparticles and rose bengal photosensitizer. From studies of the photophysics of and singlet oxygen generation by the conjugates of upconversion nanoparticles with photosensitizers we have determined what the optimal shell thickness is for the performance of the FRET conjugates. It has been found that the optimal shell thickness is a trade-off between the opposing optimal conditions for upconversion and FRET efficiency.
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تاریخ انتشار 2018