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A surface plasmon enhanced FLIM-FRET imaging approach based on Au nanoparticles

Zhang, Yinan and Chen, Yu and Yu, Jun and Birch, David JS (2017) A surface plasmon enhanced FLIM-FRET imaging approach based on Au nanoparticles. Medical Devices and Diagnostic Engineering, 2 (1). pp. 78-82. ISSN 2399-6854

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In this report we have demonstrated a fluorescence resonant energy transfer (FRET)-fluorescence lifetime imaging microscopy (FLIM) combined approach to study the intracellular pathway of gold nanoparticles. The detected energy transfer between gold nanorods (GNRs) and green fluorescence protein (GFP) labeled Hela cell earlyendosomes and the in-depth lifetime distribution analysis on the transfer process suggest an endocytotic uptake process of GNRs. Furthermore, the FRET-FLIM method profits from a surface plasmon enhanced energy transfer mechanism when taking into consideration of GNRs and two photon excitation, and is effective in biological imaging, sensing, and even in single molecular tracing in both in vivo and in vitro studies.