The fluorescent resonance energy transfer (FRET) has been paid great attention and utilized for developing fluorescence sensors,which have great sensitivity and simple detection method. In this work, we are interested in fluorescent quenching effect using thelocalized surface plasmon resonance (LSPR) of plasmonic material. Silver nanoprisms (AgNPrs) were used as an acceptor, whereasgold quantum dots (AuQDs) were used as a donor. The distance and the overlapping energy between those materials, which affectedFRET, was investigated. We functionalized the surface of AgNPrs with two different length of dithiol molecules, which were 1, 6-hexanedithiol and 1, 8-octanedithiol. The maximum fluorescent quenching of AuQDs binding with dithiol-functionalized AgNPrsreached to 72 %. The results exhibited great potential for wide application of fluorescence sensor.
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