Takashi Murashima, Koji Kawamura and Ai Matsumoto
We reveal a fluorescence enhancement mechanism of an aggregation-induced emission (AIE)-DNA probe for target DNA detection. The enhancement is caused by the restriction of intramolecular rotation (RIR) effect that arises from steric hindrance between the AIE dye moiety in a hybridized probe and the dangling end (free-ssDNA) or peripheral dsDNA. Thus, these AIE-DNA probes can selectively detect two or more DNA repeat sequences, such as telomeric repeats.
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