Fluorescence Enhancement Method for Aptamer-Templated Silver Nanoclusters and Its Application in the Construction of a β-Amyloid Oligomer Sensor

-templated AgNCs, an "on-off" fluorescence sensor was constructed for the sensitive and selective detection of AβO. This work provides a rational strategy to realize fluorescence enhancement for the aptamer-templated AgNCs and design an aptamer-based fluorescence sensor.