A New Simple Chromo-fluorogenic Probe for NO2 Detection in Air

摘要

A new chromo-fluorogenic probe, consisting of a biphenyl derivative containing both a silylbenzyl ether and a N,N-dimethylamino group, for NO2 detection in the gas phase has been developed. A clear colour change from colourless to yellow together with an emission quenching was observed when the probe reacted with NO2. A limit of detection to the naked eye of about 0.1ppm was determined and the system was successfully applied to the detection of NO2 in realistic atmospheric conditions.