Benzotriazole benzaldehyde condensate ursol bis-Schiff base and preparation method thereof

A fluorescence probe and application thereof in zinc ion detection relate to a kind of fluorescence probe of which fluorescence is enhanced with the presence of zinc ions. The invention provides benzotriazole benzaldehyde condensate ursol bis-Schiff base which can be used for selectively detecting the zinc ions and a preparation method thereof. The preparation method comprises the steps of firstly, taking benzotriazole and derivatives thereof as well as p-fluorobenzaldehyde as raw materials to prepare benzotriazolyl benzaldehyde or benzotriazole derivative benzaldehyde, and then using a condensation reaction of the prepared benzotriazolyl benzaldehyde or benzotriazole derivative benzaldehyde with ursol through aldehyde group and primary amine to obtain a series of bis-Schiff base with a larger conjugate pai structure. The process is relatively low in synthesizing cost, high in yield, simple in product purification, and easy in reaction condition control. The zinc ion fluorescence probe has the characteristics of good selectivity, high metal ion interference resistance and the like, is a simple, fast and sensitive zinc ion specific detection agent, and can be applied to the field of materials or sensors.