Abstract
In this paper, benzimidazole fluorescent compounds (compound 1 and compound 2) containing hydroxymethyl and carboxyl substituents were synthesized by replacing salicylaldehyde and substituted ortho- phenylenediamine.By measuring the spectral properties of these fluorescent compounds, the influence of different substituents on the fluorescence properties of these fluorescent compounds was investigated and the fluorescence effect of these fluorescent compounds as a fluorescent latent agent for sweat fingerprinting was also investigated.The obtained hydroxymethyl and carboxyl substituted benzimidazole sweat latent fingerprints have good adsorption performance, remarkable fluorescence effect and strong stability, therefore, they can be widely used.This research also expands the research and application range of benzimidazole derivatives and it has very important research value in the field of criminal detection technology.
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