To further advance the development of the fluorescent dyes for latent fingerprint imaging,two triphenylamine-based Schiff base compounds containing a benzimidazole group(TPA-BZI)and a phenyl unit(TPA-Ph)were designed ...To further advance the development of the fluorescent dyes for latent fingerprint imaging,two triphenylamine-based Schiff base compounds containing a benzimidazole group(TPA-BZI)and a phenyl unit(TPA-Ph)were designed and synthesized.Photoluminescence experiments revealed that both compounds exhibited solvatochromism and intramolecular charge transfer(ICT)characteristics in six organic solvents.Additionally,they showed aggregation-induced emission(AIE)in CH_(3)OH/water mixtures and solid-state fluorescence.These phenomena were further elucidated through time-dependent density functional theory(TD-DFT)calculations.It was also found that the two compounds could be used for latent fingerprints imaging,and could easily distinguish the details of fingerprints from Ⅰ to Ⅲ levels,which could provide the preliminary evidence to match personal identification.展开更多
Nine novel fluorescent dyes of Benzoxanthene-3,4-dicarboxylic anhydride were synthesized through bromination,condensation,reduction,cyclization and imidation with 1,8-naphthalic anhydride as raw material.Their fluores...Nine novel fluorescent dyes of Benzoxanthene-3,4-dicarboxylic anhydride were synthesized through bromination,condensation,reduction,cyclization and imidation with 1,8-naphthalic anhydride as raw material.Their fluorescent and dyeing properties were studied.They can be used to color polyester fiber in fluorescent greenish-yellow hues of great brilliance with fastness to light:6～7．展开更多
文摘To further advance the development of the fluorescent dyes for latent fingerprint imaging,two triphenylamine-based Schiff base compounds containing a benzimidazole group(TPA-BZI)and a phenyl unit(TPA-Ph)were designed and synthesized.Photoluminescence experiments revealed that both compounds exhibited solvatochromism and intramolecular charge transfer(ICT)characteristics in six organic solvents.Additionally,they showed aggregation-induced emission(AIE)in CH_(3)OH/water mixtures and solid-state fluorescence.These phenomena were further elucidated through time-dependent density functional theory(TD-DFT)calculations.It was also found that the two compounds could be used for latent fingerprints imaging,and could easily distinguish the details of fingerprints from Ⅰ to Ⅲ levels,which could provide the preliminary evidence to match personal identification.
文摘Nine novel fluorescent dyes of Benzoxanthene-3,4-dicarboxylic anhydride were synthesized through bromination,condensation,reduction,cyclization and imidation with 1,8-naphthalic anhydride as raw material.Their fluorescent and dyeing properties were studied.They can be used to color polyester fiber in fluorescent greenish-yellow hues of great brilliance with fastness to light:6～7．
