Efficacy of synthesized azo dye for development of latent fingerprints on Non-porous and wet surfaces

Interpol review of fingermarks and other body impressions (2019 – 2022)

“…Preliminary/Pilot studies – Several compounds were presented as new dusting powders: AIE-active composites or molecules [ [277] , [278] , [279] , [280] , [281] ], algal biomass [ 282 ], anti-perovskite phosphors [ 283 ], azo-dyes [ 284 ], β-cyclodextrin-berberine complexes [ 285 ], benzazole derivatives [ 286 ], bisamide analogues [ 287 ], cadmium-doped silica microspheres [ 288 ], chitosan-tripolyphosphate-lysine conjugates [ 289 ], coumarin–pyridone conjugates [ 290 ], crushed eggshells and clamshells [ 291 ], crushed gambir [ 292 ], curcumin analogues [ 293 ], doped montmorillonite [ 278 , 294 , 295 ], doped starch microspheres [ [296] , [297] , [298] ], europium-dextrose composites [ 299 ], iron oxide/zinc sulphide hybrid [ 300 ], metal-organic frameworks [ 301 ], organic NIR emitters [ 302 , 303 ], perylenetetracarboxylate compounds [ 304 ], phenylthiazoles [ 305 ], phosphor-cellulose hybrids [ 306 ], pyrazoles [ 307 ], pyrene-tagged imidazolium salts [ 308 ], pyridine and pyrimidine derivatives [ 309 , 310 ], rare-earth-doped phosphors [ [311] , [312] , [313] , [314] , [315] , [316] , [317] , [318] , [319] ], reduced graphene oxides [ 320 ], resveratrol powder [ 321 ], rhodamine B-doped diatomaceous earth [ 322 ], Schiff base complexes [ [323] , [324] , [325] ], talcum powder […”

Dansyl fluorophore functionalized hierarchically structured mesoporous silica nanoparticles as novel latent fingerprint development agents

“…47 Our materials fabrication strategy also recognizes the common requirement of fluorescent small organic molecules (typified by dansyl derivatives) to be incorporated into another matrix to address their low biocompatibility, low water solubility, and toxicity. 5,20,48…”

“…47 Our materials fabrication strategy also recognizes the common requirement of uorescent small organic molecules (typied by dansyl derivatives) to be incorporated into another matrix to address their low biocompatibility, low water solubility, and toxicity. 5,20,48 In previous work on the visualization of latent ngermarks, 45 we have made use of the dansylglycine uorophore, delivered via the vehicle of electrospun uorescent polycaprolactone (PCL)/dansylglycine nanobers. The present work delivering the same uorophore, but via MCM-41@chitosan@dansylglycine nanoparticles, offers two signicant practical advantages.…”

Recent Trends in Fluorescent Organic Materials for Latent Fingerprint Imaging

“…Among them, colored or fluorescent powders are usually applied after cyanoacrylate fuming, and most of fluorescent powders are fluorescent organic small molecules, widely used on different surfaces under light irradiation for the high contrast with the surface background. Although organic small molecules are successfully used for LFPs imaging, fluorescent organic small molecules need to be applied with other matrix to improve their low biocompatibility, low water solubility, and toxicity to get better performance of LFP fluorescent imaging, making this process more convenient (Sodhi and Kaur, 2000 ; Chen et al, 2009 ; Yuan et al, 2018 ; Bhagat et al, 2020 ). The research of fluorescent materials also has emerged, showing them to be new agents for developing LFPs, due to their unique optical and chemical properties with higher fluorescent intensity, better fluorescence stability, and higher contrast.…”