New design of highly sensitive AIE based fluorescent imidazole derivatives: Probing of sweat pores and anti-counterfeiting applications

Interpol review of fingermarks and other body impressions 2016–2019

“…All the articles below refer to the application of micron-sized particles. Preliminary/Pilot studies : Several kinds of compounds were proposed to detect fingermarks on non-porous substrates through powder dusting: ABC dry fire extinguisher powder [ 354 ], Fuller’s earth [ 355 ], anthracene and naphthalene [ 356 ], BaTiO 3 :Dy 3+ microspheres [ 357 ], chitosan-tripolyphosphate microparticles [ 358 ], La 2 (MoO 4 ) 3 :Eu 3+ microcrystals [ 359 ], phenyl-doped graphitic carbon nitride [ 360 ], bis(salicylidene)cyclohexyl-1,2-diamino zinc(II) complex [ 361 ], functionalized montmorillonite [ 362 , 363 ], carbon dot@TiO 2 core-shell composite [ 288 ], household powders such as gram flour, coriander, cumin or black pepper [ 364 ], Ca 4 (PO 4 ) 2 O:Eu 2+ phosphors [ 365 ], Eu(Phen) 2 complex intercalated clay hybrids [ 366 ], AIE-based magnetic powder doped with tetraphenylethene derivatives [ 367 ], pyrene [ 368 ], silica microparticles coated with phenanthro imidazole derivative [ 369 ], europium (III) coordination polymer [ 370 ], Yb 3+ /Er 3+ co-doped ceramics presenting upconversion properties [ 371 ], cationic dye – diatomite composite [ 372 ], benzazole-doped silica microparticles [ 373 ], Yb 3+ /Er 3+ /Tm 3+ doped fluorides presenting upconversion properties [ 374 ], porous graphitic carbon nitride [ 375 ], YBO 3 :Eu 3+ /Tb 3+ phosphors [ 376 ], Mg 2 TiO 4 :Mn 4+ phosphor [ 377 ], carbazolyl-based phosphor [ 378 ], and AIE-based imidazole derivatives [ 379 ]. It should be emphasized that several of these studies are conducted with an extremely low number of donors leaving fresh, sebum-rich fingermarks.…”

Synthesis and Photophysical Properties of Multi‐Functional Bisimidazolyl Phenol Zinc (II) Complex: Application in OLED, Anti‐Counterfeiting and Latent Finger Print Detection

“…[19][20][21] Recently, LFP and anti-counterfeiting applications based on the AIE properties of the trifluoromethyl-phenyl anchored imidazole have been reported from our laboratory. [22] This reported imidazole derivative was capable of exhibiting cyan-blue luminescence in solid-state and could detect LFPs on various porous/semi-porous/non-porous surfaces under UV 365 nm. Inspired by these results, we attempted to assess the ability of the imidazole-derived -zinc metal complex as a probe for the OLED and LFP applications.…”

“…Considering enhanced emission at aggregation (AIE) [18] and apparent luminescent behavior, these imidazole‐metal complexes are considered in applications like OLEDs, LFPs, and fluorescent biosensing [19–21] . Recently, LFP and anti‐counterfeiting applications based on the AIE properties of the trifluoromethyl‐phenyl anchored imidazole have been reported from our laboratory [22] . This reported imidazole derivative was capable of exhibiting cyan‐blue luminescence in solid‐state and could detect LFPs on various porous/semi‐porous/non‐porous surfaces under UV 365 nm.…”

Recent Trends in Fluorescent Organic Materials for Latent Fingerprint Imaging

“…Acridinediones (ADDPh and ADDSi) with AIE feature were reported to develop LFPs down to the second-level details on different non-porous substrates by a portable wet method in the THF/water mixture for a 2-min enhancement (Suresh et al, 2018 ). A novel imidazole derivative (IMD FTs) was designed to imaging LFPs with the third-level details (sweat pores) on various porous/semi-porous/non-porous surfaces under a 365-nm UV light (Ravindra et al, 2019 ). The Schiff base derivative of the vitamin B 6 cofactor pyridoxal (L) was applied for LFP imaging in the DMSO/H 2 O mixture over a non-porous glass slide (Bhardwaj et al, 2020 ).…”