Tunable-emission and AIPE-active heteroleptic Ir(iii) complexes for fingermark detection via a spraying technique

Abstract

Latent fingermark detection has been a high profile issue in the field of identity authentication.

Interpol review of fingermarks and other body impressions 2016–2019

“… Preliminary/Pilot studies : Several kinds of NPs in solution were proposed to detect fingermarks on various substrates (e.g., non-porous, semi-porous, adhesive side of tapes): C-dots ➭ FITC-functionalized [ 391 ], green-emitting [ 392 ], white-emitting [ 393 ], orange-emitting [ 394 ], nitrogen- and sulfur-doped [ 321 ], suspended in poly (vinyl alcohol) [ 395 ], sprayed in hydrochloride solution [ 396 ]; gold NPs ➭ functionalized with lysozyme-targeting aptamers [ 397 ], functionalized with antibodies (i.e., anti-lysozyme, anti-human IgG and anti-cotinine) to serve as tags for SERS chemical imaging [ 398 ]; nanophosphors ➭ NIR-emitting lanthanide-based [ 399 ], EDC/NHS-functionalized [ 400 ]; nanorods ➭ carboxyl-functionalized [ 401 ], antibody-functionalized [ 402 ]; QDs ➭ functionalized cadmium-based [ 403 ]; silica NPs ➭ methylene blue-doped [ 283 ], carbon-doped [ 326 ], FITC-doped silica NPs [ 404 ], fluorophores-doped [ 286 ], Nile red-doped [ 405 ]; silver NPs ➭ in-situ generated [ 406 ]; other NPs ➭ NIR-emitting polymer dots doped with NIN [ 407 ], AIE-based nanomaterials built on diphenylpyrimidinone and salicylideneamine [ 408 ], poly [p-phenylenevinylene] [ 409 ], functionalized carbon nanotubes [ 410 ]; Co 2 TiO 4 NPs [ 310 ], rare-earth-doped upconversion NPs [ 411 ], AIE-based heteroleptic iridium complexes [ 412 , 413 ], coronenediimide nanostructures [ 337 ], and antibody-functionalized polystyrene NPs applied to drug-spiked fingermarks [ 414 ]. It should be emphasized that several of these studies were conducted with an extremely low number of donors leaving fresh, sebum-rich fingermarks, or were carried out by dropping few microliters of solution directly on the fingermarks.…”

Advances in the Application of Organic Materials for the Development of Latent Fingerprints

“…这也表明, 探针 22 具有潜在运用于案件现场潜指纹显现的可能. 图 1 (A)基于 AIE 分子 18 显现潜指纹的原理图和(B) 18 显现不同客体上潜指纹的荧光成像图 [23] 随后, 该课题组 [63]…”

“…显现 [63] [66] 报道了一例聚 集增强发光(aggregation-enhanced emission, AEE)的荧光 探针 37, 并协同"502"胶熏显技术用于潜指纹的显现. 探针 37 以芴(π 共轭)为荧光母核, 用 1,8-萘酰亚胺(吸电 子基团)和蒽(供电子基团)对荧光母体进行结构修饰, 形 成 "推-拉" 电子结构.…”

Hybrid nanospheres of silica covalently containing yellow-emitting cationic iridium(iii) complex: preparation and application in white light-emitting diodes

“…As a category of very important phosphorescent materials, cationic iridium( iii ) complexes have been widely used in many fields, such as organic light-emitting diodes (OLEDs), 1 light-emitting electrochemical cells (LECs), 1 a ,2 chemiluminescent detection, 3 latent fingerprint detection, 4 bioimaging, 5 and photodynamic therapy, 5 b ,6 mainly due to their excellent optical, chemical, and biological advantages including high efficiency (100% theoretical quantum yield), rich and tunable light-emission colour, high stability, low toxicity, ease of design, synthesis, and purification. 1–6 Besides these significant, attractive and promising applications, cationic iridium( iii ) complexes are also used as down-conversion luminescent materials ( i.e. phosphors) in light-emitting diodes (LEDs).…”