A proton-assisted AIE active luminescent material having tunable emission in solution and solid state for anti-counterfeiting application: smart high contrast on–off–on fluorescence switch

Abstract

The development of stimuli-responsive organo-luminogens having high solid-state emission, especially in the near-infrared (NIR) region is still demandable. Here, a newly designed and characterised aggregation-induced emission (AIE)-active luminophore, (4-hydrazonomethylphenyl)diphenylamine (DPABHz)...

Comprehensive advances in the synthesis, fluorescence mechanism and multifunctional applications of red-emitting carbon nanomaterials

“…The most preferable high-security level anticounterfeiting technology is obtained by embedding uorescence materials with tunable and controlled emissions under various stimuli into a security system. [493][494][495][496] FCNMs are booming these days as an anticounterfeiting material because of their great uorescence properties, tunable emission, easy of functionalization, high stability, biocompatibility, eco-friendliness and cost-effective synthesis methods. The FCNMs have great advantages compared to semiconductor metal nanomaterials, rare-earth doped nanomaterials, inorganic perovskite nanomaterials and polymer nanomaterials due to their inherent characteristics.…”

Aggregation-induced emission of cyclometalated rhodium(iii) and iridium(iii) phenylpyridine complexes with ancillary 1,3-diketones

“…[37][38][39] Since the first report on cyclometalated iridium(III) complexes exhibiting aggregation-induced emission (AIE), 40 numerous Ir(III) complexes have been shown to be AIE-active, and a wide range of potential applications has been proposed for such complexes [41][42][43][44][45][46][47][48][49][50] and other materials. [51][52][53][54][55][56] Surprisingly, there have been no reports on Rh(III) compounds displaying enhanced emission in the solid state or aggregates.…”

Tuneable emission in single molecule dyads mediated by a charge transfer state

“…9 Recently a new AIE system was developed wherein a triphenylamine derivative exhibits tunable emission switching from solution to solid state. 10 Other previous work has utilised tuneable emission for white light generation for OLEDs. 3 For this, a conjugate molecule containing derivatives of red-emitting rhodamine, green-emitting fluorescein and blue-emitting tetraphenylethylene ( 1 ) (Fig.…”