Controlling information duration on rewritable luminescent paper based on hybrid antimony (III) chloride/small-molecule absorbates

Abstract

Controlling the duration that information lasts on paper so that it disappears as desired is crucial for information security. However, this area is rarely studied. Here, we report [TEMA]2SbCl5 (1, TEMA+ = methyltriethylammonium), [TEA]2SbCl5 (2, TEA+ = tetraethylammonium), [TEBA]2SbCl5 (3, TEBA+ = benzyltriethylammonium), and [Ph4P]2SbCl5 (4, Ph4P+ = tetraphenylphosphonium) with structure-dependent reversible photoluminescent switching induced by the absorption and thermal release of small guest molecules including H2O, methanol, and ethylene glycol. Comparing the structural disorder levels, bond lengths, and luminescent Stokes shifts of the compounds aided in understanding their selective absorption behavior. Our results indicated that the information duration on the rewritable paper coated with the title compounds is easily tuned by changing the cation of the compounds, the type of guest molecules, and laser heating power. Our study opens previously unidentified avenues for information security and extends the potential applications of rewritable paper.

Modulating photoelectron localization degree to achieve controllable photoluminescence quenching and activation of 0D hybrid antimony perovskites

“…3b). 42–44 To reveal the photophysical process, time-resolved PL spectrum monitoring at 610 nm was performed and fitted by a biexponential function giving an average lifetime of 5.078 μs and 5.978 μs at 300 K and 80 K, respectively (Fig. 3c).…”

Organic−Inorganic Manganese Bromide Hybrids with Water‐Triggered Luminescence for Rewritable Paper

“…[5] Moreover, they have also reported rewritable papers based on [TEA] 2 SbCl 5 (TEA, tetraethylammonium), and [Ph 4 P] 2 SbCl 5 (Ph 4 P, tetraphenylphosphonium), etc., and their duration time of printed information can be tuned by changing the type of cations, guest molecules, and laser heating power. [6] However, although considerable cases have been reported, [7] the underlying structural transition mechanism for PL quenching induced by small molecules is rarely investigated in these materials, which limits their expanding applications in rewritable paper.…”

“…Manganese(II) has long been used as excellent photoluminescent centers due to the spin-forbidden d-d transition from 4 T 1 excited state to 6 A 1 ground state, in which the absorption and emission behaviors can be modulated by its coordination environment. [8] Generally, tetrahedrally and octahedrally coordinated Mn 2+ correspondingly present green and red emissions, respectively.…”

White-light defect emission and enhanced photoluminescence efficiency in a 0D indium-based metal halide

“…4–8 In particular, low-dimensional organic–inorganic metal halides have been considered as efficient emitters due to the merits of structural and compositional tunability, extraordinary optical properties and facile synthesis by wet and solid-state methods, 9–17 which are potentially used in display technologies, solid-state lighting, scintillators, remote thermography and anti-counterfeiting labeling. 18–25 Notwithstanding the rapid advance in materials’ diversity and photoluminescence (PL) efficiency, their fundamental photophysical mechanisms are still elusive, which needs to be clarified not only from a basic science point of view, but for the purpose of designing novel materials with exceptional PL properties for practical applications.…”