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Controlling information duration on rewritable luminescent paper based on hybrid antimony (III) chloride/small-molecule absorbates
Science Advances ( IF 13.6 ) Pub Date : 2020-11-25 , DOI: 10.1126/sciadv.abc2181
Zeping Wang 1 , Dingli Xie 1 , Feng Zhang 1 , Jiabing Yu 1 , Xianping Chen 1, 2 , Ching Ping Wong 3
Affiliation  

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.



中文翻译:

控制基于氯化锑(III)/小分子吸收物的可重写发光纸的信息持续时间

控制信息在纸上的持续时间,以使其如愿消失,对于信息安全至关重要。但是,这一领域很少研究。在这里,我们报告了[TEMA] 2 SbCl 51,TEMA + =甲基三乙基铵),[ TEA] 2 SbCl 52,TEA + =四乙基铵),[TEBA] 2 SbCl 53,TEBA + =苄基三乙基铵),和[Ph 4 P] 2 SbCl 54,Ph 4 P +=四苯基phosph)具有结构依赖性的可逆光致发光转换,该转换是由小客体分子(包括H 2 O,甲醇和乙二醇)的吸收和热释放引起的。比较化合物的结构无序水平,键长和发光斯托克斯位移有助于理解其选择性吸收行为。我们的结果表明,通过改变化合物的阳离子,客体分子的类型和激光加热功率,可以很容易地调整涂有标题化合物的可擦写纸上的信息持续时间。我们的研究为信息安全开辟了以前无法确定的途径,并扩展了可擦写纸的潜在应用。

更新日期:2020-11-25
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