q期Q黑龙江大学李光明教授、李敬芳副教授团队在ACS Applied Materials & Interfaces上发表了(jin)题(sh)ؓ(f) ?/span>Lanthanide Polyoxometalate Based Water-Jet Film with Reversible Luminescent Switching for Rewritable Security Printing?/span> 的文章（DOIQ?/span>10.1021/acsami.1c13898Q。该团队开?/span>?/span>Gelatin/(EuW10)0.02/GL250薄膜作ؓ(f)可重写纸?/span>?/span>用于荧光安全打印h显著的优ѝ第一Q薄膜的制备单、方ѝ成本低Q薄膜可直接用作可重?/span>U张。第二，直接?/span>水作?/span>墨水Q?/span>水具?/span>?/span>l色?/span>、清z、无毒、方ѝ经?/span>的优?/span>Q?/span>q且兼容普?/span>喷墨打印机。第三，打印的图案在日光?/span>不可见，但在?/span>外光下可以清楚地观察?/span>Q?/span>非常适合安全打印。第四，薄膜h优异的可重写和可擦除?/span>?/span>Q以?qing)良?/span>的再生能?/span>?/span>毒?/span>低。此?/span>Q在紫外光和有机溶剂条g下也表现Z(jin)较高的稳定?/span>?/span>因此Q该薄膜有望取代传统U张实现安全打印?/span>
?/span>1 ZEuW10的薄膜的制备程C意?/span>
?/span>2 (a) Gelatin/(EuW10)0.02/GL250薄膜的拉伸试验；(b) 不同甘a(b)含量?/span>Gelatin/(EuW10)0.02/GL薄膜?/span>力学性能
?/span>3 (a) 不同甘a(b)含量?/span>Gelatin/(EuW10)0.02/GL薄膜的荧光发光?/span>Q?/span>(b) 不同EuW10含量?/span>Gelatin/EuW10/GL250薄膜的荧光发光谱；插图为在紫外光下拍摄的照?/span>
?/span>4 (a) Gelatin/(EuW10)0.02/GL0-350薄膜?/span> (d) Gelatin/(EuW10)0.005-0.04/GL250薄膜l水处理后的荧光发射光谱Q?/span>(b) Gelatin/(EuW10)0.02/GL0-350薄膜?/span>(e) Gelatin/(EuW10)0.005-0.04/GL250薄膜在水处理前后位于618 nm处的荧光强度Q在 (c) Gelatin/(EuW10)0.02/GL0-350薄膜?/span> (f) Gelatin/(EuW10)0.005-0.04/GL250薄膜上打?/span>“HLJU?/span>图案Q照片是在外光下拍摄的
?/span>5 (a) ?/span>水作为墨_(d)?/span>Gelatin/(EuW10)0.02/GL250 薄膜上打印防伪二l码Qƈ在外光下用手机q行识别Q?/span>(b) 在外光下，通过 “Truth?标识从虚假信息中识别出真实信息；(c) 用误导性信息隐瞒真实信息来保护信息Q误导性信?/span> ?88?/span> 在外光下解密ؓ(f)真实信息 ?54?/span>
?/span>6 (a) Gelatin/(EuW10)0.02/GL0-250薄膜的重复打印和擦除q程的实例演C；(b) Gelatin/(EuW10)0.02/GL0-250薄膜q箋10ơ打印和擦除循环q程?/span>618 nm处荧光强度的变化势Q?/span>(c) Gelatin/(EuW10)0.02/GL250薄膜再生q程的流E图?qing)再生后打印能力的展C?/span>
?/span>7机理C意?/span>
相关链接
https://pubs.acs.org/doi/10.1021/acsami.1c13898
