Tunable Dual-Mode MOF-Based Composite Fluorescent Materials: Stimuli-Responsive and Anti-counterfeiting Application

• DOI: 10.1021/acs.cgd.0c01465
• Publication Date: 2021-02-18T21:14:26Z
• Authors: Xinglei He; Huijun Li; Jiwei Wang; Yanli Li; Meijie Su; Zhouqing Xu
• Keywords: Dual mode

With the incessant improvement of requirements for optical anti-counterfeiting technology, it is essential to develop multifunctional luminescent materials with multiple models and adjustable luminescence. In this article, we reported three new UCNPs@HPU-19b@Ln3+ (UCNP = up-conversion nanosphere; HPU Henan Polytechnic University; UCNPs Y2O3: Er3+, Yb3+@SiO2 nanospheres; HPU-19 [Cd4(L)2(H2O)3]n, H4L 5,5′-oxydiisophthalic acid) composite materials, which could exhibit red, green, or yellow emission under 254 nm excitation red 980 excitation. Simultaneously, kinds fluorescent all have sensitive reversible sensing HCl gas, can realize cycles without destroying structure. The solutions as inks were utilized write draw some signals pictures on papers. On one hand, get specific stored information different excitations. other when treated acid/base vapor, not only hidden be read but also reading repeatedly realized. Therefore, dual-mode luminescence endow them application high coding ability security.