期刊
LANGMUIR
卷 28, 期 44, 页码 15433-15437出版社
AMER CHEMICAL SOC
DOI: 10.1021/la3032013
关键词
-
资金
- Basic Science Research Program (CRI) [RIAMIAM0209(0417-20090011)]
- WCU (World Class University) project through the National Research Foundation of Korea
- Ministry of Education, Science and Technology
In this study, we have demonstrated the reconstruction of encrypted information by employing photoluminescence spectra and lifetimes of a phosphorescent Ir(III) complex (IrHBT). IrHBT was constructed on the basis of a heteroleptic structure comprising a fluorescent N boolean AND O ancillary ligand. From the viewpoint of information security, the transformation of the Ir(III) complex between phosphorescent and fluorescent states can be encoded with chemical/photoirradiation methods. Thin polymer films (poly(methylmethacrylate), PMMA) doped with IrHBT display long-lived emission typical of phosphorescence (lambda(max) = 586 nm, tau(obs) = 2.90 mu s). Meanwhile, exposure to HCl vapor switches the emission to fluorescence (lambda(max) = 514 nm, tau(obs) = 1.53 ns) with drastic changes in both the photoluminescence color and lifetime. Security printing on paper impregnated with IrHBT or on a PMMA film containing IrHBT and photoacid generator (triphenylsulfonium triflate) enables the bimodal readout of photoluminescence color and lifetime.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据