Lanthanide “Chameleon” Multistage Anti‐Counterfeit Materials

Hybrid materials displaying multistage security behavior, where a single material shows both wavelength‐ and temperature‐dependent luminescence properties, are reported. The materials consist of mixed‐lanthanide β‐diketonate complexes grafted into the pores of a nanosized 2,2′‐bipyridine‐5,5′‐dicarboxylate‐acid MOF. A very specific choice of lanthanides and their ratios, as well as β‐diketonate ligand, is crucial for obtaining the desired properties. The wavelength‐dependent luminescence properties of the materials are very well matched with the excitation wavelengths of a standard UV lamp, and a clearly visible change in luminescence is observed in a narrow temperature range (slightly below and above room temperature), proving them to be excellent materials for use in anti‐counterfeit technologies, which would be almost impossible to mimic.

[1]  Xinhui Zhou,et al.  Visible‐Light Excited Luminescent Thermometer Based on Single Lanthanide Organic Frameworks , 2016 .

[2]  I. Han,et al.  Plasmonic Nanowire‐Enhanced Upconversion Luminescence for Anticounterfeit Devices , 2016 .

[3]  Yuanyuan Su,et al.  Plant-derived fluorescent silicon nanoparticles featuring excitation wavelength-dependent fluorescence spectra for anti-counterfeiting applications. , 2016, Chemical communications.

[4]  Yuanjing Cui,et al.  Multifunctional lanthanide coordination polymers , 2015 .

[5]  A. Morris,et al.  Concentration Dependent Dimensionality of Resonance Energy Transfer in a Postsynthetically Doped Morphologically Homologous Analogue of UiO-67 MOF with a Ruthenium(II) Polypyridyl Complex. , 2015, Journal of the American Chemical Society.

[6]  Yuanjing Cui,et al.  Metal-organic frameworks for luminescence thermometry. , 2015, Chemical communications.

[7]  H. Furukawa,et al.  "Heterogeneity within order" in metal-organic frameworks. , 2015, Angewandte Chemie.

[8]  Feng Xu,et al.  Inkjet printing of upconversion nanoparticles for anti-counterfeit applications. , 2015, Nanoscale.

[9]  Pawan Kumar,et al.  Highly luminescent dual mode rare-earth nanorod assisted multi-stage excitable security ink for anti-counterfeiting applications , 2014 .

[10]  Roger D. Hersch,et al.  A New Anti‐Counterfeiting Feature Relying on Invisible Luminescent Full Color Images Printed with Lanthanide‐Based Inks , 2014 .

[11]  O. Wolfbeis,et al.  Luminescent probes and sensors for temperature. , 2013, Chemical Society reviews.

[12]  L. Carlos,et al.  Ratiometric highly sensitive luminescent nanothermometers working in the room temperature range. Applications to heat propagation in nanofluids. , 2013, Nanoscale.

[13]  J. Long,et al.  Introduction to metal-organic frameworks. , 2012, Chemical reviews.

[14]  Luís D Carlos,et al.  A Luminescent Molecular Thermometer for Long‐Term Absolute Temperature Measurements at the Nanoscale , 2010, Advanced materials.

[15]  Omar M Yaghi,et al.  Metal insertion in a microporous metal-organic framework lined with 2,2'-bipyridine. , 2010, Journal of the American Chemical Society.

[16]  J. Bünzli,et al.  Lanthanide luminescence for functional materials and bio-sciences. , 2010, Chemical Society reviews.

[17]  Koen Binnemans,et al.  Lanthanide-based luminescent hybrid materials. , 2009, Chemical reviews.

[18]  J. Bünzli,et al.  Taking advantage of luminescent lanthanide ions. , 2005, Chemical Society reviews.