Journal ArticleDOI
A paper-based lanthanide smart device for acid–base vapour detection, anti-counterfeiting and logic operations
Xiang Li,Hao Chen,Alexander M. Kirillov,Yujie Xie,Changfu Shan,Bingkai Wang,Chunling Shi,Yu Tang +7 more
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TLDR
Paper-based devices have attracted extensive attention due to their portability, low-cost, ubiquity, low environmental footprint and ease of operation as discussed by the authors, and they have been successfully expanded for other applications that include anti-counterfeiting and logic gate systems.Abstract:
Paper-based devices have attracted extensive attention due to their portability, low-cost, ubiquity, low environmental footprint and ease of operation. In the present study, two lanthanide complexes, namely [Eu(PBA)3(H2O)2] (Eu-PBA) and [Tb(HPBA)2(NO3)3] (Tb-HPBA) were synthesized using an amide-type β-diketone building block, N-(2-pyridinyl)benzoylacetamide (HPBA), which is capable of changing its energy-level to match that of Tb3+ and Eu3+ ions in an acid–base environment. This feature was used for the design and assembly of a simple and cost-effective paper-based lanthanide smart device (abbreviated as Paper-Eu/Tb), which was obtained by impregnating the filter paper with both the Eu-PBA and Tb-HPBA complexes; related homometallic Paper-Eu and Paper-Tb materials were also generated and characterized for comparative purposes. The obtained Paper-Eu/Tb device shows excellent luminescence properties, thus allowing its efficient use as a smart sensor for the naked-eye detection of various acid–base vapours with quick response, good reversibility and selectivity. A similar concept and the resulting paper-based device was also successfully expanded for other applications that include anti-counterfeiting and logic gate systems. Full characterization of the paper-based materials and examples of their use are described.
Introduction to the international collaboration
The present article is a part of an ongoing collaboration between the College of Chemistry and Chemical Engineering of Lanzhou University (P.R. China) and Instituto Superior Tecnico of University of Lisbon (Portugal). Starting from 2013, this collaboration has been successful in merging the expertise of the Chinese group on novel rare-earth complexes and their smart devices for luminescent probes, tumor marker/treatment, optical anti-counterfeiting, and catalysis with that of the Portuguese group on coordination chemistry, crystal engineering, and catalysis. This Sino-European collaboration has already resulted in the publication of 10 research papers devoted to the design and assembly of various smart nanocomposite materials for applications ranging from cancer therapy and detection of biomarkers to oxidation catalysis and sensing or separation of metal ions.read more
Citations
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Journal ArticleDOI
A Stimuli-Responsive Smart Lanthanide Nanocomposite for Multidimensional Optical Recording and Encryption.
TL;DR: A stimuli-responsive lanthanide-based smart nanocomposite fabricated by supramolecular assembly and applied as an active material in multidimensional memory materials, giving rise to intriguing memory performance in the spatial and temporal dimension.
Journal ArticleDOI
Advances in luminescent lanthanide complexes and applications
TL;DR: Luminescent lanthanide complexes have been widely investigated as light emitting materials in bio-imaging and sensing, solid state lighting and display, anti-fake tags and light conversion films, due to their characterized photophysical properties including large Stokes shift, long lifetime, and sharp emission spectrum as discussed by the authors.
Journal ArticleDOI
Stretchable, flexible, and transparent SrAl2O4:Eu2+@TPU ultraviolet stimulated anti-counterfeiting film
TL;DR: In this paper, the anti-counterfeiting film obtained by integrating the traditional SrAl2O4:Eu2+ phosphors and the thermoplastic material TPU is stretchable, flexible, and transparent.
Journal ArticleDOI
AIE-active molecule-based self-assembled nano-fibrous films for sensitive detection of volatile organic amines
TL;DR: In this paper, two salicylaldehyde derivatives functionalized naphthalimides (SFN) and tert-butyl carbazole (SFC) were synthesized, and their photophysical properties were investigated systematically.
Journal ArticleDOI
Synthesis and photo-physics of red emitting europium complexes: An estimation of the role of ancillary ligand by chemical partition of radiative decay rate
TL;DR: In this article, three highly luminescent Eu(III) complexes of the type [Eu(β-diket.)3(tm-phen)] where β-Diket.
References
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Diagnostics for the Developing World: Microfluidic Paper-Based Analytical Devices
TL;DR: Microfluidic paper-based analytical devices are a new class of point-of-care diagnostic devices that are inexpensive, easy to use, and designed specifically for use in developing countries.
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Journal ArticleDOI
Correlation between the lowest triplet state energy level of the ligand and lanthanide(III) luminescence quantum yield
Martti Latva,Harri Takalo,Veli-Matti Mukkala,Cristina Matachescu,Juan Carlos Rodríguez-Ubis,Jouko Kankare +5 more
TL;DR: In this article, the luminescence properties of 41 different Eu(III) and Tb(III), chelates that were synthesized with the purpose of developing new markers for chemical and biochemical applications were measured in aqueous solution and their suitability for labels in time resolved immunoassays were evaluated.
Journal ArticleDOI
Ammonia sensors and their applications - a review
TL;DR: In this article, a survey of sensors and sensor systems for gaseous ammonia is presented, where the authors present different application areas for ammonia sensors or measurement systems and different techniques available for making selective ammonia sensing devices.
Journal ArticleDOI
A colorimetric sensor array for odour visualization
Neal A. Rakow,Kenneth S. Suslick +1 more
TL;DR: A simple optical chemical sensing method that utilizes the colour change induced in an array of metalloporphyrin dyes upon ligand binding while minimizing the need for extensive signal transduction hardware is reported.