Functional Copolymers Married with Lanthanide(III) Ions: A Win-Win Pathway to Fabricate Rare Earth Fluorescent Materials with Multiple Applications

Abstract

Lanthanide­(III)-based luminescent materials have attracted great research interests due to their unique optical, electronic, and chemical characteristics. Up to now, how to extend these materials into large, broad application fields is still a great challenging task. In this contribution, we are intended to present a simple but facile strategy to enhance the luminescence from lanthanide ions and impart lanthanide­(III)-based luminescent materials with more applicable properties, leading to meet the requirements from different purposes, such as being used as highly emissive powders, hydrogels, films, and sensitive probes under external stimuli. Herein, a water soluble, blue color emissive, temperature sensitive, and film-processable copolymer (Poly-ligand) was designed and synthesized. Upon complexing with Eu3+ and Tb3+ ions, the red color-emitting Poly-ligand-Eu and green color-emitting Poly-ligand-Tb were produced. After finely tuning the ratios between them, a standard white color emitting Poly-ligand-Eu1:Tb4 (CIE = 0.33 and 0.33) was obtained. Furthermore, the resulted materials not only possessed the emissive luminescent property but also inherited functions from the copolymer of Poly-ligand. Thus, these lanthanide­(III)-based materials were used for fingerprint imaging, luminescent soft matters formation, colorful organic light-emitting diode device fabrication, and acid/alkali vapors detection.

Marcadores forenses para revelação de digital com sangue: uma breve revisão

“…Nanopartículas de conversão ascendente (NPs-UP) são extremamente reportadas como promissoras para revelação de impressão digital latente com sangue, particularmente nanocristais dopados com íons lantanídeos são denominados a chave para a próxima geração de imagens fluorescentes (Chen et al, 2021;Li et al, 2016;Taydakov et al, 2011;Younis et al, 2021;). Tendo em vista que elas podem emitir uma forte fluorescência visível, torna possível alcançar uma alta sensibilidade e um alto contraste na revelação de impressões digitais por meio de imagens de fluorescência (Zhang et al, 2021).…”

Coordination-Assembly of Lanthanide Supramolecular Hydrogels with Luminescent Multi-stimulus Response

“…Accurate design of luminescent materials that are sensitive to external stimuli, such as light, temperature, pH, metal ions, chemical action, and mechanical stress, is critical to the development of next-generation smart optical materials. − Over the past few decades, luminescent supramolecular hydrogels have shown extraordinary potential and established a multibillion dollar industry until today for their versatile functions and unique biocompatibility. − Various functional supramolecular hydrogels have been constructed through internal network cross-linking triggered by non-covalent interactions, such as π–π interactions, hydrogen bond, metal-coordination, and electrostatic interactions. − Particularly, a metal/ligand complex has unique kinetic properties and sensitive stimulus responsiveness arising from the coordination bonds, which provides a worthy strategy for the construction of luminescent stimulus-responsive supramolecular hydrogels …”

Surface Chemistry Provoked Strategy to Develop Sustainable Latent Fingerprints Visualization and Multiple Anti-Counterfeiting Trajectory: Aggregation-Induced Emission Mechanism Based Active Conjugated Imidazole Luminogens

“…Till date, numerous chemical as well as physical methods were attempted for visualization of latent ngerprints (LFPs). However, most of the traditional techniques suffer from severe drawbacks, namely low sensitivity, contrast, selectivity, sturdy background hindrance as well as high toxicity [6][7][8][9][10] . Among them, most commonly used powder dusting technique damages the FPs ridge characteristics at the time of staining and also dust is inevitably dangerous to the developers.…”