Luminescence properties of lanthanide tetrakis complexes as molecular light emitters

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 502, P. 215590 - 215590

Published: Dec. 21, 2023

Language: Английский

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Hydrometallurgical recovery of metals from spent lithium-ion batteries with ionic liquids and deep eutectic solvents

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(4), P. 113248 - 113248

Published: June 5, 2024

The widespread adoption of lithium-ion batteries (LIBs) in modern electric vehicles has successfully addressed the issues limited oil and gas resources, as well environmental degradation. This development is crucial for achieving "carbon neutrality" reduce peaking". Proper disposal used LIBs vital effective resource management avoiding pollution potential hazards associated with toxic substances. Moreover, a significant weight fraction constituted by so-called critical raw materials (CRMs), presenting high supply risk price variability. Over past few years, considerable progress been made developing processes safe treatment material recovery from spent LIBs, besides CRMs. Among them, hydrometallurgical recycling components employing affordable eco-friendly ionic liquids (ILs) deep eutectic solvents (DESs) gained attention their potentially superior selectivity, low energy consumption, impact. Such present various advantages over traditional organic employed liquid separations terms volatility, safety, chemical thermal stability, recyclability, selectivity. review provides an overview most recent advances application ILs DESs to recover CRMs LIBs.

Language: Английский

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Towards opto-structural parameters to enhance the circularly polarized luminescence brightness of Eu^III β-diketone complexes with chiral auxiliary ligands

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(14), P. 5097 - 5107

Published: Jan. 1, 2024

Tuning the overall emission quantum yield ( ϕ LLn), dissymmetry factor g lum ), as well CPL brightness by changing electronic structure and microsymmetry of Eu III coordination polyhedron.

Language: Английский

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Perspectives and challenges in circularly polarized luminescence of lanthanide(III) complexes: From solution-based systems to solid-state applications

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 523, P. 216279 - 216279

Published: Oct. 16, 2024

Language: Английский

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The accurate assessment of the chemical speciation of complex systems through multi-technique approaches

Pure and Applied Chemistry, Journal Year: 2024, Volume and Issue: 96(4), P. 597 - 623

Published: April 1, 2024

Abstract Chemical speciation studies, i.e., the study of distribution an element or compound among its various species in a system interest, are fundamental importance. investigations can be performed mainly by either direct measurement chemical different analytical techniques, modeling through equilibrium thermodynamic data, based on use stability constants (and other parameters) formed species. For these purposes, series techniques used. As soon as complexity systems interest increases, need for more detailed information arises. such, multi-technique approach is essential to derive complementary data define system. In this tutorial review we analyzed most common instrumental employed studies and analysis. The main advantages disadvantages potentiometry, voltammetry, coulometry, UV–vis spectrophotometry, spectrofluorimetry, NMR, EPR, ITC, HRMS quantum mechanical calculations, together with brief mention less discussed practical examples their application. aim provide guide all scientists interested field.

Language: Английский

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Tailoring the local environment of Ln3+ in pyridine-based complexes: effect on the thermodynamic, kinetic, structural and relaxation properties

Dalton Transactions, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The replacement of one or two negatively charged carboxylate functions by neutral pyridine imidazole pendant groups in pyridine-based polyaminopolycarboxylate ligands was investigated. Four were synthesized and the thermodynamic, kinetic, structural relaxation properties their corresponding Ln3+ complexes thoroughly studied. protonation constants as well stability determined pH potentiometric measurements. While no strong effect on is observed when replaced an a pyridine, detrimental to overall complexes. dissociation kinetics GdImPy GdPyPy, evaluated through Eu3+-exchange reactions, predominantly proceed via acid-catalyzed mechanism, with minimal direct Eu3+ attack. presence protonatable function ring leads more labile NMR luminescence studies combined DFT calculations evidenced coordination arms. Gd3+ exhibit high relaxivity values (r1 = 8.25 mM-1 s-1 7.97 at 60 MHz 25 °C for respectively) accordance bishydrated character, aggregation phenomena are over wide range concentrations. Variable-temperature 17O NMRD data analysis GdPyPy provided insights into microscopic parameters affecting properties. Interestingly, water exchange rate strongly accelerated arm compared which could be related steric crowding around ion. inner-sphere molecules not displaced interactions biological anions such citrate phosphate. However, decrease ca. 30% carbonate, confirmed 1H lifetime

Language: Английский

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Nanocellulose chiral synergistic effect enhances circularly polarized luminescence of lanthanide electric dipole transition bands

Cellulose, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Language: Английский

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Unveiling Chiral Perovskite CD Signal Scaling: Discerning Authentic and Counterfeit Signals through Sample-State Analysis

Analytical Chemistry, Journal Year: 2023, Volume and Issue: 95(44), P. 16201 - 16209

Published: Oct. 25, 2023

Circular dichroism (CD) spectroscopy is a well-known and powerful technique widely used for distinguishing chiral enantiomers based on their differential absorbance of the right left circularly polarized light. With increasing demand solid-state optics, CD has been extended to elucidate chirality samples beyond traditional solution state. However, due sample preparation differential, spectra same compound measured by different researchers may not be mutually consistent. In this study, we employ solution, powder, thin-film, single-crystal explore challenges associated with measurements distinguish between genuine fake signals. Rational fabrication can effectively minimize macroscopic anisotropic nature thereby mitigate influence linear (LD) birefringence (LB) effects, which arise from anisotropy-induced differences in absorbances refractive indices. The local overall isotropic features high-quality thin-film achieve an optically state, exhibits superior signal repeatability at front back sides angles rotating along light path. addition, thickness-induced overload absorption saturation pose more severe than LBLD-induced amplified but are rarely focused on. deep UV region leads presence signals, while results complete loss signal. These findings help obtain accurate signals well-fabricated avoid LDLB optimize thickness no

Language: Английский

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The application of chiral groups in circularly polarized luminescent lanthanide complexes

Polyhedron, Journal Year: 2025, Volume and Issue: 272, P. 117452 - 117452

Published: Feb. 25, 2025

Language: Английский

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Circularly polarized red luminescence based on new enantiopure menthol-functionalized tris-β-diketonate-Eu3+ binary complexes

Journal of Luminescence, Journal Year: 2025, Volume and Issue: unknown, P. 121206 - 121206

Published: March 1, 2025

Language: Английский

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