Preparation of Spinel-Type Black Pigments Using Microwave-Assisted Calcination of Stainless Steel Dust: The Effect of Manganese Molar Content DOI Creative Commons
Xiang Zhang, Yanghui Xu, Zhiqiao Li

et al.

Metals, Journal Year: 2023, Volume and Issue: 13(12), P. 1949 - 1949

Published: Nov. 28, 2023

Stainless steel dust is rich in valuable metal elements including Fe, Cr, Ni and Mn, which can be utilized to prepare Fe–Cr–Ni–Mn series black pigments. Meanwhile, manganese absorb the majority of visible light wavelength range, improves color rendering performance However, coloring mechanism above pigments not clear. Therefore, effect oxide content on preparation spinel-type from microwave-assisted calcination stainless was studied this work. The results show that with increase MnO raw mixture, crystal plane spacing increases 0.2525 nm 0.2535 nm, grain size grows 61.4619 79.7171 lattice constant 0.8377 0.8406 nm. Moreover, band gap decreased 1.483 eV 1.244 eV, absorbance significantly has a consistent L*, a* b* values reduce 41.8, 0.6, 1.6 32.0, 1.0, 0.8, respectively. react spinel dust, forming Mn3O4, MnCr2O4 (Fe,Cr)O4 system, regular polyhedral structure. prepared have excellent thermal stability at 1100 °C good compatibility transparent glazes, adhered surface ceramic tiles after demonstrate better as increases.

Language: Английский

Photochromic metal-organic frameworks based on diarylethene: synthesis, crystal structure and application in coating DOI

Le Zhao,

Xiangcong Meng,

Jincheng Du

et al.

Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 141715 - 141715

Published: Feb. 1, 2025

Language: Английский

Citations

1
A fluorescence–phosphorescence dual-emissive Cu3(pyrazolate)3 complex with highly tunable emission colours for anticounterfeiting and temperature sensing DOI
Ze-Miao Xiao, Jing-Xuan Yang, Xu Chen

et al.

Inorganic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(6), P. 1808 - 1818

Published: Jan. 1, 2024

An anti-counterfeit label and a luminescence thermometer are fabricated by the Cu 3 pyrazolate complex, showing switching between blue fluorescence orange or red phosphorescence through modulating excitation energies temperatures.

Language: Английский

Citations

7
White-light emitting self-assembled graphene quantum dots from coal soot DOI Creative Commons
Shiv Rag Mishra, Tuhin Mandal,

Rabi Narayan Senapati

et al.

Carbon letters, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 18, 2025

Language: Английский

Citations

0
Advanced anticounterfeiting polymer inks for high-level encryption and authentication technologies DOI

Reza Khalilzadeh,

Milad Babazadeh‐Mamaqani,

Moein Mohammadi‐Jorjafki

et al.

Progress in Materials Science, Journal Year: 2025, Volume and Issue: unknown, P. 101487 - 101487

Published: April 1, 2025

Language: Английский

Citations

0
Recent Advances in d‐f Transition Lanthanide Complexes for Organic Light‐Emitting Diodes: Insights Into Structure–Luminescence Relationships DOI
Jinghong Li, Yanbo Zhao, Donghong Yu

et al.

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: April 26, 2025

Abstract Recently, d ‐ f transition lanthanide complexes have emerged as promising emitters with high exciton utilization efficiency (EUE) and short excited state lifetime simultaneously, demonstrating potential applications in organic light‐emitting diodes (OLEDs). First, the is parity‐allowed, resulting excited‐state lifetimes of nanosecond (ns) scale. Second, 5 orbitals are sensitive to ligand‐field environments, their splitting can be finely tuned by ligand field, enabling precise control emission colors. Third, spin‐allowed single‐electron transitions, such those open‐shell Ce(III) Eu(II) complexes, help address limitations arising from singlet triplet excitons. To date, Ce(III)‐based blue OLEDs achieved external quantum efficiencies (EQEs) exceeding 20% brightness levels over 30 000 cd m −2 . However, based on still face significant challenges, including color tunablility, photoluminescence yields (PLQYs), stability. This review first provides an introduction luminescent materials. Next, overview ligands used presented, covering four distinct types. Finally, in‐depth discussion explores relationship between structures, (PL) electroluminescence (EL) performance.

Language: Английский

Citations

0
Unusually Large Ligand Field Splitting in Anionic Europium(III) Complexes Induced by a Small Imidazolic Counterion DOI Creative Commons
Lucca Blois, Israel F. Costa, João Honorato

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(36), P. 16861 - 16871

Published: Aug. 28, 2024

Luminescent trivalent lanthanide (Ln3+) complexes are compounds of technological interest due to their unique photophysical properties, particularly anionic tetrakis complexes, given higher stability and emission quantum yields. However, structural studies on the cation–anion interaction in these relation such luminescence still lacking. Herein, interactions two luminescent tetrakis(2-thenoyltrifluoroacetonato)europate(III) with alkylimidazolium cations, specifically 1-ethyl-3-methylimidazolium 1-butyl-3-methylimidazolium investigated. The Eu3+ were synthesized characterized by elemental analysis, mass spectrometry, single-crystal X-ray crystallography, spectra recorded at 77 K. Quantum chemical calculations also performed. crystallography revealed hydrogen bonds between enolate ligands imidazolium ring hydrogens. complex had crystallographic sites, confirmed spectroscopy. exhibited an unusual 300 cm–1 splitting 5D0 → 7F1 transition, as reproduced ligand field calculations, suggesting a stronger bonding smaller substituent. We hypothesize that this strong likely causes angular distortions, resulting high splittings.

Language: Английский

Citations

3
Facile conjugate electro-spinning to achieve nanofiber yarns with concurrent color-tunable photoluminescence and tailored superparamagnetism DOI

Jiao Tian,

Wenting Yang,

Jialiang Jiang

et al.

European Polymer Journal, Journal Year: 2024, Volume and Issue: 217, P. 113307 - 113307

Published: July 16, 2024

Language: Английский

Citations

1
Progress, application and prospect of rare earth-based perovskite light-emitting diodes DOI

Lunyao Pan,

Wen Li,

Xiankan Zeng

et al.

Ceramics International, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 1, 2024

Language: Английский

Citations

1
Preparation of Spinel-Type Black Pigments Using Microwave-Assisted Calcination of Stainless Steel Dust: The Effect of Manganese Molar Content DOI Creative Commons
Xiang Zhang, Yanghui Xu, Zhiqiao Li

et al.

Metals, Journal Year: 2023, Volume and Issue: 13(12), P. 1949 - 1949

Published: Nov. 28, 2023

Stainless steel dust is rich in valuable metal elements including Fe, Cr, Ni and Mn, which can be utilized to prepare Fe–Cr–Ni–Mn series black pigments. Meanwhile, manganese absorb the majority of visible light wavelength range, improves color rendering performance However, coloring mechanism above pigments not clear. Therefore, effect oxide content on preparation spinel-type from microwave-assisted calcination stainless was studied this work. The results show that with increase MnO raw mixture, crystal plane spacing increases 0.2525 nm 0.2535 nm, grain size grows 61.4619 79.7171 lattice constant 0.8377 0.8406 nm. Moreover, band gap decreased 1.483 eV 1.244 eV, absorbance significantly has a consistent L*, a* b* values reduce 41.8, 0.6, 1.6 32.0, 1.0, 0.8, respectively. react spinel dust, forming Mn3O4, MnCr2O4 (Fe,Cr)O4 system, regular polyhedral structure. prepared have excellent thermal stability at 1100 °C good compatibility transparent glazes, adhered surface ceramic tiles after demonstrate better as increases.

Language: Английский

Citations

1