Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 490, P. 151823 - 151823
Published: May 1, 2024
Language: Английский
Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 23, 2025
Abstract As the kernel component of X‐ray imaging systems, mainstream flat‐panel detectors suffer from image distortion and blurring when applied to irregular shaped objects, because non‐conformal collocation between detector object. Herein, by taking advantage robust glass‐forming capability versatile processability (TPT) 2 MnBr 4 (TPT = propyltriphenylphosphonium) scintillator, reconfigurable scintillation screen for conformal is explored. Compared flexible polymer screens doped with micro‐/nanoparticles, melt‐casted large‐area (20 × 20 cm ) are homogeneous immune light scattering, thus manifesting optical transmittance above 80% in 525−800 nm range high spatial resolution 25.5 lp mm −1 . More impressively, can be reconfigured shape near its glass transition temperature, realizing continuous conformance or changeable objects. Exemplified a flexed elbow joint circuit variational shapes, demonstrate superiorities both clarity (15 versus 3 imaging) reduction radiation dosage. That, plus scalable fabrication process cost‐effective raw materials, will promise great potential customized medical diagnostics industrial inspection.
Language: Английский
Citations
1
Chemical Science, Journal Year: 2023, Volume and Issue: 14(43), P. 12238 - 12245
Published: Jan. 1, 2023
We have developed high-performance glass-ceramic scintillators via in situ recrystallization from zero-dimensional hybrid metal halide glass counterparts composed of distinct organic cations and inorganic anions.
Language: Английский
Citations
21
Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 12(11)
Published: Dec. 25, 2023
Abstract The current mainstream planar X‐ray imaging techniques face significant challenges for accurately capturing the internal structure of curved objects, since variable distances between objects and flat‐panel scintillation screen cannot eliminate distortion in imaging. Though large‐area transparent screens are much more desirable. Here, organic–inorganic hybrid Mn‐based single crystals ([CH 3 Ph P] 2 MnX 4 , X = Cl, Br, I) exhibiting high photoluminescence quantum yield (PLQY) low melting temperature have been employed to prepare glass application through a low‐temperature strategy. [CH MnBr ‐glass shows PLQY (47.8%), high‐resolution performance (12.3 lp mm −1 ), limit detection (25.33 nGy s impressive irradiation stability (102 Gy). Furthermore, high‐contrast at dose (6.865 µGy per exposure, 14.5 times lower than chest radiograph) is achieved. Based on transition ( T g 53.6 °C) easy‐shapeable properties scintillator, with series sizes Φ 2×4 – 8×4 cm can be easily fabricated show quality. These findings provide paradigm future research shapeable scintillators, unlocking new possibilities 3D
Language: Английский
Citations
19
Matter, Journal Year: 2024, Volume and Issue: 7(7), P. 2521 - 2535
Published: June 18, 2024
Language: Английский
Citations
7
Chemical Science, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 1, 2024
Organic-inorganic metal halide (OIMH) glass offers the advantages of large-scale production, high transparency, and minimal light scattering. However, undesired crystallization in OIMH can occur, leading to deteriorated transparency. Herein, a series bisphosphonium organic cations were designed construct Mn-based crystals with photoluminescence quantum yield (PLQY) near unity, alongside development highly thermally stable glasses. Two strategies employed lower melting point OIMH: alkyl chain elongation fluorine substitution. The (Hex-3,4-2F)MnBr
Language: Английский
Citations
7
Advanced Materials Technologies, Journal Year: 2024, Volume and Issue: 9(8)
Published: Feb. 20, 2024
Abstract Organic–inorganic hybrid metal halides are widely used in X‐ray detection and imaging due to their high absorption efficiency, ease of synthesis, efficient luminescence. However, the issue lead toxicity remains a concern. In this study, non‐toxic, 0D 2,2′‐(Ethylenedioxy)bis(ethylamine) manganese (II) bromide (EDBEMnBr 4 ) is synthesized using simple mechanical grinding method solution that exhibits intense green emission at ≈525 nm. Moreover, change structure under influence temperature water significantly affects its fluorescence color UV light. Scintillator materials with without moisture exposure showed spatial resolutions 7 lp mm −1 , low limits 4.62 5.25 µGy air s respectively, meeting medical industry standards (<5.5 ). Furthermore, based on apparent luminescence triggered by for EDBEMnBr preliminary attempt made apply it humidity monitoring showing boundary has good linear dependence time. This work provides new opportunities Mn‐based both as well detection.
Language: Английский
Citations
6
Aggregate, Journal Year: 2023, Volume and Issue: 5(2)
Published: Nov. 1, 2023
Abstract Scintillators, which can convert high‐energy particles (X‐rays) into detectable low‐energy ultraviolet–visible–near‐infrared photons, are essential components of X‐ray detectors and show extensive practical applications in nondestructive detection medical imaging. Traditionally, inorganic scintillators represented by CsI:Tl have achieved definite progress. However, the harsh preparation conditions, high production cost, poor mechanical properties impede their potential development high‐end imaging field. Organic–inorganic hybrid metal complexes could be excellent alternatives, virtue structural spectral tunability, good solution processability, photophysical properties. This review mainly focuses on eco‐friendly lead‐free (Mn 2+ , Cu + Sb 3+ Sn Ge Ln etc.) complex scintillators. The luminescence mechanisms introduced scintillation performance, such as light yield, limit detection, resolution, etc., is highlighted. Moreover, current challenges perspectives this emerging field described. It hoped to provide some theoretical guidance for continuous new scintillator systems.
Language: Английский
Citations
16
Chemical Communications, Journal Year: 2023, Volume and Issue: 59(76), P. 11361 - 11364
Published: Jan. 1, 2023
Crystal-glass phase transition in luminescent metal halides provides unique opportunities to tune the photoluminescence. Here we report four zero-dimensional Sb-based halide glasses featuring reversible upon heating and acetone triggering conditions, along with modulated luminescence properties. Benefiting from fluorescence switching, information encryption anti-counterfeiting applications are achieved.
Language: Английский
Citations
15
ACS Materials Letters, Journal Year: 2023, Volume and Issue: 6(1), P. 203 - 211
Published: Dec. 14, 2023
Phase-change materials (PCMs) have spurred intensive studies for information storage owing to huge and drastic changes in physical properties (i.e., optical resistivity) during the phase transitions between crystalline-amorphous crystalline-melting-glassy states. However, limited switching greatly hinder their development applications. Herein, we report a pair of hybrid metal halides (R/S-2-HMM)3SbCl6 (2-HMM = 2-(hydroxymethyl)morpholine cation) as model compounds new class photoluminescent PCMs. They undergo stable melt process become amorphous glass by melt-quenching. The crystalline exhibits near-unity yellow photoluminescence with 95% quantum yield due radiative recombination self-trapped excitons excited state [SbCl6]3– octahedra. an orange emission very low good transparency 400–800 nm range. Drastic via crystal-glass transition is exploited rewritable phase-change memory, exemplified 4 × array device. robust crystal–liquid–glass open avenue PCMs further applications remote storage, sensing, display.
Language: Английский
Citations
11
Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(18)
Published: April 3, 2024
Abstract The architectural design and fabrication of low‐cost, high‐performance organic scintillators are critical for medical imaging material/device analysis. However, achieving large‐area high‐transparency in a low‐cost easy‐to‐implement method remains challenge. Herein, new strategy regulating the side chain length maleimide derivatives is demonstrated to develop large‐area, high spatial resolution X‐ray imaging. effective intermolecular interactions relatively twisted molecular structure endow PAM‐M4 molecule with outstanding scintillator properties. More importantly, as first time, pure glassy films diameter over 10 cm optical transparency can be prepared by developed melt‐quenched using crystal powder raw material. This film exhibits excellent ability 27.0 lp mm −1 at MTF = 0.20, which one best results among reported scintillators. this work not only but also demonstrate reliable approach fabricating large area screens superior or industrial applications.
Language: Английский
Citations
4