CRYSTENGCOMM
·
2024
·Vol. 27
·期 5
·661-667
·
IF 2.6
Zhen-Dong Xue,Yi Zhang,Hao-Yu Zhu,Juan-Juan Shao,Qiang Gao,Fang-Ming Wang
Herein, four new cuprous iodide hybrid materials 1–4 were synthesized at room temperature using two types of ligands: imidazoles and triphenylphosphine. Photoluminescence results showed that all the materials exhibited blue emissions with high internal quantum yields (IQYs) ranging from 51% to 64%. Surprisingly, the introduction of triphenylphosphine induced strong aggregation-induced emission (AIE). Additionally, the luminescence lifetimes of these materials were significantly longer, ranging from 11.53 μs to 24.33 μs, which is much longer than those of previous materials. These findings suggest that these materials could be potential candidates for non-rare earth element (REE) lighting phosphors.
研究领域:
材料化学
·
光物理
·
无机-有机杂化材料
·
发光材料
·
非稀土磷光体
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JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Jian Zhou,Dan Sun,Lei Wang,Leiming Guo,Wei Chen,Fengjiao Yu,Yong Wang,Yang Yang
Mixed-matrix membranes blended with nanosized inorganic fillers have been widely used in ultrafiltration (UF) for large molecule separation. In this work, we provide a feasible route to construct mixed-matrix polysulfone (PSf) UF membranes via the nonsolvent-induced phase inversion process, utilizing sheet-like copper iodide superstructures (s-CuI) as fillers. The size of s-CuI in lateral dimension reaches micrometer scale, but the nanosheets can be well embedded in the polymer matrix with their 2D basal planes parallel to the membrane surface . On account of the stacking straight-through channel structure of s-CuI and its large dimension spanning across multiple membrane pores within the layer, the PSf membrane blended with 0.8 wt% content of s-CuI displays optimal UF performance with a pure water permeation (PWP) of 1473 L/(m 2 h bar) and a bovine serum albumin (BSA) rejection of 92%. In contrast, the pure PSf membrane only presents a PWP of 556 L/(m 2 h bar) and a BSA rejection of 58.2%. Besides, the enhancement of mechanical stability for the PSf/s-CuI 0.8% membrane is significant and the leakage of the s-CuI filler is negligible. Though the antifouling performance of the PSf/s-CuI 0.8% membrane against the protein BSA is limited, its flux is always 2–3 times higher than that of the pure PSf membrane in each step during a sequential test of fouling behavior . This study indicates that it is highly promising to employ designable superstructures as functional fillers to construct novel mixed-matrix membranes with good interfacial compatibility and superior performance.
研究领域:
材料科学
·
膜分离技术
·
高分子化学
·
纳米复合材料
·
生物分离工程
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NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 47
·期 5
·2556-2564
·
IF 3.925
Juan-Juan Shao,Jian-Ling Ni,Wei-Min Chen,Peng-Lai Liu,Abraham Mensah,Li-Zhuang Chen,Fang-Ming Wang
As a luminescent material with excellent structural diversity and optical tunability, cuprous iodide organic–inorganic hybrid semiconductors have attracted extensive attention in the field of environmental friendly solid-state lighting (SSL). In order to systematically study how tiny changes in ligands influence the luminescence properties of their complexes, in this study, the tail atoms of ethyl groups in ligands are modified with halogen atoms (F, Cl, and Br) and four all-in-one (AIO)-structured cuprous iodide inorganic–organic hybrid semiconductor materials (Cu2I4(Ln)2) are successfully obtained. The adjustment of the tail atoms effectively regulated the stacking modes of Cu2I42− clusters and their luminescence properties, realizing the transition of the crystal luminescence color from blue to green with the internal quantum yield (IQY) increasing from 1.57% to 53.39%. Their optical diffuse reflectance spectra and density functional theory calculations (DFT) helped investigate the origin and mechanism of luminescence. They are very stable and have good solution processability, which means that they can be applied as rare-earth element-free lighting phosphors. This study can provide ideas and a theoretical basis for designing cuprous iodide cluster luminescent materials in future.
研究领域:
材料科学
·
无机化学
·
光电子学
·
半导体物理
·
发光材料
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计算化学
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Fa Cao,Ling Jin,Yong Wu,Xiaohong Ji
Self-powered Ultraviolet (UV) photodetectors (PDs) have attracted great attention due to their outstanding performance. Herein, we report the successful fabrication of self-powered UV PDs based on ZnO/CuI/Au heterojunction . An ultra-high on/off ratio of 4250 and fast rise/decay times of 0.41/0.08 s have been demonstrated from the ZnO/CuI/Au PD. Moreover, the PD exhibits a high responsivity of 61.5 mA/W and detectivity of 1.7 × 10 10 Jones. The device displays long-term cyclic stability with 98.9% retention after 1000 cycles continuous test and superior environmental stability with 97.1% retention tested after 6 months. The synergistic effects of plasmonic Au nanoparticles and ZnO/CuI pn heterostructure play important roles in the enhancement of the photodetect ability. The concept of employing plasmonic Au nanoparticles onto the heterostructure indicates huge potential in achieving self-powered UV PDs for practical applications.
研究领域:
材料科学
·
光电子学
·
纳米技术
·
半导体物理
·
器件工程
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Sanshan Hu,Qi-Meige Hasi,Jiaxue Long,Han Zhang,Lingyan Song,Chaohu Xiao,An Li,Lihua Chen
Oil spills in the marine environment and the wanton discharge of industrial oily wastewater pose a serious threat to the ecosystem and human health. Thus, efficient and rapid treatment of oily wastewater is of great significance. Conjugated microporous polymers (CMPs) have a large specific surface area, adjustable pore size, and especially their inherent hydrophobicity, making them an ideal adsorption material for the treatment of oily wastewater. Herein, a novel self-supporting CMPs aerogel (TCMPs) with a three-dimensional porous network structure was prepared by using 2,4,6-tris-(3-bromophenyl)-(1,3,5)-triazine and 1,4-diethynylbenzene as polymer monomers through the Sonogashira-Hagihara coupling reaction. Based on the inherent strong hydrophobic properties and extraordinary pore structure of TCMPs, its adsorption capacity for nine types of oils/organic solvents is 9–25 times its own weight. Moreover, TCMPs achieved an oil–water separation efficiency of 96%. The solar steam generator (TCMPs-PPy) was fabricated by spraying polypyrrole on the surface of melamine sponge and combining it with TCMPs. Under 1 kW m −2 radiation, TCMPs-PPy had a photothermal conversion capability and evaporation efficiency of 83.27% in 1 wt% oily water. The findings of this work implied that the CMPs-based aerogel demonstrates the potential of an excellent material for treating oily wastewater.
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Advanced Materials Technologies
·
2026
·
IF 6
Ying Chu,Liang Chen,Chen Yu,Yuan Xie,Jia Jia,Aifei Wang,Tianshi Qin
Cuprous (Cu(I)) halide clusters have garnered significant attention for light-emitting devices (LEDs) due to their high photoluminescence quantum yields and broadband emission, both originating from self-trapped excitons. However, their practical implementation is impeded by poor solution processability and challenges in fabricating high-quality films. Herein, we report a facile, scalable mechanochemical synthesis of highly luminescent Cu(I) halide clusters via direct ball milling under ambient conditions. Notably, the incorporation of sodium iodide enhances the dispersibility and solution processability of these clusters without deteriorating their emission properties, enabling the preparation of stable colloidal dispersions and the one-step solution deposition of smooth, uniform films. The resultant electroluminescent devices achieve a peak external quantum efficiency of 5.9% and exhibit uniform yellow emission over a large area of 5 × 5 cm 2 . Through judicious selection of charge-transport layers, we further demonstrate broadband white electroluminescence with voltage-tunable color temperature. Our strategy provides a practical pathway to efficient, scalable, and low-toxicity Cu(I) halide cluster LEDs, while offering key design principles for developing high-performance solution-processable emissive materials in next-generation solid-state lighting.
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OPTICAL MATERIALS
·
2026
·
IF 4.3
Dewei Ma,Xiaoyang Qin,Chengdong Wu
Lead-free copper-based halides have attracted significant attention for optoelectronic applications due to their excellent photophysical properties, good stability, and environmental friendliness. However, current synthesis methods for copper-based halide nanocrystals either require high-temperature inert protection or rely on insulating long-chain ligands, limiting their practical applications. In this study, we report a facile one-pot room-temperature synthesis of Cs 3 Cu 2 X 5 (X = Cl, Br) and CsCu 2 I 3 nanocrystals using an anti-solvent method. Short-chain propionic acid (PA) is introduced as a surface passivation ligand, significantly enhancing photoluminescence through defect passivation. The PA-coated Cs 3 Cu 2 Cl 5 nanocrystals exhibit good resistance to ethanol but poor stability in water. To improve thermal stability, PMMA encapsulation is employed, with the composite film retaining ∼90% of initial PL intensity at 80∼90 °C and two-thirds at 150 °C. Time-resolved PL decay measurements confirm that both PA coating and PMMA encapsulation prolong the exciton lifetime. This work provides a green and effective strategy for the synthesis and surface engineering of copper-based halide nanocrystals for environmentally friendly optoelectronic applications.
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Nature Communications
·
2026
·
IF 18.1
Shen Yu,Pan Ting,Cheng Xiaoya,Zhang Senyu,Yan Pu,Li Jiaxing,Chen Tangzhe,Ding Meijuan,Liu Xiangmei,Zhao Qiang,An Zhongfu,Lai Wen-Yong
Flexible X-ray scintillators are critical for next-generation conformal imaging and wearable radiation monitoring, yet their development is hindered by the persistent trade-offs among particle dispersion, scintillation efficiency, and mechanical robustness in conventional composite designs. Here, we overcome these limitations via a ligand-matrix interface engineering strategy, integrating highly soluble copper-iodide clusters with a self-healing fluorinated block copolymer to produce highly stretchable and autonomously self-healing scintillator films. Interfacial coordination and ion-dipole interactions guide the in situ self-assembly of uniformly dispersed, aggregation-induced emission-active clusters within the polymer matrix, while dynamic dipole-dipole interactions between fluorinated segments confer high stretchability (up to 2000% strain) and room-temperature self-healing capability. The resulting films achieve a high spatial resolution of 16.4 lp mm −1 , enabling distortion-free conformal imaging of curved objects and maintaining high-fidelity imaging under severe mechanical deformation or in aqueous environments. Furthermore, dip-coated textiles functionalized with the composite serve as wearable radiation-alert systems that synergize real-time visual detection with passive X-ray shielding. This work provides a versatile materials platform that reconciles long-standing performance conflicts, paving the way for advanced conformal diagnostics and scalable personal radiation protection technologies.
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SENSORS AND ACTUATORS A-PHYSICAL
·
2026
·
IF 5.1
Qingyin Feng,Xueping Zhao,Zhuoya Zhang,Hai Zhang,Pucun Bai
A flexible γ-CuI/AZO p-n heterojunction UV photodetector was successfully fabricated on a PEN substrate. • Self-powered UV detection with R of 4 mA/W, D* of 2.62 × 10 11 Jones, and fast rise time and decay time (306/116 ms). • The heterojunction exhibits excellent mechanical durability, maintaining stable photoresponse after 500 bending cycles. Flexible ultraviolet (UV) photodetectors have broad application prospects in wearable electronics and low-power optoelectronic systems. In this work, a self-powered UV photodetector based on a γ-CuI/AZO p-n heterojunction was successfully fabricated on a flexible polyethylene naphthalate substrate. Both γ-CuI and AZO films exhibit high visible-light transmittance with optical bandgaps of 3.03 eV and 3.28 eV, respectively, rendering them suitable for UV detection. The device demonstrates distinct rectification behavior in the dark and a markedly enhanced photoresponse under 365 nm UV illumination, achieving stable self-powered operation at 0 V bias. Under a 0 V bias and an incident power density of 103.2 mW/cm 2 , the device demonstrates rise and decay times of 306 ms and 116 ms, respectively. At 33.4 mW/cm 2 , the device achieves a responsivity of 4 mA/W and a specific detectivity of 2.62 × 10 11 Jones, confirming its effective self-powered UV detection capability. Furthermore, cyclic bending tests under a fixed 5-mm radius curvature revealed that the device maintains distinguishable photoresponse after 500 bending cycles, demonstrating robust mechanical tolerance and reliable photodetection under fatigue deformation. This work provides a feasible route for the construction of flexible self-powered UV photodetectors based on p–n heterojunctions. Download: Download high-res image (157KB) Download: Download full-size image
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ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Qiaomei Lu,Le Huang,Haiyang Qiu,Yahui Shangguan,Wenmin Zhang,Yanjian Chen,Qinying Liu,Li Chen,Lan Zhang
Background Microporous organic network (MON) is a novel type of adsorbent and has wide applications in sample pretreatment. However, MON has a rigid plane and exhibits adsorption with most organic compounds, so they suffer from poor selectivity. The lack of selectivity hinders its practical application in complex matrices. Results This study focuses on enhancing the selectivity of MON by constructing a molecularly imprinted polymer (MIP) layer on its surface. A ganoderic acid molecularly imprinted magnetic microporous organic network composite (MMON@OA-MAA) was synthesized for the enrichment and separation of ganoderic acid (GD). The prepared MMON@OA-MAA material featured two key advantages: a high adsorption capacity (14.38-22.94 mg g −1 ) and excellent selectivity (α ≥ 1.5). The composite enabled hydrogen bonding, π-π interaction, and host-guest interactions with GD, which possessed active sites such as steroidal rings, hydroxyl groups, and carbonyl groups. An UPLC-MS/MS method was established and successfully applied to the efficient analysis of four trace GDs in complex Ganoderma samples, demonstrating a good linearity (r ≥ 0.9991), a low limit of detection (5.0 pg mL −1 ) and satisfactory recovery (81.0%-119.8%). Significance This research was a novel attempt to combine MIP with MMON to form MMON-MIP composite, achieving the synergistic enhancement of high selectivity and large adsorption capacity. The extraction process was simple and rapid, facilitating its broader application in the field of sample pretreatment, particularly for efficient analysis of trace bioactive components in complex natural matrices.
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INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Liang Guangling,Dong Wanqi,Lin Yuan,Yu Xiaoqing,Xu Gang,Wang Guane
Heterojunction materials achieve efficient charge transfer
and
carrier separation through built-in- electric fields at the interfaces,
thereby substantially enhancing the sensitivity and selectivity of
gas sensors. However, traditional particle-contact heterojunctions
suffer from discontinuous interfaces and limited contact areas, resulting
in low charge transport efficiency and restricted gas-sensing performance.
Herein, we construct two intramolecular D–A heterostructured
frameworks (CuBr-CuMND and CuI-CuMND) by directionally linking CuX
chains (donor) and CuMND (acceptor) via Cu–S coordination bonds.
The atomically continuous heterointerface achieves spatial highest
occupied molecular orbital/lowest unoccupied molecular orbital separation
and a strong internal built-in electric field (IEF). CuI-CuMND exhibits
a record-low detection limit of 0.05 ppb and a response of 1315% toward
10 ppm of NO 2 , along with excellent long-term stability
at room temperature without light assistance. Theoretical calculations
reveal that, compared with CuBr-CuMND, CuI-CuMND exhibits a larger
Fermi level disparity, which generates a stronger IEF that significantly
enhances interfacial charge separation and transport, ultimately leading
to a higher response value and faster response/recovery time toward
NO 2 . This study establishes a molecular-scale intramolecular
heterojunction engineering strategy for room-temperature trace-gas
sensing.
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INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Pan Shifeng,Tong Hua,Li Haibo,Wang Yuansheng,Zhou Ziyang,Liu Wei,Ouyang Gangfeng
Currently, mainstream white light-emitting diodes (WLEDs)
fabricated
by combining a blue LED chip with Y 3 Al 5 O 12 :Ce 3+ yellow phosphor suffer from poor color rendering,
unstable color temperature, and blue light hazards due to the lack
of a red spectral component. In this study, a low-cost, easily synthesizable,
nontoxic, and highly stable red-emitting Cu(I)-based hybrid material, Cu 2 I 2 (2-et-3-mepz) (2-et-3-mepz = 2-ethyl-3-methylpyrazine),
is developed. This red-emitting material exhibits intense red emission
under ultraviolet/blue light excitation, with an emission peak at
628 nm and CIE chromaticity coordinates of (0.628, 0.372), which are
close to the standard red light. Experimental and theoretical analyses
reveal that its luminescence mechanism primarily originates from hybrid
metal/halide-to-ligand charge transfer ( 3 M/HLCT) and cluster-centered
( 3 CC) transitions. A WLED device fabricated by combining Cu 2 I 2 (2-et-3-mepz) with commercial blue and green phosphors
achieves an Ra value as high as 93.0. Furthermore, Cu 2 I 2 (2-et-3-mepz) also exhibits excellent scintillation performance
with a light yield of 12,647 photons MeV –1 . A flexible
scintillation screen prepared using this material achieves a spatial
resolution of 9.45 lp mm –1 , demonstrating its potential
application value in X-ray imaging. This work not only achieves high-performance
WLED devices but also provides a new strategy for developing low-cost,
environmentally friendly red-emitting materials.
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