FOOD HYDROCOLLOIDS
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2023
·
IF 10.7
Danfei Liu,Yunfei Zhong,Xiaoxuan Li,Yumei Pu,Siyuan Chen,Changfan Zhang
This study presented a novel indicator film for monitoring chicken freshness based on polyvinyl alcohol (PVA) and chitosan (CS) incorporated with a natural dye of anthocyanin loaded on MOFs (UiO-66 and UiO-66-Br) carriers. The characterization results of UiO-66/A and UiO-66-Br/A dyes showed that most anthocyanins bind to MOFs by intermolecular forces without disrupting the MOFs structure. Different dyes (anthocyanin, UiO-66/A, UiO-66-Br/A) with the same effective dye content were added into PVA/CS matrices to form PVA/CS/A (PCA) film, PVA/CS/UiO-66/A (PCUA) film and PVA/CS/UiO-66-Br/A (PCBA) film. With the addition of UiO-66/A and UiO-66-Br/A, the tensile strength and elongation at break of indicator films decreased. Small amounts of dye migration were observed in acidic and neutral food simulants for PCUA and PCBA films, while no dye migration was observed in alcoholic food simulants. PCUA and PCBA films exhibited higher sensitivity for detecting ammonia vapor, with a detection limit of 24.39 ppm for PCBA films. When all films were used to monitor changes in chicken breast freshness, PCBA films presented more accurate color changes than other films. The BP neural network-based prediction model utilizing the color change of PCBA film effectively predicted the freshness of chicken breast.
研究领域:
食品科学
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材料科学
·
化学工程
·
人工智能
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DOI
高影响因子
Functional Materials Letters
·
2024
·
IF 1.2
Zhuqing Sun,Yongxia Li,Haowen Bai,Shenghang Jin,Haibo Zhang,Guanying Cao
All inorganic lead halide cesium perovskite quantum dots (QDs) have attracted much attention due to their excellent luminescence properties, but further development is restricted by their stability and the existence of toxic element lead. In this paper, F/Mn-doped CsPb ( Br / Cl ) 3 QDs glass was prepared by melt quenching and heat treatment, with reduced Pb content effectively. The result shows that the spectrum of the QD glass is adjustable between 450 nm and 515.4 nm by changing the feeding ratio of Mn-Pb ion and heat treatment temperature. Moreover, the indraught of Mn 2 + effectively improves the PLQY of CsPb ( Br / Cl ) 3 QDs glass and serves as a red-emitting. The prepared composites not only maintain good fluorescence characteristics, but also greatly improve the stability of QDs. And successfully coupled with blue LED chips to synthesize WLED, Under 20 mA current, the color coordinate is (0.3446, 0.3389).
研究领域:
材料科学
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纳米技术
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光电子学
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固体物理
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无机化学
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DOI
高影响因子
Inorganic Chemistry Frontiers
·
2019
·Vol. 6
·期 11
·3133-3139
·
IF 5.934
Ya-Ping Gong,Chun-Li Hu,Yun-Xiang Ma,Jiang-Gao Mao,Fang Kong
Two new halogenated selenites, namely, Pb2Cd(SeO3)2X2 (X = Cl and Br), were synthesized via mild hydrothermal reactions. The isomorphic compounds crystallized in a noncentrosymmetric (NCS) and chiral space group. Their three-dimensional (3D) structures were formed by alternating undulated [Pb2(SeO3)X]∞+ cationic layers and flattened [Cd(SeO3)X]∞− anionic layers. Thermal analyses revealed that the compounds can remain stable up to 500 °C. The SHG efficiencies of Pb2Cd(SeO3)2X2 (X = Cl and Br) are much higher than those of commercial KDP (KH2PO4), and they are phase-matchable. UV-vis-NIR diffuse reflectance spectra revealed that the two compounds exhibited wide optical band gaps. The laser damage thresholds of Pb2Cd(SeO3)2X2 (X = Cl and Br) were measured to be about 38.5 and 35.7 times higher than that of AGS (AgGaS2). Their calculated birefringences were large enough to accomplish phase matching in SHG progression. The SHG density analyses disclosed that the lone pair electrons of the SeO3 and PbOnXm units made major contributions to their nonlinear efficiencies.
研究领域:
材料科学
·
晶体学
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DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2026
·
IF 3.8
Hongwei Xu,Yang Chen,Leilei Kuai,Chengjun Liu,Jianjun Zhao,Quan Liu,Bo Wei,Junpeng Xue,Zutao Fan
Metal halide perovskite nanocrystals (PNCs), particularly all-inorganic CsPbX 3 (X = Cl, Br, I), exhibit exceptional optoelectronic properties, positioning them as revolutionary materials for LEDs, displays, and photodetectors. However, their commercialization is impeded by environmental instability under moisture, heat, and light. To address this, we introduce a solvent-induced surface rheological engineering (SISRE) strategy to fabricate super-hydrophobic CsPbX 3 -PS composite membranes inspired by the lotus leaf effect. Key innovation lies in controlled spraying of a THF/ethanol mixture (3:1 v/v) onto the membrane surface. THF selectively dissolves surface PS to induce micro/nano hierarchical roughness, while ethanol triggers rapid polymer re-solidification. By modulating spray passes (5–15 cycles), we achieved tunable hydrophobicity with contact angles increasing from 70° to >140° (Cassie-Baxter state), while maintaining PLQY∼72% for CsPbBr 3 PNCs membrane. The optimized super-hydrophobic membrane (12 spray cycles) nearly exhibited a 2.7-fold enhancement in water stability (PLQY decay rate: 1.65%/day vs. 4.46%/day for untreated films). In addition, when applied as a down-conversion layer on blue LEDs (λ peak = 452 nm), the device achieved 111% NTSC color gamut coverage (98% Rec.2020) with CIE coordinates (0.328, 0.288) and CCT = 5722 K. This work provides a scalable, appliable route to concurrently enhance environmental stability and optoelectronic performance of PNCs.
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高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2026
·
IF 5.9
Litao Zhang,Ping He,Jiang Wu,Naichao Chen,Xingyu Cao,Wenchu Yuan,Zhengyu Liu,Xiao Zhang,Runyao Ma
A Zr/Br-doped core-shell UIO-type MOF optimized for efficient mercury removal. • Synergistic interaction between Zr 4+ and Br − formed dual-functional “oxidation-fixation” active sites. In coal-fired power plants, mercury is released into the atmosphere along with flue gas during the combustion of coal, posing serious threats to both the environment and human health. In this work, a novel core-shell structured Zr/Br dual-doped metal-organic framework adsorbent UIO-type-Zr-Br was successfully synthesized using a multi-step templating strategy with precise control of structural modulation. Through a combined strategy of ZIF-67@ZIF-8 NPs nano-etching and Zr/Br doping, the optimal sample UIO-15 exhibited excellent mercury removal performance, achieving over 98.8% removal efficiency at 120 °C. The UIO-15 adsorbent also demonstrated strong resistance to coal combustion flue gas interference components such as SO 2 (600 ppm) and NO (600 ppm), maintaining nearly 80% efficiency. Furthermore, long-term dynamic tests showed that UIO-15 retained approximately 95% efficiency after 10 h of continuous operation. The Zr 4+ and centers maintained the oxidation state throughout the reaction, indicating the role as structural stabilizers rather than redox-active sites, while Br − participated in the oxidation of elemental mercury Hg 0 to form stable HgBr 2 , which was subsequently immobilized within the MOF framework; Mercury removal was effected by dual-functional oxidation-fixation centers formed via synergistic Zr 4+ -Br - interactions. These findings suggest that UIO-15 is a promising candidate for practical application in mercury removal systems for coal-fired power plants. Download: Download high-res image (363KB) Download: Download full-size image
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DOI
高影响因子
PLANT PHYSIOLOGY AND BIOCHEMISTRY
·
2026
·
IF 6.2
Su Li,Qi Jiang,Yong Qiang Gao,Ren Fang Shen,Qing Song Zheng,Xiao Fang Zhu
Aluminum (Al) toxicity in acidic soils significantly limits crop productivity by inhibiting root growth and nutrient uptake. Brassinosteroid (BR), a key plant hormone, has emerged as a crucial regulator of stress tolerance. This study investigates the role of BR in mitigating Al toxicity in rice ( Oryza sativa ) and explores the interplay between BR and gibberellic acid (GA) under Al stress. Our results show that Al stress rapidly elevates endogenous BR level in rice roots, which alleviates Al-induced root growth inhibition. Specifically, 0.01 μM BR achieves a maximum remission rate of approximately 20% for Al-induced root growth inhibition. BR application significantly reduced Al accumulation in root tips (by approximately 25%) and cell walls, particularly by inhibiting the overexpression of XYLOGLUCAN ENDO TRANSHYDROLASE/GLUCOSYLASE 5/9/11/19 ( OsXTH5/9/11/19 ), which reduces Al binding in hemicellulose fractions and upregulating Cellulose synthase A catalytic subunit 4/7/9 ( OsCesA4/7/9 ) to enhance cell wall’s barrier function against Al. BR also modulates hemicellulose composition and suppresses the expression of the Al transporter gene Nramp aluminum transporter 1 ( OsNRAT1 ), thereby reducing Al uptake into root tip cells. Additionally, BR mitigates Al toxicity via the GSK3/SHAGGY-Like KINASE 2 ( OsGSK2 )-mediated BR signaling pathway: OsGSK2 overexpression lines ( OsGSK2-OE ) exhibit enhanced Al resistance, while RNAi lines ( OsGSK2-RNAi ) show increased Al sensitivity. Furthermore, BR upregulates key expansin genes ALPHA-EXPANSIN 1/4/7 ( OsEXPA1/4/7 ) and BETA-EXPANSIN 2 ( OsEXPB2 ), which promotes root growth under Al stress. Notably, under Al stress, BR enhances endogenous GA levels through the transcription factor BRASSINAZOLE RESISTANT 1 ( OsBZR1 ): Al represses OsBZR1 expression, which is rescued by BR treatment. This process involves upregulating GA biosynthetic genes such as OsGA20OX , restoring Al-suppressed gene expression, and mitigating Al-induced OsGA2OX overexpression to maintain GA homeostasis. Exogenous GA treatment mimics BR’s alleviatory effects, highlighting critical crosstalk between the BR and GA pathways. This study provides novel insights into BR-mediated Al detoxification, revealing a key BR-GA interaction that enhances Al tolerance in rice and offers potential for improving crop resilience in acidic soils.
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DOI
高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 28
·e73876
·
IF 2.3
Tao Liu,Huichao Zhang,Bo Huang,Shitong Li,Bin Liu
Mn 2+ -doped perovskite nanocrystals (NCs) have attracted extensive research interest and have been synthesized with sizes in the strong confinement regime. Nevertheless, the size of the doped NCs is still not as small as that of undoped perovskite NCs. To address this, we develop a ligand-assisted reprecipitation method incorporating ultrasonication to synthesize Mn 2+ -doped CsPb(Cl/Br) 3 NCs. The obtained spherical NCs have an average size of 3.1 nm and exhibit orange photoluminescence originating from the 4 T 1 to 6 A 1 transition of Mn 2+ . The luminescent properties correlate with the volume ratio of MnCl 2 to PbBr 2 precursors. Increasing the ratio enhances the Mn 2+ -related emission, while excessive doping leads to photoluminescence quenching. When the precursor ratio is reduced to 1:1, the NCs exhibit both intrinsic exciton and Mn 2+ -related emission, with some particles adopting cubic or rod-like morphologies. Prolonged ultrasonic treatment does not significantly shift the emission peak of the NCs, but promotes superlattice assembly in small-sized NCs, showing a center-to-center separation of 4.2 nm. Subsequently, altering the precursor addition sequence to introduce MnCl 2 last during ultrasonic preparation yields simultaneous formation of spherical and cubic NCs. Finally, post-synthesis doping of Mn 2+ is achieved. Formation of small spherical NCs confirms hypothesis that MnCl 2 induces morphological transformation of NCs. Graphical Ultrasonication-assisted ligand-assisted reprecipitation delivers 3.1 nm Mn 2+ -doped CsPb(Cl/Br) 3 nanocrystals with orange emission from the Mn 2+ 4 T 1 → 6 A 1 transition.
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DOI
高影响因子
OPTICAL MATERIALS
·
2025
·
IF 4.2
Qi Chen,Fang Lei,Ying Shi
Perovskite light-emitting diodes (PeLEDs) employing CsPbX 3 nanocrystals (NCs) face persistent challenges in balancing emission efficiency and spectral stability due to surface halide vacancies, which trigger nonradiative recombination, halide phase segregation, and self-doping effects. In this work, we address these limitations by introducing 3,5-dicarboxyphenylboronic acid (3,5-DA) as a multifunctional bidentate ligand additive. The unique coordination architecture of 3,5-DA, featuring multiple chelating groups, enables strong binding affinity to perovskite NC surfaces. This interaction effectively passivates halide vacancies while suppressing ion migration and defect formation. The optimized CsPb(Br/I) 3 NCs exhibit enhanced stability and suppressed nonradiative losses, enabling high-performance white LEDs (WLEDs). At a driving current of 10 mA, the fabricated WLEDs demonstrate a luminous efficiency of 10.32 lm·W −1 , a CIE coordinate of (0.3379, 0.3391), a correlated color temperature (CCT) of 5260 K, and an external quantum efficiency (EQE) of 6.48 %. This work provides a ligand engineering strategy to concurrently resolve efficiency-stability trade-offs in PeLEDs.
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DOI
高影响因子
TALANTA
·
2025
·
IF 6.1
Liwu Gan,Xiaoying Feng,Suxin Zhou,Jinglin Chen,Juan Zheng,Gangfeng Ouyang
Functionalized metal organic framework (MOF) and covalent organic framework (COF) composites (MOF@COFs) with complementary advantages, hierarchical pores, pre-designable and tunable structures, are expected for remarkable adsorption of organic pollutants, yet to be explored. Herein, a kind of MOF@COF composite was synthesized by combining the parent MIL-68(In) and COF–V (10 %-MIL-68@COF–V), characterized with well-retained crystallinity and hierarchical pores. The parent materials and as-prepared MIL-68@COF-Vs were further fabricated as solid phase microextraction (SPME) coatings to study their extraction performance for Cl/Br-substituted organic pollutants. The 10 %-MIL-68@COF–V coated fiber exhibited the most outstanding enrichment performance for Cl/Br-substituted organic pollutants mainly due to the synthetic advantages, which was 1.1–196.5 times superior than that of the commercial PDMS coating. By combining it with gas chromatography-mass spectrometry (GC-MS), an ultrasensitive method was established, exhibiting wide linear ranges (1–5000 ng L −1 ), low LODs (0.17–0.29 ng L −1 ), and good reproducibility. The trace Cl/Br-substituted organic pollutants in marine water samples were successfully detected, verifying the practicability of the developed method in environmental monitoring.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yuzhu Qian,Qing Zhang,Lijuan Chen,Yaoyong Dong,Ting Song,Yong Pei,Xianyou Wang,Xiongwei Wu,Xuejun Zheng,Wenyuan He,Bei Long
Developing insertion-type anodes is essential for designing high-performance “rocking chair” zinc-ion batteries. BiOCl shows great potential as an insertion-type anode material for Zn 2+ storage due to its high specific capacity and unique layered structure. However, the development of BiOCl has been significantly hampered by its poor stability and kinetics during cycling. In this study, Br-doped and carbon-coated BiOCl ultrathin nanosheets (Br-BiOCl@NC) are synthesized as high-performance anodes. The ultrathin nanosheet morphology facilitates Zn 2+ /H + transfer and the Br doping reduces the Zn 2+ /H + diffusion barrier. Additionally, the carbon coating enhances the electronic transfer. Furthermore, an insertion-conversion mechanism involving H + and Zn 2+ storage is revealed by ex-situ tests. Therefore, Br-BiOCl@NC exhibits a high discharge capacity of 174 mA h/g at 500 mA/g without capacity degradation after 1000 cycles. The Br-BiOCl@NC//MnO 2 full cell presents a discharge capacity of ≈ 120 mA h/g at 200 mA/g. This work offers valuable insights for the design of high-performance insertion-type anode materials in zinc-ion batteries.
研究领域:
材料科学
·
电化学
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产品关联
DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
·
2023
·Vol. 10
·期 11
·3319-3325
·
IF 7
Jing-Li Qi,Jiajing Wu,Yue Guo,Zhong-Ping Xu,Wenlong Liu,Sheng-Ping Guo
The emerging organic–inorganic hybrid metal halides feature unique optical and electronic properties, are easily grown and have flexible crystal structures, making them a class of promising next-generation nonlinear optical (NLO) and ferroelectric materials. Herein, we successfully synthesized two centimeter-level zero-dimensional copper halide organic–inorganic hybrids (C20H20P)CuX2 (X = Cl, Br) that are crystallized in the monoclinic noncentrosymmetric P21 space group. Their structures contain rare quasi-linear [CuX2]– anions and [C20H20P]+ cations. (C20H20P)CuCl2 and (C20H20P)CuBr2 crystals show phase-matchable NLO effects around 1.1 and 0.87 times that of benchmark KDP, respectively. These (C20H20P)CuX2 materials are the first NLO-active examples in the hybrid copper(I) halide family containing a quasi-linear CuX2 unit.
研究领域:
材料科学
·
光学
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DOI
高影响因子
Small
·
2024
·Vol. 20
·期 37
·2400549
·
IF 13
Yaoguo Shen,Mingliang Ding,Gang Chen,Yingjie Luo,Sangen Zhao,Junhua Luo
A large optical anisotropy is the most important parameter of birefringent crystals. Integrating π-conjugated groups with large polarizable anisotropy into target compounds is a common strategy for constructing brilliant birefringent crystals. However, the key problem is to enhance the density of the birefringence-active units and further arrange them parallelly. In this study, three novel birefringent crystals, C 9 H 7 NBrX (X = Cl, Br, NO 3 ), are successfully synthesized by introducing a new birefringence-active [C 9 H 7 NBr] + unit. Interestingly, these compounds feature similar layered structures but exhibit different optical anisotropies at 550 nm (0.277 for C 9 H 7 NBrCl, 0.328 for C 9 H 7 NBrBr, and 0.401 for C 9 H 7 NBrNO 3 ) owing to the different anions in them. Particularly, the small trigonal planar NO 3 anions perfectly fill the interstices of the π-conjugated [C 9 H 7 NBr] + groups with large optical anisotropy, with the resulting compound C 9 H 7 NBrNO 3 showing superior optical properties compared to the others. The above findings provide strategies for designing new optical materials with large birefringence by matching birefringence-active groups of different sizes. Additionally, a new theory for predicting and comparing the polarizability anisotropy of compounds is proposed, which would guide in exploring large birefringent crystals.
研究领域:
材料科学
·
光学
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产品关联
DOI
PubMed
高影响因子
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