DYES AND PIGMENTS
·
2026
·
IF 3.9
Wenjing Zhang,Xinyan Yan,Xujuan Huang,Shanshan Wang,Zhaolan Zhai,Dan Wang,He Liu,Shibin Shang,Zhanqian Song
Stimuli-responsive aggregation-induced emission (AIE) materials that enable dynamic emission control and adaptive applications in dynamic information encryption and advanced anti-counterfeiting via external stimuli have attracted considerable attention. A bio-based AIE amphiphile ( CSMPANa ) was synthesized by integrating maleopimaric acid (MPA) with a α-cyanostilbene, which exhibited typical AIE characteristic and obvious solvatochromism. Importantly, the fluorescence emission of CSMPANa showed dual stimuli-responsiveness. Adding alkali caused the cyano group turned into an amide, red-shifting the fluorescence emission. Subsequent adding acid resulted in a blueshift. Furthermore, 365 nm UV light induced a [2+2] cycloaddition to form a dimer, leading to a redshift. The obvious solvatochromism and dual stimuli-responsiveness of CSMPANa were exploited for multi-level information encryption. AIE wormlike micelles were further prepared by mixing CSMPANa and cetyltrimethylammonium bromide (CTAB). The viscoelasticity and optical physical properties of CSMPANa /CTAB wormlike micelles could be modulated by varying its concentration, pH, or UV light irradiation. Additionally, the system exhibited selective recognition to 4-Nitrophenol in aqueous media with high anti-interference capability, enabling ultrasensitive visual detection (LOD = 17.29 μM). Density functional theory (DFT) calculations elucidated the sensing mechanism, revealing that the specific recognition originates from the synergistic effect of the strongest binding affinity and minimized steric hindrance of the 4-NP para-isomer. This work developed a system that is not solely dependent on organic solvents and possesses dual responsiveness.
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DIAMOND AND RELATED MATERIALS
·
2026
·
IF 5.2
Yongqin Guo,Yunqi Li,Mingxin Wang,Yuxin Xing,Zixin Tian,Shuang Zhao
A novel electrochemical sensor based on KOH-activated lotus leaf-derived carbon (KACLL) was developed to determine 4-aminophenol (4-AP) and acetaminophen (AC) simultaneously. The structure, morphology, and electrochemical properties of KACLL were characterized by Raman spectroscopy, SEM, EIS, etc. Compared with the unactivated lotus leaf-derived carbon (UCLL), KACLL has a richer pore structure and a larger specific surface area, while showing more excellent electrical conductivity and electrochemical properties. Under optimal experimental conditions, KACLL/GCE demonstrated an excellent linear response for 4-AP and AC concentrations ranging from 0.1 to 140 μmol/L, with detection limits of 0.038 μmol/L and 0.073 μmol/L, respectively. Moreover, the sensor has good stability, selectivity, anti-interference ability and reproducibility. For determining 4-AP and AC in tap water, lake water and artificial urine, the recovery rate was between 95.52% and 105.7%. The developed sensor demonstrates promising prospects for environmental monitoring and public health management.
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Xueqin Liu,Nian Wang,Yu Li,Kang Wang,Xiaomin Fan,Xiang Guo,Xinyong Gong,Ruirui Cui
A conventional high-temperature solid-state reaction was used to synthesize Eu 3+ -doped Ca 3 La 2 (BO 3 ) 4 red phosphors, aiming to overcome the low color rendering index and high correlated color temperature of WLEDs caused by insufficient red spectral components. The XRD patterns indicate that Eu 3+ incorporation does not produce detectable impurity phases, while ionic-radius and charge-balance considerations suggest that Eu 3+ preferentially occupies La 3+ sites. Under 393 nm near-ultraviolet excitation, the samples exhibit intense red emission peaking at 612 nm, attributed to the 5 D 0 → 7 F 2 transition. The optimal doping concentration is 1.3, and concentration quenching is governed by dipole-dipole interactions with a calculated critical distance of 7.19 Å. The internal quantum efficiency reaches 67.21%, and the fluorescence lifetime is 2.64 ms. Thermal stability evaluation shows that at 473 K, the emission intensity retains 70.95% of its room-temperature value, yielding an activation energy of 0.1757 eV. A neutral white LED device was fabricated by encapsulating the optimally synthesized phosphor together with commercial green- and blue-emitting phosphors onto a 365 nm chip, achieving a correlated color temperature of 4767 K and a color rendering index of 91.1. Additionally, anti-counterfeiting ink formulated from this phosphor shows bright red luminescence under UV excitation. Collectively, Ca 3 La 2 (BO 3 ) 4 : Eu 3+ serves as an efficient red phosphor with excellent thermal stability, making it highly promising for solid-state lighting and anti-counterfeiting applications.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Bao Zien,Ren Xiaohong,Rong Zeming
The selective upgrading of lignin-derived compounds into
high-value
chemicals remains a critical challenge. In this study, a series of
Ni-based catalysts supported on Hβ zeolite and modified with
secondary metals (Zn, Fe, and Cu) were synthesized and systematically
evaluated for the catalytic conversion of 4-propylguaiacol in aqueous
phase under hydrogen-free conditions. Among the catalysts studied
at 220 ° C for 2 h, Ni/Hβ delivered a conversion of 36.1%
and a phenolic selectivity of 89.6%. By comparison, NiZn/Hβ
exhibited the highest catalytic activity, achieving a conversion of
82.9% with a selectivity of 96.5%, indicating the promotional effect
of Zn incorporation. NiFe/Hβ showed a moderate conversion of
45.5% but maintained a high phenolic selectivity of 97.6%. However,
NiCu/Hβ showed almost no catalytic activity, with a conversion
of only 2.0%. Structural characterization by XRD, XPS, N 2 physisorption, H 2 -TPR, SEM, and TEM revealed that the
introduction of Zn significantly improved the dispersion of Ni species
and reduced Ni crystallite size, thereby increasing the number of
accessible active sites. In contrast, Fe incorporation altered the
catalyst structure and reduced catalytic activity, while Cu addition
induced metal aggregation and markedly suppressed catalytic performance.
The results indicate that appropriate second-metal modification can
effectively regulate the metal dispersion, microstructure, and metal–support
interactions in Ni/Hβ catalysts, thereby influencing the hydrogen
activation ability and the cleavage of Ar–CO 3 bonds.
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Materials Today Bio
·
2025
·
IF 10.2
Qifan Yang,Jing Liu,Yanwei Liu,Shun Liu,Xiaokang Wei,Yilin Yang,Weijie Zhang,Shuqi Zhang,Maosheng Zhang,Bin Liu,Xinyu Wang,Dong Zhu
Background Obesity-induced osteoporosis is a prevalent complication among obese individuals. Conventional anti-osteoporosis medications often lack therapeutic specificity and may exacerbate lipid metabolism disorders. Consequently, identifying suitable pharmacological interventions for obesity-induced osteoporosis, elucidating its underlying biological mechanisms, and developing nanodrug delivery systems with enhanced biocompatibility and targeted delivery remain significant challenges. Methods This study reveals that the pathogenesis of obesity-induced osteoporosis is primarily driven by excessive mitophagy. Notably, Exendin-4 (Ex-4) has been shown to ameliorate mitophagy and mitigate obesity-induced osteoporosis. The nanocomposite DSPE-PEG-ALN (DPA)@Neutrophil membrane (NM)@Cu-TCPP(Zn)/Ex-4 (CTZE), characterized by high biocompatibility and reactive oxygen species (ROS) responsiveness, effectively targets bone tissue, reduces ROS levels, and regulates the release of Cu 2+ , Zn 2+ , Ex-4, and Alendronate (ALN). This composite interferes with B-cell lymphoma-2 (BCL2)- Beclin-1 (BECN1) binding via the tet methylcytosine dioxygenase 2 (TET2)/ PTEN-induced putative kinase protein 1 (PINK1)/Parkin (E3 ubiquitin-protein ligase parkin) pathway, thereby promoting osteoblast differentiation and mineralization. The safety and efficacy of this nano-delivery platform were validated in a mouse model of obesity-induced osteoporosis. Conclusions In summary, our study illustrates that excessive mitophagy plays a crucial role in obesity-induced osteoporosis. Furthermore, DPA@NM@CTZE exhibits significant potential for the precise treatment of obesity-induced osteoporosis, mitigating the side effects of Ex-4, and enhancing the bone microenvironment.
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PubMed
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2020
·Vol. 36
·期 5
·816-820
·
IF 1.063
Chu Ning,Xu Shuping,Xu Weiqing
Two different kinds of configurations of 1,4-bis[2-(4-pyridyl)ethenyl]-benzene( trans -bpeb and cis -bpeb) were achieved, and a bpeb dimer was synthesized in dimethyl sulfoxide(DMSO). Compared with the previous work that synthesized the bpeb dimer or polymer in crystal with a template agent needed, the reaction occurred in a solution phase in the present method. A hand-held ultraviolet lamp(365 nm) with the power of 12 W and the Watt density of 0.35 mW/cm 2 can realize the photodimerization of bpeb, instead of the high-power mercury lamp in most previous studies. Unlike other 2+2 cycloaddition in liquid state using catalysts even noble metals, no catalysts were required here, which is cost-saving. Only the trans -pbeb can start the cycloaddition and the formation of the close J-aggregations of trans -pbeb in DMSO is a precondition for explaining the 2+2 photodimerization. The productivity for the 2+2 cycloaddition product was achieved as 55.6%.
研究领域:
有机化学
·
光化学
·
超分子化学
·
材料化学
·
合成方法学
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Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 17
·10260-10268
·
IF 10.7
Yingfen Li,Xingye Chen,Runxi Wang,Nian Zhou,Fang Huang,Jun Zhao,Zhenghua Su,Shuo Chen,Guangxing Liang
In this study, Sb2S3 was introduced into the two-step selenization process to promote bottom grain growth and reduce the surface roughness of the Cu2ZnSn(S,Se)4 light-absorber layer. The introduction of Sb doping in Cu2ZnSn(S,Se)4 can passivate bulk and interface defects and a small conduction band offset (CBO) can be found, which facilitate the improvement of heterojunction carrier transport properties. Similarly, simulations illustrated that Sb doping improved device efficiency by controlling bulk and interface defects and band alignment. This optimized method facilitated the penetration of Sb, resulting in a high-quality CZTSSe absorber layer. Ultimately, the research culminated in a significant enhancement, yielding a solar cell with an impressive efficiency of 13.11%. These findings offer new possibilities for kesterite solar cells and advance the potential of CZTSSe materials in thin film photovoltaic applications.
研究领域:
材料科学
·
光伏技术
·
半导体物理
·
薄膜太阳能电池
·
无机功能材料
·
固态电子学
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高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2017
·
IF 4.164
Zhijia Zhang,Xiaole Zhao,Yingchun Su,Defeng Xing,Xiaojun Han
We demonstrate that antibacterial agent N , N′ -[(4, 5-dihydroxy-1, 2-phenylene)bis(methylene)]bisacrylamide (OHABA) can be assembled on the surface of vinyl organosilicon nanospheres (VOSNs) by atom transfer radical polymerization (ATRP). Chemically cross-linked vinyl organosilicon cores were facilely fabricated by sol-gel method as support, which densely grafted poly-OHABA (POHABA) as shells. Antibacterial assessment test results revealed that POHABA-based core@shell structure displayed high antibacterial performance, long-term stability, and kept broad-spectrum antibacterial effect of against Gram-negative and Gram-positive bacteria.
研究领域:
材料科学
·
纳米医学
·
抗菌材料
·
高分子化学
·
表面功能化
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高影响因子
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Peng-Fei Chen,Chun-Li Hu,Ming-Yang Cao,Xue-Ying Zhang,Jiang-Gao Mao
The first carbonatotellurites, AKTeO2(CO3) (A = Li, Na), have been successfully synthesized by using boric acid as the mineralizer. AKTeO2(CO3) (A = Li, Na) crystallize in the monoclinic space group P21/n (no. 14), and their structures exhibit the novel zero-dimensional (0D) [Te2C2O10]4– clusters, in which two [TeO4]4– groups form a [Te2O6]4– dimer via edge-sharing, with each side of the dimer attached by a [CO3]2– group via a Te–O–C bridge. The alkali metal cations occupy the voids between the 0D clusters and maintain the charge balance. The ultraviolet–visible–near-infrared diffuse reflectance spectra show that the short absorption cut-off edges of LiKTeO2(CO3) (LKTC) and NaKTeO2(CO3) (NKTC) are 248 and 240 nm, respectively, and LKTC exhibits the largest experimental band gap (4.58 eV) among all of the tellurites containing the π-conjugated anionic groups reported. Theoretical calculations revealed that they exhibit moderate birefringences of 0.029 and 0.040@1064 nm, respectively.
研究领域:
无机化学
·
材料科学
·
固态化学
·
光学材料
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高影响因子
Acta Crystallographica Section C-Structural Chemistry
·
2018
·Vol. 74
·期 9
·1058-1067
·
IF 8.678
Tan X.-J.,Wang D.,Lei X.-G.,Chen J.-P.
A global glide disorder has been discovered during an X-ray investigation of the crystal structure of (Z)-2-[(E)-(4-methoxybenzylidene)hydrazinylidene]-1,2-diphenylethanone (MHDE, C22H18N2O2) at room temperature. In another crystal, however, such disorder disappears (still at room temperature). Even though the disorder may be partly due to the poor quality of the harvested crystal, the structure can shed light on the nature of disorder. With the help of quantum chemical calculations, it is found that the global disorder seems to be connected with the need for stabilization of the somewhat rigid but mobile and unstable molecular structure. The most relevant feature driving the packing of the disordered structure concerns the slight perturbations (such as glide) of two or more disorder components (fractional occupancies) distributed throughout the crystal.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·122374
·
IF 7.5
Feng Chen,Xiang Xia,Wei Chen,Wei Liu,Xinxin Liao,Lei Xiong,Yanqiao Jin
Refining lignin and its derivatives into biofuels and fine chemicals via catalytic transfer hydrogenation (CTH) has gained significant attention for its potential in utilizing renewable resources and reducing fossil fuel dependence. Herein, a series of bimetallic Cu-Co catalysts with varying metal ratios are synthesized via a facile hydrothermal method and successfully applied in the efficient CTH of the α-O−4 model compound benzyl phenyl ether (BPE) and corncob lignin. Cu 0.5 Co 1 @CN has the best performance among catalysts with different CuCo ratios due to the formation of the CuCo 2 O 4 phase which provides more acid sites and hydrogen adsorption/desorption sites. Under the reaction conditions of 190 °C in isopropanol, the Cu 0.5 Co 1 @CN catalyst achieves the complete conversion of BPE to cyclohexanol and toluene, and demonstrates excellent CTH performance towards other α-O−4 and β-O−4 model compounds. This catalyst simultaneously enables the demethoxylation and hydrogenation of phenolic compounds like guaiacol. Furthermore, Cu 0.5 Co 1 @CN efficiently converts corncob lignin, producing a high proportion of phenolic compounds in the resulting liquid (88.26%), while preventing the aromatic hydrocarbons from being hydrogenated. Overall, this work provides a novel and effective strategy for transforming lignin into high-value products.
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Plant Communications
·
2026
·
IF 13.7
Wenkai Yan,Yaogui Zhou,Bei Jia,Jiangshuai Niu,Shihuai Jin,Zhuoning Zhao,Zhongxin Guo
RNA interference (RNAi)-mediated antiviral immunity is an evolutionarily conserved mechanism preventing virus infection in eukaryotes. In recent studies, we developed a sensitized genetic screen to identify antiviral RNAi-defective ( avi ) mutants for uncovering components of the antiviral pathway in Arabidopsis . We revealed that AVI2 is a novel regulator that enhances the biogenesis of viral small interfering RNAs (vsiRNAs) to promote small-RNA-based antiviral immunity. However, the molecular mechanisms that modulate the efficiency of RNAi-mediated antiviral immunity remain largely unclear. Here, we identified the avi4 mutant using the same genetic screen. Mapping by sequencing identified a T-DNA insertion in LPEAT2 as the causal mutation for avi4 , and this result was confirmed through analysis of an allelic lpeat2 mutant and complementation analysis. LPEAT2, a lysophospholipid acyltransferase in Arabidopsis , functions in the biosynthesis of phospholipids (especially phosphatidylethanolamine [PE]) and modulation of the autophagy pathway. We revealed that LPEAT2, but not its homolog LPEAT1, interacts with AVI2 to enhance RDR1/6-dependent vsiRNA biogenesis. Interestingly, LPEAT2 also interacts with and stabilizes the core autophagy component ATG8a and promotes autophagy before or after viral infection. Notably, overexpression of ATG8a enhances vsiRNA production and antiviral resistance, which is dependent on LPEAT2 function and can be repressed by VSR 2b. Therefore, our research demonstrates that AVI4 (LPEAT2) is a novel regulator of RNAi-mediated antiviral immunity, it cooperates with AVI2 and ATG8a to enhance vsiRNA biogenesis for robust antiviral defense in Arabidopsis .
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高影响因子
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