ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2021
·Vol. 28
·期 42
·59665-59672
·
IF 4.223
Zhang Ning,Liao Yihong,Xie Lianjie,Zhang Zhixiang,Hu Wei
The red imported fire ant is one of the world’s most devastating invasive species, adversely affecting humans, wildlife, crops, and livestock. To control infestations, chemical pesticides are deployed extensively around the world. However, their extensive use has led to negative effects on the environment and human health. Essential oils, which are safe and ecofriendly, can potentially be used as alternatives to chemical pesticides. In this study, grapefruit essential oils were used as fumigant agents to control red imported fire ants. The crude grapefruit oil (GO1) contained 28 compounds, and the concentrated grapefruit oil (GO2), which was refined from GO1 by vacuum distillation, contained 20 compounds. D-Limonene was the dominant constituent in both GO1 (70.1%) and GO2 (73.96%), and other important constituents included β-pinene, α-pinene, β-phellandrene, octanal, d-carvone, α-terpineol, and linalool. Both the essential oils and their individual constituents (α-pinene, α-terpineol, β-phellandrene, octanal, and d-carvone) showed strong lethal fumigant effects against workers. Workers were more susceptible to GO2 than GO1, and octanal was more toxic to workers as compared with the other four constituents. When antennas of workers were treated with the two oils or the five constituents, their walking and gripping abilities were significantly suppressed, and there was an obvious bending or breaking phenomenon on the sensilla of the antennas. Fumigant activity by grapefruit essential oils and their main compounds were associated with their effects on the walking and gripping behavior of workers, and this confirmed that grapefruit essential oil is a promising, ecofriendly, and safe fumigant for the control of red imported fire ants.
研究领域:
生态学
·
昆虫学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
PHARMACEUTICAL CHEMISTRY JOURNAL
·
2022
·Vol. 56
·期 3
·356-360
·
IF 1.063
Yang Meizhu,Lai Weihong,Li Junjian,Ye Lianbao
Phloroglucinols of Dryopteris fragrans (L.) Schott plant show strong antifungal activity. In previous work, we isolated a wide range of phloroglucinols from the plant and found that pseudoaspidinol of D. fragrans and its structural modifications (methylphloroglucinol derivatives) showed stronger antifungal activity and confirmed that the butyryl group of these compounds accounted for this activity. In this study, we designed a series of phloroglucinol derivatives ( A1–A9) and methylphloroglucinol derivatives ( B1–B9) by introducing acyl groups with diverse carbon numbers in the C-2 position, synthesized these compounds, and evaluated the anti-dermatophyte activity of compounds A1–A5 and B1–B5 on Trichophyton rubrum and Trichophyton mentagrophytes fungal species. The results showed that compound A5 exhibited the strongest activity. These compounds can be used as leads for the development of new antifungal agents.
研究领域:
药理学
·
有机化学
·
植物化学
✓ 已验证
DOI
高影响因子
Nanoscale
·
2025
·
IF 5.1
Bo Li,Lipan Luo,Yujia Liu,Xiaohan Zhou,Yuyu Zhang,Lishuai Song,Nan Liu,Qing Tang,Zequan Li
Pt/TiO2 photocatalysts were synthesized using incipient wetness impregnation followed by oxidative and/or reductive thermal treatments. The loading dimensions of Pt elements on the TiO2 surface (PtP, PtSA, and PtC) were controlled by varying the impregnated solution. Experimental results demonstrate that PtC with intermediate size exhibits the highest photolysis rate under 300W xenon lamp irradiation, achieving a hydrogen yield of 11.42 mmol g^-1 h^-1 and an apparent quantum yield of 40.65%. Similarly, Ru/TiO2 and Ir/TiO2 photocatalysts prepared under the same conditions exhibited the same pattern. Photoelectrochemical tests reveal that PtC/TiO2 has the narrowest band gap, the highest interfacial charge transfer capacity, and the greatest carrier separation efficiency. DFT calculations indicate that PtC/TiO2 has the most suitable d-band center, resulting in a close-to-zero ΔGH* value of 0.05 eV. This optimal value significantly balances the adsorption and desorption of hydrogen intermediates (H*) during the photocatalytic hydrogen evolution (PHE) reaction. This study provides new insights into the preparation of precious metal-loaded photocatalysts.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Fengyu Zhang,Yanping Yang,Qian Wang,Xiaomeng Chen,Lulu Xie,Xintao Li,Dianqing Li,Junting Feng,Xue Duan
When single-atom catalysts are oriented toward practical applications, in addition to balancing the seesaw between activity and selectivity, the capability of thermal management also merits attention. Herein, we proposed a facility approach that, based on active Pd in the state of a single atom, tunes the guest Cu size to simultaneously enhance the effect of d-electron domination and the heat transfer behavior in microregions. Along with the Cu size in an order of magnitude increase, more delocalized electrons were generated and transferred to isolated Pd sites, with the d band center shifting from 1.438 to 1.052 eV, closer to the Fermi level. Simultaneously, more long-range ordered lattices are much favorable for transferring in situ generated thermally phonons with the diffusivity surging from 12.36 to 103.49 mm2/s. The optimized Pd1Cu-SAA catalyst exhibited state-of-the-art performance in acetylene hydrogenation, achieving full conversion at 140 °C, with 95.3% selectivity and good stability in the test period.
研究领域:
催化化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
3 Biotech
·
2021
·Vol. 11
·期 4
·1-9
·
IF 2.406
Ren Runxian,Zhai Lixin,Tian Qiaopeng,Meng Di,Guan Zhengbin,Cai Yujie,Liao Xiangru
Diphenyl phosphate (DPHP) has been increasingly detected in environmental samples, posing a potential hazard to humans and other organisms and arousing concern regarding its adverse effects. Biological degradation of DPHP is considered a promising and environmentally friendly method for its removal. In this study, the bagdpd gene was mined from the Bacillus altitudinis W3 genome and identified as a glycerophosphodiester phosphodiesterase by bioinformatics analysis. The enzyme was expressed and its biochemical properties were studied. When using bis(4-nitrophenyl) phosphate as substrate, enzyme activity was optimal at 55 °C and a pH of 8.5. The enzyme remained stable in the pH range of 8.0 − 10.0. The rBaGDPD enzyme degraded DPHP and the reaction product was identified as phenyl phosphate by LC–MS. This is the first report of a glycerophosphodiester phosphodiesterase exhibiting hydrolytic activity against DPHP. This study demonstrated that rBaGDPD could have the potential for bioremediation and industrial applications.
研究领域:
环境科学
·
微生物学
·
生物化学
✓ 已验证
DOI
PubMed
高影响因子
ChemistrySelect
·
2025
·Vol. 10
·期 39
·e04041
·
IF 2
Xintong Huan,Mingxin Jiang,Can Gao,Meixuan Liu,Xiaohuan Sun,Jie Han
Enantioselective sensing of 3,4-dihydroxyphenylalanine (DOPA) enantiomers is highly significant in biology and pharmaceutics, yet developing sensors with high enantioselectivity and analyte-specific output signals remains challenging. In this study, we constructed an L-cysteine (Cys)-Fe 2+ nanozyme through self-assembly of L-Cys and Fe 2+ . This nanozyme exhibited efficient peroxidase-like activity, with a K cat value of 2.1 × 10 −9 M·s −1 ·µg −1 toward 3,3“,5,5”-tetramethylbenzidine (TMB). When using D/L-DOPA as a substrate, we observed higher catalytic efficiency for L-DOPA than for D-DOPA, with a selectivity factor of 1.6. Mechanistic studies revealed that this enantioselectivity originates from the preferential adsorption of D-DOPA over L-DOPA on the nanozyme surface, which impedes the oxidation kinetics by blocking substrate access to the active sites. These chirality-specific changes induced in UV–vis absorption during catalysis enabled the establishment of analyte-specific calibration curves for D-DOPA, L-DOPA, and enantiomeric compositions in D/L-DOPA mixtures, achieving highly enantioselective sensing of DOPA enantiomers. This sensing platform demonstrated high sensitivity (limit of detection: 3.6 µM), excellent selectivity, and significant potential for practical applications. These findings provide novel insights for developing superior enantioselective sensors with high accuracy. Graphical Through the self-assembly of L-cysteine (Cys) and Fe 2+ , we constructed a novel chiral L-Cys-Fe 2+ nanozyme. This nanozyme achieved high enantioselectivity in discriminating 3,4-dihydroxy-D/L-phenylalanine (D/L-DOPA) due to enantioselective adsorption. This approach constitutes a promising new platform for reliable enantiomer detection.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Optical Materials
·
2025
·
IF 3.8
Zhao-Xing Jin,Hong-Sheng Gao,Xiao-Qiang Huang,Zhi-Hui Ren,Zheng-Hui Guan
Luminescent organic molecules play a pivotal role in the advancement of organic light-emitting diode (OLED) materials. Herein, a class of acenaphthylene-cored D–π–A-type molecules were designed and synthesized (isolated yields >85% for each step), wherein the acenaphthylene served as a conjugated bridge integrating a benzoxazole acceptor moiety and a triarylamine donor unit. Computational results showed a spatially segregated distribution of the frontier molecular orbitals, which achieved a small singlet–triplet energy gap (ΔEST = 0.1 eV). The corresponding OLED device emitted green light at 543 nm. Furthermore, this work represents the first combined application of acenaphthylene and benzoxazole in luminescent organic materials.
研究领域:
材料科学
·
有机电子学
·
光电功能材料
·
理论与计算化学
✓ 已验证
DOI
高影响因子
MATERIALS SCIENCE FORUM
·
2010
·
IF 0
Xin Wang,Yuan Yuan Dou,Mei Shan Pei,Xin De Tang
Biocompatible and biodegradable synthetic materials have attracted considerable attention during the past two decades. In this work, a series of amphiphilic triblock copolymers containing D-galactopyranose were synthesized by atom transfer radical polymerization (ATRP). The macroinitiator was prepared by the esterification between poly(ethylene glycol) monomethyl ether with a number-average molecular weight of 1200 g/mol (MeOPEO-1200) and 2-bromoisobutyryl bromide. The sugar-bearing monomer, 6-O-methacryloyl-1,2;3,4-di-O-isopropylidene-D-galactopyranose (MAIPG) was polymerized using PMDETA/CuBr as catalytic system and anisol as solvent. The chemical structure and composition of the resultant polymer MeOPEO-b-PMAIPG were verified by 1H NMR. The molecular weights and their polydispersities were characterized by gel permeation chromatography (GPC). The results indicate that the polymerization follows the mechanism of ATRP. The amphiphilic copolymers can self-assembly to from micelles with PMAIPG as the core and PEO as the corona, which have potential applications as biomaterials or controlled release drug delivery systems.
研究领域:
高分子化学
·
生物医学工程
·
药物递送
·
材料科学
·
大分子化学
✓ 已验证
DOI
IEEE SENSORS JOURNAL
·
2024
·Vol. 24
·期 13
·21276-21285
·
IF 4.3
Xinghua Shi,Anxue Zhang,Guoqing Han,Yuemeng Yin,Wenchao Chen
Highway bridges are primarily reinforced concrete structures. They have multilayer steel mesh sheets, corrugated pipes, and steel strands inside. As a result, detecting defects in bridge concrete structures requires high technical expertise and can be challenging. This article presents a new device of ground-penetrating radar (GPR) designed specifically for highway bridge inspection. It employs antenna array technology, multichannel radar control technology, and real-time 3-D data acquisition and display technology to achieve reliable detection of various concrete structures commonly found in bridges. Using a 1.3 GHz central frequency antenna array and a multichannel control unit, the system enables simultaneous surveying along five lines, the detection depth can exceed 600 mm in concrete. This significantly enhances detection efficiency. By employing specialized software processing, the detection results are presented in a specific and visually comprehensive 3-D format. Moreover, the system provides 3-D slice images from any position and direction, facilitating the interpretation of detection results for various targets, including reinforcement layout, protective layer thickness, corrugated pipes, steel strands, and other quality defects. It provides advanced and reliable technical means for construction quality control and bridge health monitoring of highway bridges. The results indicate that the device performs well not only in controlled experimental environments, but also in real-world bridge structure environments.
研究领域:
土木工程
·
结构健康监测
·
无损检测
·
交通基础设施
✓ 已验证
DOI
高影响因子
Nature Chemical Biology
·
2026
·
IF 15.8
Liu Jiapeng,Han Jian,Wang Yupu,Song Mengjiao,Zhu Jianbei,Liang Yu,Chen Fangyi,Liu Zhike,Yan Xinwen,Wang Ziyuan,Peng Weicheng,Tu Ruibo,Zhang Zihan,Zhong Binglin,Sun Hao,Yin Junyi,Chang Jingbo,Long Yuying,Men Yinghui,Tsai Shang-Jui,Wang Shanshan,Susanto Teodorus Theo,Qiang Albert,Chen Yong,Pan Weijun,Lin Yizhu,Wu Wei,Shen Yidong,Li Jiefu,Wan Yue,Han Shuo
Understanding the spatial organization of biomolecules in living organisms is a central but challenging goal in biology. Here, we introduce peroxidase reactions activated by D -amino acids (PRADA), which uses an engineered oxidase to convert nonproteinogenic D -amino acids into H 2 O 2 for in situ activation of a genetically fused peroxidase. PRADA enables versatile proximity-based chemistries, including protein labeling, RNA labeling and functional polymer assembly, with minimal toxicity and background. We demonstrate that PRADA is broadly applicable inside living organisms, including flies, worms, fish and mice. By further leveraging the unique RNA reactivity of PRADA, we developed a mutational profiling sequencing strategy for spatiotemporally resolved mapping of RNA secondary structure. Application of this multifaceted PRADA platform in a mouse xenograft model offered insights into its mitochondrial proteome, transcriptome and RNA structurome, revealing RNA folding as a regulatory mechanism in mitochondrial gene expression. Collectively, PRADA holds promise to uncover the intricate organization of biomolecules in vivo.
✓ 已验证
DOI
高影响因子
Journal of Functional Foods
·
2026
·
IF 3.9
Ming Nie,Chenhao Liu,Xiaozhen Gu,Hui-Li Wang
Peony seed oil attenuated selected behavioral deficits in D-gal-treated male mice. • PSO-treated fields showed qualitatively more orderly hippocampal morphology. • PSO lowered serum MDA at all doses; SOD increased only at the medium dose. • PSO altered hippocampal synapse-related mRNAs in a dose-specific manner. Peony seed oil (PSO) is rich in unsaturated fatty acids, but its effects on cognitive impairment remain unclear. Male C57BL/6J mice received D-galactose (200 mg/kg/day) with or without PSO (2.4, 4.8, or 9.6 mL/kg/day) for 8 weeks. Cognition, hippocampal morphology, serum malondialdehyde and superoxide dismutase, hippocampal synapse-related transcripts, PSO composition, and predictive network pharmacology were assessed. PSO improved Morris water maze and Y-maze performance and was associated with more preserved hippocampal morphology. It also improved serum oxidative stress-related indicators and upregulated hippocampal Dlg4 , Syn1 , Slc17a7 , Grin1 , Grin2b , and Stx1a mRNA. PSO contained 45.60% alpha-linolenic acid, 22.62% linoleic acid, and 17.12% oleic acid. Network analysis generated unvalidated candidate targets and pathways. PSO attenuated D-galactose-induced cognitive deficits, although protein-level, brain oxidative-stress, and mechanistic validation is still required. Download: Download high-res image (163KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
WATER RESEARCH
·
2026
·
IF 12.8
Jiajun Lu,Rongjie Jiang,Defang Ma,Baoyu Gao,Shuang Zhao,Yan Wang
Oxidative polymerization driven by direct electron transfer (DET) demonstrates superior selectivity and strong anti-interference capability in water purification. However, its practical application is constrained by inherent limitations, including inadequate polymerization efficiency and extent, as well as catalytic site deactivation. To address these challenges, we propose a catalytic pathway engineering strategy through d-band broadening. Building upon this principle, a cobalt-manganese oxide-modified graphite felt (Co‑MnO 2 @GF) catalyst was developed and integrated into a dual-chamber reaction system. Facilitated by a downward shift of the d-band peak, surface-confined oxidative polymerization converted >94% of model pollutants into separable, potentially recoverable polymers. This yielded an effluent free of detectable intermediates and achieved near-complete removal of total organic carbon (TOC). More importantly, the electron delocalization induced by broadened d-band enables electrons derived from pollutants to migrate rapidly toward the oxidant instead of being trapped in Mn d-orbitals. This mitigates the deep reduction of Mn(IV) caused by excessive electron accumulation on Co‑MnO 2 @GF, thereby stabilizing high-valence Mn species during operation and underpinning the superior long-term stability of the catalyst in oxidative polymerization. Our work demonstrates that rational electronic structure design can effectively overcome the intrinsic barriers of DET-driven oxidative polymerization, establishing a scalable purification strategy for sustainable water treatment.
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）