THERMOCHIMICA ACTA
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2025
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IF 3.5
Jian Ma,Yixiao Wang,Jichao Hu,Gaoqi Han,Lemeng Wang,Huiying Gao,Pan Zhang,Kangrui Li,Dong Fu
This study determined and correlated the density and viscosity of the 2-(methylamino)ethanol (MAE) - dimethyl sulfoxide (DMSO) non-aqueous solution over a temperature range of 298.15 to 323.15 K at atmospheric pressure. The effects of the mass fraction of MAE ( w 1 ), temperature ( T ) and CO 2 loading ( α ) on viscosity and density were demonstrated based on of experimental data and calculations. The excess molar volume ( V m E ) and viscosity deviation ( Δη ) were derived from the experimental data. Furthermore, the V m E and Δη were correlated by using the Redlich-Kister equation. The viscosity activation energy and CO 2 diffusion coefficient were calculated and analyzed by utilizing viscosity data. The activation parameters activation enthalpy (Δ Η* ) and activation entropy (Δ S* ) were determined using the measured viscosity and density data. This combined study provides insights into intermolecular interactions and transportation characteristics through the observed changes in viscosity and density with composition.
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JOURNAL OF THE AMERICAN CERAMIC SOCIETY
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2025
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IF 3.8
Fulong Hao,Tongshu Zhang,Xinyi Zhang,Yuheng Zhang,Wanyu Zhao,Zehua Xue,Xiyuan Zhang,Zuobin Tang
Rare-earth-doped β-Ca 3 (PO 4 ) 2 -type derivatives are a research hotspot in optoelectronics materials, yet achieving eye-friendly comfortable emission in such multication lattice systems remains a challenge. Herein, a novel orange-emitting phosphor Sr 7 LuNaMg 1.5 (PO 4 ) 7 :Eu 2+ was designed based on the crystal structure of Sr 9 Fe 1.5 (PO 4 ) 7 (ICSD No. 93870), whose structure is topologically similar to β-Ca 3 (PO 4 ) 2 . The title phosphor exhibits ultra-broadband emission centered at 599 nm (full-width at half-maximum = 197 nm) under 395 nm n-UV excitation. Structural characterization coupled with spectroscopic studies demonstrates the coexistence of multiple luminescent centers in Sr 7 LuNaMg 1.5 (PO 4 ) 7 :Eu 2+ . A progressive redshift in the emission color coordinates was observed with increasing Eu 2+ doping concentrations, attributable to selective cation occupancy and crystal field effects. The concentration-dependent quenching mechanism was elucidated through comprehensive analysis based on Dexter's theory. Characterization of quantum efficiency, thermal stability and packing density validated the suitability of Sr 7 LuNaMg 1.5 (PO 4 ) 7 :Eu 2+ phosphor for high-performance white light-emitting diodes, demonstrating it as a competitive luminescent material for advanced lighting technologies.
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CRYSTAL GROWTH & DESIGN
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2025
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IF 3.4
Lei Gao,Jin-Qing Li,Hui-Jun Chen,Xian-Ying Xie,Yan Liu,Xian-Rui Zhang
This study uncovers the molecular mechanism of water-triggered reversible fluorescence switching through cocrystalline assemblies of 2-methylbenzimidazole and 1,2,4,5-tetracyanobenzene. Single-crystal analysis reveals that in the hydrated phase (2METC-2), water molecules bridge donor–acceptor units via O–H···N/N–H···O hydrogen bonds, inducing substantial molecular distortion (dihedral angle change Δθ = 50.67°) and π–π compression (interplanar spacing reduction Δd = 0.209 Å). These structural rearrangements enhance exciton coupling and activate nonradiative decay pathways, quenching the fluorescence quantum yield from 13.70% (anhydrous phase, 2METC-1) to 0.48%. Variable-temperature PXRD, DSC, TGA, and cycling experiments confirm >5 reversible transitions at 80 °C/solvent with <8% intensity decay, demonstrating exceptional thermal-humidity dual responsiveness. Theoretical analyses establish that methyl-directed steric effects and cooperative C–H···O interactions construct dynamic hydrogen-bonding networks, providing an alternative strategy to conventional hydrophilic group dependency. This work establishes a new design paradigm for highly stable stimuli-responsive luminescent materials.
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SYNTHETIC METALS
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2016
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IF 2.299
Qiang Zhao,Junhua Chen,Fubin Luo,Lu Shen,Ying Wang,Kun Wu,Mangeng Lu
Nanostructure of ordered polyaniline-graphene (PANI-rGO PMAS ) hybrid nanomaterials is assembled based on poly(2-methoxyaniline-5-sulfonic acid) (PMAS) functionalized reduced graphene oxide (rGO PMAS ) nanosheets. The presence of PMAS not only improves dispersibility of reduced graphene oxide nanosheets, but also plays a key role for heterogeneous nucleation of polyaniline (PANI) nanorods . The formation mechanism of ordered PANI-rGO PMAS hybrid nanomaterials was studied in details by using field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM) and ultraviolet-visible spectrophotometry (UV–vis). The conductivity of PANI-rGO PMAS hybrid with 17 wt% rGO PMAS is as high as 4480 S/m, compared with 2.93 S/m for pure PANI. The cyclic voltammetry tests indicate that, PANI-rGO PMAS containing 2 wt% rGO PMAS possesses fast response to redox reactions and excellent reversible stability. It has a high specific capacitance of 385 F g −1 at the scan rate of 10 mV s −1 with potential ranges from −0.2 to 0.8 V. This ordered polyaniline-graphene hybrid has potential applications for flexible supercapacitors, sensors, batteries, electromagnetic materials and thermoelectric materials, etc.
研究领域:
材料科学
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纳米科技
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高分子化学
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电化学
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能源材料
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SENSORS AND ACTUATORS B-CHEMICAL
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2016
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IF 4.758
Juan Hou,Tianyu Zhou,Long Wang,Ping Zhang,Lan Ding
In this work, Zn(OH) 2 nanosheets embedded with carbon dots (CDs) were prepared through a template-free microwave-assisted route for the first time. The preparative strategy was facile, green and cost-effective. The final composites possessed uniform size distribution, good fluorescence property, excellent stability and fast adsorption ability for metal ions. A novel and ultrasensitive fluorescent assay has been proposed using CDs/Zn(OH) 2 composites as amplifying fluorescent sensors for rapid detection of Cu 2+ and Hg 2+ in real water samples. Aided by a Cu 2+ /Hg 2+ chelating agent, exclusive detection could be expected without cross-reactivity, as well as reversible and reproduced analysis. The detection limits were 0.3 nM for Cu 2+ and 0.2 nM for Hg 2+ , respectively. This assay could effectively enrich/separate and detect Hg 2+ and Cu 2+ simultaneously, revealing remarkable advantages including operational simplicity, high sensitivity, low cost and acceptable reproducibility.
研究领域:
材料科学
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分析化学
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环境科学
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纳米技术
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Jiawen Li,Junhong Ran,Chaoyong Deng,Min Zhang
Eu 3+ -doped La 7 O 6 (BO 3 )(PO 4 ) 2 phosphors were synthesized using a high-temperature solid-state method. The phosphors with the optimal doping concentration ( x = 0.4 mol) exhibited strong red emission at 616 nm, demonstrating good thermal stability (70% at 398 K) under 465 nm excitation. Furthermore, tunable correlated color temperature (CCT) was achieved, and the fabricated red LEDs showed satisfactory CCT stability, with standard deviations of 0.00451 and 0.00447 for CIE x and CIE y , respectively. White LEDs made from this phosphor exhibited a good color rendering index R a = 92.6 and a high color temperature CCT = 5612 K. In addition, this phosphor can be used to display invisible anti-counterfeiting patterns, fingerprint visualization, and light-controlled encryption, demonstrating its multifunctional potential in solid-state lighting and security applications.
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Carbohydrate Polymer Technologies and Applications
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2026
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IF 7.6
Haoyang MIAO,Zhuangzhuang WANG,Chi ZHANG,Mingru CUI,Qun YANG,Han ZHANG,Mei YIN,Xuefeng YANG,Xuehan LIU,Qinggong HAN,Xiaojing XIA,Zhixing AN
Type 2 diabetes mellitus (T2DM) is a major global health burden. Chlorogenic acid (CGA) shows antidiabetic potential by improving glucose/lipid metabolism, insulin sensitivity, and inflammatory/oxidative status, but its use is limited by poor solubility, low gastrointestinal stability, extensive first-pass metabolism, and low oral bioavailability. Here, we developed an oral multilayer nanodelivery system (CGA@CDs-HA-TMC) comprising cyclodextrin inclusion cores (CDs) and hyaluronic acid (HA) plus trimethyl chitosan (TMC) outer layers. The nanocomposites displayed a uniform nanoscale size, positive ζ-potential, and favorable colloidal dispersion characteristics. Spectroscopic and X-ray diffraction analyses confirmed CGA amorphization and stable encapsulation within the cyclodextrin–polysaccharide network. CGA@CDs-HA-TMC reduced burst release in simulated gastric fluid and enabled sustained release in simulated intestinal fluid. In high-fat diet/streptozotocin-induced T2DM mice, CGA@CDs-HA-TMC lowered fasting blood glucose and OGTT AUC, improved insulin resistance (HOMA-IR), and partially restored β-cell function (HOMA-β). It also improved dyslipidemia, decreased ALT, AST, serum creatinine, BUN, 24-h urinary protein, and reduced circulating TNF-α, IL-6, IL-1β, and IL-18, generally outperforming free CGA. Histology further showed alleviation of hepatic steatosis, renal glomerular/tubular injury, and pancreatic islet damage. Overall, CGA@CDs-HA-TMC is a promising cyclodextrin–polysaccharide nanoplatform for enhancing oral delivery and antidiabetic efficacy of CGA and other poorly bioavailable polyphenols.
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JOURNAL OF HAZARDOUS MATERIALS
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2023
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IF 13.6
Yu-Ning Hu,Jin-Tao Zhan,Pei-Rong Bai,Na An,Jun-Jie Tan,Yan-Zhen Wang,Quan-Fei Zhu,Yu-Qi Feng
Di(2-ethylhexyl) phthalate (DEHP), the most widely used plasticizers in the world, has been regarded as an endocrine disrupting chemical with serious adverse health outcomes. Accumulating evidence strongly suggests that the undesirable biological effects of DEHP are meditated by its metabolites rather than itself. However, the metabolic footprints of DEHP in vivo are still unclear. Here we developed a click chemistry-assisted mass spectrometry (CC-MS) strategy for in-depth profiling DEHP metabolites in rats. An alkyne-modified DEHP analogue (alkyne-DEHP) was synthesized as a tracer for in vivo tracing, and a pair of MS probes (4-azido-nphenylbenzamide, 4-ANPA, and its deuterated reagent d 5 -4-ANPA) were prepared to specifically label the alkyne-DEHP metabolites, and prominently improve their detection sensitivity and selectivity . Using the CC-MS strategy, we successfully screened 247 alkyne-DEHP metabolites from rat urine, feces, and serum, including many unrevealed metabolites, such as oxidized phthalate diester metabolites and glucuronides of phthalate monoester metabolites. The discovery of new DEHP metabolites provides additional insights for understanding the metabolism of DEHP, which may be beneficial in exploring the mechanism underlying DEHP induced-toxicity in the future.
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PubMed
高影响因子
COMBUSTION AND FLAME
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2023
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IF 4.4
Jinhu Liang,Ruining He,Shashank S. Nagaraja,A. Abd El-Sabor Mohamed,Haitao Lu,Yousef M. Almarzooq,Xiaorui Dong,Olivier Mathieu,William H. Green,Eric L. Petersen,S. Mani Sarathy,Henry J. Curran
2,3-Dimethyl-2-butene (TME) is a potential fuel additive with high research octane number (RON) and octane sensitivity ( S ), which can improve internal combustion engine performance and efficiency. However, the combustion characteristics of TME have not been comprehensively investigated. Thus, it is essential to study the combustion characteristics of TME and construct a detailed chemical kinetic model to describe its combustion. In this paper, two high-pressure shock tubes and a constant-volume reactor are used to measure ignition delay times and laminar flame speeds of TME oxidation . The ignition delay times were measured at equivalence ratios of 0.5, 1.0, and 2.0 in “air”, at pressures of 5 and 10 bar, in the temperature range of 950 – 1500 K. Flame speeds of the TME/ “air” mixtures were measured at atmospheric pressure, at a temperature of 325 K, for equivalence ratios ranging from 0.78 to 1.31. Two detailed kinetic mechanisms were constructed independently using different methodologies; the KAUST TME mechanism was constructed based on NUIGMech1.1, and the MIT TME mechanism was built using the Reaction Mechanism Generator (RMG). Both mechanisms were used to simulate the experimental results using Chemkin Pro. In the present work, reaction flux and sensitivity analyses were performed using the KAUST mechanism to determine the critical reactions controlling TME oxidation at the conditions studied.
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2023
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IF 6.8
Bingru Zhang,Shaowei Wang,Yunbing Tang,Zhiyan Hu,Lei Shi,Jialin Lu,Huitao Li,Yiyan Wang,Yang Zhu,Han Lin,Ren-shan Ge
Bisphenols (BPs) as endocrine-disrupting compounds have drawn attention to their health hazards. Whether a BP interferes with glucocorticoid metabolism remains unclear. 11β-Hydroxysteroid dehydrogenase 2 (11β-HSD2) is a key glucocorticoid-metabolizing enzyme that controls fetal glucocorticoid levels across the placental barrier and mineralocorticoid receptor specificity in the kidney. In this study, 11 BPs were tested to inhibit human placental and rat renal 11β-HSD2 and were analyzed for inhibitory potency, mode action, and docking parameters. BPs had inhibitory potency against human 11β-HSD2: BPFL>BPAP>BPZ>BPB>BPC>BPAF>BPA>TDP and the IC 10 values were 0.21, 0.55, 1.04, 2.04, 2.43, 2.57, 14.43, and 22.18 μM, respectively. All BPs are mixed inhibitors except BPAP, which is a competitive inhibitor for human 11β-HSD2. Some BPs also inhibited rat renal 11β-HSD2, with BPB (IC 50 , 27.74 ± 0.95) > BPZ (42.14 ± 0.59) > BPAF (54.87 ± 1.73) > BPA (77.32 ± 1.20) > other BPs (about 100 μM). Docking analysis showed that all BPs bound to the steroid-binding site, interacting with the catalytic residue Tyr232 of both enzymes and the most potent human 11β-HSD2 inhibitor BPFL acts possibly due to its large fluorene ring that has hydrophobic interaction with residues Glu172 and Val270 and π-stacking interaction with catalytic residue Tyr232. The increase in the size of substituted alkanes and halogenated groups in the methane moiety of the bridge of BPs increases its inhibitory potency. Regressions of the lowest binding energy with inhibition constant indicated that there was an inverse regression. These results indicated that BPs significantly inhibited human and rat 11β-HSD2 activity and that there were species-dependent differences.
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ACS Applied Materials & Interfaces
·
2023
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IF 9.5
Xian Jiang,Bing Liu,Qinghong Zeng,Fuchao Yang,Zhiguang Guo
To alleviate the economic and environmental damage caused by industrial discharges of oily wastewater, materials applied for efficient oil/water separation are receiving significant attention from researchers and engineers. Among others, switchable wettable materials for bidirectional oil/water separation show great potential for practical applications. Inspired by mussels, we utilized a simple immersion method to construct a polydopamine (PDA) coating on a peony-like copper phosphate surface. Then, TiO2 was deposited on the PDA coating surface to build a micro–nano hierarchical structure, which was modified with octadecanethiol (ODT) to obtain a switchable wettable peony-like superhydrophobic surface. The water contact angle of the obtained superhydrophobic surface reached 153.5°, and the separation efficiency was as high as 99.84% with a flux greater than 15,100 L/(m2·h) after 10 separation cycles for a variety of heavy oil/water mixtures. Notably, the modified membranes have a unique photoresponsiveness, transforming to superhydrophilic upon ultraviolet irradiation, achieving separation efficiencies of up to 99.83% and separation fluxes greater than 32,200 L/(m2·h) after 10 separation cycles for a variety of light oil/water mixtures. More importantly, this switch behavior is reversible, and the high hydrophobicity can be restored after heating to achieve efficient separation of heavy oil/water mixtures. In addition, the prepared membranes can maintain high hydrophobicity under acid–base conditions and after 30 sandpaper abrasion cycles, and damaged membranes can be restored to superhydrophobicity after a brief modification in the ODT solution. This simple-to-prepare, easy-to-repair, robust membrane with switchable wettability shows great potential in the field of oil/water separation.
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Nano Research
·
2023
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IF 9.9
Yang Limin,Qu Linjiao,Zhang Xiaolong,Li Mingming,Liu Zhen
Enzyme-inorganic hybrid nanoflowers (HNFs) have shown excellent sensing capabilities due to their large specific surface area as well as the simplicity and mildness of the preparation process. However, coupling HNFs to electrodes to fabricate a uniform and controllable enzymatic electrochemical sensing interface remains a challenge. Here, we proposed an aptamer-induced in-situ fabrication strategy for preparing an HNF-based electrochemical sensor with ideal performance. Central to this strategy is the introduction of acetylcholinesterase (AChE)-specific binding aptamer (Apt), which induces the in-situ growth of AChE-copper phosphate (Cu 3 (PO 4 ) 2 ) HNFs on the surface of carbon paper (CP). In addition, a dense gold nanoparticle (AuNP) layer was electrodeposited on the CP for anchoring Apt and further extending the electroactive surface area. The prepared AChE-Cu 3 (PO 4 ) 2 HNF/Apt/AuNP/CP biosensor exhibited a wide detection range from 1 to 10 7 pM for the four organophosphorus inhibitors, including isocarbophos, dichlorvos, methamidophos, and parathion, with detection limits down to 0.016, 0.028, 0.071, and 0.113 pM, respectively. With the reactivation of pralidoxime chloride, the electrode can still recover 98.1% of the response after five times of repeated use. In real sample detection, the biosensor achieved high recoveries from 96.45% to 100.13%. The detection target may be extendable to other AChE inhibitors (e.g., drugs for Alzheimer’s disease). This study demonstrates for the first time the feasibility of using aptamers as an inducer to fabricate an electrochemical enzyme sensing interface in-situ . This strategy can be used to fabricate other enzyme-based biosensors and therefore has broader applications.
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