JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2017
·Vol. 314
·期 1
·59-67
·
IF 1.282
Liu Zhanxiang,Dong Yang,Liao Jiali,Li Xingliang,Yang Jijun,Yang Yuanyou,Luo Shunzhong,Liu Ning
A novel extractant, 5-octyloxymethyl-7-bromo-8-quinolinol (HBrO 8 Q), was employed to extract Pd(II) from low-acidity aqueous solution. The extraction behaviors indicated that HBrO 8 Q had high extraction efficiency and selectivity for Pd(II) under the experimental conditions, and the stoichiometry of Pd(II) with HBrO 8 Q was found to be 1:1 by means of mole ratio method and Job’s method. The thermodynamic study indicated that the extraction process was endothermic and spontaneous. Additionally, complete back extraction of palladium could be achieved by using acidic thiourea solution.
研究领域:
化学
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环境科学
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DOI
高影响因子
REPRODUCTION FERTILITY AND DEVELOPMENT
·
2023
·Vol. 35
·期 14
·669-675
·
IF 1.9
Min Liu,Yong-Jie Mi,Juan Dai
Context Aquaporin 7 (AQP7) is selectively expressed in decidualised endometrial stromal cells (ESCs) of mice surrounding the embryonic implantation sites. However, the roles of AQP7 and the underlying mechanism that regulates AQP7 expression in endometrial decidualisation after implantation are still unclear.Aims This study aimed to investigate the role of the PI3K-Akt pathway in regulating the expression of AQP7 in ESCs and decidualisation.Methods Primary ESCs of pregnant mice were isolated to establish in vitro decidualisation models. PI3K inhibitor LY294002 was added to the decidualisation models, then AQP7 expression, changes in decidualised ESC morphology and expression of decidualisation marker molecules were examined.Key results AQP7 knockdown reduced the proliferation and differentiation of ESCs with in vitro induced decidualisation. Furthermore, when the activity of PI3K was inhibited by LY294002, the expression of AQP7 in decidualised ESCs was decreased and both the proliferation and differentiation of ESCs were significantly reduced.Conclusions This indicates that AQP7 is a key molecule involved in endometrial decidualisation and the expression of AQP7 is upregulated through activation of the PI3K-Akt pathways, which promotes the proliferation and differentiation of the ESCs, thus affecting occurrence of decidualisation.Implications This study may provide a new biomarker for the diagnosis of infertility and a new drug target for the prevention and treatment of infertility.
研究领域:
生殖生物学
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分子生物学
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医学
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DOI
PubMed
高影响因子
ACS Applied Bio Materials
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2025
·
IF 4.7
Jicong Lu,Yingying Guo,Zhaoyuan Yang,Mengxia Xie,Shuangyu Zhang,Keji Li,Jingjing Yang,Shanhui Xue,Da Xu,Kanglu Yan,Yuehua Liu
The prevalence of gestational diabetes mellitus (GDM) is currently on the rise globally, which heightens the risk of adverse pregnancy outcomes and subsequently increases the likelihood of cesarean delivery. GDM can induce hyperglycemic conditions in cesarean wounds, leading to delayed wound healing and complications such as itching, pain, and scarring. These complications significantly impact the quality of life and mental health of mothers. Furthermore, there is a lack of effective clinical prevention strategies. Consequently, the need to improve wound healing after cesarean sections in women with GDM is a pressing concern that warrants our attention. To maximize the therapeutic impact and extend the bioavailability of calycosin-7-glucoside (CG), it was integrated into a hybridized hydrogel (GOHA) as a drug carrier to create the GOHACG hydrogel. Bases on our tests, the GOHACG hydrogel demonstrated a strong capacity for water absorption, appropriate pore size, and good biocompatibility to adjust to the in situ surroundings of the wound. GOHACG also promoted epidermal regeneration, collagen deposition, angiogenesis, and the conversion of macrophages from the M1 to M2 phenotype. Indicating a reduction in the inflammatory response, accelerated wound repair, and minimized skin scarring in a postcesarean delivery model involving gestational diabetic mellitus mice. In brief, the GOHACG possesses significant properties that enhance wound healing in GDM model, suggesting its potential effects in treating wound healing of GDM.
研究领域:
医学
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药理学
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生物材料学
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DOI
PubMed
高影响因子
Advanced Optical Materials
·
2024
·Vol. 12
·期 23
·2400839
·
IF 8
Xiao-Feng Wang,Rui-Lian Lin,Wen-Qi Sun,Jing-Xin Liu,Li-Xin Xu,Carl Redshaw,Xing Feng
Multistimuli-responsive color-changing materials have potential applications in areas such as chemical sensing and anti-counterfeiting. In this work, a fluoro-phenyl-acetyl-substituted viologen derivative (FPAV·Cl 2 ) is synthesized, which can form a supramolecular inclusion complex with cucurbit[7]uril (Q[7]) via self-assembly. Significantly, the resulting inclusion complex FPAV 2+ @Q[7] in the solid-state exhibits visual color changes in response to multiple external stimuli including light, heat, and vapors of ammonia and organic amines. The electron spin resonance (ESR) and ultraviolet–visible (UV–vis) spectra analysis reveals that the photochromic, thermochromic, and vapochromic behavior of FPAV 2+ @Q[7] is due to the generation of FPAV +• free radicals resulting from electron transfer. Furthermore, in the solid-state, FPAV 2+ @Q[7] shows controllable fluorescence regulated by its chromic process. Based on the multi stimuli-responsive color-changes and fluorescence properties of FPAV 2+ @Q[7], its practical applications in erasable inkless printing, multiple anti-counterfeiting processes, visible ammonia/organic amines detection, and information encryption are demonstrated. The supramolecular strategy of encapsulating viologen derivatives into macrocycles provides a general method for fabricating multi stimuli-responsive chromic materials with multiple practical applications.
研究领域:
超分子化学
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材料科学
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DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2024
·
IF 4.1
Yingzi Lin,Mengshi Wang,Junjie Chen,Siwen Li,Yuanyuan Zhang,Liangliang Wei,Ningning Sun,Chengyu Liu,Junjie Zhao
Based on the deficiency of the Fe 2+ catalyzed persulfate (PDS) process, ultraviolet (UV) synergistic Fe 2+ activated PDS system was introduced in this study for the degradation of acid orange 7 (AO7) dye. The effects of different initial pH, PDS dosage, Fe 2+ dosage, and different UV intensities on the degradation rate of AO7 were investigated, and a kinetic model for the apparent reaction rate was determined. The results showed that the UV/Fe 2+ /PDS system was effective in degrading AO7 in a wide pH range. Under optimal conditions, 96 % removal of AO7 was achieved in 10 min. The effects of different inorganic anions on AO7 were discussed; Cl − had little effect on the degradation effect, and SO 4 2− , NO 3 − and HCO 3 − inhibited the degradation of AO7 by the system to varying degrees. The presence of reactive radicals (SO 4 ·− and·OH) in the reaction was determined by quenching experiments and EPR capture and their degradation contribution was further investigated. Nine intermediates of AO7 were detected by LC-MS/MS, and the degradation pathway of AO7 was inferred by combining with UV-Vis spectra. Finally, the ecotoxicity and tritogenic effects of AO7 intermediates were assessed by Toxtree and T.E.S.T toxicity prediction models, which showed that the final degradation product toxicity was non-mutagenic, non-teratogenic, and devoid of hereditary and non-hereditary carcinogenicity.
研究领域:
环境科学
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化学工程
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毒理学
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DOI
高影响因子
POWDER TECHNOLOGY
·
2025
·
IF 4.6
Wenqing Li,Shimin Zhang,Songchao Shi,Xin Ruan,Qian Yang,Baoyun Ye,Chongwei An,Jingyu Wang
The proportion of oxidizer in the formulation of composite solid propellants (CSPs) is often more than 50 %. It is very important to explore the preparation of new high-energy oxidizers to improve the energy performance of CSPs. Porous CL-20/FOX-7@AP composite microspheres were prepared by combining high-energy density CL-20 and high safety FOX-7 with traditional oxidant AP through microchannel recrystallization technology coupled with solvent evaporation induced self-assembly technology. The experimental results show that the morphology of porous CL-20/FOX-7@AP composite microspheres is regular, and AP is uniformly attached to the surface of porous CL-20/FOX-7 composite microspheres. Compared with CL-20/FOX-7 composite microspheres, the oxygen balance of CL-20/FOX-7@AP increased from −14.12 % to −8.47 %, and the minimum impact excitation energy of CL-20/FOX-7@AP-1 and CL-20/FOX-7@AP-2 increased by 2.25 J and 3.25 J, respectively. When CL-20/FOX-7@AP-1 and CL-20/FOX-7@ AP-2 were used as new oxidants to replace 10 % AP in CSPs formula, the burning rate increased by 21.52 % and 27.85 % respectively, and the pressurization rate increased by 69.79 % and 75.44 % respectively. CL-20/FOX-7@AP composite microspheres with a porous synergistic core-shell structure are expected to be used as novel high-energy oxidants in CSPs to improve the energy density and energy release efficiency of CSPs.
研究领域:
材料科学
·
推进剂技术
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产品关联
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 3
·1769-1775
·
IF 3.119
Wenzhe Ma,Yanjing Yang,Fengqi Zhao,Kangzhen Xu,Jiankan Zhang,Ming Zhang,Zhicun Feng
The development of novel combustion catalysts is critical for improving combustion performance of high-energy solid propellants. In this work, a nickel-based Schiff base complex, N,N′-bis(salicylidene)ethylenediamino nickel [Ni(Salen)], as a candidate for the combustion catalyst of solid propellants, was synthesized with high purity. The effects of Ni(Salen) on the thermal decomposition reaction of FOX-7, which is closely related to its combustion properties in propellants, were systematically investigated and the corresponding mechanisms were also evaluated through comparison and analysis. Under the action of Ni(Salen), peak temperatures of the two decomposition processes of FOX-7 were reduced from 235.7 and 296.3 °C to 233.7 and 268.7 °C, respectively. The investigations into the mechanisms revealed the interactions between the Schiff base skeleton in Ni(Salen) and FOX-7, which promotes the decomposition of the remaining FOX-7. In addition, it was found that NiO, which was a decomposition product of Ni(Salen), also played an important role in promoting the thermal decomposition of FOX-7.
研究领域:
化学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LIQUID CRYSTALS
·
2010
·
IF 1.451
Yan Li,Xinbing Chen,Pei Chen,Zhongwei An,Juan Li
A new series of fused polyheterocyclic aromatic compounds, 7-alkoxybezopyrano[2,3-c]pyrazol-3-one (C-
n
BPP), were synthesised and characterised by infrared, 1H-nuclear magnetic resonance (NMR), 13C-NMR and two-dimensional 1H-13C cosy spectra. Their phase transition behaviour was investigated by differential scanning calorimetry and polarising optical microscopy. All of these compounds showed enantiotropic mesophases with temperature domains of 12–60°C and 22–69°C on heating and cooling processes for a carbon number of the alkoxy chain from 2 to 10. The effect of the length of the alkoxy chain on the mesomorphic properties was discussed. Comparison of C-
n
BPP and several kinds of coumarin derivatives indicated that the intermolecular hydrogen bonding acted as the driving force of the mesophase formation.
研究领域:
有机化学
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材料科学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2019
·
IF 1.795
Mei-Xiang Yang,Ming Liu,Mei Yang,Qin Wang,Xi Zeng,Zhu Tao,Xin Xiao,Ying Huang
In the present work, a well-known host–guest inclusion complex comprising a cucurbit[7]uril (Q[7]) and an important biological dye, Hoechst-33258 (H33258) was selected as a fluorescence probe. In contrast to the pH conditions in which H33258 is exhibited in the literature, these being, mono- or di-protonated states, in the present work, we selected an extreme case, whereby H33258 was displayed in an anionic state (pH = 11). The investigation of the host–guest interaction demonstrated similar inclusion modes in a wide pH range, that is the dumbbell-like inclusion complex in which one Q[7] includes piperazine moiety and another Q[7] includes the phenol moiety of H33258. Moreover, investigation on the binding capacity of the 15 selected anions under three representative pH levels (pH = 2, pH = 4.5 and pH = 11, respectively) indicated that the H33258@Q[7] probe displayed unique selectivity on HPO 4 2 − anion in medium at pH = 11. More importantly, the probe could open a new platform in Q[ n ]-chemistry, that is the Q[ n ]-based host–guest interaction systems can apply in anion recognition or response.
研究领域:
化学
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生物化学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF PHOTOENERGY
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2022
·
IF 2.535
Yaohui Xu,Chi Deng,Changxue Dong,Qin Wang,Nunan Gao
Acid Orange 7 (AO7) is one of the most common azo dyes; however, its strong azo bond makes them difficult to biologically degrade. We sought to degrade AO7 dye using CeO2 as a promising alternative photocatalyst. CeO2 powders were synthesized with alternative monoethanolamine (MEA), diethanolamine (DEA), and triethanolamine (TEA) as a precipitant by solvothermal process combined calcination in air. Compared to the oxygen storage capability of Blank-CeO2 (0.186 mmol O2/g), that of MEA-CeO2 synthesized in the presence of MEA as a precipitant increased by 21.0%, while that of DEA-CeO2 and TEA-CeO2 synthesized in the presence of DEA and TEA as precipitants were decreased. Importantly, such MEA-CeO2 exhibited the highest photocatalytic activity than Blank-, DEA-, and TEA-CeO2 in degradation of AO7 under simulated sunlight illumination, and the removal rate of AO7 by MEA-CeO2 could reach 98.3% within 100 min.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
CHEMOSPHERE
·
2017
·
IF 4.208
Jing Li,Heng Lin,Kangmeng Zhu,Hui Zhang
Electrochemistry coupled with granulated activated carbon catalysis of peroxymonosulfate (electro/GAC/PMS) as a novel wastewater treatment process was performed for the degradation of Acid Orange 7 (AO7) in aqueous solution. The decolorization of AO7 was compared under different permutations and combinations of electro-oxidation, GAC and PMS. It showed that the electro/GAC/PMS process was the most effective and the decolorization of AO7 followed pseudo-first order kinetics. The surface chemistry of GAC samples was analyzed by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Compared with the fresh samples, π-electron density and hydroxyl group content decreased under the GAC/PMS system, but kept the similar values under the electro/GAC/PMS system. Electron paramagnetic resonance and radical scavenger studies were used to verify the formation of sulfate radicals (SO 4 − ) and hydroxyl radicals ( OH). The optimized conditions were found to be: current density 8 mA cm −2 ; PMS concentration 5 mM; GAC dosage 0.5 g L −1 ; and initial pH value 5.0. GAC recycling experiments over 4 runs showed some decrease in reactivity. Overall, the results indicate that 100% color removal was readily achieved and 50.4% of TOC was removed which shows high efficiency of the electro/GAC/PMS process.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Lei Yao,Chao Hong,Yangxu Qi,Lie Wu
In this study, we developed a novel magnetic composite of walnut shell biochar (WSB) and modified it with ZIF-7 for the purpose of removing Co 2+ ions. We conducted a comprehensive evaluation of its performance in Co 2+ removal, considering various factors such as contact time, temperature, adsorbent dose, pH, and initial Co 2+ concentration. Utilizing response surface methodology-central composite design (RSM-CCD), we examined the interactions between these variables. The specific surface area and magnetic saturation value of the WSB/MnFe 2 O 4 /ZIF-7 composite were determined as 170.560 m 2 .g −1 and 23.469 emu.g −1 , respectively. ANOVA analysis indicated that our model effectively captures the interactions between variables, with a high R 2 value of 0.9982, explaining 99.82 % of the experimental data. Optimal conditions for maximum Co 2+ adsorption efficiency (99.05 %) were identified as follows: a contact time of 44.82 min, pH of 6.04, adsorbent dose of 0.947 mg.L -1 , temperature of 25.55 °C, and Co 2+ concentration of 11.13 mg.g −1 . Kinetic studies revealed that the Pseudo 2nd order kinetic model provided the best fit to the experimental data. The negative entropy parameter indicated a decrease in disorderliness during the adsorption process, while the exothermic nature of adsorption was confirmed by enthalpy values of −92.751 and −40.511 kJ.mol −1 for WSB/MnFe 2 O 4 /ZIF-7 and WSB, respectively. Furthermore, the Langmuir isotherm model demonstrated excellent fitting to the isotherm results, suggesting the dominance of homogeneous surfaces in adsorption. The maximum adsorption capacities for Co 2+ using WSB/MnFe 2 O 4 /ZIF-7 and WSB were determined to be 29.26 and 22.39 mg.g −1 , respectively. The WSB/MnFe 2 O 4 /ZIF-7 magnetic composite demonstrates promising potential for efficiently removing Co 2+ from both natural water sources and industrial wastewater, highlighting its versatility and effectiveness in environmental remediation applications.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）