JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Tong Wang,Chao Song,Wei Pan,Zhilong Xu,Lei Fan,Yimin Hu,Jie Han,Rong Guo
Hypothesis Since lamellar liquid crystals (LLCS) could be used for lubrication, many LLCS systems have been constructed to improve lubrication performance. However, most studies focused on the LLCS of the water system, and its corrosiveness brought some limitations to its application. Therefore, it is necessary to construct a non-aqueous LLCS system with good lubrication and anti-corrosion properties to improve its applicability. Experiments Anionic surfactant dodecyl benzene sulfonic acid (DBSA) was used to construct non-aqueous LLCS in different solvents, including monoethanolamine (MEA) and diethanolamine (DEA). DBSA/H 2 O LLCS system was constructed for comparison. The LLCS was characterized by polarizing microscope (POM), small-angle X-ray scattering (SAXS), and rheology. Its microstructure was discussed. Meanwhile, we evaluated the lubrication and anti-corrosion performance of LLCS. Its lubrication mechanism was explained through tribology tests and X-ray photoelectron spectrometer (XPS) analysis of the wear scar surface. Its anti-corrosion mechanism was investigated by using the weightlessness method, electrochemical test method, and quantum chemical theoretical calculations. Findings The DBSA/MEA non-aqueous LLCS system showed better lubrication performance than DBSA/DEA and DBSA/H 2 O LLCS. It can adsorb on the surface of the friction pair to form a lubrication friction film, which plays a better role in reducing friction and wear. The DBSA/MEA LLCS is less corrosive to metals because it can effectively isolate oxygen and water in the air between friction pairs. Furthermore, the lone pair electrons in the 2p orbital of the N atom in the MEA molecule could coordinate with the 3d empty orbital of the Fe atom, forming a protective film on the metal surface, which plays a good anti-corrosion effect. This work not only enriched the study of non-aqueous LLCS but also expanded its potential applications in the field of lubrication.
研究领域:
材料科学
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化学工程
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表面科学
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DOI
PubMed
高影响因子
Journal of Materials Chemistry C
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2026
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IF 5.1
Ruijie Li,Qi Zhang,Qianqian Duan,Shuo Zhang,Xiaoting Han,Juanjuan Xue,Shengbo Sang
Perovskite quantum dots (PQDs) show great promise for chloride ion (Cl−) detection in acidic laboratory wastewater owing to their excellent optical properties. However, their practical applications have been severely hampered by intrinsic instability. In this study, a method for the rapid detection of Cl− was developed using PQDs modified with dodecylbenzenesulfonic acid (DBSA), which effectively enhanced stability. Optimised synthesis yielded PQDs with more uniform size and enhanced stability. After 15 days in ambient air, the DBSA-modified PQDs retained 70% of their initial PL intensity, in contrast to 30% for unmodified ones. Furthermore, the average carrier lifetime increased from 6.62 ns to 11.54 ns, indicating suppressed non-radiative recombination. A highly sensitive fluorescence-based sensor for Cl− was constructed using these optimised PQDs. It showed a broad linear detection range between 0.274 and 2.741 M (R2 = 0.98454), effectively covering the typical concentration range (1–10%) found in laboratory hydrochloric acid waste, and exhibited high specificity for Cl− in complex aqueous matrices. This is attributed to the fact that the sensor operates via a specific halide exchange mechanism, where Cl− in the solution replaces Br− in the PQDs, causing the PL emission to gradually shift to the blue. This reliable sensing performance, combined with the visual detection capability, provides a valuable approach for monitoring acidic wastewater, thereby contributing to environmental protection efforts.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Luheng Wang,Li Xu,Lijuan Lan,Xisi Long
A single spiral sensing unit based on carboxylated multi-walled carbon nanotubes composite dodecylbenzene sulfonic acid-doped polyaniline (MWCNT-COOH@DBSA-PANI) is shown in this research to be capable of detecting both NH 3 concentration and non-contact gap. The sensing unit effectively detects NH 3 concentrations (0–50 ppm) and non-contact gap (0–5 mm), showing a 46.740 % relative change in resistance at 20 ppm NH 3 and superior selectivity (greater relative change in resistance/impedance amplitude/impedance angle to NH 3 than to HCHO/DMF/ethanol/n-hexane). Additionally, within the non-contact gap range of 0–5 mm, it achieves impedance amplitude/angle sensitivity of 1.5652 %/mm (NH 3 : 50 ppm) and 2.2110 %/mm (NH 3 : 0 ppm), respectively. Stability test over 30 days shows relative standard deviations (RSD) of relative change in resistance, impedance amplitude and impedance angle to NH 3 remain below 10.7 %, 9.6 %, and 8.4 %, respectively. Furthermore, the RSD values for its impedance amplitude/angle sensitivity to gap (0–5 mm) do not exceed 8.0 %/7.6 %, correspondingly. When humidity increases from 31 % RH to 75 % RH, the relative change in resistance to 20 ppm NH 3 decreases from 46.740 % to 40.248 %. Finally, by employing the variable separation strategy, the feasibility of dual-function detection is further validated. At a known humidity, NH 3 concentration is determined by the relative change in resistance of sensing unit to NH 3 adsorption. Gap variation is perceived by detecting electromagnetic field disturbances from an approaching target object, manifested as change in the impedance amplitude/angle of the sensing unit. The work establishes a methodological foundation for environmental safety monitoring in confined spaces and real-time operational safety of precision equipment.
研究领域:
传感器与传感技术
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材料科学
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环境监测
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电气工程
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纳米复合材料
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DOI
高影响因子
ACS Applied Electronic Materials
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2025
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IF 4.7
Meiyuan Han,Zhikang Su,Jiarong Mi,Pan Qi,Zhongchen Xu,Jun Zhang,Jiangfeng Qian,Cunlan Guo
Von Neumann architectures face inherent limitations, prompting the rise of neuromorphic computing as a promising alternative. Artificial synapses play a crucial role in replicating the dynamic plasticity of biological synapses, enabling efficient information processing and adaptive learning. We developed a composite nanofilm device composed of denatured bovine serum albumin (dBSA) and molybdenum disulfide (MoS2) using a liquid–liquid interfacial assembly technique. The dBSA-MoS2 current response to humidity is 13.12 times higher than that of pure MoS2. At a relative humidity of 80%, the dBSA-MoS2 device exhibits more pronounced negative differential resistance and hysteresis phenomena than pure MoS2, and the resistance switching ratio of the dBSA-MoS2 device is 3.20- and 2.64-fold higher than those of MoS2 at 0.72 and 1.52 V, respectively. The incorporation of dBSA creates additional pathways for proton transport, which not only improves the electrical properties of dBSA-MoS2 but also enables it to emulate biological synaptic functions. Consequently, the dBSA-MoS2 device was used to simulate the biological synaptic behaviors: long-term potentiation and long-term depression. When integrated into a three-layer artificial neural network for handwritten number recognition, the dBSA-MoS2 device achieved an impressive accuracy of 92.30%. These findings underscore the potential of dBSA-MoS2 composites as next-generation artificial synapses, offering significant promise for neuromorphic computing and future bioelectronic applications.
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高影响因子
FOOD CHEMISTRY
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2025
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IF 9.8
Peng Liu,Huimin Deng,Huijun Chen,Jiaoyang Li,Liangyi Hong,Huimin Zou,Xingyan Zhou,Hian Kee Lee,Zhenzhen Huang
Choline in human breast milk is crucial for infant neurodevelopment. However, choline concentration variation in human breast milk remains understudied. In this work, a colorimetric biosensor of bovine serum albumin@Hemin@Ag nanozyme was developed, leveraging its peroxidase-like activity to oxidize 2,2′-azino-bis(3ethylbenzo-thiazoline-6-sulfonic acid) diammonium salt in the presence of hydrogen peroxide generated from choline oxidation by choline oxidase. Under the optimal conditions, a wide linear range (1–500 μM) and a low limit of detection (0.55 μM) were obtained for choline quantification. Longitudinal analysis of paired human breast milk samples revealed a significant decline in choline level from 15- to 90-d postpartum, influenced by maternal diet during pregnancy and pre-pregnancy body mass index. This research not only provides a robust tool for evaluating breast milk's quality, but also underscores the importance of diet during pregnancy and body mass index management for lactating mothers.
研究领域:
生物传感器
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纳米技术
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分析化学
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母婴健康
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营养生物化学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Xue Zhang,Yanyu Cui,Siyuan Ye,Zhuohan Lin,Yan Li
Two-dimensional (2D) CsPbBr 3 nanoplatelets (NPLs) have attracted great attention as one of promising semiconductor nanomaterials due to their large exciton binding energy and narrow emission spectra. However, the labile ionic and weakly bound surfaces of deep-blue emitting CsPbBr 3 NPLs with wide bandgap result in their colloidal instability, thus degrading their optical properties. It is challenging to obtain deep-blue emitting CsPbBr 3 NPLs with excellent optical properties. In this study, high-quality blue-emitting CsPbBr 3 NPLs with tunable thickness were prepared adopting the DBSA-mediated confinement effect based on the hot-injection method. Thanks to the coordination interaction of − SO 3 − of DBSA ligand and the Pb 2+ on the surface of the CsPbBr 3 NPLs, as well as the effective passivation of Br vacancy defects on the surface of NPLs by OAm-Br, the obtained pure-blue CsPbBr 3 NPLs and deep-blue CsPbBr 3 NPLs show high photoluminescence quantum yield (PLQY) of 92 % and 81.2 %, respectively. To the best of our knowledge, this is the highest PLQY recorded for deep-blue emitting CsPbBr 3 NPLs with two monolayers [PbBr 6 ] 4− octahedra. Furthermore, the agglomeration of CsPbBr 3 NPLs due to ligand loss induced by moisture, oxygen, and irradiation was also suppressed by the dual passivation effect of DBSA and OAm-Br. Our work provided a new approach to developing high-performance and stable deep-blue emitting CsPbBr 3 perovskite nanoplatelets.
研究领域:
材料科学
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纳米技术
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光电学
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DOI
PubMed
高影响因子
NAUNYN-SCHMIEDEBERGS ARCHIVES OF PHARMACOLOGY
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2024
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IF 3.1
Wei Liangli,Yuan Yuqi,Yang Ziteng,Li Yuqing,Wang Tingting,Hu Shenglin,Cai Biao,Wang Guangyun
The neuroprotective function of ginsenoside Rb1 (GRb1) in cerebral ischemia–reperfusion (I/R) was lately emphasized. However, whether GRb1 plays a regulatory role on endoplasmic reticulum (ER) stress-associated pathway in cerebral I/R damage is still unclear. The aim of this study is to explore the function of GRb1 in cerebral ischemia-induced ER stress and the underlying mechanism related to IRE1/TRAF2/JNK pathway. Longa method, cerebral infarct volume, and HE staining were used to evaluate the efficacy of GRb1 in mice with a mouse model of middle cerebral artery occlusion reperfusion (MCAO/R). We also investigated the effect and mechanism of GRb1 against ischemic stroke using in vitro oxygen–glucose deprivation reperfusion (OGD/R) model. We found that GRb1 could improve neurological scores, infarct volume, and histological injury in ischemic mice. Ischemic attack also activated neuronal apoptosis and ER stress, and this effect was attenuated by GRb1. In addition, GRb1 significantly reduced I/R-induced IRE1-TRAF2 interaction, IRE1, and JNK phosphorylation. The present study also confirmed that GRb1 significantly improved OGD/R-induced PC12 cells injury. GRb1 could decrease ER stress in OGD/R-injured PC12 cells, which was reflected by the decreased expression of GRP78 and CHOP. The ER stress inducer tunicamycin partially prevented the effects of GRb1 on cell viability, ER stress, and apoptosis after OGD/R, whereas the ER stress inhibitor 4-PBA exerted the opposite effect. Moreover, GRb1 markedly decreased IRE1-TRAF2 interaction, IRE1, and JNK phosphorylation in the presence of OGD/R insult. Furthermore, JNK inhibitor SP600125 and IRE1 inhibitor DBSA pretreatment further promoted the inhibition of GRb1 on ER stress induction and cell damage induced by OGD/R. Molecular docking further elucidated that the mechanism by which GRb1 improves cerebral ischemia maybe related to its direct binding to the kinase domain of IRE1, which in turn inhibited the phosphorylation of IRE1. Collectively, these results demonstrated that GRb1 reduced ischemic stroke-induced apoptosis through the ER stress-associated IRE1/TRAF2/JNK pathway and GRb1 has the potential as a protective drug for the treatment of cerebral ischemia.
研究领域:
神经科学
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药理学
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细胞生物学
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分子生物学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Yang Liu,Yuelei Li,Xudong Hu,Changting Wei,Bo Xu,Jing Leng,Haibo Miao,Haibo Zeng,Xiaoming Li
Surface ligands play important roles in synthesis, surface passivation, colloidal stability, and modulation of optoelectronic properties for quantum dots (QDs). It is well known that conventional ligands exhibit weak binding on the surface of perovskite QDs (PQDs), resulting in uncontrolled growth and unsatisfied stability during purification and operation. This impedes the device performance progress and practical applications severely. Stronger ligands anchoring on PQDs tightly and passivating surface defects efficiently have been reported to solve the problems. Herein, we choose a representative strong ligand, dodecylbenzene sulfonic acid (DBSA), to investigate its influence on PQD growth, stability under high-temperature with various solvents and additives, and the possibility of core–shell structure construction. Interestingly, the DBSA capped PQDs exhibit abnormally ripening under above conditions. Besides, a new mechanism for ion migration suppression is proposed based on internal lattice relaxation and inter-particle migration pathway elimination. Although DBSA-PQDs can be purified several times and maintain a high quantum yield, the corresponding light-emitting diodes show poor external quantum efficiency, which might be assigned to the unbalanced colloidal stability and film conductivity. This work indicates that strong ligands provide wider space for PQD modulation and the balance between stability and device performance should also be considered.
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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化学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Yanan Zhang,Fei Lu,Yang Yu,Long Su,Yanan Gao,Liqiang Zheng,Xinpei Gao
Ionic liquid (IL)/H 2 O mixtures with tunable lower critical solution temperature (LCST) behavior exhibit tantalizing prospect in the field of liquid-liquid phase separation and purification. Herein, different types of amphiphiles were evaluated for the facile regulation of IL ([P 4444 ][DMBS]) based aqueous biphasic systems (ABSs). Interestingly, the addition of zwitterionic 3-(1-dodecyl-3-imidazolio) propanesulfonate (DIPS) remarkably increases the phase separation temperature of IL aqueous solution, while the addition of anionic sodium dodecyl benzene sulfonate (SDBS) and dodecyl-benzenesulphonic acid (DBSA) results in decreasing of the phase separation temperature. The tunable phase separation temperature ranges from 10 to 90 °C, which almost cover the full usable temperature range of ABSs. The regulation mechanism of amphiphile additives on the LCST behavior of IL/H 2 O mixtures was investigated through isothermal titration calorimetry , 1 H NMR spectroscopy and molecular dynamics simulations . Briefly, the addition of zwitterionic DIPS increased LCST through electrostatic shielding effect, while the addition of anionic SDBS and DBSA decreased LCST through ion exchange effect. As a proof of concept, the amphiphile regulated ABSs were demonstrated to selectively separate aliphatic and aromatic amino acids .
研究领域:
化学
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材料科学
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分离技术
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物理化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Tiantian Wang,Xiansheng Li,Tao Fang,Shalong Wang,Jizhong Song
Cesium lead iodide (CsPbI 3 ) perovskite nanocrystals (NCs) have received widespread attention in light-emitting diodes (LEDs), solar cells, and photodetectors (PDs) for their high thermal stability resulting from all-inorganic components. However, the facile room-temperature synthesis of perovskite-phase CsPbI 3 NCs remains a major challenge because of the thermal unequilibrium-induced metastable (black) to stable (yellow) phase transition. Here, we proposed a ligand-mediated strategy to synthesize γ-phase CsPbI 3 perovskite NCs in non-polar solvent at room temperature for the first time. We found that the introduction of 4-dodecylben-zenesulfonic acid (DBSA) ligand could prevent CsPbI 3 changing from the γ phase to the δ phase, which was attributed to the strong bonding and steric hindrance that suppressed the distortion of the corner-sharing octahedron . The as-synthesized CsPbI 3 perovskite NCs were well-dispersed in organic solvents (such as toluene and hexane), which could serve as inks to construct the active layer for solution-processed optoelectronic devices (The PD with an on/off ratio of 200, and the LED showing an external quantum efficiency (EQE) approaching 6%). The proposed method showed superior universality as evidenced by the successful synthesis of efficient red-greenblue CsPbX 3 NCs (the EQEs were 8.6%, 14.7%, and 3.4% for red, green, and blue LEDs, respectively). The results demonstrated that the room-temperature synthesis could avoid the tediousness of typical hot-injection at high temperatures and this method could be widely applied to various optoelectronic devices.
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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化学
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DOI
高影响因子
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