ACS Applied Nano Materials
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2023
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IF 5.9
Weihao Ye,Jiemin Qiu,Zhiqiang Xu,Congcong Chen,Guangqi Hu,Chaofan Hu,Jianle Zhuang,Wei Li,Xuejie Zhang,Bingfu Lei,Yingliang Liu
Ultraviolet (UV) absorbents are widely used in coatings and polymers owing to their remarkable absorbance of UV irradiation. As a new type of organic UV absorbent, carbon dots (CDs) have presented outstanding UV absorption properties. However, the use of water-soluble reactants in the synthesis process of most CDs makes them easy to dissolve in water, which is not conducive to their use in the field of thin films. In this paper, we report an effective hydrothermal method to prepare three-component carbon dots (Im-CDs) from sodium citrate, ethylenediamine, and imidazole and then modify the surface to obtain the final product (AOT-CDs) by docusate sodium. The AOT-CDs exhibited a strong UV absorption capacity to UVA and UVB but a transmittance in the visible region both in solution and in polymers. In addition, docusate sodium is regarded as a suitable surface modifier to transfer Im-CDs from water to various organic solvents. When the excellent oil-soluble AOT-CDs are applied to a polyethylene film, the properties of the films, including the efficiency of UV shielding, mechanical property, and aging time, can be effectively tuned by changing the concentration of AOT-CDs. Our full-band UV-shielding films with CDs show no obvious degradation in the process of accelerated UV aging for dozens of days. Due to their ecofriendliness and good chemical and thermal stability in films, AOT-CDs are expected to become competitive candidates for next-generation UV absorbents.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2017
·
IF 4.233
Ailin Gao,Fu Liu,Zhu Xiong,Qing Yang
Superhydrophobic membranes with tunable adhesion have attracted intense interests for various engineering applications. In this work, superhydrophobic sustainable poly (lactic acid) (PLA) porous membrane with tunable adhesive force from 101 μN to 29 μN was successfully fabricated via one-step phase separation method. The incorporation of Perfluoro-1-decene (PFD) into the PLLA/PDLA membrane via the in situ polymerization can facilely tune the PLLA/PDLA stereocomplex crystallization during phase inversion, which consequently caused the unique morphology blooming evolution from bud to full-blown state. The resulted membrane showed tunable pore size, porosity, surface area, surface roughness and superhydrophobicity, which enabled the membrane with controlled-release of oil soluble drugs.
研究领域:
材料科学
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药物递送
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生物医学工程
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
·
IF 9.965
Hongling Fang,Yi Li,Songwei Zhang,Qi Ding,Litian Hu,Kuan Lu
Hypothesis Ionic liquids (ILs), as lubricant additives , can greatly improve the lubricating behavior of the frictional interfaces. However, it is urgent to explore ILs with good oil solubility in nonpolar oils, and it is necessary to further study and verify the lubrication mechanism of ILs from the perspective of alkyl chain length. Experiments Five protic ILs (PILs) with varying alkyl chain lengths were synthesized by proton transfer method. As additives in PAO oil, their tribological properties were investigated on SRV-V tester. Through molecular dynamics simulation , the adsorption behavior of PILs at the frictional interface was illustrated. Findings The tribological properties of base oil could be significantly improved by adding PIL additives, but interestingly, PILs with short-chain anions showed better lubricating performance, which contradicted most of the early findings. Further analyses revealed that PILs achieved effective lubrication by the tribochemical interaction between anions and frictional interface, and the formation of cationic protective layer. However, PILs with shorter-chain anions form a denser protective layer that can better support the interfacial anions to participate in tribochemical reactions and thus abnormally exhibit superior lubricating performance than those with longer-chain anions.
研究领域:
材料科学
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化学工程
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DOI
PubMed
高影响因子
Foods
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2021
·Vol. 10
·期 11
·2810
·
IF 4.35
Xinpeng Yan,Zhong Zhang,Runguang Zhang,Tian Yang,Guoying Hao,Li Yuan,Xingbin Yang
Given the imperative of monitoring organophosphorus pesticides (OPs) residues in the ecosystem, here a novel, facile and sensitive fluorescence sensor is presented for the rapid detection of dimethoate. In this work, surface molecularly imprinted polymer (SMIP) and microfluidic technology had been introduced to enhance the selectivity and portability of the described methodology. Oil-soluble CdSe quantum dots (QDs) synthesized in a green way were used as fluorescent material for the selective detection of dimethoate on the basis of static quenching and photoinduced electron transfer mechanism. Among many kinds of paper materials, glass fiber paper was used as the novel substrate of paper chip due to low pristine fluorescence and better performance when combining CdSe QDs. In the process of molecular imprinting, the interaction between several functional monomers and dimethoate molecule was investigated and simulated theoretically by software to improve the selectivity of the sensor. Consequently, the fabricated novel detection platform could effectively respond to dimethoate in 10 min with the concentration range of 0.45–80 μmol/L and detection limit of 0.13 μmol/L. The recovery in the spiked experiment soybean sample was in an acceptable range (97.6–104.1%) and the accuracy was verified by gas chromatography-mass spectrometry, which signified the feasibility and potential in food sampling.Keywords:oil-soluble CdSe QDs;dimethoate;microfluidic paper chip;fluorescence sensor
研究领域:
分析化学
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食品安全
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
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2022
·Vol. 102
·期 15
·7115-7125
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IF 4.125
Wen-Sen He,Yuying Sun,Zhishuo Li,Haonan Yang,Junjie Li,Qingzhi Wang,Chen Tan,Bin Zou
BACKGROUND α-Lipoic acid has excellent antioxidant activity, but its poor lipid solubility greatly limits its practical application. This study was undertaken (i) to develop a novel and efficient enzymatic synthesis of lipophilic lipoic acid esters using Candida sp. 99-125 lipase as a catalyst; and (ii) to systematically evaluate their antioxidant potential against bulk oil, oil-in-water emulsion (O/W) and cooked ground meat. RESULTS Lipophilic lipoic acid esters were successfully and efficiently synthesized using phytosterols as acyl receptor in the presence of Candida sp . 99-125 lipase. The product was identified as phytosterol lipoate by mass spectrometry, Fourier transform infrared spectroscopy and nuclear magnetic resonance. The maximum conversion of phytosterol lipoate surpassed 90% within 12 h and its final yield exceeded 81%. Interestingly, the oil solubility of lipoic acid was increased at least 25-fold and other physicochemical properties were significantly improved. Most importantly, phytosterol lipoate exhibited higher antioxidant activity than lipoic acid in bulk oil, O/W emulsions and cooked ground meat. CONCLUSION The antioxidant capacity of lipoic acid can be significantly enhanced by esterification with phytosterols. Therefore, phytosterol lipoate could be further developed as a new antioxidant for use in oil- and fat-based foods. © 2022 Society of Chemical Industry.
研究领域:
食品科学
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生物化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF FOOD SCIENCE
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2014
·Vol. 79
·期 10
·C1886
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IF 1.791
Lingyi Liu,Boneng Xia,Cheng Jin,Yu Zhang,Ying Zhang
en This link goes to a English section pt This link goes to a English section Antioxidant of bamboo leaves (AOB) is a novel natural food antioxidant approved in China since 2004. Natural phenolics contained in the current AOB are usually polyhydroxy derivatives exhibiting hydrophilic character, which has been marked as water-soluble AOB (AOB-w). In order to broaden the application fields, oil-soluble AOB (cAOB-o) was obtained by chemical acylation of AOB-w with different chain-length fatty acids varying from C8 to C18. Results indicated that the yield and solubility of cAOB-o in 1-octanol solvent depended on the carbon chain length of acyl donor, and cAOB-o derived from C12 fatty acid exhibited the more powerful antioxidant activity evaluated by β-carotene/linoleic acid bleaching assay. Total phenolic content decreased by Folin–Ciocalteu assay. Fourier transform infrared spectra showed the increase of a carbonyl (C = O) peak at 1701 cm −1 and a decrease in the intensity of the absorption at 3400 cm −1 (O-H stretching) in cAOB-o. Acylation was inferred to mainly occur on the hydroxyl groups of flavones C -glycosides according to the change of high-performance liquid chromatography spectra and the contents of total flavonoids and phenolic acids. cAOB-o with the addition of 0.02% significantly increased oxidative stability of palm oil 1.59 times, lard 3.74 times, and fried potato chips 2.08 times, which was better than the effect of oil-soluble tea polyphenol ( P < 0.01). Moreover, cAOB-o was identified to be actually nontoxicity by an acute oral toxicity test. All the above results indicated that cAOB-o could be used as a novel and effective oil-soluble antioxidant in the food industry. Practical Application en This link goes to a English section pt This link goes to a English section Oil-soluble antioxidant of bamboo leaves (cAOB-o) was obtained by chemical acylation with water-soluble AOB (AOB-w) and different chain-length fatty acids. The solubility of cAOB-o in 1-octanol solvent increased sharply. cAOB-o was able to increase the oxidative stability of palm oil, lard, and fried potato chips. cAOB-o has been identified to be actually not toxic by acute oral toxicity test. All the results indicated that cAOB-o could be used as an effective oil-soluble antioxidant in the food industry.
研究领域:
食品科学
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生物化学
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DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2024
·
IF 5.3
Mingfa Ren,Hongling Fang,Lei Liu,Songwei Zhang,Qinglun Che,Litian Hu
Ionic liquids (ILs) are characterized by their exceptional friction reduction and anti-wear properties, especially those with simple structures and low melting points, which broaden their applicability. In this work, a low melting point binary ionic liquid was designed by simply blending two solid ILs together at room temperature, resulting in a new ionic liquid deep eutectic solvent (IL-IL DES). Molecular dynamics simulation provided further insights into the formation mechanisms of IL-IL DES by analyzing the interactions within the system. Tribological tests confirm that IL-IL DES with good oil-solubility significantly improve the lubrication performance of base oil when used as additive. Notably, the IL-IL DES phosphorus content in base oil was half that of its individual components, yet it maintained substantial friction reduction effect. Furthermore, IL-IL DES still maintains good lubrication performance in a wide temperature range (−20 °C to 150 °C), which can effectively meet the operational conditions of most mechanical components.
研究领域:
材料科学
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化学工程
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机械工程
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产品关联
DOI
高影响因子
TRIBOLOGY INTERNATIONAL
·
2019
·
IF 3.517
Zhengquan Jiang,Guangbin Yang,Yujuan Zhang,Chuanping Gao,Jingyi Ma,Shengmao Zhang,Pingyu Zhang
Ultrathin oil-soluble tungsten disulfide nanosheets surface-capped with oleylamine (OA-capped WS 2 ) were prepared by liquid phase thermal decomposition method without any solid by-products, a facile method with potential for large-scale production. OA-capped WS 2 nanosheets exhibit good dispersibility and long-term stability in poly alpha olefin oil and significantly enhance the lubricating properties of the base oil over a wide temperature range (from 25 °C to 200 °C). This is because the surface-capped WS 2 nanosheets can be well adsorbed on friction surfaces forming a lubricating film (mainly WS 2 ) and participate in tribological chemical reaction to generate a chemical reaction film consisting of WO 3 , FeS, FeSO 4 , iron oxides , and FeOOH on the worn steel surfaces during friction process .
研究领域:
材料科学
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润滑工程
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2023
·
IF 4.4
Yuexia Zhang,Xiaopeng Fan,Xuansen Sun,Xintong Yang,Zhongping Li,Zhenhua Yang,Chuan Dong
The overuse of doxycycline poses a risk for ecological environment. Advanced materials such as anti-counterfeiting and photovoltaic materials are urgently needed to develop innovative strategies for exploiting solar cells and protecting valuable products. Herein, oil-soluble CDs (o-CDs) were successfully fabricated from citric acid, tris-base and oleylamine as precursors via pyrolysis method. The o-CDs with uniform size distribution exhibited a high quantum yield of 0.48 and excellent photostability. The fluorescence of o-CDs was rapidly quenched by doxycycline at room temperature without further modification. Optimal conditions were selected to construct a fluorescence probe with high selectivity and good sensitivity to detect doxycycline. Interestingly, the probe achieved two linear ranges of 0.85––16.7 µM and 16.7––33.4 µM with a low detection limit of 0.26 µM. Furthermore, inner filter effect (IFE) was dominated in the process in which doxycycline interact with the oxygen-containing groups of o-CDs. This sensing platform has been further successfully applied to the detection of doxycycline in milk with recovery rates of 96.8%- 102.7% and relative standard deviations of 0.98%- 1.02%, suggesting that the novel probe has the potential to be applied in real samples. Moreover, o-CDs directly serve as fluorescence ink and work as fluorescence film using PVA as matrix because of strong fluorescence in the solid state, indicating that they have potential applications in anti-counterfeiting and photovoltaic materials. This is the first report that oil-soluble CDs via pyrolysis is applied in the detection of doxycycline in milk. Importantly, this work provides efficient strategies for the construction of anti-counterfeiting and photovoltaic materials.
研究领域:
环境科学
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材料科学
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分析化学
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生物医学
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DOI
PubMed
高影响因子
TRIBOLOGY INTERNATIONAL
·
2022
·
IF 5.62
Hongling Fang,Yi Li,Songwei Zhang,Qi Ding,Litian Hu
In this work, the functional protic ionic liquid (PIL) of dibutylammonium 3-(methylthio) propionate ([N44HH][MTP]) with good lubrication properties but poor oil solubility and the common PIL of dioctylammonium oleate ([N88HH][OA]) with good oil solubility but poor lubricating performance were selected. The binary ionic liquid (BIL) of [N88-N44][OA-MTP] was creatively obtained by combining [N44HH][[MTP] with [N88HH][OA]. Interestingly, the BIL has good oil solubility in PAO base oil and maintains outstanding lubricating performance, indicating that such an approach improves the oil solubility of functional PILs without worsening lubrication properties. In addition, the compatibility between two PILs and the lubrication mechanism of the BIL system were analyzed and described by means of several analytical methods.
研究领域:
化学工程
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材料科学
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产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Wen-Jian Zhang,Meng-Xin Fan,Jia-Qing Li,Xiao-Yu Cao,Jian-Chun Jiang,Zi-Xuan Chang,Wei Bai,Ren-Man Zhu,Chun-Yan Hong
Reinforcement of polymeric materials by incorporating rigid nanofillers (especially nanofibers) is a promising strategy, which mainly relies on the elaborate design of nanofillers. Herein, we report an oil-soluble and core-cross-linked fibrous nanofiller with superior comprehensive properties. In situ cross-linking polymerization-induced self-assembly (PISA) in mineral oil is demonstrated to be a powerful strategy for producing oil-soluble nanofibers with excellent reproducibility (100% in 10 repeated experiments). The oil-soluble stabilizer enables good compatibility of the nanofibers with various hydrophobic polymer matrices, and the core-cross-linked structure endows the nanofibers with robust stability to resist the severe processing environment (high temperature and high shearing) of fabricating polymer–nanofiller composites. The nanofibers show superior reinforcement effects on the polymer–nanofiller composites but without the expense of transparency, recyclability, and self-healing ability. With only 1 wt % dosage of the nanofibers, the tensile stress, elongation, and toughness of the polymer–nanofiller composites increased by approximately 2.6, 3.5, and 7.2 times, respectively. The oil-soluble and core-cross-linked nanofibers based on the in situ cross-linking PISA strategy are attractive candidates of nanofillers to reinforce plastics, gels, or elastomers in various industrial applications, which not only have excellent comprehensive performances but also meet the requirements of sustainable development.
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
高影响因子
ADVANCED ENGINEERING MATERIALS
·
2022
·Vol. 24
·期 9
·2101602
·
IF 4.122
Jing Cheng Lv,Ji Ping Zhang,Ming Yu Wu,Hang Yin,Guan Qun Liang,Chen Hui Zhang,Yin Tao Wei
Magnetorheological fluid (MRF) is a widely utilized intelligent material that faces the in-use thickening (IUT) problem caused by wear. As commonly being used polar antiwear agents aggravate the sedimentation of MRF, a new method to improve the tribological properties of MRF using nonpolar oil-soluble graphene rather than polar additives is proposed. Orthogonal and control experiments conducted with a four-ball machine show that oil-soluble graphene greatly improves the antiwear performance of MRF. More specifically, the MRF with oil-soluble graphene reduces wear volume up to about 90% compared with all control experiments, including blank samples without any additives, the samples with the surfactant but without graphene, and the ones with the commercial antiwear agent ZDDP. The results also indicate that both lubricant and MRF get the best antiwear effect when graphene concentration in the base oil is 2 mg ml −1 . This implies that oil-soluble graphene improves the tribological properties of the systems primarily by enhancing the pressure-bearing capacity of the carrier fluid. Moreover, oleophilic graphene increases the magnetorheological effect of MRF and reduces its off-state viscosity by about 4% through isolating particles and filling gaps. In summary, the proposed method can solve the IUT problem of MRF along with ensuring its performance.
研究领域:
材料科学
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机械工程
·
摩擦学
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DOI
高影响因子
危险品化学品经营许可证（带存储）