CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Yuanyuan Xu,Ying Wang,Xiaoqian Zhou,Dong Wang,Qingbo Wang,Zefang Xiao,Yanjun Xie,Yonggui Wang
Quaternized cellulose ester (Q y CE) with tunable alkyl chain lengths was synthesized via esterification followed by the Menshutkin reaction. By direct blending of Q y CE and dopamine (DA), water-soluble and transparent DA/Q y CE complexes were prepared. Q y CE effectively restricted covalent polymerization and non-covalent self-assembly of polydopamine (PDA) through steric confinement, cation–π interactions, hydrophobic interactions, and hydrogen bonding. This confinement resulted in enhanced fluorescence of the DA oligomer/Q y CE multifunctional complexes. The DA oligomer/Q y CE films formed after drying also exhibited outstanding tensile strength (~45.64 MPa). Furthermore, the resulting samples demonstrated excellent antioxidant activity with a DPPH radical scavenging rate exceeding 93 %, and strong antibacterial activity against Staphylococcus aureus (~99.90 %) and Escherichia coli (~100.00 %). Consequently, as a water-soluble coating material, the complexes effectively reduced dehydration shrinkage and oxidative deterioration of fruits, significantly extending their shelf life. The fluorescence of the film is sensitive to iron ions, enabling pattern design for anti-counterfeiting applications. These findings highlight that DA oligomer/Q y CE multifunctional complexes serve as a versatile and sustainable platform with potential in both food preservation and anti-counterfeiting.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Weiwei Han,Tianyu Shi,Chao Ma,Chenwei Liu,Sanbao Dong
Foam drainage is a critical technique for enhancing gas production in water-producing natural gas wells during mid-to-late operational stages. In this study, we hypothesized that constructing a pseudo-Gemini supramolecular surfactant complex through non-covalent interactions between a hydroxy tertiary amine (HTA) and 2-hydroxyterephthalic acid (HTPA) would significantly enhance foam stability and liquid-carrying performance under harsh downhole conditions. To realize this, we developed a novel five-component foam drainage agent by integrating the HTA/HTPA complex with cocamidopropyl betaine (CAPB), α-olefin sulfonate (AOS), and sodium carboxymethyl cellulose (NaCMC). The optimized molar ratio and total dosage of HTA:HTPA:AOS:CAPB:NaCMC were found to be 12:6:42:40:25 and 15 mM/L respectively, at which this foaming system exhibited a foaming volume of 390 mL and a half-life time of 23.07 min. Critically, liquid-carrying rate tests demonstrated that moderate contents of condensate and methanol enhanced drainage efficiency, the presence of 30 % condensate yielded a liquid-carrying rate of 43.06 %, while the presence of 20 % methanol increased it to 47.10 %. Remarkably, the system maintained 100 % foaming efficiency over a wide range of methanol or condensate concentrations (0–50 % v/v). This foaming system also exhibited excellent tolerance to salinity (up to 300 g/L, enabled by nitrilotriacetic acid) and temperature (up to 90 ℃), at which produced a liquid-carrying rate of 91.98 % while foaming efficiency remained at 100 % across 20–90 ℃. Besides, surface tension measurements, shear viscosity tests, microscopic foam morphology analysis, interaction energy calculations, and electrostatic surface potential analyses confirmed strong synergistic effect among the components. These findings validate the rational design of the supramolecular system and underscore its high potential as a novel foam drainage agent for efficient gas well deliquification.
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2026
·
IF 4.5
Yu Fang,Qi Shi,Jinping Qu,Xiang Lu
Efficiently integrating solar and ambient thermal energy within a single molecular system remains a significant challenge. Here we systematically construct a family of azobenzene-based molecules in which photoisomerizable cores are covalently coupled with thermally active alkyl and alkenyl segments. Unlike previous studies focusing on isolated examples, our approach establishes a homologous molecular series that enables direct correlation between structural parameters and dual-mode energy storage behavior. Upon ultraviolet irradiation, the trans -cis isomerization induces lattice disorder and photo‐liquefaction, allowing simultaneous capture of photon energy and latent heat. The reverse process triggered by light or heat releases both chemical and phase-change enthalpies in a single synergistic step. The system exhibits a gravimetric energy density exceeding 300 J g −1 , demonstrating a competitive performance among reported materials. Combined density functional theory and calorimetric analyses quantitatively link the isomerization energetics with crystal packing variations, establishing a predictive relationship between molecular design and thermophysical performance. This systematic strategy provides a data-driven framework for designing programmable photothermal materials and paves the way for high-throughput molecular energy computation.
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2026
·Vol. 31
·期 15
·2717
·
IF 5.1
Shuiwang Jiang,Yuyi Zhu,Xiangfeng Chen,Hongyi Liu,Xuezhi Jiang,Yahao Zhang,Hui Gong,Ting Huang,Dengfeng Zeng,Quan Liu
Conventional polydimethylsiloxane (PDMS)-based antifouling coatings, despite their inherent fouling-release capability, exhibit critically insufficient antifouling performance under static seawater conditions. Inspired by the synergistic physical–chemical defense strategy of sessile marine organisms, specifically sea anemones, which combine a physical mucus barrier with antimicrobial peptide secretion, the present work develops a multi-mechanism hybrid coating—designated as sea anemone-inspired fluorosilicone polyurethane—that integrates low-surface-energy physical antifouling and cationic antibacterial chemical antifouling. This coating system is constructed from silicone polyurethane (PDMS-PU), a cationic antibacterial moiety (PDMS-N+), and fluorinated functional monomers. Through systematic compositional optimization, an optimal formulation (P-4) is identified, which achieves a fracture elongation of 78.19%, a normal adhesion strength of approximately 2.5 MPa, a water contact angle of 120°, and a surface energy of 12.86 mN/m. Notably, its antibacterial rates against both Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) exceed 95%. The resultant coating uniquely synergizes low surface energy, potent antibacterial activity, excellent mechanical properties, and thermal stability, thereby enabling long-term and stable antifouling performance in static seawater environments. This work provides a crucial technological foundation for the engineering application and industrialization of green, durable marine antifouling coatings.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Han Jia,Haidong Jia,Qiuxia Wang,Hui Yan,Xu Li,Bowen Wang,Shaoyan Wang,Yuanbo Wang,Qiuyu Xie,Lin Song,Kaihe Lv,Pan Huang
Ionic liquids (ILs) are incredibly efficient additives to solve wellbore instability resulting from shale hydration. The influence of the molecular structure of ILs on their inhibition performance has been investigated intensively, and hydroxyl is regarded as the significant group to improve their inhibition performances. In this study, three novel dihydroxyl ionic liquids (DHILs) including [C 4 DIPA]Br, [C 8 DIPA]Br, and [C 12 DIPA]Br were successfully synthesized. Then their thixotropy and inhibition properties were evaluated via three-interval thixotropy tests (3ITTs), hot-rolling recovery tests, immersion tests, and linear swelling tests. [C 12 DIPA]Br exhibited the optimal inhibition ability at a low concentration (0.5 wt%) and was more effective than the conventional inhibitor KCl (2 wt%). Various techniques were used to analyze the inhibition mechanism of DHILs including contact angle measurements, zeta potential , X-ray diffraction, and Flourier transform infrared spectroscopy . The results demonstrated that the synergistic effects of hydrogen bonding , electrostatic interaction, and hydrophobic shield should be responsible for the excellent inhibition performance and great thermal stability of [C 12 DIPA]Br. Finally, the proposed mechanism was supported by the control experiments using other three ILs inhibitors and molecular dynamics simulation . Our work provided unique perspectives on developing rationally designed and efficient ILs inhibitors.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2023
·
IF 6
Zejun Zhang,Zhansheng Wang,Hua Zhang,Qingji Wang,Yuqi Tang,Qian Qu,Liwei Shen,Yuanzhu Mi,Xuemin Yan
In this paper, an ionic liquid demulsifier (MDBr-IL) with double cationic centers and multiple hydrophobic chains was synthesized with N,N,N,N,-tetraglycidyl- 4,4-diaminodiphenylmethane as starting materials. The structure of MDBr-IL was characterized by Fourier transform infrared spectrometer (FT-IR) and 1 H nuclear magnetic resonance spectrometer ( 1 H NMR). Effect of a few key factors such as concentration, demulsifying time, demulsifying temperature, salinity and pH value on the demulsifying efficiency (DE) was detailly researched in a water-in-crude oil emulsion. When the concentration of MDBr-IL was 500 mg/L, the DE reached 95.24% at 60 °C for 180 min. Also, the DE could increase to 98.64% when the demulsifying temperature was 70 °C. In addition, MDBr-IL had an eminent resistance to acid, alkali and salt. Also, the salinity could further improve the demulsification performance. Interfacial properties and wettability were employed to investigate the possible demulsification mechanism. It demonstrated that MDBr-IL is a viable demulsifier for the separation of oil-water emulsions.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2023
·
IF 3.8
Rongting Guo,Wei Li,Xiaoyan Wang,Yiju Lv,Mengqi Chen,Zesheng Chen,Zheng Liu,Guo-Cheng Han
In order to effectively inhibit microbial corrosion, the compounds of Schiff base quaternary ammonium salt (SQAS) and graphene oxide (GO) were used as filler added into the epoxy resin coating. The mechanical, hydrophobic and anti-microbial corrosion properties in simulated seawater of SQAS-GO inhibitor coating on carbon steel were investigated by grid test, contact angle test, electrochemical test and surface topography analysis, respectively. These results suggested that 0.5% SQAS-GO strengthened the anti-microbial corrosion performance of the epoxy resin coating. The electrochemical test results also demonstrated that the impedance value of the 0.5% SQAS-GO coating (6.31 ×10 10 ohm cm 2 ) was two orders of magnitude higher than that of the pure epoxy coating (1.09 ×10 8 ohm cm 2 ) after being immersed in simulated seawater for 14 days. Moreover, molecular dynamics simulation of inhibitor provided the theoretical support for the experimental results.
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 20
·3636
·
IF 5.719
Jianchao Gong,Tingting Wang,Wei Zhang,Lin Han,Mingxiao Gao,Tianen Chen,Tao Shen,Yaxiong Ji
To explore the effect of spacer structure on the adsorption capability of organo-vermiculites (organo-Vts), a series of aza-containing gemini surfactants (5N, 7N and 8N) are applied to modify Na-vermiculite (Na-Vt). Large interlayer spacing, strong binding strength and high modifier availability are observed in organo-Vts, which endow them with superiority for the adsorption of 2-naphthol (2-NP) and bromophenol blue (BPB). The maximum adsorption capacities of 5N-Vt, 7N-Vt and 8N-Vt toward 2-NP/BPB are 142.08/364.49, 156.61/372.65 and 146.50/287.90 mg/g, respectively, with the adsorption processes well fit by the PSO model and Freundlich isotherm. The quicker adsorption equilibrium of 2-NP than BPB is due to the easier diffusion of smaller 2-NP molecules into the interlayer space of organo-Vts. Moreover, stable regeneration of 7N-Vt is verified, with feasibility in the binary-component system that is demonstrated. A combination of theoretical simulation and characterization is conducted to reveal the adsorption mechanism; the adsorption processes are mainly through partition processes, electrostatic interaction and functional interactions, in which the spacer structure affects the interlayer environment and adsorptive site distribution, whereas the adsorbate structure plays a role in the diffusion process and secondary intermolecular interactions. The results of this study demonstrate the versatile applicability of aza-based organo-Vts targeted at the removal of phenols and dyes as well as provide theoretical guidance for the structural optimization and mechanistic exploration of organo-Vt adsorbents.Keywords:organo-vermiculite;aza-containing gemini surfactant;2-Naphthol;bromophenol blue;adsorption
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2022
·Vol. 13
·期 1
·239-250
·
IF 4.036
Hao Zhang,Lixian Xu,Xiaoxiao Gu,Dinghua Yu,Shuang Li
The aggregation state of photosensitizers on the surface of bacterial cells is an important scientific problem for antibacterial photodynamic therapy (APDT). High accumulation and high photoactive state maintenance of photosensitizers are the prerequisite of high APDT efficiency. In this study, an amphiphilic di-cationic methylene blue photosensitizer (C12-MB) was synthesized through quaternization, and its structure, interface properties, photophysical properties and antibacterial photodynamic properties were studied. The results showed that C12-MB could reduce 4.27 log10 CFU and 4.8 log10 CFU for P. aeruginosa and S. aureus under irradiation of light at 660 nm, higher than the parent methylene blue. Through a spectroscopic study on photosensitizer adsorption over the bacterial surface, C12-MB can be accumulated with higher concentration, and the photo-active monomer content is 73% and 70% over P. aeruginosa and S. aureus, higher than those of methylene blue: 25% and 49%, respectively. The higher content of non-aggregated photo-active monomer could contribute to higher antibacterial photodynamic efficiency. For C12-MB adsorbed over bacterial surfaces, planar packing inhibition and electrostatic repulsion could contribute to lower C12-MB aggregation, which provides an useful reference for the structural design of high-efficiency photosensitizers.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 21
·3879
·
IF 5.719
Hongqiang Dong,Yuke He,Chen Fan,Zhongqiang Zhu,Chunrong Zhang,Xinju Liu,Kun Qian,Tao Tang
Based on high surface areas, adjustable porosity and microbicide activity, metal-organic frameworks (MOFs) HKUST-1 are widely used as drug release carriers for their slow degradation characteristics under slightly acidic conditions. In this work, porous HKUST-1 was reacted rapidly by cholinium salt (as the deprotonation agent and template) in an aqueous solution at room temperature. A novel antimicrobial system based on an imazalil encapsulated metal organic framework (imazalil IL-3@HKUST-1) was established. Imazalil IL-3@HKUST-1 could achieve synergism in inhibiting pathogenic fungi and bacteria. Moreover, six days after treatment, the slow and constant release of imazalil from imazalil IL@HKUST-1 exhibited better sustainability and microbicidal activity than imazalil. We believe that the method may provide a new strategy for related plant diseases caused by bacteria or fungi.Keywords:imazalil;ionic liquid;HKUST-1;antimicrobial activity;safety
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
·
2022
·Vol. 43
·期 6
·2100717
·
IF 5.006
Zui Liu,Guangqiang Guo,Junqiu Liao,Yongjie Yuan,Hailiang Zhang
Photoresponsive liquid crystal elastomers (LCEs) have aroused much attention due to their unique structures, properties, and potential applications. However, many reported photoresponsive LCEs show small photoinduced deformation with a slow deformation speed, which limits their application to a certain extent. In this article, multiple hydrogen bond component and biphenyl component was introduced into photoresponsive LCEs bearing cyanostilbene by copolymerization, and prepared a series of LCEs CSm-BPn (CS and BP means cyanostilbene and biphenyl component, respectively; m, n means the content ratio of CS and BP). All uniaxially oriented CSm-BPn fibers show photoinduced deformation behavior under 365 nm UV light except for CS0-BP5. The introduction of hydrogen bond and the decrease of glass transition temperature realize large deformation and fast deformation speed. Besides, the properties of LCEs are successfully regulated by changing the content ratio of each component. What's more interesting is that the addition of appropriate amount of biphenyl can significantly improve and manipulate the deformation property of the CSm-BPn fibers. The maximum bending angle can reach 175 ° , and the whole photoinduced deformation process only takes 11 s. The photoresponsive LCEs with such large bending angle and fast deformation rate are rarely reported.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TRIBOLOGY INTERNATIONAL
·
2022
·
IF 5.62
Qianqian Yan,Haojie Ma,Rui Dong,Yunyun Yan,Ping Wen,Mingjin Fan
In this work, multiple interactions are considered to designedly synthesize salicylate derivatives as lubricants (S-C6, S-C8 and S-C10), and explore their effects on lubrication performances on steel-steel mating surfaces, compared to commercial isooctyl sebacate lubricant (1088). The optimal reduction by 13.3% in coefficient of friction and 70.2% in wear volume is achieved. The hypothetical lubrication mechanism reveals that cooperation of multiple interactions including coordination, cation···π, π···π stacking and van der Waal probably exists to drive salicylate molecules into forming a robust and thickened lubrication film with multi-layered structures shearing easily, which ensures the excellent lubrication. In contrary, either weak coordination or/and van der Waal’s interactions exists for 1088. This finding will push forward the recognition of lubrication explorations into the molecular level.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）