Journal of Environmental Chemical Engineering
·
2025
·Vol. 14
·期 1
·120981
·
IF 7.2
Xiaohan Meng,Junfan Niu,Qing Guo,Gang Tang,Gaohua Hu,Weiyao Yan,Xiaohong Zhang,Yuqi Huang,Jianhua Xiao,Yongqian Liang,Ruyue Han,Guangyao Yan,Jianqiang Li,Yongsong Cao
To mitigate the dependency on toxic auxiliary agents in pesticide formulations and enhance bioactivity, a novel functional polymeric micelle carrier was engineered through the synthesis of graft-modulated, amphiphilic quaternary ammonium polyethyleneimine (QPEI). A series of QPEI polymers were synthesized by conjugating polyethyleneimines (PEIs) of varying molecular weights (600, 1800, and 10,000) with different acyl chlorides (palmitoyl, propionyl, and benzoyl). From this library, pal-QPEI 600 emerged as the optimal candidate to encapsulate the hydrophobic fungicide pyraclostrobin (PYR) for preparation of pesticide-loaded micelles (PYR@QPEI) duo to the highest quaternization degree, the lowest surface tension (35.04 mN/m), and the most potent antimicrobial activity. The resulting PYR@QPEI micelles were spherical and regular nanostructure with loading capacity of 7.02 % and superior interface performance on plant leaves and exhibited pH-responsive release behavior. In both in vitro and in vivo assays, PYR@QPEI showed good antifungal efficacy against Sclerotinia sclerotiorum compared to a commercial PYR suspension concentrate. The synergistic ratio between PYR and QPEI was calculated to be 1.74, confirming a synergistic antimicrobial effect. Furthermore, PYR@QPEI exhibited good storage stability, enhanced photostability, and high safety for plants with no significant genotoxicity. This study presents a smart, effective, and environmentally friendly nanopesticide delivery platform that reduces the need for toxic auxiliaries.
研究领域:
高分子科学
·
农药学
·
纳米医学
·
植物保护
·
药物递送系统
·
环境友好材料
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DOI
高影响因子
ACS Applied Polymer Materials
·
2026
·
IF 5.2
Huang Yanmin,Chen Yanlin,Li Jiansheng,Hu Qiang,Liu Zhiping,Xiong Qipeng,Gan Chunfang,Cui Jianguo
A β-cypermethrin
(CY) nanoformulation (CY@β-CDs/SE)
was constructed via a dual-carrier coencapsulation strategy utilizing
β-cyclodextrin octadecanoate (β-CDs) and starch hexadecanoate
ester (SE). This system leverages the host–guest inclusion
of pesticide molecules within the hydrophobic cavity of β-CDs,
followed by assembly with SE into an outer barrier via hydrophobic
interactions between β-CD and SE side chains, supplemented by
van der Waals forces and interfacial hydrogen bonding. The formulation
significantly enhanced the stability of the active ingredient, exhibiting
a thermal storage degradation of 3.47%, which was 20.4% and 59.0%
lower than those of the single-carrier CY@β-CDs and CY microemulsion
(CYm), respectively. The photolysis half-life ( T 50 ) of CY@β-CDs/SE reached 76.2 h, representing a 75%
and 127% extension compared to CY@β-CDs and CYm, respectively.
Sustained-release studies demonstrated a cumulative release of 79.0%
after 302 h in 20% methanol–water, and release increased markedly
under alkaline (pH = 9) or elevated temperatures (45 ° C), with
dual pH/temperature-responsive behavior. CY@β-CDs/SE maintained
68% insecticidal lethality 25 days postapplication, outperforming
CY@β-CDs (48.0%) and CYm (34.7%). Furthermore, CY@β-CDs/SE
substantially improved the biosafety of β-cypermethrin, achieving
a 96h LC 50 value of 24.7 μg/L in zebrafish , 2.1-fold higher than that of CYm (11.7 μg/L), while also
enhancing the biosafety for rice seed germination. This study establishes
an intelligent delivery system using biodegradable materials, offering
a strategy for pesticide reduction and advancing sustainable agricultural
practices.
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Advanced Science
·
2026
·
IF 14.1
Wenqing Zhang,Jinhui Xu,Bo Li,Yao Li,Yue Zhang,Zhishu Tang,Huaxu Zhu,Jingwei Hou
Janus membranes (JMs) promise advanced liquid separations, but fabrication speed, substrate universality, and precise configurational control remain challenging. Here, we report an ultrafast and universal interfacial engineering strategy to construct JMs with desirable micro-nano structures. Founded on a rapidly formed tannic acid/polyethyleneimine (TA/PEI) platform, the approach utilizes highly reactive stearoyl chloride (SC) for minute-scale hydrophobic modification. Crucially, a novel physicochemical control principle is revealed. Specifically, interfacial wettability and tension are modulated at the molecular level by phytic acid (PA). Through this modulation, the membrane's physical immersion depth is governed to provide unprecedented, quantifiable control over hydrophilic layer thickness during liquid-liquid interface modification. This enables tailored JMs exhibiting pronounced asymmetric super-wettability (water contact angle (WCA) difference >157°) and tunable unidirectional liquid transport. Demonstrated across diverse metallic and polymeric substrates, the resulting JMs show remarkable separation performance for challenging mixtures, alongside exceptional stability. This facile and controllable strategy overcomes previous limitations in speed, universality, and regulation of asymmetric configurations, offering a versatile platform for designing nano-engineered functional materials for sophisticated liquid separation applications.
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JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Wenhui Hu,Zhipeng Yan,Jianyang Jia,Qiangqiang Song,Taoning Fan,Qin Shen,Kecheng Guan,Xueling Wang,Yuqing Lin,Jing Wang,Hideto Matsuyama,Yatao Zhang
Covalent organic frameworks (COFs) with tunable porous network structures afford unheard-of opportunities for high-efficient solvents-resistant molecular separation. Presently, the practicability of COFs membranes is critically constricted by its inflexible essence, weak interlaminar interaction and wider pore size, enabling the arduous preparation of defect-free membranes. In this work, a series of composite nanofiltration membranes were formed via a mixed dimensional assembly of COF-TAPT-BTA nanosheets and silk nanofibrils (SNF). The SNF with large aspect ratio and well-supplied functional groups effectively reduced the pore entrance of COF-TAPT-BTA (shielding effects) and intensified membrane's integrity. The interweaving and interlocked nanopore render the resultant COF@SNF-X membranes with precise molecular sieving abilities besides the augmented stability arose from the multiple interaction. Accordingly, the optimized COF@SNF-X membrane manifested an ultrahigh methanol permeance of 1365.5 L m −2 h −1 bar −1 with a high rejection of 96.0 % for DR 23.
研究领域:
材料科学
·
化学工程
·
膜技术
·
分离科学
·
纳米技术
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Fukang Deng,Kangchun Li,Hao Luo,Fangxue Hang,Debao Niu,Kedi Yang,Fuchuan Huang,Kai Li
The synthetic lubrication materials have been properly developed. However, it is still faced with problems such as poor sustainability and insufficient lubrication performance. Therefore, it is of great significance to develop sustainable lubricants and reveal the key factors affecting their lubrication. On this basis, a new class of natural arbutin derivatives were prepared. The friction coefficients of 0.5 wt % 6-O–Decanoyl-Arbutin (ArC10) and 0.5 wt % 6-O–Dodecanoyl-Arbutin (ArC12) dispersions were 0.054 and 0.047, respectively, which were reduced by 65.2 and 69.7% compared with hyaluronic acid sodium salt (HA). The wear rates of 0.5 wt % ArC10 and 0.5 wt % ArC12 dispersions were reduced by 85.8 and 84.7% compared with HA, respectively. The amphiphilic arbutin derivatives could form micronano scale soft aggregation micelles in the water dispersion system, promote the self-assembly of hydration lubricating film, and effectively improve the tribological properties. In addition, the antibacterial efficiency of ArC10 and ArC12 against S. aureus was more than 99.84% and has low cytotoxicity. This work proved a new source of antibacterial biobased lubricants on a large scale.
研究领域:
生物材料学
·
摩擦学
·
纳米医学
·
再生医学
·
抗菌材料
·
生物润滑
·
分子自组装
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Xu Liu,Yuan Zhao,Cong Gao,Xiaohuan Sun,Shixin Li,Jie Han
Understanding the unique role of supramolecular chirality in nano-protein/cell interactions, as opposed to molecular chirality, is crucial for elucidating the origin of life. However, this aspect has received inadequate attention. In this study, L/D-glutamic acid-based amphiphiles (L/D-GluC16), which possess molecular chirality, were synthesized. Additionally, through the manipulation of solvent effects, left/right-handed helical nanofibers ( M / P -GluC16), endowed with supramolecular chirality, were assembled from L/D-GluC16. With the aid of molecular dynamics (MD) simulations, the interaction between M / P -GluC16, L/D-GluC16, and a model protein (bovine serum albumin, BSA) was investigated at the thermodynamic and spatial orientational levels. Combined with the experimental result of protein adsorption efficiency, a more favorable chirality-dependent binding of M / P -GluC16 to protein compared to L/D-GluC16 was confirmed. Furthermore, driven by the binding-induced conformational changes and subsequent functional disruptions of proteins, M / P -GluC16 exhibited a greater chirality-specific cancer cell inhibitory efficacy compared to L/D-GluC16, highlighting the more significant impact of supramolecular chirality on nano-protein/cell interactions than molecular chirality.
研究领域:
纳米技术
·
生物物理学
·
细胞生物学
·
计算生物学
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PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2024
·
IF 5.3
Xulin Yu,Junlei Wang,Fan Ye
Currently, most of the industrial demulsifiers are based on petrochemical-derived raw materials, which have the disadvantages of dangerous and complicated synthesizing process, low demulsification efficiency (DE) and significant environmental harm. To tackle these challenges, this study focused on synthesizing a green cationized amphiphilic cyclodextrin demulsifier (CDPA) decorated with quaternary ammonium salt and hydrophobic chain, which exhibits effectively treats oily wastewater at ambient temperature and low concentration. The bottle tests revealed that the light transmittance and the corresponding oil removal efficiency of CDPA was 93.1 % and 99.4 %, respectively. In addition, CDPA consistently maintained an excellent DE in wide pH range (3–11) and high salinity conditions. The possible demulsification mechanism of CDPA was explored in detail and the results showed that CDPA could quickly adsorb and replace natural surfactants, leading to form an unstable composite film and initiating the demulsification process. Furthermore, the positive charge of CDPA also facilitated electrostatic neutralization with the oil droplets, thereby attenuating the strength of the interfacial film.
研究领域:
环境科学
·
化学工程
·
水处理
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DOI
高影响因子
POLYMER
·
2024
·
IF 4.1
Meiying Huang,Yuyao Li,Wenting Liu,Zhipeng Zhou,Jiaxing Lu,Yonghang Yang,Zhilv Wang,Zhihua Zhou,Yuhai Zou,Wei Liu,Yuexian Hong,Zhikun Zheng
Analogous to the multilevel structure of proteins, hierarchical chiral materials have attracted much attention due to their excellent optical activity. Among them, covalent organic frameworks (COFs) with two-dimensional (2D) or three-dimensional (3D) topologies have become ideal platforms for integrating hierarchical chirality due to their modular and tunable building block. However, limited by the inherent complexity of the structure of 3D COFs, studies on their hierarchical chirality, especially helical geometry chirality, are still scarce. Herein, we report a strategy to obtain helical 3D COFs using chiral surfactants as templates in aqueous phase. The weak interactions including hydrogen bonds and electrostatic interactions between surfactants and precursors simultaneously facilitated helical curl and self-correcting crystallization of the ribbon-like precursors, resulting in the synthesis of 3D helical hierarchical chiral COFs. Notably, the chiral centers of the surfactants provide a guiding mechanism that contributes to the COFs achieving a high enantiomerically purity up to 85 %.
研究领域:
材料科学
·
化学合成
·
光学活性材料
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产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMISTRY
·
2024
·Vol. 42
·期 23
·3093-3098
·
IF 5.5
Meiying Huang,Zhipeng Zhou,Xin Dong,Yuyao Li,Yonghang Yang,Changye Zhan,Jiaxing Lu,Xiaoshu Wei,Yuexian Hong,Weiqi Cheng,Wei Liu,Zhongke Yuan,Xudong Chen,Zhikun Zheng
Comprehensive Summary Chiral covalent organic frameworks (COFs) have shown promising applications in asymmetric catalysis, enantiomer separation and chiral recognition due to their tunable structures and permanent porosity. Currently, synthesis of chiral COFs mainly relies on direct- synthesis method which requires asymmetric monomers to polymerize and crystallize with symmetric monomers and post-synthesis method which has been greatly limited to having complete reactions with the micro-/meso-sized pores of COFs. Recently, the synthesis of two-dimensional COFs by covalent replacement of chiral competitor has been reported. Herein, we present the synthesis of three types of 3D COFs with tunable chirality using chiral amino acid derivative surfactant as inducer in water under ambient conditions. The hydrogen bonds and electrostatic interactions between amino acid derivative surfactant and monomers as well as their precursors facilitate the transfer of the chirality.
研究领域:
材料化学
·
不对称催化
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DOI
高影响因子
BIOMACROMOLECULES
·
2024
·
IF 5.5
De-Fa Hou,Pei-Yao Li,Kai Zhang,Meng-Lei Li,Zi-Wei Feng,Cong Yan,Can Liu,Ming-Bo Yang
Fatty acid cellulose esters (FACE) are common cellulose-based thermoplastics, and their thermoplasticity is determined by both the contents and the lengths of the side chains. Herein, various FACE were synthesized by the ball-milling esterification of cellulose and fatty acyl chlorides containing 10–18 carbons, and their structures and thermoplasticity were thoroughly studied. The results showed that FACE with high degrees of substitution (DS) and low melting flow temperatures (Tf) were achieved as the chain lengths of the fatty acyl chlorides were reduced. In particular, a cellulose decanoate with a DS of 1.85 and a Tf of 186 °C was achieved by feeding 3 mol of decanoyl chloride per mole anhydroglucose units of cellulose. However, cellulose stearate (DS = 1.53) synthesized by the same protocols cannot melt even at 250 °C. More interestingly, the fatty acyl chlorides with 10 and 12 carbons resulted in FACE with superior toughness (elongation at break up to 94.4%). In contrast, due to their potential crystallization of the fatty acyl groups with 14–18 carbons, the corresponding FACE showed higher tensile strength and Young’s modulus than the others. This study provides some theoretical basis for the mechanochemical synthesis of thermoplastic FACE with designated properties.
研究领域:
材料科学
·
有机化学
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DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2013
·Vol. 37
·期 5
·1603-1609
·
IF 2.966
Bin Di,Lifei Cheng,Qiuling Jiang,Mengxiang Su,Weiqiang Hao
Monodispersed chiral mesoporous spheres of nanometer size with high specific area and good thermal stability were synthesized using the chiral anionic surfactant (N-palmitoyl-L-phenylalanine) as a template according to the co-structure directing agent (CSDA) method. The resulting mesoporous nanospheres were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), small angle X-ray powder diffraction (XRD) and nitrogen sorption experiments. The particle distribution was 190–210 nm with pore diameters of 3–4 nm. The enantioselective ability of this chiral mesoporous silica, after extraction of the chiral surfactant, was investigated by the selective adsorption of enantiomers and racemic solutions of alanine. The chiral selective adsorbability of this material type was shown by the asymmetric preferential adsorption of alanine as observed using circular dichroism (CD) spectroscopy and was further verified in a racemic mixture of valine. It was found that the adsorption of L-alanine was higher than that of D-alanine on as-prepared chiral mesoporous materials with a chiral selectivity factor of 3.15, which generates new possibilities for enantiomeric separation and other enantioselective applications.
研究领域:
材料科学
·
化学
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DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2023
·
IF 11.2
Hanyu Ren,Andi Guo,Chunhui Luo
Developing artificial substitutes that mimic the structures and performances of natural cartilage is of great importance. However, it is challenging to integrate the high strength , excellent biocompatibility, low coefficient of friction , long-term wear resistance, outstanding swelling resistance, and osseointegration potential into one material. Herein, a sandwich hydrogel with cartilage-mimetic structures and performances was prepared to achieve this goal. The precursor hydrogel was obtained by freezing-thawing the mixture of poly vinyl alcohol, chitosan and deionized water three cycles, accompanied by soaking in sodium hyaluronate solution. The top of the precursor hydrogel was hydrophobically modified with lauroyl chloride and then loaded with lecithin , while the bottom was mineralized with hydroxyapatite . Due to the multiple linkages (crystalline domains, hydrogen bonds , and ionic interactions), the compressive stress was 71 MPa. Owing to the synergy of the hydrophobic modification and lecithin , the coefficient of friction was 0.01. Additionally, no wear trace was observed after 50,000 wear cycles. Remarkably, hydroxyapatite enabled the hydrogel osseointegration potential. The swelling ratio of the hydrogel was 0.06 g/g after soaking in simulated synovial fluid for 7 days. Since raw materials were non-toxic, the cell viability was 100 %. All of the above merits make it an ideal material for cartilage replacement.
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高影响因子
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