TEXTILE RESEARCH JOURNAL
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2014
·
IF 1.332
Yun Zhang,Guangqing Zhuang,Yanrong Jia,Qinguo Fan,Jianzhong Shao
(SiO2/PEI)n films with structural colors on polyester fabrics were fabricated using negatively charged SiO2 nanoparticles and positively charged polyethyleneimine (PEI) using the electrostatic self-assembly approach. The bright and variable structural colors of polyester fabrics coated with a (SiO2/PEI)n film were investigated through the color photos captured by a digital camera, and also through the reflectance spectra and the images measured by a DigiEye system and a multi-angle spectrophotometer. The morphological structure of (SiO2/PEI)n films was characterized by scanning electron microscopy (SEM), and the electrostatic self-assembly process and the driving forces of fabricating the (SiO2/PEI)n films were investigated and schematically illustrated. The results showed that the structural colors varied with the various assembly cycles and viewing angles; both the optical properties indicated by the structural colors and the morphological structures illustrated by the SEM images confirmed that the (SiO2/PEI)n film on a polyester fabric was a homogeneous porous composite monolayer, with structural colors originated from single thin film interference; the self-assembly process of (SiO2/PEI)n film on a polyester fabric was driven by multi-forces, with dominant forces equilibrium of electrostatic attraction and repulsion.
研究领域:
材料科学
·
纺织工程
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DOI
高影响因子
International Journal of Nanomedicine
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2020
·
IF 5.115
Lingling Ou,Haiyingjie Lin,Yuwei Song,Guoqiang Tan,Xiujuan Gui,Jinyuan Li,Xiaoting Chen,Zhendong Deng,Shaoqiang Lin
Background Gene therapy is considered a novel way to treat osteosarcoma, and microRNAs are potential therapeutic targets for osteosarcoma. miR-214 has been found to promote osteosarcoma aggression and metastasis. Graphene oxide (GO) is widely used for gene delivery for the distinct physiochemical properties and minimal cytotoxicity. Methods Polyethyleneimine (PEI)-functionalized GO complex was well-prepared and loaded with miR-214 inhibitor at different concentrations. The load efficacy was tested by gel retardation assay and the cy3-labeled fluorescence of cellular uptake. The experiments of wound healing, immunofluorescence staining, Western blot, qRT-PCR and immunohistochemical staining were performed to measure the inhibitory effect of the miR-214 inhibitor systematically released from the complexes against MG63, U2OS cells and xenograft tumors. Results The systematic mechanistic elucidation of the efficient delivery of the miR-214 inhibitor by GO-PEI indicated that the inhibition of cellular miR-214 caused a decrease in osteosarcoma cell invasion and migration and an increase in apoptosis by targeting phosphatase and tensin homolog (PTEN). The synergistic combination of the GO-PEI-miR-214 inhibitor and CDDP chemotherapy showed significant cell death. In a xenograft mouse model, the GO-PEI-miR-214 inhibitor significantly inhibited tumor volume growth. Conclusion This study indicates the potential of functionalized GO-PEI as a vehicle for miRNA inhibitor delivery to treat osteosarcoma with low toxicity and miR-214 can be a good target for osteosarcoma therapy.
研究领域:
肿瘤学
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分子生物学
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纳米技术
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药学
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DOI
PubMed
高影响因子
DESALINATION
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2026
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IF 9.9
Hui Wang,Heyao Lu,Kaiqi Chen,Guanbing Zhou,Yihui Yuan,Ning Wang
Efficient adsorption and recoverable removal of uranium from aqueous media are crucial for resource utilization and environmental risk mitigation. However, conventional adsorbents often suffer from poor structural stability, limited reusability, and difficulties in deployment and recovery, which hinder practical applications. Herein, a robust macroporous ternary composite gel bead (PEI/SA-XLS) was fabricated from sodium alginate (SA), polyethyleneimine (PEI), and synthetic hectorite-type clay (laponite XLS) via synergistic polyelectrolyte complexation, supramolecular crosslinking, and freeze-drying. SA and PEI formed a 3D network through electrostatic interactions, while XLS nanosheets reinforced the framework through hydrogen bonding between surface silanol groups and amino/hydroxyl groups. Freeze-drying generated macropores (~100 μm), thereby significantly enhancing mass transfer and facilitating uranyl diffusion into the bead interior. Mechanistically, negatively charged XLS surfaces promoted electrostatic enrichment of UO 2 2+ , while silanol, amino, and carboxyl groups provided cooperative binding sites for efficient uranyl capture. The maximum adsorption capacity ( q m ) was ~2707 mg·g −1 (Langmuir). A removal efficiency of ~98% was achieved at 15.1 mg·L −1 ( V = 100 mL), and ~ 93% efficiency was maintained after ten adsorption-desorption cycles. These results highlight that macroporous transport channels and mechanically robust pore walls play a dominant role in adsorption efficiency and cycling stability for macroscopic adsorbents.
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产品关联
DOI
高影响因子
TALANTA
·
2026
·
IF 6.7
Xinyi Wang,Minghao Wang,Wenbin Zhang,Dewang Yan,Liubing Kong,Gaofeng Wang
Accurate cortisol monitoring is essential for stress assessment and health management, yet reliable quantification remains challenging because signal fluctuations and matrix effects can compromise the performance of conventional single-mode immunosensors. Herein, we developed a fluorescence-colorimetric (FL-CL) dual-modal immunosensor based on a CuMOF-PEI@AuNPs@HRP (CPA) immunoreceptor for cortisol determination. The integrated sensing architecture generates correlated fluorescence and colorimetric responses from the same recognition event, which are combined through a normalized dual-signal output to improve calibration reliability. Under optimized conditions, the proposed sensor exhibited a detection limit of 0.22 ng/mL and a linear range of 3.1-200 ng/mL, covering physiologically relevant cortisol concentrations in saliva. Compared with single-modal assays and commercial kits, the proposed platform demonstrates enhanced sensitivity, improved correlation, good stability, and batch reproducibility. By integrating signal amplification, dual-modal readout, and simplified immunoreceptor fabrication within a single sensing platform, this work provides a reliable strategy for cortisol monitoring and offers potential for extension to other biomarker detection systems.
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Wensheng Qi,Tingting Deng,Run Yuan,Ting Li,Dapeng Liu,Yaoliang Hong
To tackle the challenge of achieving high rejection for both divalent cations and anions simultaneously in polyamide membranes for desalination, a novel composite nanofiltration membrane (PES-PEI/SBE-β-CD-PA) was developed in this study. The membrane was fabricated by incorporating a layer-by-layer (LBL) self-assembled interlayer of polyethyleneimine (PEI) and sulfobutyl ether-β-cyclodextrin (SBE-β-CD), followed by interfacial polymerization (IP) to form the PA selective layer. The SBE-β-CD, leveraging its sulfonate groups and cavity structure, facilitated the enrichment and modulated diffusion of piperazine (PIP), enabling a significantly thinned (126 nm, down from the original 297 nm), defect-free PA layer with strong negative charge (−28.93 mV). The optimized membrane, relying on the synergistic mechanism of Donnan exclusion (electrostatic interaction) and steric hindrance, achieved a high pure water permeance of 15.42 L·m −2 ·h −1 ·bar −1 and excellent salt rejection performance of 98.41 %, 97.98 %, 91.81 %, 90.10 % and 54.28 % for Na 2 SO 4 , MgSO 4 , MgCl 2 , CaCl 2 and NaCl respectively, which is competitive compared to the state-of-the-art membranes. Moreover, the composite membrane maintained stable desalination performance over 72 h of continuous operation. This work demonstrates a promising strategy for fabricating high-performance desalination membranes through the construction of a hydrophilic LBL interlayer, offering potential applications in seawater and brackish water desalination.
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产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Yinchuan Pu,Duoduo Huang,Su Wang,Wei Xu
Developing robust and durable superhydrophilic surfaces on polyethylene terephthalate (PET) films is critical for advancing their applications in self-cleaning and biomedical technologies. In this study, a coating solution containing polyethyleneimine and HDI polyisocyanate was bar-coated onto PET film surfaces and subsequently cross-linked to form a dense R-NH-CO-NH-R' covalent network. After modification, the PET film surfaces demonstrated superhydrophilicity (WCA=0°) accompanied by a significant increase in surface energy to 79.4 mN/m, while achieving excellent 5B-grade adhesion. Furthermore, when exposed to 40-hour immersion in aqueous solutions, the modified surfaces maintained their superhydrophilicity (0° WCA) with essentially unchanged surface energies. The coatings showed near-complete surface coverage along with substantial covalent bonds retention. Such crosslinking construction approach via bar-coating exhibits promising potential for PET films in superhydrophilic applications.
研究领域:
生物医学工程
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材料科学
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表面工程
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2025
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IF 2.8
Wenchao Zhang,Meilin Gao,Dongyu Hou,Bowen Hou,Shiyu Liu,Qingguo Chen,Jinghua Yin,Dong Yue,Yu Feng
Polymer is the dielectric material of choice for dielectric capacitors. However, the low dielectric constant limits the polymer from achieving a satisfactory energy density. Therefore, researchers synergistically integrate a variety of components to effectively improve the energy storage performance. In this paper, Polyetherimide (PEI) and Fluorene Polyester (FPE) hybrid composite films are prepared by a linear/linear blending strategy. The dielectric constants of PEI and FPE are 3.38 and 3.45 at 10 Hz, and the dielectric constant is increased to 4.02 when the mass fraction of FPE is 10%. The breakdown field strength of PEI and FPE is 553.51 and 589.34 kV/mm, and the breakdown field strength reaches 746.51 kV/mm after blending. At 800 kV/mm, the energy storage density and energy storage efficiency of the hybrid composite film reach 11.38 J/cm 3 and 86.14%. Compared with PEI, the performance of the prepared blended composite film has been comprehensively improved, which provides a corresponding theoretical analysis and experimental strategy for the preparation of high-performance all-organic blended composite dielectric and also has potential application prospects in energy storage devices.
研究领域:
材料科学
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能源存储
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产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2021
·Vol. 8
·期 12
·3149-3155
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IF 6.569
Xiuwei Sun,Shumei Liu,Qingyin Wu,Shan Zhang,Hongrui Tian,Xue Bai,Zhuo Li,Ying Lu,Shuxia Liu
Polyethyleneimine (PEI) is expected to become a new type of proton conduction booster due to its high density amine and extremely high flexibility. Herein, a nanofiber membrane (eHPW-PEI) composed of PEI and phosphotungstic acid (H3PW12O40, HPW) was prepared by electrostatic spinning using polyvinylpyrrolidone (PVP) as an adhesive. In eHPW-PEI, the continuous H-bond network formed by HPW-PEI acid–base pairs, the segmental movement of highly flexible PEI and the well-tuned pathway of 1D nanofibers jointly prompt the fast transfer of protons under high temperature and low humidity conditions. The proton conductivity of eHPW-PEI with 25 wt% HPW (eHPW-PEI1) reached 1.6 × 10−3 S cm−1 at 85 °C and 60% relative humidity (RH) and 3.7 × 10−3 S cm−1 at 135 °C. This is the first time that the segmental movement of a highly flexible polymer is utilized to accelerate proton transfer, which may be considered as a ‘proton-escalator’.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 65
·60530-60536
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IF 3.289
Daoyi Jiang,Zhixiong Liu,Jin Han,Xuedong Wu
We reported a series of tough nanocomposite hydrogels with good antifouling properties based on quaternized hybranched polyethylenimine (HPEI) nanoparticles. The quaternized HPEI nanoparticles acted as both cross-linkers to produce tough hydrogels and antibacterial agents to prevent fouling attachments. Compared with the polymer hydrogel, these nanocomposite hydrogels exhibited significantly improved mechanical properties. The mechanical strength of the nanocomposite hydrogels had a strong dependence with proportion of the quaternized HPEI nanoparticles. Furthermore, the anti-algae/bacterial assay indicated the nanocomposite hydrogels showed better antimicrobial and anti-algae performances due to the broad spectrum antimicrobial activity of Quaternary Ammonium Salts (QAS) functional groups.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
International Journal of Environmental Research and Public Health
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2020
·Vol. 17
·期 4
·1452
·
IF 2.849
Yankun Sun,Wanzhen Liu,Xinzhong Wang,Haiyan Yang,Jun Liu
A series of efficient adsorbents were prepared by a wet-impregnation method for CO2separation from simulated biogas. A type of commercially available silica, named as FNG-II silica (FS), was selected as supports. FS was modified with a mixture of polyethyleneimine (PEI) and ethanolamine (MEA) to improve the initial CO2adsorption capacity and thermal stability of the adsorbents. The influence of different adsorbents on CO2adsorption performance was investigated by breakthrough experiments. Scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR), and N2adsorption–desorption isotherm were used to characterize the silica before and after impregnating amine. Additionally, the thermal stability of adsorbents was measured by differential thermal analysis (TDA). Silica impregnated with mixtures of MEA and PEI showed increased CO2adsorption performance and high thermal stability compared with those obtained from silica impregnated solely with MEA or PEI. With a simulated biogas flow rate of 100 mL/min at 0.2 MPa and 25 °C, FS-10%MEA-10%PEI exhibited a CO2adsorption capacity of ca. 64.68 mg/g which increased by 81 % in comparison to FS-20%PEI. The thermal stability of FS-10%MEA-10%PEI was evidently higher than that of FS-20%MEA, and a further improvement of thermal stability was achieved with the increasing value of PEI/MEA weight ratio. It was showed that MEA was able to impose a synergistic effect on the dispersion of PEI in the support, reduce the CO2diffusion resistance and thus increase CO2adsorption performance. Additionally, if the total percentage of amine was the same, FS impregnated by different ratios of PEI to MEA did not exhibit an obvious difference in CO2adsorption performance. FS-15%PEI-5%MEA could be regenerated under mild conditions without obvious loss of CO2adsorption activity.Keywords:silica;solid amine;biogas
研究领域:
化学工程
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环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
ChemNanoMat
·
2020
·Vol. 6
·期 5
·765-772
·
IF 3.384
Di Zhang,Qi Wang,Xiaocui Cheng,Huanhuan Li,Qiuyue Wang,Fangfang Yu,Wenying Wang,Jing Xin,Qingmei Li,Changfeng Dou,Xiaoqing Wu,Hongli Qian,Wei Fang,Fengrui Wu,Yong Liu,Shuanglin Jiang,Wenyong Li,Rong Wang
Graphical Plasmid DNA coheres to the surface of AuNPs through electrostatic adsorption of the PEI mixture with a certain proportion of high-molecular-weight (25,000) PEI (HMW PEI) and low-molecular-weight (1,800) PEI (LMW PEI). AuNPs−PEI−DNA shows a very low toxic impact to embryo development and excellent efficiency of delivering exogenous DNA into mouse early embryonic cells. A transgenic system of noninvasive cytosolic transport based on exogenous plasmid DNA (pIRES2−EGFP) loading on gold nanoparticles (AuNPs) coated with polyethyleneimine (PEI) was successfully constructed, which can remove the technical threshold and possible damage of microinjection to oocytes and embryo development. In this study, mouse zygotes were cultured in KSOM medium containing the complex of AuNPs−PEI−DNA (APD) until formation of blastocyts, and then transferred into pseudopregnant female mice for obtaining transgenic offspring. Fluorescence observations confirm the expression of GFP in early embryos; importantly, data from identifying experiments by genotyping, immunofluorescence and DNA sequencing show that the GFP sequence indeed integrates into the chromosome of offspring individuals and is expressed. Furthermore, TUNEL test and analysis on cell differentiation of blastocysts indicate an excellent safety of APD to the development of embryos. All these results suggested that AuNPs, being an alternative technique to traditional microinjection, can efficiently introduce biomolecules into early embryonic cells without the prerequisite of expensive micromanipulators and skilled technicians, which will greatly promote study of life sciences in various aspects.
研究领域:
分子生物学
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遗传学
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生殖医学
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产品关联
DOI
高影响因子
IONICS
·
2021
·Vol. 27
·期 11
·4749-4759
·
IF 2.817
Liu Jiuqing,Hong Zikun,Zhu Fangfang,Li Qihou,Li Jie,Liu Meng,Wang Cheng,Song Feifei,Bai Lishun,Zeng Fanli
In this paper, a gel polymer electrolyte based on sulfonated polyetherimide (SPEI)/polyetherimide (PEI) blending separator has been fabricated through non-solvent-induced phase separation (NIPS) method. The performance of the SPEI/PEI blending separator is investigated through the morphology and electrochemical analysis. The addition of SPEI polymer has great effect on the morphology of separator’s top and bottom surface. When the SPEI mass ratio increases, the SPEI/PEI blending separator shows high porosity (up to 72.80%), ion conductivity (up to 2.63 mS cm −1 ), and low tensile strength (down to 7.98 MPa). The discharge specific capacity, capacity retention rate, and average capacity attenuation rate of lithium-sulfur battery using SPEI-2 (separator with the weight ratio of SPEI/PEI = 2:8) are 736.1 mAh g −1 , 57.2%, and 0.21% after 200 cycles, respectively. The result shows that the SPEI/PEI blending separator has lower capacity decays compared with SPEI-0 (separator with the weight ratio of SPEI/PEI = 0:10) and the commercial Celgard 2320 separator, which indicates that the existence of sulfonic acid group is conducive to the stability of the lithium-sulfur battery cycle. Therefore, it is concluded that the SPEI/PEI blending separator prepared by NIPS method is a potential separator for high-performance rechargeable lithium-sulfur battery.
研究领域:
材料科学
·
电化学
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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）