IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION
·
2022
·Vol. 30
·期 1
·230-237
·
IF 2.509
Bin Du,Yuxiang Mai,Nanqing Chen,Yushun Zhao
The interfacial effect of nanoparticles can effectively regulate electron migration in epoxy composites. In this article, hydroxylated C60 [C60(OH)] was prepared and added to epoxy resin (EP). The inhibition of electron motion in epoxy composites was realized, and the dielectric strength of the epoxy composites was improved. The results of dynamic mechanical analysis (DMA) showed that C60(OH) regulated the structure of the crosslinked EP network and increased the crosslink density by 16.5%. The results of a density functional theory (DFT) simulation showed that the doping of C60(OH) formed a potential energy barrier at the C60(OH)-EP interface, which was conducive to the directional migration and capture of electrons driven to C60(OH). Electrostatic force microscopy (EFM) and pulsed electroacoustic (PEA) experiments showed that C60(OH) had a strong ability to capture charge, and the charge migration rate of C60(OH)/EP was 43% lower than that of pure EP in the presence of 10 kV/mm when the EP was doped with 0.1wt% C60(OH). The breakdown strength and volume resistivity increased by 17.87% and 222%, respectively. Thus, this article provides a new method to improve the dielectric strength of epoxy composites.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
ORGANIC ELECTRONICS
·
2018
·
IF 3.68
Kang Chen,Tiantian Cao,Ziqi Sun,Dan Wang,Ning Chen,Yongfang Li
TiO 2 is widely used in conventional n-i-p type perovskite solar cells (Pero-SCs) as electron transporting layer (ETL). However, its drawbacks such as photocatalytic properties, low electron mobility , and a process of high temperature sintering , hindered the further improvement of device performance. In this work, a vacuum-deposited fullerene C 60 was utilized as ETL, and a easily accessible fullerene derivative, C 60 (OH) 16 fullerenol, was employed between ITO electrode and C 60 ETL to modify ITO for the first time. After introducing the C 60 (OH) 16 fullerenol layer, the Pero-SC obtained the favorable energy level alignment between ITO cathode and perovskite layer, and the device based on C 60 (OH) 16 /C 60 ETL achieved a champion PCE of 16.70%, which showed a 15.41% enhancement compared to the Pero-SC with pristine C 60 ETL (14.47%). The mechanisms of performance improvement were systemically discussed with respect to the optimized energy level, efficient charge transport and reduced interfacial resistance. This work exhibited that fullerenol C 60 (OH) 16 is a promising interfacial modification material for the n-i-p type Pero-SCs.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2024
·
IF 6.5
Fan Gao,Ying Nie,Yue Zhang,Tao Wang
Carbon nanomaterial is a momentous field of current biomedical research. However, extensive exploration is still required to endow carbon nanomaterial with both antibacterial properties and biological safety. In this study, fullerenol and calcium ions were synthesized into C 60 (OH) n -Ca nanoparticles through an electrostatic self-assembly strategy. Morphological and chemical analyses revealed that the C 60 (OH) n -Ca nanoparticles contained 4.52 at.% Ca, with a minimum size of approximately 10 nm. The electrostatic self-assembly did not alter the chemical structure of the fullerenol. The photodynamic antibacterial effect of the C 60 (OH) n -Ca nanoparticles was concentration-dependent, showing antibacterial rates of 94 % and 96.6 % against Escherichia coli and Staphylococcus aureus at a concentration of 100 μg/mL, while the antibacterial effect was unsatisfactory under dark conditions. Additionally, C 60 (OH) n -Ca nanoparticles promoted the proliferation of MC3T3-E1 cells, demonstrating desirable biological safety. The C 60 (OH) n -Ca nanoparticles synthesized in this article achieved a balance between antibacterial and cytocompatibility, thus possess potential applications in biomedical fields.
研究领域:
生物医学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
FREE RADICAL BIOLOGY AND MEDICINE
·
2024
·
IF 7.1
Haoyu Wang,Junqi Zhao,Shiliang Ji,Tingjun Liu,Zhisheng Chen,Zhen Huang,Yuhui Zang,Jiangning Chen,Junfeng Zhang,Zhi Ding
Alcoholic liver disease (ALD) is a common chronic redox disease caused by increased alcohol consumption. Abstinence is a major challenge for people with alcohol dependence, and approved drugs have limited efficacy. Therefore, this study aimed to explore a new treatment strategy for ALD using ferroferric oxide endohedral fullerenol (Fe 3 O 4 @C 60 (OH) n ) in combination with static magnetic and electric fields (sBE). The primary hepatocytes of 8–9-week-old female BALB/c mice were used to evaluate the efficacy of the proposed combination treatment. A mouse chronic binge ethanol feeding model was established to determine the alleviatory effect of Fe 3 O 4 @C 60 (OH) n on liver injury under sBE exposure. Furthermore, the ability of Fe 3 O 4 @C 60 (OH) n to eliminate •OH was evaluated. Alcohol-induced hepatocyte and mitochondrial damage were reversed in vitro . Additionally, the combination therapy reduced liver damage, alleviated oxidative stress by improving antioxidant levels, and effectively inhibited liver lipid accumulation in animal experiments. Here, we used a combination of magnetic derivatives of fullerenol and sBE to further improve the ROS clearance rate, thereby alleviating ALD. The developed combination treatment may effectively improve alcohol-induced liver damage and maintain redox balance without apparent toxicity, thereby enhancing therapy aimed at ALD and other redox diseases.
研究领域:
药理学
·
毒理学
·
分子生物学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）