Molecular Catalysis
·
2023
·
IF 4.6
Jinyi Liu,Haojie Yu,Li Wang,Sergey Z. Vatsadze,Dingning Chen,Xudong Wu,Xiaodan Gong,Yu Wang
Ferrocene (Fc)-based compounds as the burning rate catalysts (BRCs) for the thermal decomposition of ammonium perchlorate (AP), a vital oxidizer in composite solid propellants (CSPs), were received extensive attention due to its excellent catalytic effect. However, most of them are easy to migrate and the in situ produced metal oxide nanoparticles at high temperature tend to agglomerate, affecting the catalytic efficiency. Herein, a series of GOs functionalized with Fc were fabricated and studied as BRCs in this work. The results showed that these compounds can accelerate AP decomposition and enhance the combustion performance of CSPs, which was ascribed to the good thermal conductivity, electrical conductivity, larger steric hindrance and specific surface area. Among them, GO Cu-AMTZ-Fc showed the best catalytic performance. The pyrolysis temperature of AP was reduced from 420.9 °C to 337.6 °C. Meanwhile, the burning rate of propellant was increased from 1.64 mm/s to 2.20 mm/s and the related pressure index was decreased by nearly half. Moreover, their anti-migration ability was improved greatly. The work indicated that GOs functionalized with Fc have a potential application as BRCs in CSPs.
研究领域:
材料科学
·
化学工程
·
航空航天工程
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产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2014
·Vol. 161
·期 5
·H337
·
IF 2.859
Mi Ouyang,Pingjing Wang,Wubin Yu,Senbiao Huang,Jingwei Sun,Bin Hu,Xiaojing Lv,Zhiyan Fu,Cheng Zhang
A novel ferrocene-containing compound 6-(3,6-di(thiophen-2-yl)-9H-carbazol-9-yl)hexyl ferrocenecarboxylate (BTC-H-Fc) was synthesized by simple chemical route, and 3,6-di(thiophen-2-yl)-9H-carbazole (BTC) was prepared for comparison. Both of the homopolymers of BTC-H-Fc and BTC were successfully synthesized by electropolymerization and kept the redox activity upon repeated cycling between 0.0 V and 1.4 V. Compared to PBTC which could only showed two colors (yellow and purple), P(BTC-H-Fc) film could exhibit four colors (yellow, awny, purple and indigo-blue) as a consequence of mixing colors of main chain and Fc group. Meanwhile, P(BTC-H-Fc) film presented higher optical contrast of 52% and more excellent coloration efficiency (573.72 cm2 C−1). All the results demonstrate that Fc could be a good choice as a functional group to improve the electrochromic properties of the electrochromic polymers.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
CRYSTENGCOMM
·
2019
·Vol. 21
·期 11
·1772-1779
·
IF 3.382
Zheng Deng,Xinsheng Peng,Yu-Jia Zeng
Modulators were frequently employed to synthesize UiO-66 with improved crystallinity, enhanced porosity, and controlled size and morphology. However, little attention was paid to the functionality of modulators themselves. We showed that ferrocenecarboxylic acid (FcCOOH) was not only an efficient modulator for UiO-66 synthesis but also endowed UiO-66 with redox properties. FcCOOH significantly reduced the size of UiO-66 from 400 nm intergrown crystals into 50 nm individual ones, and at the same time remarkably improved their crystallinity, micro-pore volume (0.56 cm3 g−1), and BET surface area (1364 m2 g−1). In addition, FcCOOH in UiO-66 served as a reducing agent for in situ incorporation of Pd nanoparticles into UiO-66 under mild conditions and was used as an efficient heterogeneous catalyst for the Suzuki–Miyaura reaction.
研究领域:
材料科学
·
化学工程
·
催化化学
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产品关联
DOI
高影响因子
CHEMICAL PAPERS
·
2019
·Vol. 74
·期 3
·895-901
·
IF 1.246
Gao Ruo-Xuan,Gao Yuan-Yuan,Xie Rui-Jun,Han Li-Min
Ferrocenylcarboxylic acid Fe, Co, and Ni complexes were synthesized as model complexes to investigate how many ferrocene units of multi-ferrocenyl system can react with the electrode. The molecular structures of model complexes were characterized by X-ray single-crystal diffraction, the diffusion coefficient of the complexes and ferrocene was determined by the diffusion-ordered spectroscopy and Einstein–Stokes equation, the electrode reaction numbers of ferrocene units were determined by cyclic voltammetry and the Randles–Sevcik equation. A model of electrode reaction of multi-ferrocenyl system was proposed in this paper, which was used to explore how many ferrocene units of multi-ferrocenyl complexes can react with the electrode.
研究领域:
电化学
·
材料科学
·
分析化学
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产品关联
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 37
·20701-20711
·
IF 2.936
Wei Juan Xu,Jian Jun Wang,Shi Yu Zhang,Jun Sun,Chuan Xiang Qin,Li Xing Dai
In this work, a novel strategy is developed to solve the issue of mutually exclusive high mechanical robustness and thermo-stability for thermoplastic polyurethane (PU). A leaf-like and reticulate interfingering superstructure can be seen. The superstructure of polyurethanes can also be tuned by the polarity of chain extender molecular via changing the number for ferrocene redox centres, thus to further enhance the thermal stability and elasticity of PUs. As a result, by incorporating bisferrocene units into the main chain of PU, a high-performance PU elastomer can be synthesized with a highest initial degradation temperature of T5% of 345 °C, a highest tensile strength of 42.3 MPa with an elongation over 1000%, as well as a toughness of 19.6 GJ m−3. These results conclusively suggest that high-performance thermoplastic polyurethane elastomers had great promise for potential application in a wide range of practical fields.
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
·
2024
·
IF 5.3
Dingning Chen,Haojie Yu,Li Wang,Jinyi Liu,Yu Wang,Xudong Wu
Ferrocene-based catalyst is one of the most widely used burning rate catalysts for ammonium perchlorate (AP) based propellants. However, its application is limited due to the defect of easy migration. Herein, the hyperbranched polymers with a large number of amide groups and high Fe content were employed to construct rAP/HFc composites by a solvent-antisolvent method to improve their anti-migration and catalytic performance. The 1 H NMR, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, thermogravimetric analysis, scanning electron microscope, powder X-ray diffraction and inductively coupled plasma mass spectrometry were used to characterize the prepared samples. The surface coating technology enabled ferrocene-based catalysts to be distributed evenly on the surface and between the gaps of rAP, and no migration of the catalysts was observed after 28 days of the aging test. The thermal decomposition temperature of rAP coating with 5wt % 0.5HFc was decreased from 404 to 335 °C. Moreover, the hydrophobicity test showed that the water contact angles of prepared composites increased to 50°, indicating good anti-caking performance.
研究领域:
材料科学
·
推进剂技术
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产品关联
DOI
高影响因子
Pharmaceutics
·
2024
·Vol. 16
·期 7
·936
·
IF 4.9
Peng Chen,Zhihui Wang,Xinmo Wang,Junni Gong,Ju Sheng,Yufei Pan,Dandan Zhu,Xiaoxuan Liu
Small interfering RNA (siRNA) therapeutics, characterized by high specificity, potency, and durability, hold great promise in the treatment of cancer and other diseases. However, the clinic implementation of siRNA therapeutics critically depends on the safe and on–demand delivery of siRNA to the target cells. Here, we reported a family of ferrocenyl amphiphilic dendrimers (Fc-AmDs) for on–demand delivery of siRNA in response to the high ROS content in cancer cells. These dendrimers bear ROS–sensitive ferrocene moieties in the hydrophobic components and positively chargeable poly(amidoamine) dendrons as the hydrophilic entities, possessing favorable safety profiles and ROS responsive properties. One of these ferrocenyl amphiphilic dendrimers,Fc-C8-AmD 8A, outperforms in siRNA delivery, benefiting from its optimal balance of hydrophobicity and hydrophilicity. Its ROS feature facilitates specific and efficient disassembly of its complex with siRNA in ROS–rich cancer cells for effective siRNA delivery and gene silencing. Moreover,Fc-C8-AmD 8Aalso integrates the features and beneficial properties of both lipid and dendrimer vectors. Therefore, it represents a novel on–demand delivery system for cancer cell–specific siRNA delivery. This work opens new perspectives for designing self–assembly nanosystems for on–demand drug delivery.
研究领域:
药学
·
纳米技术
·
癌症研究
·
药物递送系统
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DOI
PubMed
高影响因子
DYES AND PIGMENTS
·
2018
·
IF 3.767
Xiaojing Lv,Conghui Huang,Alexey Tameev,Liang Qian,Rui Zhu,Konstantin Katin,Mikhail Maslov,Alexander Nekrasov,Cheng Zhang
A novel triphenylamine (TPA) derivative (E) N-(4-(Diphenylamino)phenyl)- formimidoylferrocene) (TPAFc) containing ferrocene (Fc) unit was designed and synthesized successfully. Theoretical calculation and experimental data show TPAFc possesses higher HOMO energy level and the lower onset oxidative potential compared to TPA monomer . Cyclic voltammetry test demonstrates coupling reaction between TPA units and the formation of an electroactive polymer film during successive scans. This intriguing phenomenon may be ascribed to the multi-step oxidation process and Fc unit plays an important role as charge transport center for electrons moving from TPA units and the surface of the forming oligomer film to the electrode. SEM images indicate PTPAFc film shows the surface morphology of uniform tubular structures, which may largely increase the area of interface between the electrolyte solution and the polymer film. Interestingly, PTPAFc film exhibits reversible multicolor changes switched from neutral transparent color to light orange and blue in fully oxidized state, which are attributed to that the existence of Fc unit brings out multiple redox states. In addition, the polymer film presents excellent electrochromic performances in the aspect of high optical contrast (∼58%), good coloration efficiency (∼130 cm 2 C −1 ) and fast switching time (∼2 s). In view of these excellent features, the developed PTPA derivative is very satisfactory for applications on high-performance electrochromic devices .
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
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2022
·Vol. 649
·期 2
·e202200169
·
IF 1.414
Jinyi Liu,Haojie Yu,Li Wang,Sergey Z. Vatsadze,Zhikun Huang,Xuefei Li,Lei Ding
Ammonium perchlorate (AP) is a common oxidizer and accounts for over 60 wt% in composite solid propellants (CSPs). Ferrocene (Fc)-based compounds have become one of the most widely used burning rate catalysts (BRCs) for AP decomposition due to their outstanding catalytic effect. To improve the anti-migration ability of Fc-based compounds during long-time storage, seven Fc-based Schiff base derivatives were synthesized. Their molecular structures were characterized by UV-Vis, FT-IR, 1 H NMR, 19 F NMR, ESI-MS and EA. Meanwhile, their electrochemical behaviors and catalytic effects for AP decomposition were studied by CV and TG techniques. The results showed that these synthesized compounds had good catalytic effect, obviously reducing the thermal decomposition temperature of AP. Moreover, their anti-migration properties were also investigated by the aging test of simulated propellant. The results showed that they had better anti-migration ability than commercial BRCs (catocene, Cat ). This study demonstrates that Fc-based Schiff base compounds are possible BRCs for AP-based propellant.
研究领域:
化学
·
材料科学
·
推进剂研究
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产品关联
DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 9
·5072-5079
·
IF 4.036
Tao Zhan,Xiao-Zhen Feng,Qi-Qi An,Shiyong Li,Mingyue Xue,Zhencheng Chen,Guo-Cheng Han,Heinz-Bernhard Kraatz
Gold electrodes (GE) were modified by the deposition of copper nanoparticles (CuNPs) and cobalt nanoparticles (CoNPs), followed by drop-casting of the ferrocene derivative FcCO-Glu-Cys-Gly-OH (Fc-ECG), resulting in two enzyme-free electrochemical sensors Fc-ECG/CuNPs/GE and Fc-ECG/CuNPs/GE. The ferrocene-peptide conjugate acts as an effective redox mediator for glucose oxidation, while metal nanoparticles acted as non-biological sites for glucose oxidation. Field emission scanning electron microscopy (FESEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were carried out for characterization, while differential pulse voltammetry (DPV) was used for glucose quantification. Under optimized conditions, DPV shows a linear relationship between glucose concentration and the peak current. Both sensors showed a surprisingly high sensitivity of 217.27 and 378.70 μA mM−1 cm−2, respectively. A comparison to other glucose sensors shows a sensitivity that is 25 times higher. The sensors exhibit good reproducibility, stability, and repeatability. In injection experiments, recovery rates were 87.39–107.65% and 100.00–106.88%, respectively.
研究领域:
电化学
·
分析化学
·
生物传感器
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产品关联
DOI
PubMed
高影响因子
FUEL
·
2024
·
IF 6.7
Xiaoju Liu,Xiaoyan Ma,Guoxiong Wang,Zhou Chen
Enhancing the resistance to migration, efficiency, and energy of ferrocene-based catalysts is crucial for improving the thermal decomposition process of ammonium perchlorate (AP). This study focuses on the synthesis of three bimetallic composites catalysts based on ferrocenyl guanidine, namely CoM/FcDz (M = Cu 2+ , Zn 2+ , and Mn 2+ ), to facilitate the deep decomposition of AP. These catalysts were chosen for their advantageous synergistic effects, abundant active sites, excellent conductivity, and high energy capacity. In addition, the cooperative action between cobalt (Co) and the second metal significantly enhances catalytic activity, facilitating the breakdown of N–H, O–H, and O-Cl bonds in AP intermediates, these bonds play a critical role in the overall decomposition process. The catalytic efficacy was evaluated using DSC, finding optimal results with 5 wt% CoMn/FcDz added to AP, and AP significantly reduced high-temperature decomposition by 143 °C and decreased apparent activation energy by 82.87 kJ/mol, while enhancing heat release by 1870 J/g. Additionally, the study delved into the catalytic mechanism of AP decomposition using TG-FTIR. This research offer promising catalyst candidates and novel insights into the catalytic decomposition of AP.
研究领域:
材料科学
·
化学工程
·
推进剂技术
✓ 已验证
DOI
高影响因子
ACS Catalysis
·
2025
·
IF 13.1
Yi Zhang,Habib Ullah,Linfeng Li,Hsiao-Chien Chen,Xia Zhang,Qiangli Lv,Xuefei Xu,Shaowei Zhang,Chao Hu,Zhishan Li,Muhammad Humayun,Mohamed Bououdina,Hussein A. Younus,Deli Wang,Chundong Wang
The design and development of highly efficient, stable, and low-cost electrocatalysts for the oxygen evolution reaction (OER) is crucial for green hydrogen production. Metal–organic frameworks (MOFs), with the merits of structural diversity and tunable organic ligand nature, have significant potential. Herein, a Co-based MOF (CoMnFcMOF) electrocatalyst was fabricated under hydrothermal conditions using Mn as a dopant and a ferrocene-based dicarboxylate linker. The as-prepared CoMnFcMOF enables a current density of 100 mA·cm–2 with an overpotential of 238 mV under an alkaline condition. The well-addressed OER activity is attributed to the spin state modulation of Co induced by Mn incorporation, as verified experimentally and from density functional theory calculations. The total effective magnetic moment (μeff) considerably decreases from 3.992 μB/f.u. in CoFcMOF to 1.974 μB/f.u. in CoMnFcMOF, indicating a spin transition from a high spin (HS) to an intermediate spin (IS) state. This spin modulation facilitates the adsorption of the O* intermediates, thereby accelerating the reaction kinetics. This work establishes a design paradigm for high-performance transition metal-based catalysts through spin state engineering.
研究领域:
材料化学
·
电催化
·
无机化学
·
能源化学
·
物理化学
·
纳米材料
·
可持续能源技术
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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）