Research
·
2019
·
IF 0
Yunru Yu,Jiahui Guo,Lingyu Sun,Xiaoxuan Zhang,Yuanjin Zhao
Inspired by helical or spiral veins, which endow plants with excellent flexibility and elasticity to withstand storms, we present novel hollow microsprings with ionic liquid encapsulation for flexible and stretchable electronics. The microsprings were generated by using a coaxial capillary microfluidic device to consecutively spin poly(vinylidene fluoride) (PVDF) presolution and an ionic liquid, which formed laminar flows in the coaxial injection microfluidic channels. The fast phase inversion of PVDF helps to form the core-shell structure of a microfiber and guarantees the in situ encapsulation of ionic liquid. The hybrid microfiber can then spiral and be further solidified to maintain the helical structure with increasing flow rates of the injection fluids. Because of the feasible and precise control of the injection fluids during the microfluidic spinning, the resultant microsprings have controlled core-shell structures, helical pitches, and corresponding electromechanical properties. By further embedding them into stretchable films, the simple paradigm of a flexible device shows great conductive performance in tensile tests and even motion cycles, which could be explored as a promising candidate in stretchable sensors, flexible electronics, and electronic skins.
研究领域:
材料科学
·
生物仿生学
·
电子工程
✓ 已验证
DOI
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2015
·
IF 2.587
Hua Cheng,Ping Wang,Jiangshui Luo,Jan Fransaer,Dirk E. De Vos,Zheng-Hong Luo
To search for robust CO2 capture materials, two types of ionic liquids, namely, (p-vinylbenzyl)trimethylammonium tetrafluoroborate ([VBTMA][BF4]) and (p-vinylbenzyl)trimethylammonium hexafluorophosphate ([VBTMA][PF6]), were synthesized and immobilized onto a mesoporous silica (meso-silica) support by the surface-initiated atom-transfer radical polymerization (SI-ATRP) method. The prepared sorbents meso-SiO2–P[VBTMA][BF4] and meso-SiO2–P[VBTMA][PF6] were well-characterized. Their adsorption behaviors toward CO2 from simulated flue gases at different pressures were investigated using an adsorption column. Based on a simulated flue gas containing 10 vol % CO2 at 30 °C, the highest CO2 adsorption capacity of meso-SiO2–P[VBTMA][BF4] was 0.4025 mmol g–1, whereas the corresponding value for meso-SiO2–P[VBTMA][PF6] was 0.3793 mmol g–1. Compared with pure poly(ionic liquid)s, the existence of a meso-silica core improves the CO2 capture capacity. Furthermore, the presence of vapor can improve the CO2 capture capacity. However, an increase in temperature inhibits the CO2 capture capacity, implying that the nanocomposites should preferably be used at low temperature.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
COLLOID AND POLYMER SCIENCE
·
2012
·Vol. 290
·期 17
·1785-1791
·
IF 2.331
Gao Hejun,Zhang Shaohua,Lu Fei,Jia Han,Zheng Liqiang
Graphene sheets can be effectively dispersed by a novel ionic liquid-based polyether, poly(1-glycidyl-3-methylimidazolium chloride) (PGMIC), in aqueous solution. The reduction of graphene oxide to graphene is confirmed by UV–Vis and Raman spectrum in aqueous solution of PGMIC. TEM image showed that the stable and uniform dispersion of graphene sheets were obtained. Both the TGA and AFM analysis indicated that the graphene sheet was covered by PGMIC. FTIR spectra demonstrated that n–π, cation–π interactions and electrostatic repulsions played important roles in the dispersion of graphene sheets.
✓ 已验证
DOI
高影响因子
SEPARATION SCIENCE AND TECHNOLOGY
·
2012
·
IF 1.088
Jie-Ping Fan,Jing Cao,Xue-Hong Zhang,Jun-Zhong Huang,Tao Kong,Sheng Tong,Zhe-You Tian,Jian-Hang Zhu,Xiao-Kun Ouyang
Various ionic liquid-based aqueous two-phase systems (IL-ATPS) were evaluated to extract puerarin. The results indicated that the nature of ILs, the salting-out ability of salt, and the acidity and basicity of the salt-rich solution had important influence on the extraction efficiency. Various factors were optimized systematically, that is, the amount of IL, salt, puerarin, and short-chain alcohol. Under the optimal experimental conditions (the amount of K2HPO4 0.30–0.42 g/mL, [Bmim]Br 0.30–0.36 g/mL and 1.0 mL puerarin stock solution), the extraction efficiency of puerarin was over 99% by a single-step extraction, which indicated that the evaluated IL-ATPS was a prospective extraction medium. Finally, the IL-ATPS was successfully used to extract puerarin from Radix Puerariae Lobatae extracts.
✓ 已验证
DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 34
·20760-20768
·
IF 3.361
Yue Hu,Salah Ahmed Sarhan Al-Shujaa,Bin Zhen,Yaping Zhang,Xianggao Li,Yaqing Feng
Electrophoretic display (EPD) is a type of flexible display which has attracted wide attention. In this work, blue nanosized crystals of cobalt aluminum oxide (CoAl2O4) were precipitated on silica nanoparticles, and then the nanocomposites were coated with an ionic liquid polymer (PIL) to give blue electrophoretic particles. The blue nanocomposites (SCAs) formed possess an excellent spherical structure, and the average diameter is about 188 nm. The porous silica matrix presents a relative light density, and the blue CoAl2O4 pigment offers excellent color. The outside ionic liquid polymer supplies the PIL/SCAs with a light density of 1.7915 g cm−3, excellent hydrophobicity and dispersion stability in the electrophoretic liquid. The fabricated single-particle EPD prototypes show a response time of 165 ms in the EPD cell with a 0.2 mm thickness, which is much faster than the commercial EPDs, and this is probably because of the unique composite structure.
研究领域:
材料科学
·
显示技术
✓ 已验证
DOI
高影响因子
ULTRASONICS SONOCHEMISTRY
·
2017
·
IF 4.218
Xiaojie Yu,Xinjie Bao,Cunshan Zhou,Lei Zhang,Abu El-Gasim A. Yagoub,Hongpeng Yang,Haile Ma
The purpose of this paper was to investigate the effect of ultrasound-ionic liquid (IL) pretreatment on the enzymatic and acid hydrolysis of the sugarcane bagasse and wheat straw. The lignocellulosic biomass was dissociated in ILs ([Bmim]Cl and [Bmim]AOC) aided by ultrasound waves. Sonication was performed at different frequencies (20, 28, 35, 40, and 50 kHz), a power of 100 W, a time of 30 min and a temperature of 80 °C. The changes in the structure and crystallinity of the cellulose were studied by Fourier transform infrared (FT-IR), X-ray diffraction (XRD) and thermal gravimetric analysis (TGA). The amounts of the total reducing sugars, glucose, cellobiose, xylose and arabinose in the hydrolysates were determined. The results of FT-IR, XRD and TGA revealed that the structure of cellulose of both biomass samples remained intact after the pretreatment, but the crystallinity decreased. The enzymatic and acid hydrolysis of the biomass samples pretreated with the ultrasound-IL result in higher yields of the reducing sugars compared with the IL-pretreated sample. Enzymatic hydrolysis of bagasse and wheat straw pretreated with [Bmim]Cl-ultrasound resulted in maximal yields of glucose at 20 kHz (40.32% and 53.17%) and acid hydrolysis resulted in maximal yields of glucose at 40 kHz (33.32% and 48.07%). Enzymatic hydrolysis of bagasse and wheat straw pretreated with [Bmim]OAc-ultrasound show maximal yields of glucose at 28 kHz and acid hydrolysis at 50 kHz. Combination of ultrasound with [Bmim]OAc is more effective than [Bmim]Cl in terms of the yields of reducing sugar.
研究领域:
生物化学工程
·
生物技术
·
可再生能源
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Bio Materials
·
2025
·
IF 4.7
Beibei Lu,Bo Ruan,Jianglin Zhang,Jiaheng Zhang,Yanzhen Liang
Astaxanthin is an antioxidant with extremely high antioxidant activity. However, the stability and solubility of free astaxanthin are poor. Therefore, we prepared astaxanthin-betaine (ASTA-Bet) ionic liquid liposomes through a combination of theoretical calculations and experimental research and studied their physicochemical properties and biological effects. This liposome has good stability and skin permeability. The cumulative permeability of the ASTA-Bet ionic liquid liposome is 22.95 times that of free astaxanthin and 2.41 times that of the ASTA-Bet ionic liquid. The particle size of astaxanthin liposomes was 117.2 nm, and the particle size did not change significantly after 28 days of storage, indicating good stability. Compared with free astaxanthin, the ASTA-Bet ionic liquid liposome has good antioxidant activity and can exert antioxidant and anti-inflammatory effects by regulating the TGF-β1/smad2/smad3 pathway damaged by ultraviolet radiation, which may contribute to the resistance to ultraviolet radiation damage. Therefore, it can be used as a raw material to develop cosmetics with antiaging and anti-inflammatory functions.
研究领域:
药剂学
·
生物化学
·
皮肤科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
IONICS
·
2024
·Vol. 30
·期 5
·2783-2791
·
IF 2.4
Gu Ning,Li Xiaolin,Gao Miao,Liu Zixuan,Liu Qichao,Cao Yang,Sun Youyi
A new magnetic ionic liquid (MIL) based on 1-methylethyl ether-3-butylimidazole and [FeCl 4 ] − is synthesized for application in electrolyte. It is found that the electrochemical performance of electrochemical cell based on MIL electrolyte can be improved by applying magnetic field. The enhanced electrochemical performance is attributed to formation of micro-domain in the mixed electrolyte under magnetic field. The ions of MIL can align along direction of magnetic field, providing efficient transmission path for migration of Li + and Cl − . Under magnetic control, the MIL-based electrolyte does not only retain its wide electrochemical window characteristics, but also solve problem of limiting high viscosity of IL as electrolyte. The work provides a new method to design and prepare high-performance electrolyte for various electrochemical applications.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2024
·
IF 4.7
Ge Li,Chunxiao Jin,Baodong Wang,Ziran Ma,Pan Gao,Shuwei Zhou,Renqin Chang,Yuxue Yue,Jia Zhao
The electrochemical NRR, which can be driven by renewable energy sources, is an emerging strategy for addressing the high energy consumption and CO 2 emission issues caused by the traditional Haber–Bosch ammonia synthesis technique. FePc catalyzes the electrochemical ammonia synthesis reaction well, but intermolecular π-stacking and multi-layer overlapping lead to low NH 3 yields. Here, [Bmim][Cl] and [Bmim][NTF 2 ] ILs were used to induce monolayer dispersion of FePc. Ionic-liquid-induced FePc electrocatalyst, namely FePc/C-700, which was constructed with ILs as the carbon source, gave an excellent NH 3 yield (24.25 μg mg cat −1 h −1 ) and Faradaic efficiency (30.59%) at − 0.1 V. The formation of a monolayer FePc structure was confirmed by HAADF-STEM and XANES. The results of DFT calculations and NRR experiments showed that the monolayer FePc structure promoted N 2 adsorption and inhibited the competitive HER. These results will be useful in the design of active sites of layered macromolecules to achieve efficient electrochemical NRR.
研究领域:
材料科学
·
电化学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
Pharmaceuticals
·
2024
·Vol. 17
·期 10
·1273
·
IF 4.3
Bo Yang,Xu Zhang,Liguo Zhang,Jinjin Wu,Wei Wang,Qiaomei Huang,Zhenyuan Wang,Jichuan Zhang,Tongjie Xu,Chengyu Wu,Jiaheng Zhang
Objectives: To address the poor efficacy and percutaneous penetration of grape seed oil, ionic liquids and nanotechnology were combined to prepare a grape seed oil emulsion. Methods: A novel Menthol-CoQ10 ionic liquid and ionic liquid based grapeseed oil emulsion were prepared and confirmed. Results: The average size of the grapeseed oil emulsion was 218 nm, and its zeta potential was −33.5 mV. The ionic liquid-based grape seed oil emulsion exhibited a transdermal penetration effect 4.63-fold higher than that of ordinary grape seed oil emulsion. Ionic liquid also displayed enhanced efficiency both in vitro and in vivo. It significantly inhibited the production of DPPH free radicals and tyrosinase, inhibited melanin and matrix metalloproteinase-1 (MMP-1) produced by cells, and promoted type I collagen expression in fibroblasts. After 28 days of continuous use, the grapeseed oil emulsion improved the water content of the stratum corneum and the rate of transepidermal water loss, enhanced the firmness and elasticity of the skin, and significantly improved the total number and length of under-eye lines, tail lines, nasolabial folds, and marionette lines on the face. Conclusions: Menthol-CoQ10 ionic liquid is a promising functional excipient for both transdermal delivery increase and efficient enhancement. Ionic liquid and nanotechnology for grape seed oil facial mask displayed significantly enhanced efficacy and permeability.
研究领域:
药学
·
化妆品科学
·
纳米技术
·
皮肤病学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yangzhen Jin,Yebin Zhou,Pengze Zhang,Yi Liu,Chunshan Lu,Xiaonian Li
The catalytic alkaline dehydrochlorination process, characterized by high atom economy, stands as a prevalent method in the synthesis of valuable alkene halides. Nonetheless, the efficacy of ionic liquids (ILs) as catalysts for dehydrochlorination is hindered by challenges such as swift deactivation attributed to decomposition and reduced selectivity without clear causative factors. This investigation employs a systematic approach, integrating Density Functional Theory (DFT) simulations with experimental methodologies, to delve into the mechanisms of IL-catalyzed dehydrochlorination, aiming to elucidate both stabilization strategies and catalytic pathways. The examination of thermal decomposition rates is rooted in a meticulous assessment of the energy barriers associated with decomposition and dissociation processes. The active role of free Cl − is established, albeit its acidification by HCl, which results in diminished catalytic activity. To counteract this acidifying influence, a novel active site denoted as [Cl-KCl] − is conceptually devised to mitigate such effects. Through the strategic implementation of cationic fixation, the IL-KCl combination catalyst is synthesized and empirically confirmed to demonstrate augmented acid resistance while upholding a consistent reaction selectivity of approximately 85 %. This contrasts starkly with the declining catalytic selectivity observed with IL in isolation, plummeting from 85% to 65%. Consequently, the IL-KCl combination catalyst emerges as a promising option for alkali catalyzed dehydrochlorination, offering enhanced stability and sustained high selectivity throughout the catalytic process.
研究领域:
化学工程
·
催化科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2024
·
IF 5.4
Pan Liu,Xiaojuan Chen,Zhiyong Lei,Kezhuo Chen,Wenwen Jin,Wenboxin Wang,Siyuan Liang,Jiaxin Yu,Mingzhang Ao,Longjiang Yu
Persistent bacterial colonization, abnormal inflammatory responses, and impaired angiogenesis pose significant challenges to effective wound repair, particularly in diabetic wounds. Employing exogenous bioactive substances in wound dressings is a recognized approach to dynamically respond to the wound microenvironment and accelerate the repair process. However, this strategy can lead to the development of drug resistance and induce further tissue damage. To address these challenges, we are synthesizing a novel hydrogel for diabetic wound treatment using functional poly (ionic liquid) and modified dextran. The hydrogel is characterized by its excellent tissue adhesion, exceptional self-healing capacity, and substantial compressive deformation. It exhibits broad antibacterial activity, reduces the expression of pro-inflammatory cytokines and enhances the healing in diabetic wounds. Its efficacy is superior to that of the positive control group. This innovative non-releasing hydrogel presents as a promising alternative to conventional antibiotics, offering significant potential for the treatment and healing of diabetic chronic wounds.
研究领域:
生物材料学
·
医学
·
药剂学
✓ 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）