MATERIALS LETTERS
·
2022
·
IF 3.574
Zhiye Qiu,Bin Wu,Huali Miao,Yang Yang,Zili Wang,Minghua Wu,Jiping Wang,Jindan Wu
Herein, a rapid and efficient deposition of polydopamine (PDA) was achieved by using a solvent-assisted method. Decamethyl cyclopentasiloxane (D5) was selected as the solvent, in which the hydrophilic dopamine suspended and approached the fabric rapidly due to its natural affinity with the hydration layer of the cotton fibers . The fast formation of PDA coatings was realized with high utilization of dopamine and improved uniformity. It was found that the type and amount of liquid presoaked by the fabric were critical for the PDA deposition process. This novel method is applicable for the deposition and reaction of various hydrophilic finishing agents on hydrophilic fabrics.
研究领域:
材料科学
·
纺织工程
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产品关联
DOI
高影响因子
Nano Energy
·
2023
·
IF 17.6
Azhar Ali Ayaz Pirzado,Chaoqiang Wang,Xiujuan Zhang,Shuai Chen,Ruofei Jia,Huanyu Zhang,Jinwen Wang,Tehinke Achille Malo,Jie Lin,Geng He,Erdi Akman,Jingsong Huang,Jiansheng Jie
Organic-inorganic halide perovskite single crystals (OIHP-SCs) are promising light-emitting materials for bright electroluminescence (EL) devices due to their superior optoelectronic properties and excellent stability. However, the conventional high-temperature growth methods will inevitably disturb the ordered growth and introduce massive defects in OIHP-SCs, leading to the degradation of device performance. The preparation of thin OIHP-SCs with low trap-state densities for high-performance EL devices remains a formidable challenge. Here, we develop an efficient antisolvent-assisted confined growth (AACG) method for the room-temperature growth of formamidinium lead bromide (FAPbBr 3 ) perovskite SCs. An antisolvent vapour environment is intentionally introduced in the spatially confined growth process to lower the free energy barrier for nucleation, enabling the growth of high-quality FAPbBr 3 SCs at room temperature. Consequently, FAPbBr 3 SCs with ultralow trap-state density of 2.15 × 10 9 cm −3 and amplified spontaneous emission (ASE) threshold of 7.1 µJ cm −2 could be achieved, representing the best results ever reported for FAPbBr 3 SCs. By leveraging the high crystal quality of FAPbBr 3 SCs, SC-based perovskite light-emitting diodes (PeLEDs) with a high luminance of over 26,000 cd m −2 and a peak current efficiency (CE) of 13.02 cd A −1 are demonstrated. Our work opens up new opportunities for the development of high-performance EL devices based on OIHP-SCs.
研究领域:
材料科学
·
光电技术
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产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
·
IF 14.7
Jiang Haojie,Yuan Bin,Guo Hongtao,Pan Fei,Meng Fanmao,Wu Yongpeng,Wang Xiao,Ruan Lingyang,Zheng Shuhuai,Yang Yang,Xiu Zheng,Li Lixin,Wu Changsheng,Gong Yongqing,Yang Menghao,Lu Wei
Integration of functional fillers into liquid metals (LM) induces rheology modification, enabling the free-form shaping of LM at the micrometer scale. However, integrating non-chemically modified low-dimensional materials with LM to form stable and uniform dispersions remain a great challenge. Herein, we propose a solvent-assisted dispersion (SAD) method that utilizes the fragmentation and reintegration of LM in volatile solvents to engulf and disperse fillers. This method successfully integrates MXene uniformly into LM, achieving better internal connectivity than the conventional dry powder mixing (DPM) method. Consequently, the MXene/LM (MLM) coating exhibits high electromagnetic interference (EMI) shielding performance (105 dB at 20 μm, which is 1.6 times that of coatings prepared by DPM). Moreover, the rheological characteristic of MLM render it malleable and facilitates direct printing and adaptation to diverse structures. This study offers a convenient method for assembling LM with low-dimensional materials, paving the way for the development of multifunctional soft devices.
研究领域:
材料科学
·
电子工程
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产品关联
DOI
PubMed
高影响因子
POLYMER
·
2024
·
IF 4.1
Yongzhi Liang,Siyu Wu,Liqiong Lin,Pan Jia,Zheng Zhong
In the field of flexible electronics, eutectogels possess superior environment-tolerant property to hydrogels, better biosafety and economic affordability than ionogels, and have become burgeoning materials for designing multi-functional flexible devices. However, as a new material, it is difficult to achieve excellent mechanical and electrical properties of eutectogels by general preparation methods, due to the large amount of hydrogen bonding in deep eutectic solvents . Herein, we introduce an innovative method for fabricating eutectogels utilizing an indirect strategy that relies on water molecules as a co-solvent, rather than directly synthesizing gels in deep eutectic solvents . The resultant eutectogels boast impressive tensile strength (up to 1.57 MPa), substantial stretchability (approximately 1520 %), exceptional toughness (nearly 8.48 MJ/m 3 ), and elevated ionic conductivity (4.42 mS/cm). As a comparison, the mechanical strength and conductivity of the eutectogel preparing by conventional methodology merely achieves a value of 0.47 MPa and 0.33 mS/cm, only 39.8 % and 7.8 % of the values observed in gels synthesized through our innovative method. Remarkably, unlike the traditional time-consuming diffusion approach to heal the fracture, the eutectogel exhibits ultrafast healing proficiency, with an extraordinary healing efficiency of 91.43 % consummated in just 1 min. Additionally, the conductive eutectogels manifest substantial sensitivity (GF ascending to 7.301) covering a widespread strain range (0–1500 %) with unparalleled linearity (R² up to 0.999). These properties designate the eutectogels as promising candidates for soft human-motion sensor technologies, capable of discerning human motions with pronounced sensitivity and resolute durability across a vast thermal range. Our exploration contributes innovative strategy on devising eutectogels endowed with exceptional mechanical, electrical, and ultrafast healing faculties, which promising to amplify their practical applications of flexible electronics.
研究领域:
材料科学
·
柔性电子学
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产品关联
DOI
高影响因子
ACS Omega
·
2023
·
IF 4.1
Xin Zheng,Zhifeng Duan,Yan Zhuang,Shifeng Zhang,Xinying Cui,Donghui Qin
During oil and gas well construction, lost circulation caused substantial nonoperation time and extra costs, and hydrogel, resilient and environmentally friendly, was one of the major types of material for lost circulation treatment. To migrate the weak bonding and hydrothermal degradation of conventional single network hydrogels, dual network (DN) hydrogel was prepared and immersed in solvents of polyethylene glycol (PEG), ethylene glycol, and glycerol. The swelling of DN gels at different temperatures was studied with water content and swelling rate tests, and the gel structural and morphology was characterized with attenuated total reflectance infrared spectroscopy (ATR-IR) and scanning electron microscopy test. Then, the compression test and fracture plugging performance test were conducted to study the strength of the gel. The results show that compared to those in ethylene glycol and glycerin, DN gel after immersion in PEG (DN-PEG) exhibits greater compression strength and better plugging performance even at high temperatures. The compression strength of DN-PEG was twice that of DN hydrogel before immersion, and its fracture plug breaking pressure can reach over 10.0 MPa. After undergoing hydrothermal treatment at 90 °C, the compression strength of the DN-PEG was nearly 20 times that of the DN hydrogel, and the fracture plug breaking pressure was still 2.81 MPa. According to ATR-IR spectroscopy, as the molecular weight of the solvent increases, more hydroxyl groups in the PEG have better ability to bind with hydrogen bonds, which greatly inhibits the swelling and polymer chain breakage, thereby reducing hydrothermal degradation in the strength of the dual-network hydrogel. Our work proposed an effective method to reduce the degradation of hydrogel in water at high temperature, and the prepared DN-PEG hydrogel was a promising material for lost circulation treatments in fractured formation.
研究领域:
石油工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER
·
2025
·
IF 4.5
Yiming Du,Hua Wang,Xiaofei Li,Hang Li,Wei Zhang,Yanyan Liu,Xingyou Tian
Self-healing materials that can autonomously repair physical damage and restore mechanical properties have significant potential in advanced technologies, including flexible electronics and smart coatings. In this work, we synthesized poly(dimethylsiloxane)-polyurea (PDMS-IU x MU 1-x ) to study the effect of multiple hydrogen bonds on the mechanical and self-healing properties and found that improving the dynamics of strong hydrogen bonding is the key to breaking the trade-off between mechanical and self-healing properties. Inspired by the octopus, we introduced different solvents to improve the healing performance. Ultimately, the stiff PDMS-MU samples (1.18 MPa, 1282 %), which were difficult to heal at elevated temperatures, achieved a remarkable strength recovery (66.7% in 10 min, 25 °C). We verified the effect of this strategy on other polymers and achieved rapid healing at ambient temperature (88% in 10 min and 98.5% in 3 h) and at -20 °C (98.8% in 24 h), surpassing many reported solvent-assisted healing materials. Moreover, our findings revealed that ethanol significantly improves the dynamics of hydrogen bonding, increases the mobility of polymer molecular chains, reduces the activation energy, and ultimately promotes healing. This research offers valuable insights into designing high-performance self-healing materials that are reprocessable and energy-efficient, addressing key challenges in the field and promoting the development of self-healing elastomers in flexible and wearable devices.
研究领域:
材料科学
·
高分子化学
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柔性电子
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产品关联
DOI
高影响因子
ChemistrySelect
·
2022
·Vol. 7
·期 37
·e202202793
·
IF 2.307
Chang Liu,Zhuang Liu,Jianlin Chen,Qiaoqiao Tian,Lin Wu,Zhuoyin Peng,Jian Chen
Graphical CsPbBr 3 films with high crystallinity, few grain boundaries and good coverage are prepared via antisolvent assisted crystallization by multi-step spin-coating. The power conversion efficiency (PCE) of devices based on antisolvent treated CsPbBr 3 films reaches 6.5 % whereas the devices without the antisolvent treatment exhibit maximum PCE of 4.97 %. All-inorganic CsPbBr 3 perovskite solar cells (PSCs) are expected to form semitransparent or top-cell of tandem solar cells with Cu(In,Ga)Se 2 or crystalline silicon solar cells owing to their outstanding environmental tolerance and wide bandgap. However, the commonly solution-processed CsPbBr 3 perovskite films usually suffer from inferior film quality. Herein, we propose antisolvent assisted crystallization method to prepare CsPbBr 3 films by multi-step spin-coating process. During the spin-coating step, the underlying PbBr 2 layer is treated with anisole antisolvent in different amount of 0, 50, 100, 150, and 200 μl, respectively, and heated at 80 °C for 30 min. Thus, CsPbBr 3 films with high crystallinity, less grain boundaries and good coverage are prepared. The champion power conversion efficiency (PCE) of devices based on antisolvent treatment reaches 6.5 %, compared to that of devices without antisolvent treatment (PCE 4.97 %). Moreover, the devices treated with antisolvent without encapsulation exhibit good stability under ambient conditions. The antisolvent assisted crystallization provides an effective route for improving the quality of CsPbBr 3 films and promotes the commercialization of all-inorganic CsPbBr 3 PSCs.
研究领域:
材料科学
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光伏技术
·
化学工程
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产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2015
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IF 4.169
Liu-Lian Huang,Hui-Chao Hu,Li-Hui Chen
This work reports on a novel method for the determination of total acid (TA) in biomass hydrolysates by a solvent-assisted and reaction-based headspace gas chromatography (HS-GC). The neutralization reaction between the acids in hydrolysates and bicarbonate in an ethanol (50%) aqueous solution was performed in a closed headspace sample vial, from which the carbon dioxide generated from the reaction was detected by HS-GC. It was found that the addition of ethanol can effectively eliminate the precipitation of some organic acids in the biomass hydrolysates. The results showed that the reaction and headspace equilibration can be achieved within 45 min at 70 °C; the method has a good precision (RSD < 3.27%) and accuracy (recovery of 97.4–105%); the limit of quantification is 1.36 μmol. The present method is quite suitable to batch analysis of TA content in hydrolysate for the biorefinery related research.
研究领域:
分析化学
·
生物工程
✓ 已验证
DOI
高影响因子
Nanoscale
·
2025
·
IF 5.1
Mengjing Zhu,Huateng Li,Qilin Guo,Jia Guo,Changchun Wang
Self-assembly of colloidal particles in photocurable monomer provides a facile way to fabricate functional photonic crystal (PC) films. However, the inadequate optical performance of PC films limits their practical applications. In this work, we develop a new method to fabricate versatile PC films with enhanced optical performance assisted by solvent. The corresponding reflection intensity can reach 79% at the particle volume fraction of 45%, which is nearly 5 times higher than that of non-solvent-assisted PC films. Additionally, the maximum reflection intensity of solvent-assisted PC films is approximately twice that of non-solvent-assisted PC films. Meanwhile, the transmittance of the obtained PC films at the thickness of 94 μm remains above 85%, and the rubber-like matrix P(PEGPEA) further endows the PC film with high flexibility. This preparation process of PC film is straightforward and extensible in terms of colloidal particles, solvent and monomer. Based on the high-quality PC films, we fabricate multi-level anti-counterfeiting labels through the subsequent swelling of a second monomer, which can present distinct response to water and achieve multi-level visual effects combining with transparency, flexibility and angle-dependent effect of the as-prepared PC films. This work offers a novel and simple method to fabricate functional PC films with enhanced optical performance by increasing the particle volume fractions, which show great potential in anti-counterfeiting applications.
研究领域:
材料科学
·
光学
·
纳米技术
·
高分子科学
·
安全技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
HOLZFORSCHUNG
·
2018
·Vol. 72
·期 11
·973-978
·
IF 2.079
Hui-Chao Hu,Tong Zeng,Shaokai Zhang,Lihui Chen,Liulian Huang,Yonghao Ni
A solvent-assisted and pyrogallol (PG)-protected headspace gas chromatography (HS-GC) method was developed to determine the pinene (α- and β-pinene) content in the kraft pulping black liquor (BL). Ethanol (EtOH) addition eliminated pinene’s micelles in BL by complete dissolution in the EtOH/BL medium. PG was applied to protect pinene from oxidation during the sample storage and measurement. The results showed that, with a 25% (v/v) of EtOH content and a 0.1 g of PG in 5-ml of sample solution, a rapid and stable pinene HS extraction can be obtained in 20 min at 80°C. The method has high precision with relative standard deviations within 4.2%. The sensitivity [limits of quantification (LOQ) are ~140 μg l −1 ] was high, and a good accuracy (recovery=96.0–104%) was typical for the pinene detection. The presented method is simple, rapid, accurate and is suitable for pinene quantification in biorefinery related processes and it leads to the preparation of high-value chemicals.
研究领域:
分析化学
·
制浆造纸工程
·
生物炼制
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Shujie Tie,Deyu Xin,Siyin Dong,Bing Cai,Jianguo Zhu,Xiaojia Zheng
Perovskite X-ray detectors are promising in medical diagnosis and industrial inspection because of their high sensitivity and low limit of detection (LoD). Lead-free MA3Bi2I9 perovskite derivatives show good stability, environmental friendliness, and excellent electronic properties for sensitive X-ray detection. Here, we report the fabrication of MA3Bi2I9 X-ray detectors by a facile, high-throughput, and low-cost antisolvent-assisted synthesis (ASAS) method with a high product yield >90%. Electronic characteristics of MA3Bi2I9 were modulated by Cs alloying, leading to a high resistivity (1011 Ω cm) and a low dark carrier concentration (107 cm–3). As a result, (MA0.7Cs0.3)3Bi2I9-alloyed X-ray detectors show an LoD of 12.8 nGyair s–1 and a sensitivity of 130 μC Gyair–1 cm–2, outperforming that of a commercialized amorphous selenium (a-Se) detector. This study develops high-performance lead-free X-ray detectors with a robust, low-cost, and scalable fabrication process, which will pave the way for adopting polycrystalline MA3Bi2I9 in X-ray detectors.
研究领域:
材料科学
·
医学影像
·
电子器件
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2015
·
IF 5.337
Chongyang Sun,Yiping Guo,Huanan Duan,Yujie Chen,Yunlong Guo,Hua Li,Hezhou Liu
Photoelectric conversion efficiency enhancement of the emerging highly efficient, low cost organic–inorganic perovskite solar cells, which is considered as a promising candidate in solar energy industry, has received great attention. And, it is investigated that the device performance can be significantly improved simply by a convenient morphology controlling approach aiming at obtaining uniform and high coverage of perovskite. However, reliable means to prepare high-quality perovskite layer remains to be a big challenge. In this work, we proposed a novel, simple and efficient method in optimizing the morphology of CH 3 NH 3 PbI 3 perovskite films. Utilizing this excellent rapid fabrication process, our devices present an average power conversion efficiency of 9.65% with remarkable reproducibility, which is about 42% higher with respect to devices produced by regular protocol. This work sheds a light on enhancing performance of the state-of-the-art solar cells by exploring novel methods to prepare photoactive layers of high-quality.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）