Inorganic Chemistry Frontiers
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2024
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IF 6.1
Xin Kou,Xijin Zhao,XingYao Xiong,Shenglin Yuan,Hui Huang,Xiangcheng Li,Yongpeng Zhao
The development of magnetic–electric synergistic microwave-absorbing materials represents a pivotal strategy for optimizing impedance matching, overcoming skin effects, and enhancing absorbing performance. Achieving a uniform distribution of magnetic particles within the dielectric material during preparation poses an immense challenge. This study employed PMMA-assisted electrospinning to achieve a homogeneous dispersion of magnetic particles on the surface of 1D or 2D carbon nanomaterials. The electrospinning process effectively blends the precursor of the magnetic material with the carbon nanomaterials while utilizing PMMA as a sacrificial template to anchor and evenly disperse the magnetic particles onto the carbon material's surface. As anticipated, this approach ensures uniform modification of magnetic particles within the carbon matrix, thereby achieving ideal interface uniformity. Comparative analysis reveals that optimized samples incorporating carbon nanotubes and graphene exhibit significantly reduced minimum reflection loss by 294% and 313%, respectively, compared to those without electrospinning treatment. Further examination of the composite microstructure and electromagnetic parameters underscores that excellent dispersion of magnetic particles is crucial in improving impedance matching. This article presents a controllable and easily scalable preparation method for constructing interface–uniform dielectric–magnetic composite structures with exceptional homogeneity.
研究领域:
材料科学
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电磁学
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2020
·
IF 4.469
Congxue Yao,Weiyi Xing,Chao Ma,Lei Song,Yuan Hu,Zeyuan Zhuang
In this work, a novel phosphorous containing UV-curable monomer (PA) was synthesized by the reaction of phytic acid and glycidyl methacrylate. The structure of PA was confirmed by 13 C NMR, 1 H NMR, 31 P NMR and FTIR. Pyrolysis gas phase products of PA cured coating mainly include CO, CO 2 , H 2 O, alkyl-containing compounds, carbonyl-containing compounds and aromatic compounds. Cooperated with other two kind of reactive monomers, TAEP and TGICA, PA showed excellent fire protection effect for PMMA matrix, extending fireproof time of PMMA for more than twenty minutes. The SEM results of the carbon residues show that a certain coating prepared can form a uniform and complete expanded carbon layer, resulting in protecting the PMMA matrix from being ignited.
研究领域:
材料科学
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火灾安全工程
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 135
·期 15
·46127
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IF 1.86
Hongxia Liu,Changbing Zhou,Xinyue Liu,Yang Xu,Simin Geng,Yunhua Chen,Chun Wei,Chuanbai Yu
We demonstrate a facile route to prepare novel composite microspheres based on Pickering emulsion template stabilized by cellulose nanocrystals prepared from sisal fiber (SCNCs). The oil phase of the Pickering emulsions contains hydrophobic drug curcumin and poly(methyl methacrylate) (PMMA). Curcumin loaded PMMA composite microspheres coated by SCNCs (Cur-loaded PMMA@SCNC CMs) were obtained after the evaporation of dichloromethane. The structure and morphology of CMs were characterized by polarized optical microscope (POM), confocal laser scanning microscope, scanning electric microscope, and Fourier transform infrared spectroscopy. The stability and release kinetics of curcumin were evaluated based on spectrophotometric measurements. Overall, these results show that Cur-loaded PMMA@SCNC CMs display long-term photostability and good encapsulating ability for curcumin. This work offers an effective route of preparing new functional microsphere for the delivery of bioactive compounds. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46127.
研究领域:
材料科学
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药物递送
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生物医学工程
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
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IF 9.5
Wei Zhou,Xiaodie Zhu,Jing Yu,Dedan Mou,Hongxing Li,Lingyu Kong,Tianchun Lang,Lingling Peng,Wenbo Chen,Xuhui Xu,Bitao Liu
In recent years, novel metal halide scintillators have shown great application potential due to their tunable emission wavelength, high X-ray absorption, and high luminescence efficiency. However, poor stability and complex device packaging remain key issues for metal halide scintillators, making it difficult to achieve high-resolution and flexible X-ray imaging applications. To address the above issues, a multiprocessing strategy was introduced to prepare Cs3Cu2I5@PMMA scintillator films for long-term stable application, mainly undergo different annealing treatments to make Cs3Cu2I5 crystals to accurately nucleate and then grow in-situ in the PMMA matrix. Then, a series of characterization results illustrate that the prepared Cs3Cu2I5@PMMA scintillator films have high crystallinity, uniform size, excellent flexibility, high stable photoluminescence (PL) and radioluminescence (RL) performance, and high-resolution X-ray imaging capability. Most importantly, Cs3Cu2I5@PMMA scintillator films can not only provide clear and accurate imaging recognition of objects with different complex structures but also maintain stable X-ray imaging quality within 60 days and can achieve flexible X-ray imaging. Therefore, we have provided an effective strategy for producing high-quality scintillator films to meet the multidimensional needs of a new generation of scintillators.
研究领域:
材料科学
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放射学
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2021
·Vol. 37
·期 3
·549-557
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IF 1.307
Wang Yan,Xi Peng,Shu Dengkun,Meng Shuang,Liu Kai,Wang Xiaoqing,Cheng Bowen
M ulti-functional nanofibers are playing an important role in the optical field, and are widely used in fluorescence indication, product anti-counterfeit identification and smart clothing. Nanofibers with photoluminescence and photochromic functions are already attracting more interest from researchers. In this work, based on electrospun technology, the modified-PMMA nanofibers[PMMA=poly(methyl methacrylate)] with photoluminescence and photochromic functions were prepared through the design of the sheath-core structure(SCNFs 1–4). Compared with other samples, SCNF-4 shows outstanding photoluminescence and photochromic functions. SCNF-4 can produce green light and its fluorescence intensity and fluorescence lifetime can reach 7144 a.u. and 1031.32 µs, respectively. In photochromic functions, SCNF-4 can show purple in 1 min under the 365 nm ultraviolet light, and the color can be preserved for more than 4 h under the sunlight. When SCNF-4 is irradiated by far infrared light, the color of the samples can fade quickly in 40 s. Under the irradiation of ultraviolet light of different wavelengths, SCNF-4 can display multi-color fluorescence and achieve a reversible transition between white and purple. The design of the sheath-core structure realizes the complementarity of photoluminescence and photochromic functions of the electrospun modified-PMMA nanofibers, which is important to promote the wide application of multi-functional nanofibers in the optical field.
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
XianWei Wang,Yue Zhai,Yuanhui Chen,Wei Zhang,Pei Liang,Qiangqiang Zhu,Hong Zhang,Juan Kang,Le Wang
s The development of a highly sensitive and reliable surface-enhanced Raman scattering (SERS) substrate is crucial for overcoming the limitations in its practical applications. Herein, a novel 3D waffle-like SERS substrate with high activity is constructed for detecting trace amounts of myricetin in complex analytes extracted from green tea. The substrate is achieved through a layered ternary film structure, where ordered poly (methyl methacrylate) opal photonic crystals (PMMA OPCs) serving as a 3D hot spots template and enhancing the performance of CsPbBr 3 film that facilitates efficient charge transport, and an Au film covered over the CsPbBr 3 film modulating the vibronic coupling and providing plasmonic hot spots. The PMMA-CsPbBr 3 -Au substrate exhibits a low detection limit of 10 −10 M with an 8.9 × 10 7 enhancement factor, signal repeatability and stability for R6G molecules. Furthermore, the SERS detection of myricetin content in Longjing green tea from different years is carried out, and the results show a good linear positive correlation with storage years (R 2 =98.2 %), demonstrating the potential application of 3D substrate for sensitive and reproducible SERS.
研究领域:
材料科学
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分析化学
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产品关联
DOI
高影响因子
Analytical Methods
·
2024
·Vol. 16
·期 48
·8380-8389
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IF 2.7
Zhuoxing Wu,Bolin Yu,Huien Gong,Yiquan Tang,Jiaxian Chen,Yingying Jian,Danmei Wei,Hongyun Meng,Chunhua Tan
The concentration of formaldehyde in the environment must be precisely monitored, as it is closely linked to human health. In this paper, a decaboryl derivative formaldehyde fluorescent probe (M1) was synthesized for the first time by introducing a 5-amino-isoquinoline group into a decaborane parent. Using theoretical calculations, 1H-NMR, 11B-NMR, HR-MS, and FT-IR, the molecular structure of the probe was determined and its response mechanism to formaldehyde was examined. The fluorescence response of the probe to formaldehyde was then tested, revealing an augmented response to formaldehyde in a solution of 0–600 μM, with a detection limit of 4.18 × 10−6 M. The results show that the formaldehyde fluorescence probe has the advantages of good linearity, strong anti-interference and high sensitivity. On this basis, a fiber optic formaldehyde fluorescence sensor based on an M1/PMMA thin film was constructed in this paper. This fiber optic fluorescence sensor, with its high selectivity, low detection limit, online and remote monitoring, and other advantages, was successfully applied to the detection of formaldehyde in both food and aqueous solutions, with results that were reliable compared to those of acetone. The detection limit of formaldehyde increased to 6.9 × 10−8 M. The potential for its utilization in the chemical, biological, environmental, and other formaldehyde detection fields is quite promising.
研究领域:
环境科学
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分析化学
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生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Shuzhen Dou,Ning Li,Xueyun Wang,Qunyan Zhu,Zhongshun Wang,Nan Lu
Rapid quantification of peptides by matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) is a challenge. Herein, we prepared a super-hydrophobic poly(methyl methacrylate) (PMMA) structured chip for quantifying peptides without internal standard by improving the detection reproducibility and sensitivity. The chip was formed by PMMA microspheres through a self-assembly method. As a good adsorbent of peptides, PMMA microspheres make peptides distributed uniformly on the chip, resulting in the elimination of the coffee ring effect and the homogeneous co-crystallization of peptides/matrix. The relative standard deviations (∼ 10 %) and coefficients of determination (∼ 0.99) are satisfactory when detecting 3 standard peptides, which show that the chip is applicable for rapid quantification of peptides. The limit of detection is improved by 1000-fold on this chip compared with conventional steel target because of the enrichment of the super-hydrophobicity. It can be concluded that the detection reproducibility and sensitivity are significantly improved by the super-hydrophobic structured-PMMA chip. The applicability of the chip for practical samples is demonstrated by quantifying bacitracin A in milk extract and bradykinin1-7 in serum with good linearities. The structured-PMMA chips exhibit competitive advantages for quantitative analysis of peptides, which have a great potential for proteomic research.
研究领域:
分析化学
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生物医学工程
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蛋白质组学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2024
·
IF 6.5
Shilong Gu,Xiang Sun,Xuwang Ye,Junhao Yang,Ye Liu,Ying Bai,Chaofeng Chen,Ming Yang,Luoxin Wang,Shiwen Yang
High-transparent material plays a pivotal role in optical engineering, yet faces practical challenges such as susceptibility to abrasion and ultraviolet degradation. To address these issues, we propose a simple approach for obtaining a multifunctional transparent polymethyl methacrylate. In this study, MWCNT@Fe 3 O 4 was utilized as a hybrid core covalently bonded to a silane coupling agent, which was subsequently ion-exchanged with a surfactant to yield monodisperse MWCNT@Fe 3 O 4 nanofluids. These nanofluids were then blended with polymethyl methacrylate through a simple casting process, resulting in a transparent composite material with good transparency (over 85 %), low friction (coefficient of friction < 3), UV resistance (UV absorption up to 73.35 %), and antistatic properties. The MWCNT@Fe 3 O 4 nanofluids combine the benefits of liquid and solid lubricants by reducing the friction coefficient and enhancing the wear resistance of the composite material. Moreover, the fluidity of MWCNT@Fe 3 O 4 nanofluids forms an anti-friction layer during friction, thereby improving the overall anti-friction properties of the composite material. Additionally, the hybrid core enhances the anti-ultraviolet performance of the composite film while the long chain lubricating layer improves its antistatic and antifouling capabilities. By incorporating MWCNT@Fe 3 O 4 nanofluids as a filler, we have developed multifunctional transparent polymethyl methacrylate material that holds promise for advanced applications.
研究领域:
材料科学
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光学工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2024
·
IF 3.3
Jiao Wu,Jingxuan Cui,Aihu Feng,Kun Liu,Yun Yu
Introducing “spacer” materials into Ti3C2Tx layers is a powerful approach to reduce layer stacking and enhance the utilization of active sites in capacitive deionization (CDI). In this research, porous carbon spheres derived from polymethacrylates (PMMA) act as the “spacer” material, and the Ti3C2Tx/C composite is prepared through a straightforward technique of mixing followed by annealing. Through the cooperative effect of the “separation” of Ti3C2Tx nanosheets and the porous nature of the carbon spheres, Ti3C2Tx/C has a large specific surface area of 96.01 m2 g–1, a pore volume of 0.2306 cm3 g–1, and a well-developed mesoporous structure. Benefiting from the increased adsorption sites coupled with lower migration resistance, Ti3C2Tx/C achieves an ion adsorption capacity of 24.29 mg g–1 and ion adsorption rate of 0.0485 mg g–1 s–1 in 1000 μS cm–1 NaCl solution at 1.2 V, reflecting an increase of 76 and 166%, respectively, compared to m-Ti3C2Tx (13.8 mg g–1 and 0.0485 mg g–1 s–1). Besides, it is established that the ion adsorption process of Ti3C2Tx/C is more accurately described by the second-order kinetic module.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
ORGANIC ELECTRONICS
·
2018
·
IF 3.68
Xiao Gong,Wenwen Ma,Yunxia Li,Lingqi Zhong,Wenjing Li,Xiujian Zhao
Luminescent solar concentrators (LSCs) as alternatives to solar cells are suitable for photovoltaic windows. Generally semiconductor quantum dots are employed as emitters for LSC fabrication due to their advantages such as photostability, spectral tunability, and high photoluminescence quantum yield . In this paper, we used low cost and environmentally friendly N-doped carbon-dots (N-CDs) as phosphors to fabricate N-CDs/PMMA slab based luminescent solar concentrators. The high-performance N-CDs/PMMA slab based LSCs with an external optical efficiency of 12.23% could be achieved when the concentration of N-CDs within the PMMA matrix is 0.08 wt%. Our results showed that N-CDs/PMMA slab based luminescent solar concentrators make the practical use of LSCs more feasible because of the unique properties of N-CDs.
研究领域:
材料科学
·
可再生能源
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2015
·
IF 2.358
Ling Yang,Shuxue Zhou,Limin Wu
Titania/poly(methyl methacrylate) core/shell (TiO 2 /PMMA) latex was synthesized by miniemulsion polymerization and further mixed with modified colloidal silica to create waterborne nanocomposite coatings (M-SiO 2 /TiO 2 /PMMA). The coatings were undergone accelerated weathering tests and their surface wettability, transparency, and morphology were monitored as a function of weathering time. Superhydrophilic surfaces were attained after 27–34 h aging, being attributed to the unique distribution of TiO 2 nanoparticles in PMMA phase. In contrast to the coating based on the mixture of M-SiO 2 , TiO 2 nanoparticles, and PMMA latex, this time is quite short and absolutely benefit for their outdoor application. Due to the degradation of organic matrix, transparency reduction and film thickness loss of coatings took place in weathering tests. Nevertheless, these undesired evolutions can be alleviated by decreasing film thickness or using adequate quantity of TiO 2 /PMMA latex. Photodegradation experiments of methyl blue indicate that the formed superhydrophilic coatings are excellent in self-cleaning performance.
研究领域:
材料科学
·
纳米技术
✓ 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）