ANALYTICAL CHEMISTRY
·
2022
·
IF 8.008
Yulin Zhai,Guoli Li,Kai Peng,Zhaosong Ge,Weibing Zhang,Duxin Li
The resolving power of multiple dimensional liquid chromatography (mD-LC) is multiplicative as it adds dimensions. However, the issue in creating a preparative mD-LC system is that the higher the dimensionality, the more complicated the system configuration. Thus, we presented a new configuration of preparative mD-LC using one set of LC modules and trapping array-based multiple heart-cut interfaces. A preparative two-dimensional liquid chromatography (2D-LC) separation of herbal medicine formulation produced 40 compounds with a purity of >90%. During the separation process, the interface stores the fractions and allocates positions for the fractions from a different dimension; LC draws the fraction from the interface, makes nD separation, and sends isolated fractions to the interface. By repeating this process, we achieved variable dimensionality of LC separations. We also presented a preparative 3D-LC separation of herbal medicines to validate the principle of “less configuration and more dimensionality”. Thus, we can explore the higher dimensional preparative separations. The developed preparative mD-LC displayed exceptional power in the isolation of various compounds and has great potential in the application of natural products.
研究领域:
分析化学
·
天然产物化学
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DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Kexin Li,Kexin Cheng,Huan Liu,Guanhua Cai,Yuan Wang,Yingying Zhang,Dasheng Xu,Dengyong Liu
The flavor retention plays a critical role in the presence of rich flavor profile of meat products. However, the interaction between collagen and furan derivatives has not been previously reported. In this study, the interaction between collagen and furan derivatives during heating was investigated using multidimensional spectroscopy and gas chromatography–mass spectrometry (GC–MS). The results revealed that the collagen structure was disrupted during the heating process, causing its depolymerization and an increase in the absolute value of zeta potential. The heating treatment induced a structural transformation in the collagen from large and ordered sheets to smaller and irregular aggregates. Meanwhile, the binding ability between collagen and furan derivatives was also significantly increased during the heating process due to the increased exposure of sulfhydryl groups and a rise in surface hydrophobicity. These findings will provide valuable insights into the retention of volatile compounds in the meat products.
研究领域:
食品科学
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生物化学
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产品关联
DOI
PubMed
高影响因子
POLYMER
·
2024
·
IF 4.1
Long Tan,Ke Su,Hui Quan,Ruolin Han,Yongyou Wang,Dali Gao,Zheng Zhou,Qifang Li,Guang-Xin Chen
The construction of multidimensional fillers provides new ideas for the development of composite materials. In this study, one-dimensional (La 0.5 Nb 0.5 ) x Ti 1-x O 2 ceramic nanorods (x-LNTO NRs) and 1-LNTO ceramic materials with three-dimensional fiber structure network (3D-1-LNTO) were prepared by electrospinning. These materials were used as fillers to prepare x-LNTO NRs/PVDF composites and 3D-1-LNTO/PVDF composites. Compared with the 1-LNTO NPs/PVDF composites, the 1-LNTO NRs/PVDF composites showed better dielectric properties, with a dielectric constant of 40 and a dielectric loss of 0.12 at a fill content of 60 wt%. The 3D-1-LNTO/PVDF composites achieved a high dielectric constant at a low filler content, the composite achieved a dielectric constant of 25 at a fill content of only 10 wt%, which is 2.5 times higher than that of pure PVDF. Compared with x-LNTO NRs, 3D-1-LNTO is more obvious for improving the dielectric properties of composites. The construction of continuous fiber network is the main reason for the enhancement of dielectric constant, and this study provides a new experimental idea for the construction of multi-dimensional high dielectric fillers.
研究领域:
材料科学
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聚合物工程
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DOI
高影响因子
DALTON TRANSACTIONS
·
2022
·Vol. 51
·期 30
·11316-11324
·
IF 4.569
Yiqin Gong,Fan Ye,Qiliang Zhu,Wei Yan,Jianhua Shen,Kan-Hao Xue,Yihua Zhu,Chunzhong Li
Lead halide perovskite CsPbBr3 quantum dots (QDs) possess several desirable features which enable them to be promising candidates for photocatalysis. However, the instability caused by their inherent liquid-like ionic properties hampers their further development. Herein, this work employs the surficial molecular modification strategy and a multi-dimensional structure design to ease the instability issue. The additive 2-phenylethanamine bromide (PEABr) can serve as a ligand to compensate for stripping the amine ligands and passivate the surficial bromide vacancy defects of CsPbBr3 QDs in photocatalysis. In addition, PEABr acts as a reactant to form 2D and quasi-2D perovskite nanosheets. The addition of a small amount of these nanosheets into QDs can enhance their general stability due to their unique layered structures. Moreover, PEABr can trigger the phase transition of cubic CsPbBr3 into tetragonal CsPb2Br5. The newly formed Z-scheme homologous heterojunctions further improve the catalytic performance. Simulated photocatalytic dynamics reveals that our multi-dimensional structure favors decreasing the reaction barrier energy and then facilitating the photocatalytic reaction. Therefore, the electron consumption rate of our multi-dimensional perovskites doubles that of pristine CsPbBr3 QDs and also has superior long-term stability.
研究领域:
材料科学
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化学工程
·
能源科学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Lei Yuan,Na Xin,Yu Liu,Weidong Shi
Research on environmentally friendly energy storage devices is an important strategy to solve the energy crisis and environmental pollution. Herein, a novel self-supporting electrode based on multi-dimensional Co 3 O 4 /NiCo 2 O 4 hierarchical flakes coating on graphene/carbon sphere (rGO/CS) conductive substrate is reasonably designed. Firstly, a simple hydrothermal method is used to synthesize NiCo 2 O 4 with both flake and nanoneedle morphology on the rGO/CS substrate. Subsequently, Co 3 O 4 /NiCo 2 O 4 @rGO/CS is obtained by in-situ growth of metal organic frameworks polyhedrons on the surface of NiCo 2 O 4 flakes followed by calcination. In the unique structure, benefitting from the synergy between the substrate and multi-element transition metal oxides, the integrated film shows good conductivity, high specific surface area and abundant active sites. Thus, the binder-free electrode exhibits an ultra-high specific capacitance of 3876.6 F g −1 (538.4 mA h g −1 ) at 1 A g −1 . A hybrid supercapacitor is assembled with activated carbon as the negative electrode and Co 3 O 4 /NiCo 2 O 4 @rGO/CS as the positive electrode, the device shows a highest energy density of 56.5 Wh kg −1 at a power density of 800 W kg −1 . After 6000 charge–discharge cycles, 92.5% of the initial capacitance can be still maintained, indicating its good application prospects in energy storage materials.
研究领域:
材料科学
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能源存储
·
纳米技术
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产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Xingyue Wu,Baozhu Yang,Yiping Qiu,Junyao Li,Yong Qin,Yong Kong
Three-dimensional (3D) Mo-doped CuCoSe (Mo-CuCoSe) nanoflowers and zero-dimensional (0D) CdSe nanodots are successively grown on the surface of one-dimensional (1D) CuO nanowires through a two-step electrodeposition strategy. As the supporting matrix, the 1D CuO nanowires can greatly alleviate the aggregation of the Mo-CuCoSe. The 3D Mo-CuCoSe nanoflowers show unique hydrangea-like structure, which can not only enhance the diffusion of electrolyte ions/electrons, but also facilitate the Faraday redox reactions. The 0D CdSe nanodots play a pivotal role in the enhancement of capacitance retentions. Due to the synergistic effect of CuO nanowires, Mo-CuCoSe nanoflowers and CdSe nanodots, the multi-dimensional CuO/Mo-CuCoSe/CdSe shows a high specific capacitance of 4600 mF cm −2 (at 1.0 mA cm −2 ) and excellent cyclic stability. Further, activated carbon (AC) and the multi-dimensional CuO/Mo-CuCoSe/CdSe are assembled to construct an asymmetric supercapacitor (ASC), which exhibits a maximum energy density of 30.3 Wh kg −1 at 214.2 W kg −1 .
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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Jianle Xu,Zihan Wang,Chuannan Ge,Xiaosi Qi,Qiaoliang Bao,Chuyang Liu
Exploring efficient microwave absorbing materials (MAMs) which could convert electromagnetic (EM) energy into thermal energy represents an approbatory vision to reducing EM radiation and interference. Designing of mixed-dimensional structure with multiple interfaces represents the available target to investigate an ideal MAMs, which maximizes the superiority of mixed-dimensional structure in electromagnetic wave absorption (EMWA). Herein, we take full advantage of multiple interfaces engineering of MXene for optimizing the impedance matching to improve EMWA, MXene-based mixed-dimensional structure was designed by incorporating three-dimensional Fe 3 C@Carbon layers coated zero-dimensional Fe 3 O 4 nanoparticles (NPs) supported two-dimensional MXene nanosheets (MXene/Fe 3 O 4 @Fe 3 C@Carbon, MFC). The Fe 3 O 4 @Fe 3 C@C with Core@shell structure arrests the essentially self-restacked of MXene and provides various attenuation mechanisms for the incident electromagnetic waves (EMWs). By regulating the carbonization temperature, the MFC exhibits enhanced EMWA property which is attributed to the characteristic structure and optimized dielectric-magnetic synergy effect. The minimum reflection loss (RL min ) value of MFC can reach to −64.3 dB with a matching thickness of 1.73 mm. Otherwise, the maximum effective absorption bandwidth (EAB) (RL min < -10 dB) reaches 6.42 GHz at only 1.5 mm. Thus, our study refers a novel-fire enlighten to develop excellent mixed-dimensional microwave absorbent based on MXene.
研究领域:
材料科学
·
电磁学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhumin Yu,Kai Zhao,Yanbo Zhao,Mengyue Wu,Rong Qian,Xinzhou Wu,Wenming Su,Yuan-Qiu-Qiang Yi,Changqing Ye,Yanlin Song
Multi-dimensional anti-counterfeiting technologies possess multiple color/pattern variations under different conditions, opening up new avenues in information security. Herein, inspired by the blue-ringed octopus, novel multi-dimensional anti-counterfeiting devices are reported by combining electrochromism and structural color with different coloration mechanisms, that is, by introducing colloidal photonic crystals (PCs) in electrolyte of the electrochromic devices (ECDs). Through actively manipulating voltage or passively changing environment background, the degree of light reflectance and transmittance of PCs can be finely modulated, thus realizing the display and hiding of structural colors of devices. Besides, they also feature distinct color evolution under different viewing angles, enabling more optical information to be carried. Laser-etched patterned devices have also been successfully achieved, showcasing superior triple anti-counterfeiting abilities in terms of optical information. Notably, such inherent patterns can further be innovatively switched to different preset background patterns through the synergy of voltage stimulation and background colors. Based on this, a high-level anti-counterfeiting system has been demonstrated, providing the ability to deliver multiple distinct optical information on-demand. It is believed that such strategy of combining electrochromic and structural color will pave a new platform for designing advanced multi-dimensional anti-counterfeiting devices.
研究领域:
材料科学
·
光学工程
·
仿生学
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产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2024
·
IF 4.3
Fang Li,Chunling Yin,Kaidi Lv,Wenbo Chen,Liuchuang Zhao,Zhimin Liu,Leqian Hu
Fluorescent probes for metal ion recognition can be divided into selective probes, weakly selective probes, and non-selective probes roughly. Weakly selective probes are not often used for quantitative analysis of metal ions due to their overlapping spectra resulting from simultaneous interactions with multiple metal ions. Conversely, the different metal ions contained in herbal medicine extracts from different geographical origins will produce corresponding fluorescence fingerprint profiles after interaction with weakly selective fluorescence probes. The performance can be used in the study of origin tracing of food or Chinese herbal medicine. Weakly selective fluorescent probes of benzimidazole derivatives have been synthesized and attempted to be used in the origin tracing of Radix Astragali in this work. Radix Astragali from different origins will produce different fluorescence fingerprint spectra due to the difference of metal ions and content in combination with the probe. Excitation-emission matrix (EEM) fluorescence spectroscopy in conjunction with N-way partial least squares discriminant analysis (N-PLS-DA), and unfolded partial least squares discriminant analysis (U-PLS-DA) were used to identify the origin of 150 Radix Astragali samples from five geographical origins. The prediction results showed that the correct recognition rates of the U-PLS-DA model and N-PLS-DA model are 95.92% and 93.88%, respectively. In comparison, the results of U-PLS-DA are slightly better than those of N-PLS-DA. These findings indicate that EEM fluorescence spectroscopy based on weakly selective fluorescent probes combined with multi-way chemometrics provides a good idea for the origin tracing of traditional Chinese medicine.
研究领域:
中药学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Rao Fu,Peng Chen,Wenhao Dong,Jia Qiao,Yu Li,Mingxuan Li,Li Zeng,Chunqin Mao,Tulin Lu,Chenghao Fei
The evaluation of the herbal medicine quality often involves time-consuming and labor-intensive high-precision instrument testing. This study used Salvia miltiorrhiza as a case study, with 120 samples collected from various regions. Hyperspectral data, Fourier Transform Near-Infrared data, heavy metals and harmful elements data, and active ingredient data were systematically gathered. Using multivariate statistical analysis, multimodal information integration, and deep learning algorithms, a geographical origin tracing model was developed, achieving an accuracy rate of 100%. Additionally, spectral-ingredient prediction models for five heavy metals and harmful elements and four active components were established, allowing the heavy metals and harmful elements and active components of Salvia miltiorrhiza to be rapidly and accurately assessed. This study compared the performance of the hyperspectral and FT-NIR techniques in herbal medicine quality control. The results indicated that hyperspectral demonstrated broader applicability and superior performance in predicting heavy metals and harmful elements contents, whereas FT-NIR was more effective in analyzing chemical constituents. This research provides a scientific basis for Salvia miltiorrhiza origin tracing and quality prediction while also confirming the potential of multidimensional spectra techniques in the quality evaluation.
研究领域:
中药学
·
光谱学
·
数据分析
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2025
·
IF 4.6
Xia Hua,Chunling Yin,Leqian Hu,Liuchuang Zhao,Zhimin Liu,Peng Li
s Selective probes exclusively interact with a single metal ion species. In contrast, weakly selective probes can simultaneously coordinate with multiple metal ions, generating distinct fluorescence spectral signatures. This unique attribute enables them to provide more abundant chemical information. In this study, two weakly selective fluorescent probes of imidazole derivatives were designed and synthesized. We investigated the viability of utilizing a fluorescent array to trace the origin of Poria cocos based on the variations in fluorescence intensity and position of the distinctive fluorescence peaks created by their interaction with various metal ions. Subsequently, we collected three-dimensional fluorescence spectra of the interactions between the fluorescent array sensors and Poria cocos extracts from different geographical origins. These array data were analyzed using multi-way pattern recognition methods. The U-PLS-DA model exhibited excellent performance, with a prediction accuracy of 97.56 % that exceeded that of the N-PLS-DA model. This study demonstrates that the weakly selective probe array approach integrated with chemometric analysis provides a novel strategy for the traceability of non-fluorescent foods and traditional Chinese medicines.
研究领域:
分析化学
·
药物分析
·
中药学
·
化学计量学
·
荧光探针技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2020
·
IF 2.726
San-Tai Wang,Wei-Hui Fang,Shu-Hua Zhang
The coordination chemistry of the main group elements has always been attractive. Present herein is a stepwise assembly approach toward multidimensional Al–Pb based crystalline compounds. [Al 2 Pb 3 (L) 2 (HL) 2 (μ 3 −OH) 2 ]·2Hdma·2H 2 O·2Cl (AlOC-48) and [AlPb 2 (L) 2 (μ 3 −OH)]·3H 2 O (AlOC-49) (H 3 L = 2,3-dihydroxybenzoic acid, Cat = catechol and dma = dimethylamine) represent the first examples of multidimensional Al–Pb based compounds. They are assembled through [Al 4 (L) 4 (Cat) 2 ]] 4- (Al 4 , AlOC-13) polyanions and Pb ions. During the process of coordination assembly, metal site substitution occurs on the Al 4 precursors and transform into Al 2 Pb 2 unit. AlOC-48 and AlOC-49 are two-dimensional and three-dimensional frameworks based on Al 2 Pb 2 clusters. Moreover, the optical band gap and photocurrent response of these two compounds are studied.
研究领域:
无机化学
·
材料科学
✓ 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）