ADVANCED FUNCTIONAL MATERIALS
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2025
·
IF 19
Jianglei Zhang,Weijun Li,Yifan Yang,Zigao Tang,Haotong Wei,Junhu Zhang,Bai Yang
Given the promising application prospects of underwater X-ray detection technology, traditional perovskite materials, despite their outstanding performance in X-ray detection, are significantly constrained by their inherent susceptibility to hydrolysis, hindering their effective utilization in underwater environments. To date, most efforts are devoted to evaluating these materials' performance under atmospheric conditions, with a limited exploration into their adaptability in underwater settings. In this study, the successful fabrication of thick perovskite single-crystal arrays with a thickness of 400 µm and their integration into a stable underwater X-ray detector array is demonstrated. The single-crystal arrays exhibit remarkable uniformity in both alignment and dimensions, thereby contributing to improved detection homogeneity and enhanced underwater imaging capabilities. The detector arrays exhibit exceptional X-ray detection performance, characterized by a high sensitivity of 155,020 µC·Gy −1 ·cm −2 at 5 V bias and a low detection limit of 52 nGy·s −1 , which represents a significant advancement in the frontier of perovskite-based materials for underwater X-ray detection. After continuous submersion in water for over 60 days, the detector array maintains its initial X-ray detection performance, proving its stable adaptability to the underwater environment.
研究领域:
材料科学
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物理学
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医学影像
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产品关联
DOI
高影响因子
MACROMOLECULAR RESEARCH
·
2012
·Vol. 20
·期 6
·642-649
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IF 1.153
Liu Xin,Xu Kai,Liu Huan,Cai Hualun,Fu Zien,Guo Ying,Chen Mingcai
Four series of cross-linked polyurethanes with polyester polyols as soft segments were prepared by selfcuring of isocyanate-terminated polyurethanes. Polyester polyols herein were derived from different dimer fatty acids weight content, such as dicarboxylic acid leading to various hydrophobicity and steric hindrance. The structure of cross-linked polyurethane was characterized by Fourier transform infrared spectroscopy (FTIR). The surface properties and mechanical and thermal properties of cross-linked polyurethane were investigated using contact meter, tensile tester, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The results indicated that with increasing dimer fatty acid weight content from 0% to 100%, the cross-linked polyurethanes exhibited increased hydrophobicity (water contact angle increased from 91o to 96o), improved water resistance (water uptake decreased from 1.41% to 0.34%), toluene resistance (weight loss decreased from 33.2% to 22.7%), and hydrolytic resistance (weight loss decreased from 0.60% to 0.27%), enhanced mechanical properties (tensile strength increased from 1.3 to 4.8 MPa), and thermal stability (decomposition temperature of 50% weight loss increased from 425 to 462 °C).
研究领域:
高分子材料科学
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生物医学工程
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表面化学
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药物递送系统
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DOI
高影响因子
Sensors & Diagnostics
·
2022
·Vol. 2
·期 2
·382-389
·
IF 0
Rui Han,Wenjie Hou,Yang Li,Min Chen,Caifeng Ding,Xiliang Luo
Antigen testing is an effective methodology for COVID-19 disease screening, and the receptor-binding domain of the SARS-CoV-2 spike glycoprotein (RBD) is recognized as a key biomarker for the diagnosis, treatment, and vaccination of COVID-19. However, the diagnosis of RBD directly in human biofluids remains a serious challenge owing to severe biological fouling in real samples. Herein, a sensitive electrochemical biosensor capable of detecting the RBD antigen in human blood was constructed based on a self-designed cyclic peptide. This cyclic peptide was designed to have good antifouling properties to resist nonspecific adsorption of proteins, etc. in blood, and the cyclic structure of the peptide was able to resist enzymatic hydrolysis by certain enzymes in blood, enhancing the stability of the peptide as well as the peptide-based biosensor. Compared with conventional linear peptides, the cyclic peptide possessed better antifouling properties and a much stronger anti-enzymatic hydrolysis ability. The electrochemical biosensor based on the cyclic peptide was capable of sensitively assaying RBD in the concentration range from 1.0 pg mL−1 to 100.0 ng mL−1, with a limit of detection of just 0.45 pg mL−1. Moreover, the biosensor was able to quantitatively detect RBD in real samples, and the results were more reliable than those measured with ELISA kits, especially in human blood with higher concentrations. This strategy of designing cyclic peptides for the construction of antifouling biosensors offered a new method for clinical detection of viral antigens in complex biological media like human blood.
研究领域:
生物化学
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分析化学
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生物医学工程
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分子生物学
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DOI
JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Xiaowei Zhou,Yuchen Zhang,Guolong Huo,Zhiguang Zhang,Junhao Xin,Shuanyan Kang,Zhenggong Wang,Nanwen Li
Membrane based dehumidification technology has attracted wide attention. The anti-hydrolytic property of the membrane holds a significant role in its long-term operation in a wet environment. Herein, a series of fluorinated aromatic polyamides (FPA) are first proposed for stable air-dehumidification. Amide bond offers superior hydrolytic stability over chemical bond in the present dehumidification membrane. The deliberately introduced bulky fluorinated group (-CF 3 ) increases the water permeability and enhances the anti-hydrolytic property of the FPA membranes. The membrane separation performance and membrane stability are further tuned by adjusting the molar ratio of para- and meta-amide groups to optimize the intermolecular forces and polymer chain arrangement, which is verified by the refractive index data and wide-angle X-ray diffraction results. The obtained co-FPA membranes exhibit tunable gas and water vapor permeation properties. With increasing para-amide group content, the gas and water vapor permeability of copolyamides gradually decreases and the selectivity of H 2 O/N 2 increases. Meanwhile, the hydrolytic stability of the co-FPA membranes increases with the increase of TPC content as verified by 1 H NMR, GPC , and mechanical property tests. Among these co-FPA membranes, the co-FPA-70 membrane exhibits the most excellent hydrolytic stability. The membrane shows almost no change in 1 H NMR spectra and 97% retention of tensile strength after 5000 h of hydrolysis reaction. In the meanwhile, it shows excellent separation stability with a water vapor permeability retention of 74% during long-term hydrolysis aging operation. This study demonstrates the great potential of polyamide for the fabrication of dehumidification membranes with high hydrolysis resistance.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Yuanming Liu,Yao Tian,Feiyu Kang,Marnix Wagemaker,Baohua Li,Guohua Chen
The instability of P─F bond-based electrolyte (PFE) under ambient conditions presents one of the biggest challenges for the production, usage, and recycling of lithium (Li) batteries. It increases the cost of battery production, decreases battery service life, and harms human health and environmental sustainability during the use of batteries. Here a stabilized P─F bond electrolyte (SPFE) is reported, which can effectively prevent the side-reactions in PFE at ambient conditions. The SPFE, which is pristine, containing ultra-high content of water (10 000 ppm or 10 g L −1 ), can support the 2 Ah Li-ion pouch cell (200 Wh kg −1 ) cycling 400 times with 90.2% of its capacity retained. The mostly dry room-free (DRF) production of commercial Li-ion (2Ah, 200 Wh kg −1 ) and anode-free (AF) Li metal pouch cell (2 Ah, 410 Wh kg −1 ) also demonstrated excellent cycling stability with the SPFE. Moreover, the SPFE enables AF Li-metal batteries (AFLMBs) to retain 54.1% of their charged capacity even after 180 days of open circuit storage. By intrinsically safeguarding PFE from hydrolysis, the present SPFE would have a broad impact on future battery technology, simplifying battery production, extending battery service life, and safeguarding battery recyclability.
研究领域:
储能
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材料科学
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电化学
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电池技术
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可持续技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Shuai Sun,Lipeng Wang,Pingan Song,Liping Ding,Yongping Bai
Phosphite antioxidants are extensively used in polyester industry due to extraordinary antioxidative and chromaticity protection capabilities. Unfortunately, they are highly susceptible to hydrolysis leading to reduced antioxidative activity, which remains unsatisfactorily addressed so far. In this work, we have demonstrated the fabrication of hydrolysis resistant hybridized phosphite antioxidants (PSLDH) by physically melt-blending with layered double hydroxides (LDH) based on the hydrolysis mechanism. X-ray diffraction measurements indicate that basically phosphite antioxidants are physically hybridized with the LDH. Accelerated hydrolysis results show that as-fabricated hybridized phosphite antioxidants show much superior anti-hydrolysis capability to the unmodified counterpart because the basic LDH can neutralize the phosphoric acid created during hydrolysis, thus effectively prohibiting the self-catalytic effect. High performance optical poly(ethylene terephthalate) (PET) materials are then synthesized by in situ adding PSLDH in the polycondensation process. Only adding 0.05 wt% of the PSLDH containing 10 wt% of LDH can remarkably improve the anti-oxidative and chromaticity performances of the resultant PET. This work provides an innovative methodology for developing high-performance value-added chemical additives via facile physical hybridization.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
ACS Sensors
·
2024
·
IF 8.2
Mingjun Shi,Yang Li,Wenqing Wang,Rui Han,Xiliang Luo
Overcoming the influence of interfering substances in the environment and achieving superior sensing performance are significant challenges in biomarker detection within complex matrices. Herein, an integrated electrochemical sensing platform for sensitive detection of biomarkers in complex biofluids was developed based on a newly designed PEGylated multifunctional peptide (PEG-MPEP). The designed PEG-MPEP contains a poly(serine) sequence (−ssssss−) as the antifouling part and recognition peptide sequence (−avwgrwh) specific for the target human immunoglobulin G (IgG). To improve the peptide stability to protease hydrolysis, d-amino acids were adopted to synthesize the whole peptide. Additionally, the PEGylation can further enhance the stability of the peptide, and the PEG itself was also antifouling, ensuring superstrong antifouling capability of the PEG-MPEP. The designed PEG-MPEP-based biosensor possessed a high sensitivity for the detection of IgG in the range of 1.0 pg mL−1 to 1.0 μg mL−1, with a low limit of detection (0.41 pg mL−1), and it was capable of assaying targets accurately in real serum samples. Compared with conventional peptide-modified biosensors, the PEG-MPEP-modified biosensor exhibited superior antifouling and antihydrolysis properties in complex biofluid, showcasing promising potential for practical assay applications.
研究领域:
生物传感
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分析化学
·
生物化学
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分子生物学
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材料科学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Baozhu Zhao,Haowen Yang,Jin Mao,Qi Zhou,Qianchun Deng,Lei Zheng,Jie Shi
The creation of a new metal–organic framework (MOF) with a hollow hierarchical porous structure has gained significant attention in the realm of enzyme immobilization. The present work employed a novel, facile, and effective combinatorial technique to synthesize modified MOF (N-PVP/HZIF-8) with a hierarchically porous core–shell structure, allowing for the preservation of the structural integrity of the encapsulated enzyme molecules. Scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, confocal laser scanning microscopy, and other characterization tools were used to fully explore the changes of morphological structure and surface properties in different stages of the preparation of immobilization enzyme CRL-N-PVP/HZIF-8, thus showing the superiority of N-PVP/HZIF-8 as an enzyme immobilization platform and the logic of the immobilization process on the carrier. Additionally, the maximum enzyme loading was 216.3 mg mL–1, the relative activity of CRL-N-PVP/HZIF-8 increased by 15 times compared with the CRL@ZIF-8 immobilized in situ, and exhibited quite good thermal, chemical, and operational stability. With a maximal conversion of 88.8%, CRL-N-PVP/HZIF-8 demonstrated good catalytic performance in the biosynthesis of phytosterol esters as a proof of concept. It is anticipated that this work will offer fresh concepts from several perspectives for the creation of MOF-based immobilized enzymes for biotechnological uses.
研究领域:
材料科学
·
生物化学
·
生物技术
·
催化
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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）