CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jiujing Xu,Xueyu Wang,Cheng Chen,Rukang Jiang,Boya Wang,Bisheng Li,Leihong Zhao,Liguo Shen,Hongjun Lin,Banglin Chen
Ultraselective thin-film nanocomposite (TFN) nanofiltration membranes require precise control over interfacial compatibility to overcome defects and nonselective voids induced by nanofillers agglomeration. Here, we report a hydrogen-bonded organic framework (HOF)-based TFN membrane engineered via controlled interfacial polymerization. Leveraging the superhydrophilicity, abundant hydrogen bonding sites, and exceptional compatibility of HOF nanorods with the polyamide matrix, the resulting HOF-TFN membrane maintains nanoporosity while exhibiting enhanced surface hydrophilicity and negative charge, without altering pore size. Consequently, the HOF-TFN membrane demonstrated satisfied rejection rates towards typical hazardous endocrine-disrupting compounds (EDCs), notably achieving 97.1 % rejection for bisphenol A (BPA) and 97.0 % rejection for sodium 2-biphenylate (SOPP), with enhanced water permeability (10.8 L m −2 h −1 bar −1 ). Experimental data and molecular simulations demonstrate that integrating HOF preserves membrane nanoporosity while finely tuning interfacial affinities with water and pollutants—unlocking synergistic control over molecular sieving, electrostatic repulsion, and water transport. Our work establishes a rational design strategy of next-generation TFN membranes for ultraselective organic micropollutant removal.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Yukun Yang,Xiaoyi Zhang,Xiaomin Wang,Xu Jing,Ligang Yu,Baoqing Bai,Tao Bo,Jinhua Zhang,Hailong Qian,Ying Gu
As an emerging porous material, hydrogen-bonded organic framework materials (HOFs) still pose application challenges. In this work, the designed type “I + II” heterojunction extracted hot electrons from HOFs using quantum dots (QDs) and polypyrrole (Ppy), improving the stability and photoelectrochemical performance of materials. In addition to serving as a potential well, electropolymerized Ppy was used as a recognition element for bisphenol A (BPA), and a novel self-powered molecularly imprinted photoelectrochemical (MIP–PEC) sensor was designed. The sensing platform showed a linear relationship from 1 × 10 −10 to 1 × 10 −7 mol∙L −1 and from 1 × 10 −7 to 1 mol∙L −1 with an acceptable detection limit of 4.2 × 10 −11 mol∙L −1 . This is the first application of HOFs in constructing MIP–PEC sensors and a new attempt to improve the stability of HOFs for the application of porous crystal materials in the sensing field.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Ming Zeng,Haoyu Luo,Zijian Feng,Nannan He,Chenxuanzhi Tang,Jiangbing Chen,Danli Zeng,Yang Zhou,Yufang Shen
The main-chain benzoxazine copolymers (MCBCs) based on bisphenols, diamines, and capping monophenols have been increasingly explored in the field of high-frequency communication. However, the optimization of chemical structures and high-frequency low dielectric properties has still not been investigated. Herein, the key to structural design is incorporating low polar and bulky groups into monophenols, enlarging the chain lengths of aliphatic diamines, and introducing bulky bridging groups into bisphenols to decrease the oxazine ring concentrations of oligomers. The strategy is effective to decrease the oriental polarization, leading to the reduction of the dielectric constants (k) and dissipation factor (f) values of MCBCs. Besides, both the k and f values of MCBCs can be regulated by polymerization conditions owing to the strong hydrogen bonding formed during polymerization, which is also beneficial to reduce the oriental polarization. In view of the synergistic effect of the optimized chemical structure and polymerization conditions, the fabricated MCBCs show excellent dielectric properties (k < 2.4, f < 0.005) at 10 GHz. Therefore, the optimization strategies for both structural design and polymerization conditions are favorable to obtain high-frequency low dielectric benzoxazine resins, which possibly could be extended to other low dielectric resins.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Haoran Liu,Chenghao Wang,Lishuai Zong,Lingmei Jiang,Guangsheng Zhang,Zichun Ding,Zexian Jia,Changhong Xiao,Chao Li,Jinyan Wang,Xigao Jian
Currently, drop-on-demand (DOD) inkjet-printed dielectric inks used to produce next-generation high-frequency electronic devices fail to meet the requirements of circuit board substrates in terms of thermal, mechanical, and dielectric properties. To address this gap, we synthesized a low-viscosity acrylate monomer featuring an intrinsically low dielectric structure (hexafluorobisphenol A) and multiple cross-linking sites, and a benzocyclobutene monomer with low curing shrinkage and excellent thermomechanical properties. By mixing these monomers with other reactive diluents and verifying them through theoretical calculations and printing, we have developed a range of dielectric inks suitable for inkjet 3D printing. To enhance the overall performance of the cured inks, a sequential UV/thermal curing strategy was employed to form interpenetrating networks (IPNs). The optimal ink formulations met the requirements of circuit board substrates, demonstrating excellent heat resistance (T d5% = 334 °C, T g = 181 °C), mechanical properties (tensile strength = 85 MPa, elongation at break = 13.5 %), and dielectric properties (D k = 2.526 and D f = 0.113 at 15 GHz). These formulations meet the performance requirements for circuit board substrates and lead the industry in mechanical and dielectric properties. Furthermore, the feasibility of inkjet printing heterogeneous integrated electronic devices was verified, showing excellent print resolution and continuity of the conductive network. This work provides new insights into the future development of dielectric materials for inkjet 3D printing.
✓ 已验证
产品关联
DOI
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2024
·
IF 6.2
Fengxia Chang,Jinhang Chen,Jiong Tan,Zixian Pu,Dan Wang
A new and highly sensitive voltammetric technique was described in this study for the concurrent detection of endocrine disruptors bisphenol A (BPA) and bisphenol AF (BPAF) based on carbon nanocages (CNCs) and copper oxide nanochains (CuONCs). The CNCs was prepared by the solvothermal method and characterized using various techniques. Utilizing the nanocomposite of CNCs and CuONCs, the voltammetric sensor demonstrated outstanding performance in detecting BPA and BPAF simultaneously with distinct oxidation peaks and increased current peaks. The voltammetric signals have linear relationships with the two bisphenols ranging from 0.500 μM to 100 μM with a detection limit of 0.16 µM for BPA and 0.14 µM for BPAF. The newly designed sensor showed reliable consistency, long-term durability and anti-interference ability, and performed well in analyzing real water samples, indicating great potential for environmental monitoring.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials
·
2025
·Vol. 18
·期 18
·4279
·
IF 3.2
Cong Peng,Yuhang Liu,Duo Chen,Zhanjun Wu
To impart high flame resistance, enhanced thermal stability, and low dielectric properties to epoxy resin while maintaining good mechanical behaviors for high-end applications, a monomer (BZPN) containing the characteristic structure of benzoxazine, phthalonitrile, and trifluoromethyl was prepared and added into the Bisphenol A-type epoxy resin (DGEBA)/Dapsone (DDS) combination. The glass transition temperature (T g ) and carbon yield under a nitrogen atmosphere at 800 °C were found to significantly increase from 155 °C, 17.2% to 236 °C, 50.3%, respectively, for the neat EP/DDS and the BZPN-containing material. The UL-94 flammability rating achieved V-0 level when the BZPN content was 19.2 wt.% (EP-BZ-1). The thermal decomposition and flame retardancy mechanism were explored by TGA-FTIR, Raman, and XPS analysis. The fluorine-containing products were found in both the gas phase and the char residue, implying that the •CF 3 radicals played an important role in promoting the flame-retardant behaviors through a radical trapping mechanism. The dielectric constant and dielectric loss of the materials decreased as anticipated. In addition, mechanical testing of carbon fiber-reinforced composites showed that the BZPN-containing resin presented equivalent mechanical behaviors to the neat EP/DDS resin. The synthesized BZPN was proved to be an effective and promising additive for the epoxy-based composite.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
·
IF 4.6
AnYuan Tong,Nan Xu,Ting Yan,FuBin Chen,ChunYan Yang
Herein, silica nanoparticles were employed as the carrier for surface molecular imprinted polymer with high selectivity for Tetrabromobisphenol A (TBBPA). Nitrogen-doped graphene quantum dots (NGQDs) were incorporated to enhance the chemiluminescence intensity of the Luminol-H 2 O 2 system, as TBBPA was found to effectively suppress the chemiluminescence signal of this system. Based on these principles, a molecular imprinting technique-chemiluminescence (MIT-CL) sensor was developed by integrating the NGQDs-sensitized Luminol-H 2 O 2 chemiluminescence system with the specific recognition material SiO 2 @TBBPA MIP was constructed to detect TBBPA in environmental water samples. Under the optimal conditions, the sensor exhibited a linear detection range of 8.0 × 10 −10 -2.0 × 10 −8 mol/L, with the detection limit (3σ/k) of 3.2 × 10 −11 mol/L. The illustrated MIT-CL method was utilized for the detection of TBBPA in water samples, yielding satisfactory recovery rates ranging from 96.25 % to 107.50 %.
✓ 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）