Materials Horizons
·
2025
·
IF 10.7
Siyang Li,Tow-Jie Lok,Shi-Han Ngo,Yaoting Xue,Zhikun Miao,Tao Feng,Lei Wang,Jie-Wei Wong,Jiatee Low,Kai-Yi Lim,Min-Rou Woon,Axel T. Neffe,Tuck-Whye Wong,Tiefeng Li,Xuxu Yang,Wei Yang
Crosslinked functional polymers exhibit exceptional mechanical and chemical properties critical for applications spanning biomedical engineering, advanced adhesives, and self-healing materials. However, challenges in recycling, either due to irreversible crosslinks or, in the case of covalent adaptable networks (CANs), limited solid-state plasticity that typically requires catalysts, significantly restrict sustainability. To address these limitations, we present a novel water-mediated polymerization strategy inspired by the radical-generating mechanism of the Maillard reaction, utilizing maltose as both an initiator and a functional side group in a simple, catalyst-free, aqueous reaction with acrylamide (AAm). This mild, one-pot reaction occurs below 100 °C, forming adaptively functionalized supramolecular networks (AFSNs) that form supramolecular networks through hydrogen bonding and display dynamic imine linkages to the maltose side chains supporting self-healing and re-shaping. These elastomers are characterized by impressive mechanical strength (up to 5 MPa tensile strength), high elongation (up to 1000%), notable fracture energy (36 kJ m−2), robust adhesive performance (up to 4.8 MPa), and rapid self-healing capability at room temperature. Crucially, the elastomer's supramolecular network can be fully and repeatedly dissolved and reprocessed using only water, preserving mechanical integrity without chemical degradation. This sustainable approach provides a practical solution for synthesizing and recycling high-performance crosslinked materials while eliminating environmental hazards, guiding the future development of green polymer chemistry and functional material design.
研究领域:
高分子化学
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材料科学
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生物医学工程
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绿色化学
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功能材料
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自修复材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROPHORESIS
·
2025
·
IF 2.5
Zedong Huang,Haoran Wang,Wenfeng He,Shulei Qin,Yuxuan Chen,Shanshan Cai,Jun Luo,Miaoduo Deng
A novel post-modification strategy was developed for rapid functionalization of monoliths through amino-yne click chemistry. This approach enabled the conjugation of activated alkynes onto amino-functionalized organic-silica hybrid monolith surfaces under mild, catalyst-free conditions. Systematic investigation of critical reaction parameters was conducted to optimize the post-modification process. The morphological and structural characteristics of the prepared monolith were characterized by scanning electron microscopy (SEM) and nitrogen adsorption measurements. The successful grafting of functional groups onto the monolith surface was confirmed by contact angle analysis, Fourier transform infrared (FT-IR) spectroscopy, and x-ray photoelectron spectroscopy (XPS). The functionalized monolith demonstrated chromatographic selectivity for diverse analytes, including phenolic compounds and some weakly polar/nonpolar compounds (benzoin/benzoin methyl ether, styrene/ p -chlorostyrene, and 1-naphthylethylamine/naphthalene). Furthermore, it was successfully applied to the quantitative analysis of honokiol in authentic magnolol samples, showcasing its potential for practical analytical applications.
研究领域:
分析化学
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分离科学
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材料化学
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点击化学
·
色谱学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2024
·
IF 3.8
Heping Jiao,Ruixiang Bi,Fangli Li,Jingbo Chao,Guimin Zhang,Lihai Zhai,Ligang Hu,Zhenhua Wang,Caifeng Dai,Bing Li
The complex and cumbersome preparation of magnetic covalent organic frameworks (COFs) nanocomposites on a small scale limits their application. Herein, a rapid and easy route was employed for the preparation of magnetic thiourea-based COFs nanocomposites. COFs were coated on Fe 3 O 4 nanoparticles at room temperature without a catalyst within approximately 30 min. This method is suitable for the large-scale preparation of magnetic adsorbent. Using the as-prepared magnetic adsorbent (Fe 3 O 4 @COF-TpTU), we developed a simple, efficient, and sensitive magnetic solid-phase extraction-high performance liquid chromatography-inductively coupled plasma-mass spectrometry (MSPE-HPLC-ICP-MS) for the enrichment and determination of mercury species, including Hg 2+ , methylmercury (MeHg), and ethylmercury (EtHg). The effects of the experimental parameters on the extraction efficiency, including solution pH, adsorption and desorption time, composition and volume of the elution solvent, salinity, coexisting ions, and dissolved organic matter, were comprehensively investigated. Under optimised conditions, the limits of detection in the developed method were 0.56, 0.34, and 0.47 ng L −1 with enrichment factors of 190, 195, and 180-fold for Hg 2+ , MeHg, and EtHg, respectively. The satisfactory spiked recoveries (97.0–103%) in real water samples and high consistency between the certified and determined values in a certified reference material demonstrate the high accuracy and reproducibility of the developed method. The as-proposed method with simple operation, high sensitivity, and excellent anti-matrix interference performance was successfully applied to the enrichment and determination of trace levels of mercury species in the natural samples with complicated matrices, such as underground water, surface water, seawater and biological samples.
研究领域:
分析化学
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环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 32
·18959-18970
·
IF 10.733
Qiaobo Liao,Can Ke,Xin Huang,Guiyang Zhang,Qi Zhang,Zewei Zhang,Yiying Zhang,Yunzhong Liu,Fangyi Ning,Kai Xi
Conventional synthesis methods for imine-linked covalent organic frameworks (COFs) usually require long reaction times, tedious synthetic procedures, and indispensable catalysts, restraining the further implementation of COFs. To tackle these obstacles, we report the first catalyst-free and highly efficient fabrication method for two imine-linked COFs by virtue of rationally designed building blocks. The compound 2,3,5,6-tetrafluoroterephthalaldehyde (TFTA) was shown to be an active aldehyde monomer for accelerating the reaction and improving the crystallinity as well as the porosity. Remarkably, highly crystalline fluorinated SCF-FCOF-1 with a surface area exceeding 1000 m2 g−1 was formed within 1 hour, and COFs with surface areas as high as 2056 m2 g−1 were obtained after 3 days, representing the highest BET surface area for a fluorinated porous organic material. Moreover, the resultant fluorinated SCF-FCOF-1 exhibited excellent selective sorption performance and good recyclability toward positively charged organic molecules, presumably due to the high surface area, crystallinity, hydrophobicity and electrostatic attraction between the fluorine atoms and guest molecules.
研究领域:
材料科学
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化学工程
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纳米技术
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吸附科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2019
·
IF 4.309
Guanyun Zhang,Chenxiao Chu,Jian Yang,Chen-Ho Tung,Yifeng Wang
By aerobic calcination of a new titanium-oxide cluster (TOC) isolated from water, that is, [Ti6O8(OH2)20]·(2,7-NDS)4·2HCl·14H2O (Ti6-NDS; 2,7-NDS = 2,7-naphthalenedisulfonate), porous anatase TiO2 was facially prepared. The sample obtained at 400 °C exhibited a surface area of 108 cm3 g–1 and an average pore diameter of 16 nm. When used as an anode material for a sodium-ion battery (SIB), it showed larger specific capacity and far superior rate performance than the other TiO2 samples, including those prepared from another three TOCs under the same conditions or from Ti6-NDS under different conditions and the one obtained from a commercial source. The mechanistic study indicates that the hierarchical structure surrounding the Ti-oxide cores of Ti6-NDS is pivotal for the formation and the SIB performance of the porous TiO2. This surfactant-free and catalyst-free strategy for the fabrication of TiO2 materials with special morphologies by thermal transformation of a TOC provides a new optional protocol for the preparation of promising materials stable and efficient in SIBs.
研究领域:
材料科学
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能源存储
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纳米技术
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化学
✓ 已验证
DOI
高影响因子
Nanoscale
·
2019
·Vol. 11
·期 26
·12537-12546
·
IF 6.97
Jiguo Tu,Junxiang Wang,Shijie Li,Wei-Li Song,Mingyong Wang,Hongmin Zhu,Shuqiang Jiao
Highly efficient strategies for the transformation of amorphous carbon into graphite with high graphitization and crystallinity features have been significantly pursued in recent years; however, critical issues, including high processing temperature, insufficient graphitization, introduction of catalyst impurities, complicated post-purification procedures, and generation of greenhouse gas, still remain in traditional approaches. For significantly addressing these challenges, herein, a highly efficient catalyst-free, eco-friendly and low-temperature electrochemical transformation strategy was proposed for the preparation of highly graphitized porous graphite nanoflakes. Using inert SnO2 as an anode in CaCl2-LiCl molten salts, the graphitization transformation of amorphous carbon materials could be realized at 700 °C, approaching the record in high-efficiency converting amorphous carbon to graphite; moreover, systematical analysis was performed to understand the electrochemical transformation of amorphous carbon into highly graphitized graphite nanoflakes. For extending their valuable applications, the as-prepared graphite nanoflakes were further utilized as cathodes in aluminum-ion batteries, which exhibited significantly promising energy storage performance; moreover, an initial discharge capacity of 63.6 mA h g−1 at a current density of 200 mA g−1 was achieved, which eventually became 55.5 mA h g−1 with a coulombic efficiency of 95.4% after 1000 cycles; thus, these cathodes exhibited stable long-term cycling performance. The combination of low-temperature electrochemical transformation and the subsequent high-performance applications of these nanoflakes in energy storage indicates that the proposed strategy is highly efficient for the transformation and utilization of abundant amorphous carbon resources for the realization of high value-added applications.
研究领域:
材料科学
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电化学
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能量存储
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
GREEN CHEMISTRY
·
2019
·Vol. 22
·期 2
·532-539
·
IF 9.405
Qixuan Lin,Shouwei Liao,Libo Li,Weiying Li,Fengxia Yue,Feng Peng,Junli Ren
In this study, experiments and molecular dynamics simulations were combined to get insights into the role of solvent during the process of xylose conversion under catalyst-free conditions. Solvents used for furfural production were comparatively discussed, including traditional and emerging biomass-derived solvents – water, dimethyl sulfoxide (DMSO), dimethyl formamide (DMF), isopropanol (ISO), γ-butyrolactone (GBL) and γ-valerolactone (GVL). The degradation behavior of solvents, the solubility and α/β ratio of xylose, the distribution of the solvent around xylose/furfural and the hydrogen bonding between them were also studied. The results showed that in pure solvents, the different hydrogen bonding between xylose and the solvent resulted in different products. Water was a favourable solvent for xylose to form furfural among these pure solvents because less formic acid was produced from xylose in water under catalyst-free conditions. Furfural could be produced in mixed solvents if there was more water around xylose, which was similar to the case in pure water. Otherwise, the situation in mixed solvents was similar to that in the corresponding pure organic solvents. GBL and GVL, as green solvents, had weaker affinities with xylose than DMSO, DMF and ISO, but were intensively attracted by furfural, thus they could provide protective shells for furfural, which played a positive role during the production of furfural. The highest furfural yield of 46.4% was achieved in GBL–H2O at 180 °C – 150 min in the absence of catalysts.
研究领域:
化学工程
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生物质转化
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分子动力学模拟
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绿色化学
✓ 已验证
DOI
高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2023
·Vol. 224
·期 8
·2200451
·
IF 2.5
Xin Guo,Xinxin Fang,Songhong Fan,Junfei Gao,Qun Gu
The highly reactive erythritol dicarbonate (EDC) allows facile design and preparation of solvent- and catalyst-free epoxyurethane polymers. Diglycidyl ether of bisphenol-A (DGEBA) and oligo polyhydroxyurethanes are used to produce epoxyurethane polymers (o-PHUs). The o-PHUs are prepared using cyclic carbonates derived from erythritol and various diamines (aliphatic amine and polyether amine) or polyamines (diethylene triamine (DETA) and triethylne tetramine (TETA)). Active secondary amino groups derived from o-PHUs polyamines form hydrogen bonds between urethane carbonyls in epoxy hybrid networks with the highest cross-linking density (1293 mol m −3 ), glass transition temperature T g (93 °C), and ultimate tensile strength (34 MPa). And the ether bond provides a significant potential for hydrogen bonding between hydroxyl group and ether oxygen, forming strong hydrogen bond cross-linking between molecular chains, with cross-linking density and ultimate tensile strength comparable to polyepoxyurethane derived from polyamines, except for a lower T g (27 °C). In addition, these polyepoxyurethanes have superior adhesion to wood, aluminum alloy, and polymethyl methacrylate (PMMA) substrates. This versatile oligo PHUs would provide a wide range of fabrication options for adhesive epoxyurethane polymers.
研究领域:
高分子科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Science China-Chemistry
·
2020
·Vol. 63
·期 8
·1100-1111
·
IF 6.356
Rong Yan,Zhang Zhen,He Chaoliang,Chen Xuesi
Cell-material and cell-cell interactions represent two crucial aspects of the regulation of cell behavior. In the present study, poly (L-glutamic acid) (PLG) hydrogels were prepared by catalyst-free click crosslinking via a strain-promoted azide-alkyne cycloaddition (SPAAC) reaction between azido-grafted PLG (PLG-N 3 ) and azadibenzocyclooctyne-grafted PLG (PLG-ADIBO). The bioactive peptides c(RGDfK) and N-cadherin mimetic peptide (N-Cad) were both conjugated to the PLG hydrogel (denoted PLG+RGD/N-Cad) in order to regulate cell-material and cell-cell interactions. Gelation time and storage modulus of the hydrogels were tunable through variations in the concentration of polypeptide precursors. The hydrogels degraded gradually in the presence of proteinases. The viability of bone marrow mesenchymal stem cells (BMSCs) was maintained when cultured with extracts of the hydrogels or encapsulated within the hydrogels. Degradation was observed within 10 weeks following the subcutaneous injection of hydrogel solution in rats, displaying excellent histocompatibility in vivo . The introduction of RGD into the PLG hydrogel promoted the adhesion of BMSCs onto the hydrogels. Moreover, when encapsulated within the PLG+RGD/N-Cad hydrogel, BMSCs secreted cartilage-specific matrix, in addition to chondrogenic gene and protein expression being significantly enhanced in comparison with BMSCs encapsulated in hydrogels without N-Cad modification. These findings suggest that these biodegradable, bioactive polypeptide hydrogels have great potential for use in 3D cell culture and in cartilage tissue engineering.
研究领域:
生物材料
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干细胞生物学
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组织工程
✓ 已验证
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2022
·Vol. 414
·期 21
·6393-6402
·
IF 4.478
Guo Zhi-Yong,Yao Qiu-Hong,Zheng Wen-Hui,Jiao Rui-wen,Zhang Chen,Zhang Li,Ye Ting-Xiu,Chen Xi
New approaches for the engineering of well-defined, pore modality, and multi-chemical functionality nanocomposites are crucial to generate the next generation of functional materials with recoverable and easy preparation properties. Here, a catalyst and heat free polymerization reaction is exploited and fabricated zwitterionic system around magnetic nanoparticles. N-aminoethyl piperazine propane sulfonate (AEPPS) and dopamine (DA) are introduced as the zwitterionic system, which provided abundant zwitterionic groups (NH 2 , SO 3 − , N + ) and strong adhesion and various oxidation state properties. And that, the zwitterionic engineering will assemble between AEPPS and DA whereby Schiff base formation or Michael type addition. Whereafter, a series of sophisticated array of microscopic, spectroscopic, and structure techniques verify the formation of highly crosslinking internal zwitterionic architectures, well-defined core–shell structure, and better porosity. The zwitterionic structure–function relationships and striking porous structure are explored in a multi-interaction adsorption assay. The adsorption capacity of the magnetic nanocomposites was 1065.8 mg/g. And that, the system exhibited with hydrophilic-hydrophobic activity towards glycoprotein and better performance to bioactive protein (Ig-G) isolation form human whole blood sample. The synergistic enhancement interaction in hydrophilic target enrichment, easy preparation, and soft substrate properties of the AEPPS-DA zwitterionic materials make them intriguing candidates for sustainable biomedical loading and chromatographic separation.
研究领域:
材料科学
·
纳米技术
·
生物医学工程
·
分析化学
✓ 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）