JOURNAL OF MOLECULAR LIQUIDS
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2021
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IF 6.165
Binbin Zhang,Qi Zhou,Xinwei Zhang,Jiao Ma,Xin Cong,Qin Wang,Yonggui Liao,Yajiang Yang,Hong Wang
In this work, 5,5′,5′′-(1,3,5-triazine-2,4,6-triyl)tris(azanediyl)triisophthalate (H 6 L) was used as a gelator to prepare thermostable supramolecular gels (H 6 L gels). The lowest critical gelation concentration of H 6 L was found to be only 0.14 wt%. H 6 L gels remained stable after being placed at 85 °C for 1 h, indicating that its gel-sol phase transition temperature ( T gel ) was not<85 °C. H 6 L gels can be formed in just a few seconds in comparison with the longer gelation time of a conventional thermostable gel. Moreover, a thermostable H 6 L/Fe 3+ gel was also prepared by the coordination interactions of H 6 L and Fe 3+ ions. The studies of FT-IR, UV–vis, XRD and SEM reveal that multiple hydrogen bonds, π-π interactions as well as coordination interactions were the main driving forces for the formation of thermostable three-dimensional network structure of H 6 L gels. In addition, the fluorescence spectra of H 6 L gels showed that the dual emission at 396 nm and 469 nm was derived from the structure of melamine and 5-aminoisophthalic acid contained in H 6 L structure. The gel formed at high temperature had relatively high transparency and strong fluorescence signal, and the fluorescence intensity is affected by the external H + concentration. Using this characteristic, 14 organic acids can be effectively identified with the help of principal component analysis (PCA). L-cysteine can be identified with the naked eye by the color and state changes of H 6 L/Fe 3+ gels.
研究领域:
材料科学
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化学
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分析化学
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超分子化学
✓ 已验证
产品关联
DOI
高影响因子
Bioactive Materials
·
2025
·
IF 20.3
Meng Zhang,Wanting Hao,Zi Fu,Ying Huang,Fuhua Yan,Dalong Ni
Supramolecular hydrogels have emerged as a transformative strategy for burn wound management due to their dynamic adaptability and bio-interfacial responses. Herein, a self-assembled magnesium peroxide (MPO) supramolecular hydrogel was engineered as a first-aid intervention for oxidant-induced chemical burns. Unlike conventional approaches that mechanically entrap pre-synthesized MPO nanoparticles within hydrogel matrices, the designed hydrogel system utilized metastable MPO species generated in situ during the one-pot synthesis to form a crosslinker-free network through hydrogen bonding and Mg 2+ coordination. The MPO species dynamically assembled into the hydrogel matrix by serving as structural nodes, while the tailored linkers dictated mechanical robustness. The hydrogel exhibited superior efficacy to effectively neutralize residual oxidants by chemical burn (e.g., NaClO), while sustained oxygen release and Mg 2+ supply from MPO synergistically established a regenerative microenvironment to accelerate angiogenesis and epithelialization. As validated on a murine NaClO-induced chemical burn model, the developed hydrogel achieved excellent oxidant clearance and reduced wound area compared to controls, demonstrating its efficacy as an emergency treatment. This work pioneers a novel hydrogel architecture integrating active MPO species, offering a blueprint for designing oxygen-supplying biomaterials as next-generation therapeutic hydrogels in emergency trauma care.
研究领域:
生物材料
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急诊医学
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伤口护理
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超分子化学
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创伤治疗
✓ 已验证
产品关联
DOI
PubMed
高影响因子
EUROPEAN POLYMER JOURNAL
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2013
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IF 2.562
Wengui Weng,Xiuli Fang,Huan Zhang,Huiying Peng,Yangju Lin,Yinjun Chen
Macromonomers bearing tridentate 2,6-bis(1,2,3-trizol-4-yl)pyridine (BTP) ligand unit synthesized via CuAAC “click” chemistry in the middle of the chain and two ureidopyrimidinone (UPy) motifs on the ends linked to the central BTP unit via PEGs of various lengths were synthesized and used for the study of gelation both with and without the presence of Eu(III) ions. Various interesting gelation behaviors were found. Gels exhibited various multi-responsive properties, including photoluminescence, mechanoresponsive properties, self-healing abilities, thermorepsonsive properties and chemoresponsive properties. The different gelation abilities and multi-responsive properties for different systems were shown to be resulted from difference in PEG linker lengths and the introduction of orthogonal metal–ligand coordination and hydrogen bonding interactions. The selective responsiveness to different chemicals would allow the development of modular sensory systems that utilize a combination of orthogonal supramolecular interactions.
研究领域:
超分子化学
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材料科学
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高分子化学
✓ 已验证
DOI
高影响因子
LANGMUIR
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2019
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IF 3.683
Qi Zhou,Xuelin Dong,Jianhui Yuan,Binbin Zhang,Shan Lu,Qin Wang,Yonggui Liao,Yajiang Yang,Hong Wang
The development of reversible redox supramolecular gels capable of concurrent luminescence switch and visible color change with the facile redox process has always been an intriguing challenge. A redox-responsive supramolecular lanthanide metallogel with strong luminescence and yellow color is obtained via coordination interaction between 3,5-dinitrosalicylic acid (DNSA) and europium (Eu3+). Upon the addition of TiO2 to the prepared gel (DNSA/Eu3+ gel), the oxidation process of the gel (DNSA/Eu3+/TiO2 gel) can be easily achieved by UV irradiation. The DNSA/Eu3+/TiO2 gel exhibits a concurrent reversible “on–off” luminescence and color change in response to redox stimuli. The DNSA/Eu3+/TiO2 gel shows a concurrent quench of luminescence and a color change from yellow to red when the gel was stimulated by the reductant. Upon UV irradiation, the luminescence and color of the reduced DNSA/Eu3+/TiO2 gel restored to its initial state due to the strong oxidation ability of hydroxyl radicals derived from photocatalytic oxidation of TiO2. The results of UV–vis and mass spectroscopy indicated that the reversible redox responsiveness of DNSA/Eu3+/TiO2 gel depends on the reversible oxidation–reduction reactions of DNSA. Moreover, DNSA/Eu3+/TiO2 gel remains stable because the morphology of the gel had no change during the redox process. Exemplarily, the application of DNSA/Eu3+/TiO2 gels to achieve luminescent patterning was investigated. The results demonstrated that the prepared metallogel has potential applications in the fields of writable materials, anticounterfeiting, sensors, and others.
研究领域:
材料科学
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化学
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纳米技术
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光学材料
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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）