CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Dong-Xue Xia,Xin Wang,Wen-Qi Sun,Rui-Lian Lin,Jing-Xin Liu,Ying-Wei Yang
Inspired by Chameleons' skin color tuning in response to environmental changes, we design and prepare three inclusion complexes based on the cucurbit[7]uril (Q[7]) host and three viologen guests. Upon light irradiation, the colors of these inclusion complexes in the solid state turn from light colors to vivid three primary colors, i.e., red, green, and blue, respectively. Ultraviolet–visible (UV–vis) diffuse reflectance and electron spin resonance (ESR) spectra reveal that the photochromism can be attributed to the generation of viologen radicals, originating from the photoinduced electron transfer. The results of quantum chemical calculation indicate that Q[7] in the inclusion complexes acts as the electron donor in the photoinduced electron transfer process. Using a color mixing approach and finely manipulating the proportions of the three inclusion complexes, a series of composite photochromic materials (CPMs) can be manufactured, covering a full-color gamut in visible light. On the other hand, due to the ignorable size and shape change of CPMs during the photochromatic processes, the CPMs-based reversible photochromic “printing” and photofading “erase” properties were also used for quick response (QR) code. Therefore, these prominent intelligent features of CPMs open new avenues to explore optical regulated nano-platforms for multiple anti-counterfeiting, biomimetics, and military camouflage applications.
研究领域:
材料科学
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化学
·
仿生学
✓ 已验证
DOI
高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2025
·
IF 2.7
Wentao Hao,Chenchen Ke,Xianxiang Pan,Tengfei Qi,Wenping Wang,Wenjuan Li,Wen Yang
Fluorescent supramolecular materials have attracted a lot of attention over the past few decades. However, those can respond to multiple stimuli are not often reported, especially for the nonconventional fluorescent materials. Here, a supramolecular material is reported that can respond to temperature/electrical heating, humidity, volatile acids/organic amines, and mechanical strain. This material is prepared by physical mixing oligomeric polyethyleneimine (o-PEI) and oligomeric polyacrylic acid (o-PAA). Although they are almost non-fluorescent, their combination produces bright fluorescence, and the emission bands shift to longer wavelengths as the amount of o-PAA increases. Calculations based on Density Functional Theory (DFT) show that there are strong noncovalent interactions between o-PEI and o-PAA, resulting in through-space conjugation and cluster-triggered emission. By studying the relationship between emission intensity, temperature, and molecular motion, the dependence of emission intensity on relaxation time is established, which will provide insight into the luminescence origin of nonconventional fluorescent materials. In addition, this material shows good self-healing ability. The luminescence, responsiveness and self-reparability are all related to the strong but reversible noncovalent bonds that link the o-PEI and o-PAA. This work not only highlights the value of supramolecular polymers, but also enriches the research of nonconventional fluorescent materials.
研究领域:
材料科学
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化学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2015
·Vol. 3
·期 14
·3273-3279
·
IF 4.696
Yanjun Gong,Qiongzheng Hu,Ni Cheng,Tao Wang,Wenwen Xu,Yanhui Bi,Li Yu
Constructing multiple-response smart materials is a very interesting and challenging task in materials science. Here we employed an ionic self-assembly (ISA) strategy to fabricate pH- and temperature-responsive supramolecular materials with controllable fluorescence emission properties by using charged Congo red (CR) and an oppositely charged COOH-functionalized imidazolium-based surface active ionic liquid (SAIL), N-decyl-N′-carboxymethyl imidazolium bromide ([N-C10, N′-COOH-Im]Br). One-dimensional (1D) slender fibers were obtained in aqueous solution at pH 3.2 by the self-assembly of CR/[N-C10, N′-COOH-Im]Br (molar ratio = 1 : 2) at room temperature. Noteworthy is that two-dimensional (2D) planar structures, viz. bamboo leaf-like, spindly, discoid and rectangular structures, were then formed only by further changing the pH of the solution. Of particular interest is that the transition between 1D and 2D structures is pH reversible. We also found that the slender fibers could aggregate into fiber bundle structures with increasing temperature. In addition, fluorescence emission of the obtained 1D and 2D materials can be controlled by adjusting the morphologies of the aggregates. The electrostatic and hydrophobic interactions, in concert with π–π stacking between Congo red and [N-C10, N′-COOH-Im]Br molecules, were regarded as the main driving forces. The dimer-type π–π stacking existing among CR molecules was testified by DFT calculations.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2025
·
IF 4.5
Wentao Hao,Chenchen Ke,Xianxiang Pan,Tengfei Qi,Wenjuan Li,Peng Cui,Wen Yang
Over the past two decades, nonconventional fluorescent compounds have been attracting the attention of researchers. However, the discovery of new materials and the exploration of their luminous properties, mechanisms and applications are still limited by the delicate design, extraordinary skill and time-consuming synthesis. Here, a simple method is proposed to prepare nonconventional fluorescent materials by physically blending the Nitrogen-rich oligomeric polyethyleneimine (oligo-PEI) and Oxygen-rich tartaric acid (TA). The strong Coulomb force between these two compounds bind them together, resulting in the clustering of the electron-rich groups and enhanced through-space conjugation. As the relative amount of TA increases, the maximum emission peak gradually shifts from 460 nm to 540 nm. In addition, the intensity of the emission peak at 540 nm increased significantly, with the highest value being 8 times the original value. This reveals the great potential of supramolecular materials in freely modulating their fluorescence properties. To gain insight into the interactions between oligo-PEI and TA, density functional theory (DFT) calculations were performed and meaningful results were obtained. Moreover, the relationship between fluorescent intensity, temperature and relaxation time of nonconventional fluorescent materials was quantitatively determined. On this basis, electrothermal responsiveness of oligo-PEI/TA was investigated. Within 2 min, the fluorescence intensity decreased by about 30 % as the temperature was raised from 30 °C to 40 °C by electric heating. In short, this work will be a good reference for scholars interested in nonconventional fluorescent materials.
研究领域:
材料科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Ning Pan,Yongdong Jin,Xiaoqiang Wang,Xiaoping Hu,Fangting Chi,Hao Zou,Chuanqin Xia
Herein, we report a convenient method for the preparation of a self-assembled supramolecular material containing phosphoric acid (PM) choosing phytic acid and melamine as the two organic building blocks. The PM was chosen as an adsorbent for the first time for the fast adsorption and recovery of U(VI) from acidic aqueous media. The batch adsorption experiments showed that PM-9 possesses a very fast adsorption kinetic with the adsorption process for U(VI) from acidic water reaching equilibrium within 2 min. A considerable adsorption capacity of 1034.9 mg/g and an excellent selectivity 58.6% toward U(VI) in acidic aqueous solution were obtained. The adsorption capacity in dynamic column experiment was determined to be 251.0 mg g–1, with the recovery efficiency as high as 99.4% when using Na2CO3 as a stripping agent. The adsorption mechanism was probed by FT–IR, XRD, SEM, XRF, and XPS, implying the double bond oxygen atom of phosphoric acid and the nitrogen atom of amino group complexes with uranyl ions in the acidic media.
研究领域:
化学
·
环境科学
✓ 已验证
DOI
高影响因子
Small
·
2022
·Vol. 19
·期 10
·2206075
·
IF 15.153
Ruiqi Li,Shu Tian,Yunqing Tian,Jiancheng Wang,Sijia Xu,Kai Yang,Jing Yang,Lei Zhang
Anti-icing coatings on outdoor infrastructures and transportations inevitably suffer from surface injuries, especially in extreme weather events (e.g., freezing weather or acid rain). The coating surface damage can result in anti-icing performance loss or even icing promotion. The development of anti-icing coatings that enables self-healing in extreme conditions is highly desired but still challenging. Herein, an extreme-environment-resistant self-healing anti-icing coating is developed by integrating fluorinated graphene (FG) into a supramolecular polymeric matrix. The coating exhibits both anti-icing and deicing performance (ice nucleation temperature is ≈−30.3 °C; ice shear strength is ≈48.7 kPa), mainly attributable to the hydrophobic FG and silicone-based supramolecular material. Notably, owing to the crosslinking polymeric network with various dynamic bonds, this coating can sustain anti-icing/deicing performance after autonomous self-healing under harsh conditions including low temperature (−20 °C), strong acid (pH = 0), and strong alkali (pH = 14) environments. This coating paves the way to meet the anti-icing demand in open air, especially for the infrastructures in polar regions or acid/alkali environments.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Hua Wang,Yangxue Fu,Pei Liu,Fei Qu,Shuo Du,Yan Li,Hongyao Du,Lianbin Zhang,Juan Tao,Jintao Zhu
Glucocorticoid-based creams are commonly used for treatments of psoriatic skin lesions while showing poor permeation because the thickened stratum corneum severely limits drug absorption. Although dissolving microneedle (DMN) patches have been employed in treating skin disease by virtue of their direct target to the lesion site, conventional DMN patches are generally fabricated from the water-soluble matrix, making them difficult to efficiently encapsulate hydrophobic glucocorticoids. Here, we develop a mechanically robust supramolecular DMN composed of hydroxypropyl β-cyclodextrin (HPCD) to effectively and uniformly load triamcinolone acetonide (TA). The TA-loaded HPCD DMN (TAMN) exhibits excellent mechanical performance that can easily pierce the thickened psoriasis lesions and deliver TA efficiently. Owing to the increased water solubility and bioavailability of TA after inclusion into HPCD, TAMN shows a superior in vitro inhibitory effect on immortalized human keratinocyte (HaCaT) cells. Importantly, the administration of TAMN twice a week effectively alleviates psoriatic signs and reduces the expression of Ki67, IL-23, and IL-17 in the ear lesions of imiquimod-induced psoriasis-like mice. This supramolecular DMN provides a promising strategy for the efficient treatment of psoriasis and other skin diseases, greatly broadens the applications of supramolecular materials in transdermal drug delivery, and widens the range of drugs in DMNs.
研究领域:
药剂学
·
皮肤病学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER
·
2023
·
IF 4.6
Xuehui Liu,Xu Zhao,Wenli An,Xuelian Zhou,Shun Zhang,Shimei Xu,Yu-Zhong Wang
Many recovery strategies have been proposed since vast of plastic wastes pose a threat to environment, but adding value and tackling circularity are still challenging. Herein, we report the direct converting of waste epoxy resins into multiple-responsive (temperature, water and pH) supramolecular materials via acid-catalyzed oxidation . In the degradation process, we find the effective synergism of hydrogen peroxide and protonic acid, where protonic acid activates C–N bonds of the thermosets and enhances mass transfer, while hydrogen peroxide attacks them to produce oligomers with abundant functional groups. Thus, the oligomers as building blocks assemble into polymers through hydrogen bonds . This design allows non-recyclable thermosets into value-added and recyclable new materials, pointing out a sustainable way to circumvent environmental and resource issues caused by plastic wastes. This work is also expected to impact materials science of designing split-new functional materials.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2016
·
IF 5.886
Qianchun Zhang,Gongke Li,Xiaohua Xiao,Song Zhan,Yujuan Cao
Cytokinins play a critical role in controlling plant growth and development, but it is difficult to be determined in plant samples due to the extremely low concentration level of picomole/gram. So it is important for efficient sample preparation with selective enrichment and rapid separation for accurate analysis of cytokinins. Herein, a supramolecular perhydroxy-cucurbit[8]uril (PCB[8]) was fabricated into the Fe3O4 magnetic particles via chemical bonding assembly and magnetic perhydroxy-cucurbit[8]uril (MPC) materials were obtained. The MPC had good enrichment capability to cytokinins and the enrichment factors were more than 208. The interaction of MPC and cytokinins was investigated by adsorption test and density functional theory (DFT) calculation, the results showed that the main drive forces were the host–guest interaction and hydrogen-bonding interaction between the perhydroxy-cucurbit[8]uril with analytes. Combined with ultra performance liquid chromatography–tandem mass spectrometry (UPLC–MS/MS), the MPC was used as a sorbent of magnetic solid-phase extraction for the analysis of cytokinins in plant samples. A sensitive and selective UPLC–MS/MS method was developed with low detection limits of 0.14–0.32 ng/L for cytokinins analysis. Five cytokinins including zeatin riboside, meta-topolin, kinetin, kinetin riboside, and zip with 6.12–87.3 ng/kg were determined in the soybean sprout and Arabidopsis thaliana. The recoveries were in the range of 76.2–110% with relative standard deviations (n = 5) of 2.3–9.7%. On the basis of these results, magnetic perhydroxy-cucurbit[8]uril materials with selective enrichment capability have good potential on the analysis of ultratrace targets from complicated sample matrixes.
研究领域:
植物学
·
分析化学
✓ 已验证
DOI
PubMed
高影响因子
Polymer Chemistry
·
2014
·Vol. 5
·期 8
·2922-2927
·
IF 5.368
Yi-Fu Wang,Da-Li Zhang,Tao Zhou,Hong-Su Zhang,Wan-Zhen Zhang,Ling Luo,Ai-Ming Zhang,Bang-Jing Li,Sheng Zhang
Humanity has an urgent need to develop more degradable materials for solving environmental pollution. In this study, through host–guest interactions between fatty acids-modified β-cyclodextrin (Em-βCD) and polyethylenimine (PEI) oligomer-grafted ferrocene (PEI-Fc), we designed and prepared a supramolecular polymer (PEI-Fc/Em-βCD complex), which showed polymeric properties and was able to be used as a cushioning material due to its good compressibility. Compared with conventional polymers, a remarkable advantage of the PEI-Fc/Em-βCD complex is that it can be dismantled into small molecules and rebuilt easily by controlling the dissociation or reformation of βCD-Fc inclusion complexes. Furthermore, the material also exhibited good self-healing properties.
研究领域:
材料科学
·
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Applied Materials Today
·
2025
·
IF 6.9
Xiaohan Guo,Huan Liu,Aminov Nail,Decheng Meng,Cong Li,Xiaoqing Ye,Huanjun Li
Eutectogels, as emerging soft materials, have garnered significant attention; but integrating multiple functionalities into a single system remains a challenge for practical applications. This work presents a supramolecular eutectogel synthesized via a facile one - step photo - initiated polymerization strategy, employing a synergistic network of hydrogen bonding and electrostatic interactions. The resulting eutectogel exhibits exceptional optical transparency and mechanical performance, achieving a tensile strength of 7.15 MPa, an elongation at break over 700 %, and a toughness of 36.27 MJ·m -3 at ambient conditions. Notably, the supramolecular design enables strong adhesion to various substrates, delivering average bonding strengths of 7.08 MPa (stainless steel) and 5.57 MPa (wood), with stable adhesion retention after 12 - day ambient storage. A unique water - triggered debonding mechanism allows for non - destructive detachment, coupled with full material recyclability through water - based reconfiguration (retaining 85 % strength after five cycles). The eutectogel further demonstrates high - precision 3D printability and antibacterial inhibition zones against Escherichia coli /S. aureus via zwitterionic SBMA hydration layers. This study offers a promising strategy for creating functionally integrated smart soft materials with environmental adaptability.
研究领域:
高分子科学
·
生物材料
·
软物质物理
·
功能材料
·
再生医学
·
抗菌材料
·
增材制造
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2019
·Vol. 30
·期 6
·5536-5543
·
IF 2.195
Yu Zhihao,Gao Tianji,Le TrungHieu,Wang Wenxuan,Wang Li,Yang Ying
This study reports a supramolecular self-healing material as a multi-functional binder for lithium–sulfur batteries. The spontaneously damage repair ability of such a binder can be applied to overcome the short cycle-life issue of lithium–sulfur batteries under low current density with deep galvanostatic cycling. Diamines and polybasic acids are used to synthesize the supramolecular self-healing material. 10 wt% amine groups in this designed material provide a large amount of chemical adsorption sites for polysulfides which can effectively inhibit the shuttling of polysulfides and maintain the content of sulfur species in cathode. This N-rich binder is mixed with the sulfur during preparation, which can improve the effective contacting surface of N function groups and sulfur locally. The cells with pure self-healing material binder achieve an initial capacity of 918 mAh g −1 , and maintain a reversible capacity of 469 mAh g −1 after 200 cycles at 0.1C, twice higher than the retention capacity of cells with polyvinylidene fluoride binder. After optimization, the cells with a hybrid binder of self-healing material and polyvinylidene fluoride (weight ratio of 1:1) with a sulfur loading of 2.65 mg cm −2 achieve an initial capacity of 993 mAh g −1 , and remain a reversible capacity of 571 mAh g −1 with a capacity fade of 0.2% per cycle after 200 cycles at 0.1C.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米复合材料
·
高分子化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）