JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
·
2017
·Vol. 55
·期 16
·2585-2593
·
IF 2.952
Xiang-Yun Du,Si-Si Liu,Cai-Feng Wang,Guan Wu,Su Chen
A series of the self-healing gels facilely fabricated by VI (N-vinyl imidazole) and MAH-β-CD (β-cyclodextrin grafted vinyl carboxylic acid groups) via bottom-ignited frontal polymerization (BIFP) initiated by magnetocaloric effect. Once ignited the bottom phase, the heat upward propagates to generate the “front” in the upper phase. Then, no further energy is added to maintain the reaction and the whole polymerization process experiences within minutes. In this system, the dependence of frontal velocity and temperature, along with morphology, swelling capacity, mechanical property, and self-healing efficiency, on the preparation parameters is investigated. Interestingly, the gels show good swelling capacity in the organic solvent, comparatively almost no absorption in water. Moreover, the as-prepared gels exhibit excellent auto-healing properties without any external stimuli at ambient temperature. The healed sample possesses 97% recovery of its tensile strength after 8 h healing time, which relies largely on the host–guest interaction between VI and MAH-β-CD. The results demonstrate that FP can be utilized as an efficient and energy-saving method to synthesize self-healing supramolecular gels. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017 , 55 , 2585–2593
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Hui Yu,Guoxin Zhang,Min You,Xinlei Shi,Shaoping Lu,Ziqing Tang,Haiyan Yin,Yitian Zhang,Qiang Chen
It remains a big challenge to fabricate low / medium internal phase gel emulsion for the safe wound dressing with low stimulation to the skin. Herein, utilizing the self-assembly and gelation of amphiphilic herbal small molecule-glycyrrhizic acid (GA) derived from traditional Chinese medicine, a new type of supramolecular gel emulsion (SGE) with antibacterial activity and low / medium internal phase was proposed. In the SGE, the oil droplets were stabilized by the nanofibers self-assembled from GA, and the SGE was formed by the supramolecular assembly of GA nanofibers in the presence of Pickering emulsions. As a result, under low / medium internal phase ( φ = 30–50 %), SGEs could be readily prepared. Antibacterial tests demonstrated that the growth of gram-positive Staphylococcus aureus ( S. aureus ) and gram-negative Escherichia coli ( E. coli ) could be effectively inhibited by the SGE. Additionally, compared to high internal phase SGE, SGE with φ = 50 % displayed lower cytotoxicity and a positive impact on the healing process of infectious diabetic wounds. This work provided a novel approach for constructing low / medium internal phase gel emulsion via herbal small molecule-based supramolecular assembly.
研究领域:
药学
·
材料科学
·
生物医学工程
·
纳米技术
·
中药学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Siyuan Xu,Xiaohong Liang,Kangkang Ge,Haiyang Yuan,Guangming Liu
Gel polymer electrolyte (GPE)-based quasi-solid-state supercapacitors (QSSCs) have attracted great interest in the last 10 years due to the increasing demand of wearable electronics. However, the strong dependence of electrochemical performances on the electrode thickness of the GPE-based QSSCs severely limits their applications. Herein, a low-molecular-weight supramolecular gel electrolyte (SGE) has been successfully developed to render the SGE-based QSSCs a comparable dependence of electrochemical performances on electrode thickness to those based on bulk electrolyte solutions. Two main reasons are responsible for such an observation. First, the as-prepared SGE has an ionic conductivity as high as ∼421 mS cm–1. Second, the combined advantages of small molecular size, low solution viscosity, and good wettability endow the SGE with a capability to effectively infill the thick porous activated carbon electrodes through a sol–gel transition method. Moreover, it has also been demonstrated that the SGE developed here is applicable to a wide range of QSSCs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2021
·
IF 4.158
Hailong Zhang,Bing Lin,Junlei Tang,Yingying Wang,Hu Wang,Hanlu Zhang,Jingyi Cao,Jian Hou,Mingxian Sun,Haibing Zhang
The barrier coating is the most important and effective method for corrosion protection. However, inevitable defects of various scales from micro to macro on coatings due to mechanical damage, aging, corrosive medium penetration, etc. will lead to coating failure. Usually, the damaged coating can only be removed and then recoated. At present, most of coatings are disposable coating and can not be recycled or healing repeatedly. In this paper, a supramolecular gel composite coating was prepared with ethyl cellulose, castor oil, mineral oil, and Fe 3 O 4 nanoparticle, which are bonded together by hydrogen bonds and Van Der Waals forces. This coating could be multiple healed in situ by an alternating magnetic field based on the electromagnetic heating effect of Fe 3 O 4 particles. The SEM/EDS results indicating that the best content of Fe 3 O 4 in coating is 10% for good dispersion. Under an alternating magnetic field, the composite coating can be uniformly heated through hysteresis loss, and starts to heal when the temperature of the composite coating reaches 80 °C. After self-healing process, the mechanical properties and corrosion resistance of the composite coating have almost no difference with the original intact coating. Since the supramolecular gel is bonded by hydrogen bonding and Van Der Waals forces, these bonds are opened when heated and recombined after cooling without any change of properties. Therefore, the microstructure of supramolecular gel composite coating has no significant change and the corrosion protection performance has not decreased after 10 times of healing.
研究领域:
材料科学
·
腐蚀工程
·
纳米技术
·
电磁材料
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jingjing Bai,Haoran Wu,Meng Zhang,Shijun Cui,Xudong Yu,Yajuan Li
The adsorption approach for treating volatile organic compounds (VOCs) offers advantages including high efficiency, safety, absence of secondary pollution, and strong adaptability. Today's development is still hampered by factors such as limited adsorption capacity and the high energy consumption associated with separation processes. Here, terpyridine and tetraphenylene groups are chemically grafted to a polyethyleneimine backbone, and the resulting hPEI@LysTPY@TPE-COOH polymer could gel in a series of organic solvents triggered by ultrasound stimuli. The organogel in cyclohexanol exhibits a green emission, which is distinct from that in other solvents. This unique property facilitates the visual recognition. of cyclohexanol among the tested solvents. Additionally, The organogel was capable of efficiently and continuously adsorbing and liquefying volatile organic compounds (VOCs) at room temperature over several days, operating through a biomimetic osmotic pressure-like adsorption process. The organogel exhibits a remarkable capacity for the selective absorption of acetone (11.7 g/g), carbon tetrachloride (2.5 g/g), and ethyl acetate (3.2 g/g) gas via multiple supramolecular interactions. This process results in the formation of two distinct phases: a solvent-poor phase in a gel state and a solvent-rich phase in a solution state (97 wt%), which could be effortlessly separated. The adsorbents could be regenerated after solution exchange. Finally, the adsorption of carbon tetrachloride is also accompanied by fluorescence quenching, endowing visual detection of the process. The work demonstrates a widely used approach for prepare novel supramolecular material with superior adsorption and separation performance.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Xingying Wang,Yuecheng Wang,Yaohui Zhang,Yujie Ban,Hailing Guo,Weishen Yang
Efficient capture of iodine concerns nuclear waste management. Crystalline metal–organic frameworks (MOF) have been demonstrated to be useful in iodine adsorption, but remain a great challenge due to their complex synthesis conditions and poor processibility. In this study, we synthesized a novel metal-hybrid organic linker gel composed of Zr-carboxylate-tannate networks via competitive coordination-driven gelation. By virtue of supramolecular nuclei aggregation, the gels exhibited a hierarchical micro-mesoporous structure to accommodate iodine molecules. Moreover, the abundant phenolic OH groups of the tannate linker provided adsorption sites for iodine, imparting gels high binding energy with iodine. The gels demonstrated an exceptional iodine vapor adsorption capacity (311 wt%), surpassing many crystalline MOFs. The gels manifested impressively recyclable adsorption performances. The iodine capacity was retained over 95% during three consecutive adsorption–desorption cycles. Interestingly, the metal-hybrid linker coordination and gelation enabled the in-situ formation of monolithic structures, which displayed satisfactory iodine capacity. There is nearly no capacity loss compared to the powder form, indicating that gelation offers a promising in-situ adsorbent shaping manner. This study unlocks the great potential of non-crystalline, easily accessible metal–organic gels as high-performance adsorbents for radionuclide sequestration.
研究领域:
环境科学
·
材料科学
·
核工程
·
无机化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2017
·
IF 4.233
Ni Cheng,Qi Kang,Jianhong Xiao,Na Du,Li Yu
Studies on supramolecular gel aggregates via supramolecular interactions are very fascinating and impressive. The interactions of gelator with solvent and inorganic salt can functionalize, activate, or control the properties of supramolecular gels. A lot of work on this area has been done, but all these contributions are only at an early stage. In this work, we tuned the gel formation conditions and properties by using low-molecular-weight gelator (LMWGs), amide-functionalized imidazolium-based surfactant , viz., N-cetyl-N′-acetamido imidazolium bromide ([N-C 16 , N′-CONH 2 -Im]Br), in different solvents and with inorganic salt additives. Under chemical (Cu 2+ /H 2 O 2 ) and physical (temperature) stimuli, gel-sol phase transition occurred in the gel formed from 2 wt% [N-C 16 , N′-CONH 2 -Im]Br in the solvent formamide (FM). Accompanied with increased mechanical strength of the gels, morphology alternation from initial straight stripe-shaped structures to curly belt-like textures was observed in the addition of CuBr 2 . From Small-angle X-ray scattering (SAXS) measurements, bilayer units with interdigitated hydrocarbon tails of the gelator were testified to appear in the gels. Comparative experiments demonstrate that the π-π interaction, H-bonding, and hydrophobic interaction between the gelator molecules are the main driving forces for the gelation . The low-cost gelator, facile preparation, and coordination-driven assembly process make the robust gel a good candidate in various applications, such as material templates and drug deliveries.
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2018
·
IF 2.21
Wei Zhang,Zhiyuan Wang,Keyu Chen,Lang Li,Li Tao,Jun Zhang,Hao Wang
Two types of bi-component supramolecular gel electrolytes were prepared. It is interesting that the single molecular N,N ′-1,3-propanediylbis-dodecanamide cannot form gel electrolyte. However, when 1,6-diaminohexane and adipic acid as co-gelators were added to the liquid electrolyte containing N,N ′-1,3-propanediylbis-dodecanamide, the corresponding supramolecular gel electrolytes, Gel 1 and Gel 2 were formed. And these two gel electrolytes exhibit significantly different morphology of 3D network. The influences of different morphology and electrolyte component on the dynamic process and photovoltaic performances of quasi-solid-state dye-sensitized solar cells (QS-DSSCs) were investigated by the controlled intensity modulated photocurrent/photovoltage spectroscopy (IMPS/IMVS) measurements and electrochemical impedance spectroscopy (EIS) measurements. It is found that Gel 2 presents a sparser network structure compared with Gel 1. Moreover, Gel 2 based QS-DSSC shows a dramatic enhancement in short circuit photocurrent density ( J sc ) and while a slightly decrease in open circuit voltage ( V oc ) than those of Gel 1 based QS-DSSC. And more remarkable, the power conversion efficiency of Gel 2 based QS-DSSC (5.89%) is higher than that of Gel 1 based QS-DSSC (5.05%), which even slightly exceeds that of the DSSC based on the liquid electrolyte (5.82%).
研究领域:
材料科学
·
物理化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Qian Wu,Li Yang,Hong Wang,Shihua Dong,Longquan Chen,Juntang Li,Jiaxi Cui
Droplet-embedded structures are useful in functionalizing polymer composites but difficult to prepare. Herein, we report a facile self-born method for creating droplets in supramolecular gels to mediate the material’s functions. This method is based on the amplification of the defects of polymer matrices generated in curing by swelling-driving reconfiguration of supramolecular polymer networks. The system of poly(urea-co-polydimethylsiloxane) that can cross-link via hydrogen-bond interaction is used to demonstrate our concept. The elastomer matrices are prepared via a casting method and exhibit a heterogeneous structure with both strong- and weak-cross-linking domains. When these materials are swelled in solvents, solvent molecules concentrate in the weak-cross-linking domains to nucleate. With the reconfiguration of the matrices, the nuclei grow into pure droplets, leading to the formation of droplet-embedded structures. This method is applicable to different material systems. We also show that obtained coatings with such droplet-embedded structures exhibit various interesting properties including self-replenishment of the surface liquid, mechanoresponsiveness, and self-healing ability. Moreover, after the droplets are consumed, this method can be used to regenerate the droplet-embedded structure for refunctionalizing the materials. Therefore, we envision its applications in preparation of many useful polymer composites.
研究领域:
材料科学
·
高分子化学
·
软物质物理
·
表面工程
·
自修复材料
✓ 已验证
DOI
高影响因子
Soft Matter
·
2022
·Vol. 18
·期 16
·3241-3248
·
IF 4.046
Ying Zhang,Hejie Wang,Qintang Li,Xiao Chen
As novel solvents, deep eutectic solvents (DESs) are non-toxic, easily producible and biocompatible, which is attractive for eutectogel fabrication. In this work, a benzene 1,3,5-tricarboxamide (BTA) derivative (substituted by three hexanoic acid) was selected to prepare a supramolecular gel in a suitable DES composed of choline chloride and phenylacetic acid molecules. The obtained eutectogel exhibited higher stability than that produced in conventional solvents. The gel microstructure was composed of spiral fiber networks as confirmed from atomic force microscopy and scanning electron microscopy observations. Macroscopic chirality was therefore recognized by the circular dichromatic spectrum, though such a supramolecular chiral signal was random. To explore the gelation mechanism, the effect of BTA derivative molecular structure change was systematically investigated. With the help of Fourier transform infrared spectroscopy and powder X-ray diffraction, the gel formation was attributed to the π–π stacking of adjacent BTA molecules and the three-fold hydrogen bond between amide groups or the hydrogen bond between carboxylic groups. Furthermore, the directional hydrogen bonds between BTA and solvent molecules induced their aggregate to form one-dimensional fibers, which were either left- or right-handed. The obtained results not only extend the gel systems in DESs, but also help design the supramolecular chirality from non-chiral molecules.
研究领域:
材料科学
·
超分子化学
·
物理化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Today
·
2023
·
IF 17.4
Jingjing Hu,Xujiao Zhou,Sijia Chen,Di Yin,Yuhan Yang,Minjie Chen,Chunyi Gui,Yujia Cai,Jiaxu Hong,Yiyun Cheng
Herpes simplex keratitis (HSK) caused by herpes simplex virus-1 infection of the cornea has taken a significant toll on the visual health of people worldwide. Anti-viral hydrogels are preferred in the treatment of HSK due to enhanced topical drug retention and reduced side effects, however, current polymer-based gelling systems usually generate clumpy or uneven gel layers on ocular surface, and are easily cleared by eyelid blinking. This study proposes a supramolecular gel co-assembled by all-small-molecule building blocks including ganciclovir and 2′-deoxyguanosine in the presence of potassium ions . The developed gel performs fascinating rheological and texture properties including high viscoelastic, good spread ability, and deformation recovery behavior, enabling the formation of a uniform and thin gel layer on ocular surface to resist the clearance by eyelid blinking and tear washing. The gel shows similar ocular convenience, but much longer drug retention in ocular tissues and higher therapeutic efficacy compared to the clinical ganciclovir gel on the primary and recurrent mouse HSK models, rabbit HSK models, and also efficiently inhibited the HSV-1 replication in ex vivo human corneal tissues . The results suggest that this all-small-molecule supramolecular gel could be a promising drug formulation for treating HSK. Data and materials availability The main data supporting the results in this study are available within the paper and its Supplementary Information . The associated raw data and analyzed datasets are too large to be readily shared publicly, but they are available from the corresponding author on reasonable request.
研究领域:
药剂学
·
病毒学
·
眼科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2025
·
IF 3.4
Min Xue,Junjie Fu,Furui Shang,Gang Wang,Lei Zhang,Hongjuan Lv
Two acylhydrazone derivatives with long-chain alkyl groups, DHS (salicylaldehyde-based) and DHN (naphthaldehyde-based), were designed and synthesized. Both compounds exhibited supramolecular gelation abilities, and DHN was a supergelator for benzene. The single-crystal X-ray diffraction analysis revealed that DHS forms dimers via intermolecular hydrogen bonding. The powder X-ray diffraction (PXRD) studies showed that DHS adopts different repeating units in benzene and propanol gels. Based on the results obtained from single-crystal structure, PXRD, and mass spectrometry measurements, a plausible self-assembly evolution of gelator molecules was proposed. This work demonstrated that the single-crystal structures could provide critical insights into the molecular packing of the gel state. The fluorescence spectra and in situ monitoring of the gelation process confirmed that both DHS and DHN possess typical aggregation-induced emission (AIE). Notably, DHS functions as a highly sensitive optical chemosensor for Al3+, achieving quantitative detection with a remarkable minimum detection limit of 4.79 nM.
研究领域:
材料科学
·
超分子化学
·
分析化学
·
有机化学
·
晶体学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）