JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Mei-Ling Liu,Ying Tang,Lu Li,Yuanyuan Rao,Shi-Peng Sun,Weihong Xing
The adhesion of bacteria from aquatic environments onto membrane surfaces can severely compromise the membrane’s fluorinated compound rejection efficiency. While graphene oxide membranes demonstrate potential for pollutant separation, their practical application is constrained by interlayer swelling and interfacial instability. This study developed a reduced graphene oxide (rGO) composite membrane cross-linked via supramolecular host-guest interactions and ionic synergy, using cucurbit[6]uril (CB6) and silver ions, supported on polyaniline/polyimide electrospun nanofibers. CB6 formed stable complexes through ion-dipole interactions of polar carbonyl groups with silver ions, while cation-π interactions of silver ions with rGO establish a ternary cross-linked network, effectively suppressing interlayer swelling and precisely tuning nanochannel size. The membrane achieves a 98.2% rejection rate for perfluorooctanoic acid. Additionally, silver ions, CB6, and rGO endow the membrane with long-lasting antibacterial properties, exhibiting a 99.6% inhibition rate against Escherichia coli . This supramolecular synergistic strategy offers a novel approach for designing multifunctional membranes with high-efficiency separation and anti-biofouling performance.
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高影响因子
TALANTA
·
2018
·
IF 4.244
Qian Zhang,Dong-Dong Zhou,Jia-Wei Zhang,Die Gao,Feng-Qing Yang,Hua Chen,Zhi-Ning Xia
In this study, a novel amino-terminated supramolecular cucurbit [6] uril (CB [6]) pseudorotaxane motif coated magnetic nanoparticles (MNPs) was successfully fabricated through cucurbit [6] uril promoted azide-alkyne cycloaddition. The physicochemical properties of the obtained functional MNPs were investigated by scanning electron microscope, transmission electron microscope, energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, X-ray diffractometer, vibrating sample magnetometer, thermal gravimetric-derivative thermogravimetric analysis , and Zeta potential analyzer. Due to the abundant carboxyl groups in the structure of CB [6] and amino residue on the surface of the pseudorotaxane motif MNPs, the prepared materials were employed to extract salvianolic acids (SAs) for the first time. A series of significant parameters in the extraction and elution process, including sample pH, acetonitrile percentage, ionic strength and extraction temperature, as well as eluent type and desorption time, were examined systematically. Based on the results, the electrostatic interaction , van der Waals interaction , hydrophilic interaction and hydrogen bonding formation between the analytes and sorbent were speculated. The equilibrium state of static adsorption study indicated the outstanding adsorption capacity of pseudorotaxane motif MNPs toward six SAs to be 15–80 mg/g, providing much better adsorption affinity for SAs compared with MNPs only modified with amino, and their adsorption behaviors were all fitted with Freundlich adsorption isotherm model. In addition, the developed pseudorotaxane motif MNPs offered good recyclability and stability. Taking advantage of these merits, four SAs from Salvia miltiorrhiza Bunge were successfully extracted using the prepared pseudorotaxane motif MNPs with relative recovery in the range from 95.1% to 106.5% and RSDs below 9.7%. These results demonstrated that the synthesized pseudorotaxane motif MNPs showed potential as a candidate in the extraction of SAs.
研究领域:
材料科学
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纳米技术
·
分析化学
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药学
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PubMed
高影响因子
Small
·
2020
·Vol. 16
·期 39
·2002718
·
IF 11.459
Daping Qiu,Min Li,Cuihua Kang,Jinying Wei,Feng Wang,Ru Yang
The intrinsic properties of carbon-based material and the voltage window of electrolyte are the two key barriers to restrict the energy density of carbon-based supercapacitors (SCs). Herein, a cucurbit[6]uril-derived nitrogen-doped hierarchical porous carbon (CBC x ) with unique pore structure characteristics is synthesized and successfully applied to construct SCs based on different electrolyte systems. Owing to narrow pore size distribution (0.5–4 nm), colossal ion-accessible pore volume, prominent supermesopore volume, and reasonable heteroatom configuration, the CBC x -based SCs demonstrate excellent electrochemical performances with high operating voltages in two distinct systems. The optimal SCs can output a maximum energy/power density of 18 Wh kg −1 (11.1 Wh L −1 )/20 kW kg −1 (12.3 kW L −1 ) with an operating voltage of 1.2 V in potassium hydroxide aqueous electrolyte, as well as an ultralong cycle life of up to 50 000 cycles (0.046% decay per 100 cycles). Furthermore, the optimal SCs deliver an exceptionally high energy/power density of 95 Wh kg −1 (58.4 Wh L −1 )/70 kW kg −1 (43 kW L −1 ) with an ultrahigh operating voltage of 3.5 V in 1-ethyl-3-methylimidazolium tetrafluoroborate electrolyte. This work opens up a new application field for cucurbit[6]uril and provides an alternative avenue for optimizing the performances of carbon-based materials for SCs.
研究领域:
材料科学
·
能源存储技术
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DOI
高影响因子
POLYMER
·
2026
·
IF 5.1
Yuzeng Li,Zhen Fan,Zhenyu Feng,Zixiang Xu,Nurimangul Muntiza,Yi Ru,Qinran Li,Hongfeng Zhang,Jin Zhao,Qiliang Deng,Donglan Sun,Tianjun Liu
A novel strategy for cytochrome c (Cyt c) selective recognition with the epitope imprinting and host-guest interaction dual-mechanism recognition was developed via reversible addition-fragmentation chain transfer polymerization regulated by a cucurbit[6]uril-functionalized chain transfer agent (CB[6]-CPAD). CB[6]-CPAD attaches to N-terminal epitope GI-9 through host-guest interactions between cucurbit[6]uril and lysine-residue. It regulates the imprinted polymers via the modulatory effect of disulfide esters, thereby enhancing the accessibility of cucurbit[6]uril within the imprinted sites. After polymerization and template removal, the imprinted particles exhibited well binding affinity for GI-9 (8.40 mg⋅g -1 , IF = 1.62) and Cyt c (11.32 mg⋅g -1 , IF = 1.62) at 45°C and obvious selective recognition of Cyt c over other proteins with a significantly higher IF, which were driven by the combination of molecular imprinting and host-guest interactions. It indicated that the construction of temperature-sensitive dual-mechanism recognition combining epitope imprinting and host-guest interactions can effectively achieve selective recognition of the target protein.
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高影响因子
MICROCHIMICA ACTA
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2019
·Vol. 187
·期 1
·1-12
·
IF 5.479
Zheng Haijiao,Jia Qiong
A hybrid monolith was prepared from perovskite and cucurbit[6]uril [poly(hydroxyethyl methacrylate-pentaerythritol triacrylate) monolith] for the enrichment of phosphopeptides. By coupling with mass spectrometry, three goals were simultaneously realized, viz. (a) selective enrichment of phosphopeptides from non-phosphopeptides, (b) identification of mono- and multi-phosphopeptides, and (c) recognition of tyrosine phosphopeptides. The perovskite introduced into the monolith warrants high selectivity for phosphopeptides even at a high (10,000:1) ratio of non-phosphopeptides to phosphopeptides, and and enables identification of eight mono- and multi-phosphopeptides from standard β-casein tryptic digests. Tyrosine phosphopeptides were specifically detected via the recognition capability of cucurbit[6]uril integrated into the monolith. The method has remarkably specific enrichment capacity for phosphopeptides from samples including human serum, nonfat milk, and human acute myelocytic leukemia cell lysate.
Schematic representation of a monolith integrated with perovskite and cucurbit[6]uril. The monolithic column was coupled with mass spectrometry and applied to the enrichment of phosphopeptides. The method has remarkably specific enrichment capacity for phosphopeptides from complex biological samples.
研究领域:
分析化学
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生物化学
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蛋白质组学
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PubMed
高影响因子
TALANTA
·
2025
·
IF 6.1
Nurimangul Muntiza,Wenbin Zhang,Yuzeng Li,Wenquan Ji,Jin Zhao,Hongfeng Zhang,Qinran Li,Qiliang Deng,Donglan Sun,Tianjun Liu
A novel strategy for cytochrome c selective recognition assisted with cucurbit[6]uril by host-guest interaction via N-terminal epitope imprinting and reversible addition-fragmentation chain transfer (RAFT) polymerization was developed. N-terminal nonapeptide of cytochrome c (GI-9) was used as the epitope template to achieve highly selective recognition of cytochrome c . As a common supramolecule in recent years, cucurbit[6]uril can encapsulate the butyrammonium group of lysine residue to capture the peptide and improve the corresponding spatial orientation by the host-guest interaction for GI-9 or cytochrome c recognition. After cucurbit[6]uril modification and epitope immobilization, the imprinted polymer was synthesized by RAFT polymerization with 2-dodecylsulfanylcarbothioylsulfanyl-2-methylpropanoic acid as chain transfer agent. After template removal, the obtained imprinted particles showed good binding ability to GI-9 (20.28 mg g −1 , IF = 4.11) and cytochrome c (36.12 mg g −1 , IF = 3.91). With the successive addition of cucurbit[6]uril and RAFT agent, the step-by-step improvement of the IF for cytochrome c recognition further illustrated the effects of supramolecular host-guest interaction and regulation of imprinted polymer chain. The imprinted polymers showed obvious advantages for cytochrome c recognition compared to competitive proteins and had good reusability with the repeated reproduction rate 80.8 % after five cycles of adsorption and desorption. Furthermore, the selective recognition for cytochrome c in adult bovine serum proved its potentiality to be applied in practical samples. All these results demonstrated that the combination of epitope imprinting, cucurbit[6]uril host-guest interaction and RAFT strategy presented an efficient new feasible control method for protein recognition with good selectivity, stability and reusability.
研究领域:
生物化学
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分子生物学
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材料科学
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DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2025
·Vol. 54
·期 19
·7753-7764
·
IF 3.3
Feiyang Tian,Ruixue Cheng,Yujing Shang,Le Pan,Xiuyun Cui,Xuekai Jiang,Kai Chen,Huajun Zhao,Kuiyuan Wang
Cucurbit[n]urils, owing to their unique structural features, exhibit versatility in performing tasks such as adsorption, detection, and catalysis. However, the scope of their catalytic applications remains limited, primarily because most cucurbituril-based catalytic reactions take place in either aqueous or organic phases. In this study, we have successfully synthesized porous honeycomb composites of cucurbit[6]uril with cobalt and nickel (denoted as Co@Q[6] and Ni@Q[6], respectively) and applied them in a photothermal synergistic heterogeneous gas–solid reaction for the reduction of nitrogen to ammonia under mild conditions. This represents a groundbreaking achievement, as it is the first instance where a cucurbit[n]uril-based material has demonstrated catalytic functionality in its solid-state form, thereby introducing a novel concept for the design and application of cucurbit[n]uril-based photocatalysts. To characterize the structure of these composites, we employed a range of techniques including X-ray absorption fine structure (XAFS) analysis, transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and hydrogen temperature-programmed reduction (H2-TPR). Our findings revealed that Ni@Q[6] exhibits higher photothermal catalytic ammonia synthesis activity compared to Co@Q[6]. This enhanced activity is attributed to the strong metal–support interaction (MSI) between Ni and Q[6], which facilitates electron transfer and nitrogen activation. Furthermore, the thermal source promotes the transition of electrons from the valence band to the conduction band, thereby enhancing the cleavage of the NN bond. Notably, the band gaps of Co@Q[6] and Ni@Q[6] are significantly reduced. In particular, Ni@Q[6] demonstrates the highest efficiency in electron–hole pair separation, as evidenced by photoluminescence (PL) and electrochemical impedance spectroscopy (EIS) measurements. Overall, Co/Ni@Q[6] provides an effective pathway for nitrogen reduction under mild conditions and advances the application of cucurbituril-based materials in photothermal catalysis. This work also contributes to the development of environmentally sustainable ammonia synthesis technology.
研究领域:
材料科学
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无机化学
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催化
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纳米技术
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环境科学
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光化学
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PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2016
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IF 3.926
Nan Dong,Tao Li,Yujie Luo,Lin Shao,Zhu Tao,Chun Zhu
A novel solid-phase microextraction coating that contains perhydroxy cucurbit[6]uril((OH) 12 Q[6]) was prepared by a sol–gel method. (OH) 12 Q[6] was used as a starting coating material with hydroxy-terminated poly(dimethylsiloxane) (OH-PDMS) to bond chemically to a fused-silica substrate using 3-(2-cyclooxypropoxyl)propyltrimethoxysilane as cross-linking agent; hydrolysis and polycondensation reactions then led to the formation of a (OH) 12 Q[6]/PDMS-coating. The coating has a high thermal stability (360 °C), long lifetime and can withstand organic and inorganic solvent rinsing because of the chemical binding between the coating and silica substrate. Its performance was tested by headspace (HS) solid-phase microextraction fiber coupled with gas chromatography to determine polycyclic aromatic hydrocarbon (PAHs) compounds in water samples. The (OH) 12 Q[6]/PDMS-coated fiber exhibited higher enrichment factors from fourfold for naphthalene to tenfold for pyrene compared with commercial PDMS fiber, and the enrichment factors increased with the number of condensed PAH rings. The strong adsorption affinity is believed to be attributed to hydrogen bonding and C H⋯π interactions between PAHs and (OH) 12 Q[6], according to the results of quantum chemical calculations. In the PAH analysis, the (OH) 12 Q[6]-coated fiber showed a good repeatability (< 4.7%) and reproducibility between fibers (< 9.4%), low detection limits (0.03–0.15 μg L −1 ), and a wide linearity (0.1–1000 μg L −1 ) under optimized conditions. This method was used for the simultaneous determination of seven PAHs with satisfactory recoveries of 90.56%–107.4% for Huaxi river water samples and 90.23%–109.5% for local wastewater samples, respectively.
研究领域:
分析化学
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环境科学
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PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 14
·6738-6746
·
IF 3.925
Xin Dai,Xian-Yi Jin,Rui-Han Gao,Qing-Mei Ge,Kai Chen,Nan Jiang,Hang Cong,Zhu Tao,Mao Liu
Photoelectrochemical water splitting based on g-C3N4 is considered as a promising approach to oxygen generation. Hereinto, an innovative photoanode, g-C3N4/Q[6]–Co NPs, is successfully fabricated by depositing a Co nanocatalyst on the surface of a g-C3N4 film. The nanoparticles are prepared by reduction of a coordination compound of Co[II]–cucurbit[6]uril, in which the macrocycle served as a template and supporter. The resulting g-C3N4/Q[6]–Co NPs provided a significant improvement of the photocurrent density (393 μA cm−2 at 1.23 V vs. RHE) and a higher photoconversion efficiency (0.02419%) than the pristine g-C3N4 catalyst. These results reveal that the high visible light absorption of g-C3N4/Q[6]–Co NPs ensures the formation of a large number of photogenerated electron–hole pairs, and therefore the holes are immediately transferred to the g-C3N4 film through the semiconductor–metal interface, inhibiting the charge recombination process and increasing the photocurrent performance. The approach proposed in this study not only provides a new strategy, in which a macrocyclic compound is employed as the template and supporter in the synthetic process of the nanocatalyst, but also opens a new window for the application of g-C3N4 in PEC water splitting.
研究领域:
材料科学
·
纳米技术
·
光电化学
·
催化
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高影响因子
Food Chemistry-X
·
2026
·
IF 9.2
Zan Tan,Fengping Hou,Tingyi Qiao,Nan Dong
The migration of harmful plastic additives with diverse polarities and boiling points from plastic food contact materials (FCMs) poses a risk to human health, necessitating simple and effective analytical methods. Herein, a π-conjugated truxene (Tr) was covalently bonded with cucurbit[6]uril (Q[6]) to afford a novel Q[6]-Tr compound, which was fabricated as both a solid-phase microextraction (SPME) fiber coating and a gas chromatography (GC) stationary phase to establish an integrated SPME-GC system. The proposed method determined 9 plastic additives from 4 categories, showing good linearity (R 2 ≥ 0.9863) over 5–1000 μg/L, low detection limits (0.21–0.45 μg/L), enrichment factors of 13–42, and satisfactory recoveries (70.8–97.5%), with performance superior to commercial counterparts. Practical application quantified BHT migration from takeout containers (2.341 μg/L) and DIBP from containers and plastic bags (2.504 and 4.954 μg/L). This dual-functional Q[6]-Tr system offers an organic solvent-free, universally applicable approach for multiclass additive analysis in FCMs.
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高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2025
·
IF 4.7
Yan-Li Lu,Yue Ma,Xi-Nan Yang,Jie Gao,Xiao-Qian Chen,Xin Xiao,Pei-Hua Ma
In this paper, a crystalline supramolecular organic framework was constructed based on cyclopentanocucurbit[6]uril (CyP 6 Q[6]) and five benzimidazole compounds [2-aminobenzimidazole (G1), 2-methylbenzimidazole (G2), 2-hydroxymethylbenzimidazole (G3), 2-phenylbenzimidazole (G4), 2-(2-pyridyl) -benzimidazole (G5)] through host-guest interaction, with the Single crystal X-ray diffraction analysis showing that CyP 6 Q[6] and Gn(n=1-5) formed 1:1 host-guest inclusion complexes by hydrogen bonding, respectively. The type of substituent (R group) in the guest determines the mode of interaction with CyP6Q[6], where the benzimidazole rings of G1-G4 are encapsulated in the cavity of CyP6Q[6] with the R group located outside its ports, whereas the R group (pyridinyl group) of G5 enters the cavity of CyP6Q[6] with the benzimidazole ring exposed outside its ports. Interestingly, under the ion-dipole interaction, the inclusion complexes form an '8′ shaped supramolecular organic framework by stacking, and due to the different characteristics of the R group and the binding mode, supramolecular channels with different sizes are formed.
研究领域:
超分子化学
·
晶体工程
·
材料科学
·
主客体化学
·
X射线衍射分析
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高影响因子
危险品化学品经营许可证（带存储）