Wenjuan Zhou

Beijing University of Technology

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Chao Lu

Beijing University of Chemical Technology

Weijiang Guan

Beijing University of Chemical Technology

Martien A. Cohen Stuart

State Key Laboratory of Chemical Engineering

Vitaly V. Ordomsky

Université de Lille

Junyou Wang

State Key Laboratory of Chemical Engineering

Xuhong Guo

East China University of Science and Technology

Laurent Bonneviot

Université Claude Bernard Lyon 1

Peng Ding

China Geological Survey

Belén Albela

Laboratoire de Chimie

Jiahua Wang

Huazhong University of Science and Technology

Cooperative Institutions

Centre National de la Recherche Scientifique

Shandong University

Chinese Academy of Sciences

State Key Laboratory of Chemical Engineering

East China University of Science and Technology

Shanghai Jiao Tong University

Unité de catalyse et de chimie du solide de Lille

Jiangsu University of Technology

Beijing University of Chemical Technology

Tsinghua University

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Functional Polyion Complex Vesicles Enabled by Supramolecular Reversible Coordination Polyelectrolytes

Angewandte Chemie International Edition (2019)

Wenjuan Zhou Jiahua Wang Peng Ding Xuhong Guo Martien A. Cohen Stuart

Reported here is a new class of PICsomes (vesicles formed by polyelectrolyte complexation) in which the anionic/neutral diblock copolymer is replaced by an anionic, reversible, supramolecular polyelectrolyte based on metal-ligand coordination. This supramolecular polyelectrolyte forms exclusively inside the wall of the assembly, and therefore self-adjusts its length to that of the cationic block provided. Moreover, the supramolecular coordination polyelectrolytes introduce new and tunable properties and functions associated with the specific metal. As a proof-of-concept Mn-based PICsomes were prepared and display high magnetic relaxivity, as well as enhanced contrast in in vitro magnetic resonance imaging tests. The simplicity of our approach, together with the new functions derived from the metal ions, demonstrates a robust strategy for the preparation of a variety of PICsomes with well-defined and tunable structures and properties.

Cationic polymerization

10.1002/anie.201903513

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Citations (33)

Advances in nanosensors for cardiovascular disease detection

Life Sciences (2022)

Xiaofang Tang Yaping Zhu Weijiang Guan Wenjuan Zhou Peifa Wei

Nanosensor

10.1016/j.lfs.2022.120733

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Citations (26)

Casein–Tb–Ti3C2 quantum dots ratiometric fluorescence probe for the detection of ciprofloxacin

Research Square (Research Square) (2024)

Chong Wang Huixin Wang Qingting Ni Wenjuan Zhou Dan Liu

Abstract The development of a rapid and sensitive method for the detection of ciprofloxacin is crucial to ensure human health and safeguard the ecological environment. The present study demonstrates the synthesis of water-stable ratiometric fluorescence probe casein–Tb–Ti₃C₂ quantum dots (casein–Tb–Ti₃C₂ QDs) for precise detection of ciprofloxacin, based on the principle that ciprofloxacin effectively coordinates with lanthanide metal to enhance the fluorescence signal. In this approach, the I₅₄₃ to I₄₄₀ ratio was utilized as an indicator for monitoring changes in ciprofloxacin concentration. The ratiometric fluorescence probe demonstrated excellent linearity across a concentration range of 2–800 µM and exhibited high sensitivity, achieving a detection limit of 1.81 µM for ciprofloxacin. Furthermore, the ratiometric fluorescence probe was successfully employed for the detection of ciprofloxacin in milk and pork samples, achieving recoveries that ranged from 71.23–102.22%. Due to the advantages of high sensitivity and favorable selectivity, the potential of utilizing the ratiometric fluorescence probe for practical applications in ciprofloxacin detection.

Quinoline

10.21203/rs.3.rs-5720179/v1

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Active sites behavior on Ru@MIL-101(Cr) catalysts to direct alcohol to acetals conversion, an in situ FT-IR study of n-butanol and butanal

Journal of Catalysis (2022)

Liang Zhu Jerry Pui Ho Li Yang Liu Junyu Lang Songwei Zhang

n-Butanol

Alcohol Oxidation

10.1016/j.jcat.2022.11.014

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Preparation of Cysteine‐Functionalized Fe₃O₄ Magnetic Nanoparticles for Determination of Cu²⁺

ChemistrySelect (2021)

Dan Liu He‐Ping Tan Lili Meng Hai-Lang Jia Wenjuan Zhou

Abstract Cysteine‐functionalized Fe 3 O 4 magnetic nanoparticles were synthesized by thiol‐ene click reaction and characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier‐transform infrared spectroscopy (FT‐IR), X‐ray diffraction spectrometry (XRD), thermal gravimetric analysis (TGA), vibrating sample magnetometer (VSM), X‐ray photoelectron spectroscopy (XPS), specific surface area (BET) analysis and pore size distribution analysis. The obtained magnetic materials were employed as a magnetic solid phase extraction adsorbent combined with inductively coupled plasma‐atomic emission spectrometry (ICP‐AES) for determination of Cu 2+ . Several parameters affecting extraction efficiency, including eluent concentration, adsorption time, adsorbent amounts, and sample pH were investigated. Under the optimized conditions, the method was validated. Within the concentration range of 0.01–20 μg mL −1 , The limit of detection (LOD) and the limit of quantification (LOQ) were determined to be 0.002 μg mL −1 and 0.007 μg mL −1 , respectively. The adsorption percentage of Cu 2+ ions remained above 87.0 % when the adsorption‐desorption data of Cu 2+ ions through three cycles of the successive adsorption and desorption process. The results show that a reliable and rapid method was established for determination of Cu 2+ ions.

Thermogravimetric analysis

10.1002/slct.202100919

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Transcriptomics insights into glutamine on repairing of histamine-induced Yak rumen epithelial cells barrier damage in vitro

BMC Genomics (2025)

Xiaohong Zhang Rui Hu Zhisheng Wang Junmei Wang Ziqi Yue

Glutamine (Gln) plays a pivotal role in maintaining the integrity of the rumen epithelial barrier in mammals. This study aimed to investigate the effects of Gln on histamine-induced barrier damage in yak rumen epithelial cells (YRECs). RT-qPCR analysis revealed a significant decrease in the mRNA expression of tight junction proteins (ZO-1, JAM-A, Claudin-1, and Claudin-4) following 24-hour exposure to 20 µM histamine (HIS group) (P < 0.05). In the subsequent experiment, YRECs were first treated with 20 µM histamine for 24 h, followed by 8 mM glutamine for 12 h (HG group). Gln treatment reversed the histamine-induced downregulation of both mRNA and protein levels of tight junction proteins and restored the distribution of ZO-1 at the cell membrane. Transcriptome analysis revealed that co-regulated differentially expressed genes were primarily involved in the mitogen-activated protein kinase (MAPK) signaling pathway and apoptosis. These findings were further corroborated by RT-qPCR, Western blot, and flow cytometry analyses. To determine whether glutamine regulates cell barrier function through the p38 MAPK signaling pathway, 20 µM Skatole, a p38 MAPK agonist, was introduced (SK group). The results showed a significant increase in the p-p38/p38 ratio and a marked decrease in the mRNA and protein expression of tight junction proteins in the SK group compared to the HG group (P < 0.05). Glutamine mitigates histamine-induced barrier damage in YRECs through the p38 MAPK signaling pathway and apoptosis regulation.

Barrier function

10.1186/s12864-025-11383-6

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Micelle-Mediated Chemiluminescence as an Indicator for Micellar Transitions

Analytical Chemistry (2019)

Meiting Xie Zhuoyong Zhang Weijiang Guan Wenjuan Zhou Chao Lu

The structural phase of micelles plays an important role in controlling the micellar performance. Despite the great developments of some advanced characterization techniques, it remains challenging to achieve fast and sensitive determination of micellar transitions in solution. Herein, a novel indicator system for micellar transitions was developed based on the micelle-mediated peroxyoxalate chemiluminescence that showed a sensitive response toward the changes of micellar morphologies. A peroxyoxalate derivative and a fluorophore were first coassembled into the hydrophobic cavities of micelles of the typical cationic surfactant cetyltrimethylammonium bromide (CTAB). A strong and rapidly falling chemiluminescence response was exhibited in spherical micelles as a result of the loose arrangement of CTAB molecules. By contrast, rodlike or wormlike micelles transformed from spherical micelles could induce a compact arrangement of CTAB molecules, leading to a weak chemiluminescence emission with a slow decay rate. The practicability and universality of the chemiluminescent indicator were demonstrated by determining the micellar transitions in a variety of surfactant solutions (ionic, nonionic, and polymeric). These findings open attractive perspectives for the practice of chemiluminescence technique in micelle characterization.

Cationic polymerization

Peroxyoxalate

Micellar solutions

10.1021/acs.analchem.8b03774

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Citations (14)

Direct aerobic oxidation of monoalcohol and diols to acetals using tandem Ru@MOF catalysts

Nano Research (2020)

Songwei Zhang Jerry Pui Ho Li Jingpeng Zhao Dan Wu Biao Yuan

Alcohol Oxidation

Tandem

10.1007/s12274-020-2651-x

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Amphiphilic Titanosilicates as Pickering Interfacial Catalysts for Liquid-Phase Oxidation Reactions

The Journal of Physical Chemistry C (2015)

Yulin Yang Wenjuan Zhou Armin Liebens Jean‐Marc Clacens Marc Pera‐Titus

Monodispersed amphiphilic zeolite/mesosilica composite material TS-1@KCC-1 (TK), which could stabilize Pickering emulsions for the benzene/H2O2 system, has been synthesized, and its physicochemical properties have been investigated in detail. The amphiphilic TK catalyst displayed a higher catalytic activity under Pickering interfacial catalysis (PIC) than under phase-boundary catalysis (PBC) and conventional reaction conditions in the hydroxylation of benzene by hydrogen peroxide without cosolvent and under static conditions. Under optimized conditions, a TS-1@KCC-1 catalyst grafted with octyl chains (2.42 wt %) could afford an interfacial activity of 1.1 mol (Ti-mol)−1. Moreover, PIC reaction conditions exhibited an excellent thermal stability and good reusability.

Hydroxylation

Pickering emulsion

Thermal Stability

Reusability

10.1021/acs.jpcc.5b07175

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Citations (34)

TEMPO-Ru-BEA Composite Material for the Selective Oxidation of Alcohols to Aldehydes

ACS Catalysis (2022)

Jianying Deng Karima Ben Tayeb Chunyang Dong Pardis Simon Maya Marinova

The selective aerobic oxidation of alcohols to aldehydes is an important industrial challenge due to the easy further overoxidation of these products to acids and esters. The most common industrial methods require organic radicals such as 2,2,6,6,-tetramethylpiperidine-1-oxyl (TEMPO) for the selective conversion of alcohols to carbonyl compounds with the formation of TEMPOH, which can be regenerated back to TEMPO by oxygen over metal complexes. The high cost and difficulties related to the separation of complexes prompted us to develop heterogeneous catalysts by coordinating TEMPO over acid sites in zeolite BEA with encapsulated RuO2 nanoparticles. The catalyst demonstrates excellent activity, selectivity, and stability for the oxidation of alcohols to aldehydes. The analysis of the reaction mechanism confirms the activation of alcohols by TEMPO and the subsequent regeneration of TEMPOH by RuO2.

Alcohol Oxidation

10.1021/acscatal.2c01554

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Citations (13)