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Coating colloidal particles with a well-defined polymer layer by surface-initiated photoinduced polymerization-induced self-assembly and the subsequent seeded polymerization

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Chinese Chemical Letters 2025年第2期36卷 213-217页

作者： Bing Niu Honggao Huang Liwei Luo Li Zhang Jianbo Tan Department of Polymeric Materials and engineering School of Materials and EnergyGuangdong University of Technology Guangdong Provincial Key Laboratory of Functional soft Condensed Matter

Core-shell colloidal particles with a polymer layer have broad applications in different ***,we developed a two-step method combining aqueous surface-initiated photoinduced polymerization-induced self-assembly and photoinduced seeded reversible addition-fragmentation chain transfer (RAFT) polymerization to prepare a diverse set of core-shell colloidal particles with a well-defined polymer *** compositions,structures,and thicknesses of polymer layers could be conveniently regulated by using different types of monomers and feed[monomer]/[chain transfer agent]ratios during seeded RAFT polymerization.

关键词： Core-shell colloidal particles Photoinduced polymerization-induced self-assembly RAFT polymerization Seeded polymerization Surface-initiated polymerization

On load dependence of detachment rate of kinesin motor

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Chinese Physics B 2025年第1期34卷 498-505页

作者： Xiao-Xuan Shi Yao Wang Yu-Ru Liu Ping Xie School of Pharmaceutical engineering Chongqing Chemical Industry Vocational CollegeChongqing 401220China Laboratory of soft Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China

Kinesin is an archetypal microtubule-based molecular motor that can generate force to transport cargo in cells. The load dependence of the detachment rate is an important factor of the kinesin motor, the determination of which is critically related to the chemomechanical coupling mechanism of the motor. Here, we use three models for the load dependence of the detachment rate of the kinesin motor to study theoretically and numerically the maximal force generated and microtubuleattachment duration of the motor. By comparing the theoretical and numerical results with the available experimental data,we show that only one model can explain well the available experimental data, indicating that only this model can be applicable to the kinesin motor.

关键词： kinesin detachment rate generated force chemomechanical coupling mechanism optical trapping

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Transforming waste particles into valuable adsorbents via amyloid-mediated molecular engineering

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Science China Chemistry 2025年第1期68卷 317-328页

作者： Qingmin Yang Jian Zhao Yujia Zhang Xingyu Zhou Hao Ren Bowen Hu Zhongli Lei Lixin Chen Peng Yang Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi’an 710119China School of Material and Chemical engineering Bengbu UniversityBengbu 233030China Anhui Provincial engineering Laboratory of Silicon-Based Materials Bengbu 233030China Xi’an Key Laboratory of Polymeric soft Matter School of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi’an 710119China International Joint Research Center on Functional Fiber and soft Smart Textile School of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi’an 710119China School of Chemistry and Chemical engineering Northwestern Polytechnical UniversityXi’an 710129China

The high-value utilization of industrial solid waste using a facile and eco-friendly process is of great interest and significance in reducing environmental pollution and developing a green circular ***,we propose an amyloid-mediated molecular engineering strategy to transform particulate waste into valuable adsorbents for metal *** method has the advantage of aqueous solution fabrication under mild conditions without the use of high-temperature hydrothermal methods and toxic chemical ***-mediated molecular engineering manipulates the phase transition of bovine serum albumin(BSA)on particulate waste surfaces,resulting in a remarkable~3.1 times improvement in the adsorption capacity of fly ash,a typical industrial solid waste for gold ions after modification with the phase-transitioned BSA(PTB).The resultant adsorption ability was 69–1,980 times higher than those of conventional and emerging adsorbent materials such as ion exchange resins,activated carbon(AC),covalent organic frameworks(COFs),and metal-organic frameworks(MOFs).We further demonstrated the application of our PTB-modified materials in the recovery of precious metals from low-grade gold ore and electronic waste ***,this strategy could increase the value of waste materials nearly 27 *** addition,this method is generally extendable to other conventional industrial adsorbents such as resin,clay,and Al_(2)O_(3),and enhances their adsorption capabilities at least ***,this work provides a simple and green approach for improving the adsorption performance of solid particles,and is expected to develop into a universal strategy for transforming waste particles into high-value-added products.

关键词： amyloid-like protein aggregates surface engineering fly ash solid waste adsorption

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In-situ liquid-phase transmission electron microscopy for two-dimensional energy materials

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Science China Chemistry 2025年第2期68卷 414-429页

作者： Junyu Zhang Liangping Xiao Mi Lu School of Materials Science and engineering Xiamen University of TechnologyXiamen 361024China Instrumental Analysis Center Laboratory and Equipment Management DepartmentHuaqiao UniversityXiamen 361021China Department of Physics Research Institute for Biomimetics and Soft MatterFujian Provincial Key Laboratory for Soft Functional MaterialsJiujiang Research InstituteXiamen UniversityXiamen 361005China

Two-dimensional(2D)materials are vital for the development of advanced materials in the next-generation energy conversion and storage ***-situ liquid-phase transmission electron microscopy(LP-TEM)acts as a powerful tool for characterizing the dynamic evolution of materials under work condition in real time and in ***,this mini-review highlights the considerable advances in the utilization of in-situ LP-TEM for studying the physical and chemical process dynamics of 2D materials,such as their nucleation growth and phase *** electrocatalytic water splitting reactions and CO_(2) electroreduction of 2D energy materials are *** underlying electrochemical reaction mechanisms of the 2D electrode materials in rechargeable batteries are discussed and ***,the current challenges and perspectives for future research are *** min-review aims to inspire and stimulate further innovation and encourage the broader adoption of LP-TEM in exploring the fascinating dynamics of 2D energy materials.

关键词： two-dimensional(2D)materials liquid-phase transmission electron microscopy electrochemical reaction electrode materials

Novel photoresponsive dinuclear nickel catalysts for ethylene (co)polymerization

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Science China Chemistry 2025年第2期68卷 714-722页

作者： Chenlong Nan Tong Pang Jiaxing Zhao Lijia Fan Chen Zou Xin-Qi Hao Mao-Ping Song Jun-Fang Gong Changle Chen Hui Jiang College of Chemistry Pingyuan LaboratoryZhengzhou UniversityZhengzhou 450001China CAS Key Laboratory of soft Matter Chemistry Department of Polymer Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China

Compared with the conventional strategies of electronic and/or steric perturbation,catalytic olefin polymerization modulated by light irradiation or metal-metal cooperativity effect is a fascinating challenge that attracts considerable attention in the academic *** this context,we design a strategy that could employ both effects to influence the polymerization *** dinuclear salicylaldimine andα-imino-ketone nickel complexes bearing a stiff-stilbene bridge were prepared,which could transfer between(E)-isomers and(Z)-isomers under ultraviolet *** isomerization can tune the electronic,steric and metal-metal cooperativity effects of the nickel *** this way,the catalytic activity,as well as polymer microstructures including molecular weight and branching density can be modulated in ethylene polymerization and copolymerization *** strategy is generally applicable to other olefin polymerization catalytic systems and other types of transition metal mediated catalysis.

关键词： photoresponsive dinuclear catalyst nickel(II) polar monomer olefin copolymerization

Sunlight-induced Permanent Hair Dyeing

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Chinese Journal of Polymer Science 2025年第2期43卷 261-270页

作者： Ting Zhang Bo Liang Jian-Hua Zhang Lei Yang Jun-Fei Hua Yi-Wen Li College of Polymer Science and engineering State Key Laboratoryof Polymer Materials EngineeringSichuan UniversityChengdu 60065China Schoolof Materials Science and engineering Hubei University of Automotive TechnologyShiyan 442002China School of Emergent soft Matter South China University of TechnologyGuangzhou 510640China

Hair coloring has emerged as an integral part of the cosmetic industry,particularly in response to the increasing global aging *** natural melanin analog,polydopamine(PDA),has garnered considerable attention as an eco-friendly hair dye,and several kinds of polymerization ways of dopamine(DA)have been proposed including alkali catalysis,metal ion catalysis,strong oxidants,and enzyme-mediated oxidation reactions and *** the controllability of polymerization and potential toxicity of involved metal ions are still in *** by the photoprotective mechanism in human skin,we have developed the melanin-inspired hair dyeing strategy that allowed for the in situ oxidative polymerization of DA under ultraviolet(UV)*** polymerization was triggered by photobase generators(PBGs),a class of compounds that produced organic bases upon UV and sunlight *** resulting hair showed an adjustable color from light brown to black by tuning the ratio of DA and PBG(DA@PBG),the concentration of DA,and light exposure *** dyed hairs showed excellent washing resistance and superior anti-static ***,Hair Color Spray DA@PBG also demonstrated a desirable hair dyeing effect and excellent biosecurity by simply spraying it on the hair under *** novel sunlight-induced method provided a new direction towards the preparation of natural hair dyes and could promote the development of green and safe hair dyes in colorful and brilliant artistic-grade hair coloring.

关键词： Polydopamine Melanin Polymerization Hair dye Photo-initiation

Recent advancements of nonlinear dynamics in mode coupled microresonators: a review

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Applied Mathematics and Mechanics(English Edition) 2025年第2期46卷 209-232页

作者： Xuefeng WANG Zhan SHI Qiqi YANG Yuzhi CHEN Xueyong WEI Ronghua HUAN Department of engineering Mechanics MIIT Key Laboratory of Dynamics and Control of Complex Systems Northwestern Polytechnical University Department of Mechanics Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province Zhejiang University State Key Laboratory for Manufacturing Systems engineering Xi'an Jiaotong University

Due to scale effects, micromechanical resonators offer an excellent platform for investigating the intrinsic mechanisms of nonlinear dynamical phenomena and their potential applications. This review focuses on mode-coupled micromechanical resonators,highlighting the latest advancements in four key areas: internal resonance, synchronization, frequency combs, and mode localization. The origin, development, and potential applications of each of these dynamic phenomena within mode-coupled micromechanical systems are investigated, with the goal of inspiring new ideas and directions for researchers in this field.

关键词： mode coupling micro-electro-mechanical system (MEMS) resonator nonlinear dynamics O32

Fe3+ ion quantification with reusable bioinspired nanopores

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Chinese Chemical Letters 2025年第2期36卷 207-212页

作者： Yanqiong Wang Yaqi Hou Fengwei Huo Xu Hou Institute of Flexible Electronics (IFE Future Technologies) Xiang’an Campus Xiamen University State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Institute of Artificial Intelligence Xiamen University Department of Physics Research Institute for Biomimetics and Soft Matter Fujian Provincial Key Laboratory for Soft Materials Research Jiujiang Research Institute College of Physical Science and Technology Xiamen University Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM) engineering Research Center of Electrochemical Technologies of Ministry of Education Xiamen University

Excessive Fe3+ion concentrations in wastewater pose a long-standing threat to human *** low-cost,high-efficiency quantification of Fe3+ion concentration in unknown solutions can guide environmental management decisions and optimize water treatment *** this study,by leveraging the rapid,real-time detection capabilities of nanopores and the specific chemical binding affinity of tannic acid to Fe3+,a linear relationship between the ion current and Fe3+ion concentration was *** this linear relationship,quantification of Fe3+ion concentration in unknown solutions was ***,ethylenediaminetetraacetic acid disodium salt was employed to displace Fe3+from the nanopores,allowing them to be restored to their initial conditions and reused for Fe3+ion *** reusable bioinspired nanopores remain functional over 330 days of *** recycling capability and the long-term stability of the nanopores contribute to a significant reduction in *** study provides a strategy for the quantification of unknown Fe3+concentration using nanopores,with potential applications in environmental assessment,health monitoring,and so forth.

关键词： Bioinspired nanopores Chemical binding affinity Fe3+ ion quantification Reusability Tannic acid

Some fundamental issues in buoyancy-driven flows with implications for geophysical and astrophysical systems

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Acta Mechanica Sinica 2025年第1期41卷 1-21页

作者： Ke-Qing Xia Kai Leong Chong Guang-Yu Ding Lu Zhang Center for Complex Flows and soft Matter Research Southern University of Science and TechnologyShenzhen 518055China Department of Mechanics and Aerospace engineering Southern University of Science and TechnologyShenzhen 518055China Shanghai Key Laboratory of Mechanics in Energy engineering Shanghai Institute of Applied Mathematics and MechanicsSchool of Mechanics and Engineering ScienceShanghai UniversityShanghai 200072China

Buoyancy-driven flows are prevalent in a wide range of geophysical and astrophysical systems. In this review, we focus on threepivotal effects that significantly influence the dynamics and transport properties of buoyancy-driven flows and may have impli-cations for natural systems. These effects pertain to the role of boundary conditions, the impact of rotation, and the effect offinite size. Boundary conditions represent how the fluid flow interacts with different kinds of surfaces. Rotation, as the Earth’srotation in geophysical systems or the whirling of astrophysical systems, introduces Coriolis and centrifugal forces, leading tothe profound vortical structure and distinct transport property. Finite size, representing geometrical constraints, influences thebehavior of buoyancy-driven flows across varying geometrical settings. This review aims to provide a holistic understanding ofthe intricate interplay of these factors, offering insights into the complex natural phenomena from the perspectives of the threeeffects.

关键词： Buoyancy-driven flows Geophysical turbulence Rayleigh-B´enard convection