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Aggregate 2024年第2期5卷 482-492页

作者： Shinsuke Segawa Xinwen Ou Tianruo Shen Tomohiro Ryu Yuki Ishii Herman H.Y.Sung Ian D.Williams Ryan T.K.Kwok Ken Onda Kiyoshi Miyata Xuewen He Xiaogang Liu Ben Zhong Tang Translational and Advanced Bioimaging Laboratory Department of Chemical and Biological EngineeringSchool of EngineeringThe Hong Kong University of Science and TechnologyKowloonHong KongChina Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced StudyThe Hong Kong University of Science and TechnologyKowloonHong KongChina Science Mathematics and Technology ClusterSingapore University of Technology and DesignSingaporeSingapore Department of Chemistry Graduate School of ScienceKyushu UniversityNishi-kuFukuokaJapan The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhouJiangsuChina School of Science and Engineering Shenzhen Institute of Aggregate Science and TechnologyThe Chinese University of Hong KongShenzhenGuangdongChina

Fluorescence imaging,a key technique in biological research,frequently utilizes fluorogenic probes for precise imaging in living *** is an effective emission quencher in fluorogenic probe designs,which can be selectively damaged upon bioorthogonal click reactions,leading to considerable emission *** significant efforts to increase the emission enhancement ratio(I_(AC)/I_(BC))of tetrazine-functionalized fluorogenic probes,the influence of molecular aggregation on the emission properties has been largely overlooked in these probe *** this study,we reveal that an ultrahigh I_(AC)/I_(BC)can be realized in the aggregate system when tetrazine is paired with aggregation-induced emission(AIE)*** amplifies its quenching efficiency upon aggregation and drastically reduce background *** click reactions damage tetrazine and trigger significant AIE,leading to considerably enhanced I_(AC)/I_(BC).We further showcase the capability of these ultra-fluorogenic systems in selective imaging of multiple organelles in living *** term this unique fluorogenicity of AIE luminogen-quencher complexes with amplified dark-bright states as“Matthew effect”in aggregate emission,potentially providing a universal approach to attain ultrahigh I_(AC)/I_(BC)in diverse fluorogenic systems.

关键词： aggregation-induced emission bioorthogonal chemistry click chemistry fluorescence imaging tetrazine

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Unconventional assemblies of bisacylhydrazones:The role of water for circularly polarized luminescence

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Aggregate 2022年第5期3卷 185-193页

作者： Hye Jin Cho Dong Yeun Jeong Hwihyun Moon Taewoo Kim You Kyoung Chung Yeongdong Lee Zonghoon Lee Joonsuk Huh Youngmin You Changsik Song Department of Chemistry Sungkyunkwan UniversitySuwonGyeonggi 16419Republic of Korea Division of Chemical Engineering and Materials Science Graduate Program in System Health Science and EngineeringEwha Womans UniversitySeoul 03760Republic of Korea Center for Multidimensional Carbon Materials Institute for Basic Science(IBS)Department of Materials Science and EngineeringUlsan National Institute of Science and Technology(UNIST)Ulsan 44919Republic of Korea

Understanding the precise molecular arrangement of chiral supramolecular polymers is essential not only to comprehend complex superstructures like proteins and DNA but also for the development of next-generation optoelectronic materials,including materials displaying high-performance circularly polarized luminescence(CPL).Herein,we report the first chiral supramolecular polymer systems based on hydrazone–pyridinium conjugates comprising alkyl chains of different lengths,which afforded control of the apparent supramolecular *** supramolecular chirality is governed basically by the remote chiral centers of alkyl chains,helicity inversion was achieved by controlling the conditions under which the hydrazone building blocks underwent aggregation(i.e.,solvent compositions or temperature).More importantly,the addition of water to the system led to aggregationinduced hydrazone deprotonation,which resulted in a completely different selfassembly *** water molecules played an essential role,forming the assembly’s channel-like backbone,around which hydrazone molecules gathered as a result of hydrogen bonding *** co-assembly of an achiral hydrazone luminophore with the given supramolecular polymer system allowed the fabrication of a novel CPL-active hydrazone-based material exhibiting a high maximum value for the photoluminescence dissymmetry factor of -2.6×10^(-2).

关键词： circularly polarized luminescence(CPL) helicity control hydrazone self-assembly structural water supramolecular polymerization

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Intercalation-deintercalation design in MXenes for high-performance supercapacitors

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Nano Research 2022年第4期15卷 3213-3221页

作者： Zhenjiang Li Jun Dai Yiran Li Changlong Sun Alan Meng Renfei Cheng Jian Zhao Minmin Hu Xiaohui Wang School of Materials Science and Engineering Qingdao University of Science and TechnologyQingdao 266061China College of Electromechanical Engineering Qingdao University of Science and TechnologyQingdao 266061China Department of Mechanical Engineering City University of Hong KongHong Kong 999077China State Key Laboratory Base of Eco-chemical Engineering College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

MXene is a new intercalation pseudocapacitive electrode material for supercapacitor *** fast ion diffusion is significantly essential for MXene to achieve excellent electrochemical *** expansion of interlayer void by traditional spontaneous species intercalation always leads to a slight increase in capacitance due to the existence of species sacrificing the smooth diffusion of electrolyte ***,an effective intercalation-deintercalation interlayer design strategy is proposed to help MXene achieve higher *** cation intercalation leads to the expansion of interlayer *** electrochemical cation extraction,intercalated cations are deintercalated mostly,leaving a small number of cations trapped in the interlayer silt and serving as pillars to maintain the interlayer space,offering an open,unobstructed interlayer space for better ion migration and ***,a preferred surface with more-O terminations for redox reaction is created due to the reaction between cations and-OH *** a result,the processed MXene delivers a much improved capacitance compared to that of the original Ti_(3)C_(2)T_(x)electrode(T stands for the surface termination groups,such as-OH,-F,and-O).This study demonstrates an improvement of electrochemical performance of MXene electrodes by controlling the interlayer structure and surface chemistry.

关键词： MXene electrochemical ion intercalation−deintercalation interlayer design supercapacitor energy storage

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Recent progress in perovskite solar cells:material science

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science China Chemistry 2023年第1期66卷 10-64页

作者： Jiang-Yang Shao Dongmei Li Jiangjian Shi Chuang Ma Yousheng Wang Xiaomin Liu Xianyuan Jiang Mengmeng Hao Luozheng Zhang Chang Liu Yiting Jiang Zhenhan Wang Yu-Wu Zhong Shengzhong(Frank)Liu Yaohua Mai Yongsheng Liu Yixin Zhao Zhijun Ning Lianzhou Wang Baomin Xu Lei Meng Zuqiang Bian Ziyi Ge Xiaowei Zhan Jingbi You Yongfang Li Qingbo Meng Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Laboratory for Renewable Energy(CAS) Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologyInstitute for Advanced Energy MaterialsSchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119China Institute of New Energy Technology College of Information Science and TechnologyJinan UniversityGuangzhou 510632China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Physical Science and Technology Shanghai Tech UniversityShanghai 201210China Australian Institute for Bioengineering and Nanotechnology and School of Chemical Engineering The University of QueenslandSt LuciaBrisbaneQLD 4072Australia Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology&EngineeringChinese Academy of SciencesNingbo 315201China Key Laboratory of Polymer Chemistry and Physics of Ministry of Education School of Materials Science and EngineeringPeking UniversityBeijing 100871China Key Laboratory of Semiconductor Materials Science Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China Dalian National Laboratory for Clean Energy Collaborative Innovation Center of Chemistry for Energy Materials(iChEM)Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Key Laboratory of Funct

Perovskite solar cells represent a promising third-generation photovoltaic technology with low fabrication cost and high power conversion *** light of the rapid development of perovskite materials and devices,a systematic survey on the latest advancements covering a broad range of related work is urgently *** review summarizes the recent major advances in the research of perovskite solar cells from a material science *** discussed topics include the devices based on different type of perovskites(organic-inorganic hybrid,all-inorganic,and lead-free perovskite and perovskite quantum dots),the properties of perovskite defects,different type of charge transport materials(organic,polymeric,and inorganic hole transport materials and inorganic and organic electron transport materials),counter electrodes,and interfacial materials used to improve the efficiency and stability of *** discussions focus on the key progresses reported within the recent five ***,the major issues limiting the production of perovskite solar cells and the prospects for the future development of related materials are discussed.

关键词： perovskite solar cells power conversion efficiency perovskite materials hole transport materials electron transport materials counter electrode materials interfacial functional materials defects

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Photocatalytic bio-inspired PDA-RGO/g-C3N4 nanocomposite incorporated PES membrane for removal of environmental antibiotic pollutants

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Journal of chemical Technology and Biotechnology 2024年第6期99卷 1401-1413页

作者： Govardhanan, B. GokulaKrishnan, S.A. Arthanareeswaran, G. Ashok, M. Chen, Yong-Song Taweepreda, W. Membrane Research Laboratory Department of Chemical Engineering National Institute of Technology Tiruchirappalli Tiruchirappalli India New Generation Materials lab Department of Physics National Institute of Technology Tiruchirappalli Tiruchirappalli India Department of Mechanical Engineering and Advanced Institute of Manufacturing with High-tech Innovations National Chung Cheng University Chiayi County Taiwan Polymer Science Program Division of Physical Science Faculty of Science Prince of Songkla University Hat-Yai Thailand

BACKGROUND: Membrane technology makes it more suitable for the treatment of environmental polluted organic wastewater. Membrane fouling is one of the major concerns in commercial membranes. To overcome this issue, photocatalytic nanomaterials are embedded into the membrane to enhance its surface nature and reusability. In this investigation, polydopamine functionalized graphene oxide (PDA-RGO), graphite carbon nitride (g-C3N4) and PDA-RGO/g-C3N4 nanomaterials were incorporated within polyethersulfone membrane fabricated via a phase inversion technique. These as-prepared membranes’ functional groups and surface morphologies were investigated by Fourier transform infrared (FTIR) spectroscopy, atomic force microscopy (AFM) and field emission electron microscopy (FESEM). These as-prepared membranes were investigated for photocatalytic activity under visible-light-driven photodegradation by environmental pollutants such as Rhodamine B (RhB) and Norfloxacin (NOR). RESULTS: Compared with pristine PES membrane, the PDA-RGO/g-C3N4-PES nanocomposite membrane showed higher photocatalytic activity for Rhodamine B 94.6% and Norfloxacin 96.8%, also reached greater water flux 189 L m−2 h−1. Therefore, the bio-inspired nanocomposite-modified PDA-RGO/g-C3N4 photocatalytic membrane could have huge potential in processing environmentally polluted water. CONCLUSIONS: PDA-RGO/g-C3N4-PES nanocomposite membrane improved the membrane hydrophilicity, water flow, anti-fouling performance, rejection studies and photocatalytic degradation than the pristine membrane. The synergistic result of PDA-RGO and g-C3N4 exhibits better photodegradation efficiency of the membrane towards environmental pollutants. © 2024 Society of chemical Industry (SCI). © 2024 Society of chemical Industry (SCI).

关键词： Nanocomposites

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Differing vibrational properties of halide and chalcogenide perovskite semiconductors and impact on optoelectronic performance

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Physical Review materials 2024年第8期8卷 085402页

作者： Kevin Ye Matan Menahem Tommaso Salzillo Florian Knoop Boyang Zhao Shanyuan Niu Olle Hellman Jayakanth Ravichandran R. Jaramillo Omer Yaffe Department of Materials Science and Engineering Department of Chemical and Biological Physics Department of Industrial Chemistry “Toso Montanari” Department of Physics Chemistry and Biology (IFM) Mork Family Department of Chemical Engineering and Materials Science Department of Molecular Chemistry and Material Science Ming Hsieh Department of Electrical and Computer Engineering Core Center of Excellence in NanoImaging (CNI)

We report a comparative study of temperature-dependent photoluminescence and structural dynamics of two perovskite semiconductors, the chalcogenide BaZrS3 and the halide CsPbBr3. These materials have similar crystal structures and direct band gaps, but we find that they have quite distinct optoelectronic and vibrational properties. Both materials exhibit thermally activated nonradiative recombination, but the nonradiative recombination rate in BaZrS3 is four orders of magnitude faster than in CsPbBr3, for the crystals studied here. Raman spectroscopy reveals that the effects of phonon anharmonicity are far more pronounced in CsPbBr3 than in BaZrS3. Further, although both materials feature a large dielectric response due to low-energy polar optical phonons, the phonons in CsPbBr3 are substantially lower in energy than in BaZrS3. Our results suggest that electron-phonon coupling in BaZrS3 is more effective at nonradiative recombination than in CsPbBr3 and that BaZrS3 may also have a substantially higher concentration of nonradiative recombination centers than CsPbBr3. The low defect concentration in CsPbBr3 may be related to the ease of lattice reconfiguration, typified by anharmonic bonding. It remains to be seen to what extent these differences are inherent to the chalcogenide and halide perovskites and to what extent they can be affected by materials processing.

关键词： Electron-phonon coupling Lattice dynamics Photoemission Solar cells Photovoltaic absorbers Photoluminescence Raman spectroscopy

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3D-printed poly-Ε-caprolactone/bioglass and iron disulfide composite materials for hard tissue engineering

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Ceramics International 2025年第16期51卷 22327-22339页

作者： Nicoară, Adrian Ionuț Cocoș, Vlad Chircov, Cristina Trușcă, Roxana Doina Hudiță, Ariana Department of Science and Engineering of Oxide Materials and Nanomaterials Faculty of Chemical Engineering and Biotechnologies National University of Science and Technology Politehnica Bucharest 1-7 Gh. Polizu Bucharest011061 Romania National Research Center for Micro and Nanomaterials National University of Science and Technology Politehnica Bucharest 313 Spl. Independenţei Bucharest060042 Romania Faculty of Engineering in Foreign Languages National University of Science and Technology Politehnica Bucharest 313 Spl. Independenţei Bucharest060042 Romania Department of Biochemistry and Molecular Biology University of Bucharest Bucharest050095 Romania

3D printing has transformed scaffold production by enabling customizable, reproducible structures essential for effective bone tissue engineering. Therefore, the aim of this study was to obtain a series of 3D-printed structures consisting of bioglass (BG), whose bioactive properties support direct bonding with bone via a hydroxyapatite layer, and iron disulfide (FeS2), used in traditional Chinese medicine for promoting bone tissue formation, fracture healing, and pain alleviation. The BG 47S6 was obtained through the sol-gel method, while the iron disulfide nanoparticles were produced via a microwave-assisted solvothermal treatment. The powders were characterized through X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), Raman spectroscopy, and scanning electron microscopy (SEM). The diffractogram for the 47S6 BG demonstrated the crystallization of SiO2 and C2S phases alongside the typical amorphous phase of BG, while the iron disulfide nanoparticles displayed both pyrite (cubic) and marcasite (orthorhombic) mineral phases. The FT-IR spectrum of 47S6 BG showed characteristic bands corresponding to Si–O–Si and P–O. SEM images revealed irregular particle aggregates with an interconnected structure, while the FeS2 particles appeared agglomerated, suggesting the coalescence of multiple crystallites during synthesis. Subsequently, the powders were mixed in varying proportions (100, 99, 97, and 95 wt% BG) and incorporated into a polycaprolactone (PCL) solution to create pastes for 3D printing. The scaffolds were printed with different parameters to optimize string thickness and porosity, and their morphology, mechanical properties, bioactivity, and biocompatibility were evaluated. Results demonstrated uniform scaffold fabrication and enhanced bioactivity. Notably, the addition of FeS2 improved mechanical strength by preventing scaffold rupture, increased cell viability, and reduced oxidative stress, as confirmed by MTT and LDH assays using the hFOB

关键词： Fourier transform infrared spectroscopy

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Dynamic-static coupled sensing of trace biomarkers by molecularly imprinted metal-organic frameworks

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science China Chemistry 2023年第12期66卷 3511-3517页

作者： Hui Min Zongsu Han Tiankai Sun Kunyu Wang Jun Xu Peiyu Yao Sihai Yang Peng Cheng Wei Shi Department of Chemistry Key Laboratory of Advanced Energy Materials Chemistry(MOE)and Frontiers Science Center for New Organic MatterCollege of ChemistryNankai UniversityTianjin 300071China School of Materials Science and Engineering&National Institute for Advanced Materials Center for Rare Earth and Inorganic Functional Materials Tianjin Key Lab for Rare Earth Materials and ApplicationsNankai UniversityTianjin 300350China Department of Emergency Tianjin Union Medical CenterTianjin 300121China Department of Chemistry University of ManchesterManchester M139PLUK College of Chemistry and Molecular Engineering Beijing National Laboratory for Molecular SciencesPeking UniversityBeijing 100871China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China

Accommodating target analytes within the pores of metal-organic frameworks(MOFs)to improve the sensing performance is an important but challenging ***,we report a novel molecular imprinting strategy to create target recognition sites in a tailored multicomponent MOF with the inter-ligand synergistic antenna effect to lanthanide ions,enabling selective recognition of trace biomarkers,which is critical to the early diagnosis of age-related diseases in blood samples with high sensitivity and ultralow limit of detection(LOD)of 69 nmol L^(-1).Compared with MOF-based sensors without imprinted recognition sites,the significantly enhanced sensing performance(both sensitivity and LOD)was attributed to a dynamic-static coupled sensing mechanism:the dynamic interactions involve concentrating the trace biomarkers at the imprinted recognition sites to enhance the sensing performance at ultralow concentration,and the static interactions are derived from electron/energy exchange between the molecularly imprinted MOF and the biomarker to govern the sensing *** work establishes a new molecular imprinting strategy to attain advanced materials for sensing trace bio-analytes.

关键词： molecularly imprinted metal-organic frameworks dynamic-static coupled sensing biomarker recognition

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Mitigating the Reconstruction of Metal Sulfides for Ultrastable Oxygen Evolution at High Current Density

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CCS Chemistry 2024年第1期6卷 137-148页

作者： Shuai Niu Tang Tang Yuanju Qu Yuyun Chen Hao Luo Hui Pan Wen-Jie Jiang Jianan Zhang Jin-Song Hu Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Nanostructure and NanotechnologyInstitute of ChemistryChinese Academy of SciencesBeijing 100190 Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoMacao SAR 999078 Department of Chemical Engineering University of MelbourneParkvilleVictoria 3010 College of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001 School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049 Dalian National Laboratory for Clean Energy Dalian 116023

Metal sulfides are emerging highly active electrocatalysts for the oxygen evolution reaction(OER),but still suffer from the instability caused by their inevitable reconstruction,especially at industrial-level current ***,it is discovered that Fe-incorporated Ni3S2 nanowires can deliver extraordinary durability with an ultralow potential degradation rate of 0.006 mV/h in alkaline electrolytes made with fresh water and seawater at a benchmark of 500 mA cm^(-2) while meeting the industrial activity requirement for overpotential less than 300 mV(290 mV).Systematic experiments and theoretical simulations suggest that after forming the S-doped NiFeOOH shell to boost intrinsic activity,Fe incorporation effectivelymitigates the reconstruction of the Ni_(3)S_(2) nanowire core by restraining Ni oxidation and S dissolution,justifying the *** work highlights the significance of circumventing reconstruction and provides a strategy to explore practical chalcogenides-based OER electrocatalysts.

关键词： oxygen evolution reaction sulfur-doped NiFeOOH NiFe sulfides nanowire ultrastable high current density

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Spin selectivity of chiral mesostructured diamagnetic BiOBr films

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Nano Research 2023年第8期16卷 11444-11449页

作者： Kun Ding Jing Ai Hao Chen Zhibei Qu Peizhao Liu Lu Han Shunai Che Yingying Duan Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power Shanghai University of Electric PowerShanghai 200090China School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesState Key Laboratory of Matrix CompositeShanghai Key Laboratory for Molecular Engineering of Chiral DrugsShanghai Jiao Tong University800 Dongchuan RoadShanghai 200240China School of Chemical Science and Engineering Tongji University1239 Siping RoadShanghai 200092China Department of Medicinal Chemistry School of PharmacyFudan University826 Zhangheng RoadShanghai 201203China

The chirality-induced spin selectivity(CISS)has been found in the antiferromagnetic and paramagnetic chiral inorganic materials with unpaired electrons,while rarely reported in the spin-paired diamagnetic inorganic materials with spin-pairing ***,we report the CISS in the spin-paired diamagnetic BiOBr endowed with three levels of chiral *** mesostructured BiOBr films(CMBFs)were fabricated through a sugar alcohol-induced hydrothermal *** antipodal CMBFs exhibited chirality-dependent,magnetic field-independent magnetic circular dichroism(MCD)signals,which indicates the existence of spin *** spin selectivity of CMBFs was speculated to be the result of the competing effect between the externally applied magnetic field and the effective magnetic field arisen from the spin electron motions in chiral *** chirality-induced effective magnetic field acts on the magnetic moment of electrons,potentially overcoming the spin-pairing energy and producing opposite energy changes for spin-down and spin-up electrons.

关键词： chiral mesostructures diamagnetic material chiral-induced spin selectivity(CISS) magnetic circular dichroism(MCD)

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