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Chinese Journal of Chemistry 2024年第16期42卷 1895-1900页

作者： Qiong-Yan Hong Bin Huang Meng-Xiang Wu Lin Xu Xiao-Li Zhao Xueliang Shi Hai-Bo Yang Shanghai Key Laboratory of Green Chemistry and Chemical Processes State Key Laboratory of Petroleum Molecular&Process EngineeringSchool of Chemistry and Molecular EngineeringEast China Normal University3663 N.Zhongshan RoadShanghai 200062China

A novel macrocycle based on conformation-adaptive and electron-rich dihydrophenazine was designed and *** the one hand,the macrocycle showed host-guest interactions with tetracyanoquinodimethane(TCNQ)driving by charge transfer interaction between ***,host-guest complexation was accompanied by fluorescence quenching and conformational change of the *** the other hand,the oxidation of the macrocycle resulted in its diradical cation analogue and induced the release of the guest molecule TCNQ,thereby accomplishing reversible binding ***,this work wellillustrates the chemical and structural versatility of dihydrophenazine in the synthesis of macrocycles and their host-guest chemistry.

关键词： Dihydrophenazine Macrocycle Conformational adaptation redox-active Host-guest interactions Charge transfer interaction Organic radical Supramolecular chemistry

redox-active humics support interspecies syntrophy and shift microbial community

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Science China(Technological Sciences) 2019年第10期62卷 1695-1702页

作者： ZHENG Yue KAPPLER Andreas XIAO Yong YANG Fan MAHADEVA Gurumurthy Dummi ZHAO Feng CAS Key Laboratory of Urban Pollutant Conversion Institute of Urban EnvironmentChinese Academy of SciencesXiamen361021China University of Chinese Academy of Sciences Beijing100049China Geomicrobiology Center for Applied GeosciencesUniversity of TuebingenTuebingen72076Germany

The network of microbial electron transfer can establish a syntrophic association of microbes by connecting interspecies metabolisms, and a variety of redox-active shuttles in environment have been proved to accelerate the electron flow in a microbial community. Using humic substances as models, we investigated how different redox-active shuttles with different electrochemical properties influence interspecies electron transfer, and affect the shift of microbial communities. The co-culture of two species was constructed with supplements of humics, and the electron transfer between these two strains was found to be linked by humic acid with a wider window of redox potential and multi-peaks of redox reactions. Based on the shift of microbial composition, the humic substances with a wide potential window and multi-peaks of redox reactions for accepting and donating electrons could increase the biodiversity(Chao 1 and phylogenetic diversity) with a large extent. The mechanism by which redox-active shuttles mediate the microbial electron transfer network could facilitate our understanding of syntrophic interactions between microbes.

关键词： humic acid fulvic acid redox-active shuttle microbial diversity interspecies electron transfer

Polydopamine-based redox-active separators for lithium-ion batteries

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Journal of Materiomics 2019年第2期5卷 204-213页

作者： Ruijun Pan Zhaohui Wang Rui Sun Jonas Lindh Kristina Edstrom Maria Strømme Leif Nyholm Department of Chemistry-Ångstr€om Laboratory Uppsala UniversityBox 538SE-75121UppsalaSweden Nanotechnology and Functional Materials Department of Engineering SciencesTheÅngstr€om LaboratoryUppsala UniversityBox 534SE-75121UppsalaSweden

The performance of lithium-ion batteries(LIBs)can be effectively enhanced with functionalized ***,it is demonstrated that polydopamine-based redox-active(PRA)separators can provide additional capacity to that of typical anode materials,increase the volumetric capacity of the cell,as well as,decrease the cell resistance to yield an improved performance at higher cycling *** PRA separators,which are composed of a 2 mm thick electrically insulating nanocellulose fiber(NCF)layer and an 18 mm thick polydopamine(PDA)and carbon nanotube(CNT)containing redox-active layer,are readily produced using a facile paper-making *** PRA separators are also easily wettable by commonly employed electrolytes(***40)and exhibit a high dimensional *** addition,the pore structure endows the PRA separator with a high ionic conductivity(i.e.1.06 mS cm^(-1))that increases the rate performance of the *** to the presence of the redox-active layer,Li_(4)Ti_(5)O_(12)(LTO)half-cells containing PRA separator were found to exhibit significantly higher capacities than the corresponding cells containing commercial *** results clearly show that the implementation of this type of redox-active separators constitutes a straightforward and effective way to increase the energy and power densities of LIBs.

关键词： Lithium-ion battery Separator Cellulose Polydopamine redox-active

Synthesis and characterization of novel redox-active percec-type dendrons

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Chinese Chemical Letters 2012年第4期23卷 438-441页

作者： Zhi Yu Cheng Bi Ye Ren Rui Liu Xue Yi Chang Zhen Tong Research Institute of Materials Science South China University of TechnologyGuangzhou 510640China

Three novel redox-active percec-type dendrons were synthesized by mucleophilic substitution reaction of 11-bromoundecyl ferrocene and substituted *** the resultant ferrocenyl-modified dendrons were confirmed through FT-IR,NMR,and elemental analysis,***,the thermal properties and electrochemical behavior of these dendrons were monitored with thermogravimetry analysis（TG）,differential scanning calorimetry（DSC）,polarized optical microscope（POM）,and cyclic voltammetry（CV）. Abound phase behavior and reversible electrochemical redox reaction process in the DMF solution of these dendrons was observed.

关键词： redox-active Percec-type dendrons Ferrocenyl group Building block

Skeleton Engineering of Isostructural 2D Covalent Organic Frameworks: Orthoquinone redox-active Sites Enhanced Energy Storage

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CCS Chemistry 2021年第2期3卷 696-706页

作者： Miao Li Jingjuan Liu Yusen Li Guolong Xing Xiang Yu Chengxin Peng Long Chen Department of Chemistry Institute of Molecular Plusand Tianjin Key Laboratory of Molecular Optoelectronic ScienceTianjin UniversityTianjin 300072 Analytical and Testing Center Jinan UniversityGuangzhou 510632 School of Materials Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093

The integration of redox-active sites into the skeleton of open-framework materials is an efficient strategy toward high-performance organic electrodes for energy storage *** this work,stepwise introduction of ketone(KT)groups to the skeletons of isostructural two-dimensional(2D)covalent organic frameworks(COFs)was realized by the condensation of 2,4,6-triformylphloroglucinol(Tp,as nodes)with a series of ditopic diamines,which contained none,one,two,and four KT moieties in each linker units,*** precise control of the redox functionalities at the molecular level,combined with regular built-in channels in these KT-Tp COFs endowed them with superior capacitances and excellent rate capabilities for energy *** particular,2KT-Tp COF and 4KT-Tp COF electrodes exhibited high capacitances of 256 and 583 F g−1 at a discharge rate of 0.2 A g−1,respectively,which outperformed most reported COF-based *** importantly,exceptional long-term cyclabilities(>92%capacitance retention)were achieved even after 20,000 cycles at a high current density of 5 A g−1 for these KT-Tp *** results demonstrated that orthoquinone moieties rendered enhanced performance than the redox COFs with isolated carbonyl groups.

关键词： redox-active covalent organic frameworks,orthoquinone supercapacitor energy storage

Functionalizing MOF with redox-active Tetrazine Moiety for Improving the Performance as Cathode of Li-O_(2)Batteries

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CCS Chemistry 2021年第3期3卷 1297-1305页

作者： Na Li Ze Chang Ming Zhong Zi-Xuan Fu Jun Luo Yi-Fang Zhao Guo-Bao Li Xian-He Bu School of Materials Science and Engineering Tianjin Key Laboratory of Metal and Molecule-Based Material ChemistryNankai UniversityTianjin 300350 Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin 300071 Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871

A redox-active tetrazine moiety is immobilized within a metal-organic framework(MOF)aiming at targeted construction of a cathode with improved performance for lithium–oxygen batteries.A 1,2,4,5-tetrazine(Tz)functionalized ligand is used to construct a nanoporous MOF,Tz-Mg-MOF-74,in which the redox activity of the Tz moiety is *** the redox activity of Tz with the porous nature of a MOF produced a Tz-Mg-MOF-74-based cathode with significantly improved electrochemical ***,the material has improved sustainable capacity with a lower overpotential compared with otherwise similar batteries without Tz and other reported MOF-based *** present approach productively integrates electrochemical activity derived from redox-active moieties and MOFs,and this combination opens a new avenue for the design of effective materials for energy storage and conversion.

关键词： redox-active tetrazine functionalized MOF cathode material lithium–oxygen battery

A High Energy Density Self-supported and Bendable Organic Electrode for redox Supercapacitors with a Wide Voltage Window

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Chinese Journal of Polymer Science 2020年第5期38卷 522-530,I0007页

作者： Rashid lqbal Aziz Ahmad Li-Juan Mao Zahid Ali Ghazi Abolhassan Imani Chun-Xiang Lu Li-Jing Xie Saad Melhi Fang-Yuan Su Cheng-Meng Chen Lin-Jie Zhi Zhi-Xiang Wei Chinese Academy of Sciences(CAS)Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and TechnologyBeijing 100190China CAS Key Laboratory of Carbon Materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China University of Chinese Academy of Sciences Beijing 100049China Department of Chemistry College of ScienceUniversity ofBishaBisha 61922Saudi Arabia

redox-active organic electrode materials are highly desirable in realizing next-generation all-in-one bendable electronic ***,a novel flexible supercapacitors(SCs)electrode is fabricated from poly(anthraquinonyl sulfide)(PAQS)and single-walled carbon nanotubes(SWCNTs)suspension by a simple vacuum filtration and named as *** PAQS-SWCNTs electrode offered an initial capacitance of 223 F·g^-1 and outstanding capacitance retention up to 78.4%after 3×10^4 charge-discharge cycles at 0.5 A·g^-1 current *** a high potential range(0-3 V)and aprotic electrolyte,the PAQS-SWCNTs electrodes in coin cell exhibited an outstanding energy density of 69 Wh·kg^-1 at a power density of 90.6 W·kg^-1,whereas in the fabricated flexible SCs it retained 63.2 Wh·kg^-*** PAQS-SWCNTs electrodes also showed extraordinary performance at a higher current density(20 A·g^-1)and maintained a specific capacitance of 55 and 47 F·g^-1 for coin and flexible SCs,***,the flexible SC is further verified to be able to illuminate up multiple *** futuristic findings showed that the SCs assembled with flexible PAQS-SWCNTs electrodes have potential application in energy-storage devices and make them highly appealing for future redox supercapacitors.

关键词： redox-active High energy density PAQS SWCNTs Flexible SCs