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Post-synthetic modifications of MOFs by different bolt ligands for controllable release of cargoes

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chinese chemical Letters 2024年第10期35卷 404-407页

作者： Hao Wang Meng-qi Pan Ya-fei Wang Chao Chen Jian Xu Yuan-Yuan Gao Chuan-Song qi Wei Li Xian-he Bu college of New Materials and chemical Engineering Beijing Key Lab of Special Elastomeric Composite MaterialsBeijing Institute of Petrochemical TechnologyBeijing 102617China School of Materials Science and Engineering National Institute for Advanced MaterialsTKL of Metal and Molecule-Based Material ChemistryNankai UniversityTianjin300350China college of chemical Engineering Inner Mongolia University of TechnologyHohhot 010051China

Post-synthetic modifications(PSM)have drawn great attention as a vigoroso tool to tune or enhance the performance of metal-organic frameworks(MOFs).However,the current PSM method usually have to sacrifice the porosity of MOFs to enrich their functionality,such as pore space partition(PSP)and postsynthetic elimination and insertion(PSE&I),causing a trade-off in this *** address this issue,we herein propose a new PSM strategy of using the size-matching ligands as the bolts to lock MOFs'pores,which could be anchored onto open metal sites(OMSs)after guest loading through a stepwise *** a result,the loaded cargoes undergo a controlled releasing process with respect to different bolt *** proposed strategy provides a promising way to balance the functionality and porosity of MOFs.

关键词： Post-synthetic modifications Metal-organic frameworks Bolting ligand Control release Cargo

Discussions about whether radioactive half life can be changed by mechanic motion

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Science china chemistry 2009年第5期52卷 693-698页

作者： he yujian ZENG LiXi qi {3. college of chemistry and chemical Engineering Graduate University of the Chinese Academy of SciencesBeijing 100049China college of chemistry and Molecular Engineering Peking UniversityBeijing 100871China

In this essay, some discussions and comments about the paper entitled "Can the decay rate of 3.P be changed by mechanic motion?" (Ding et al., Science in china Series B:{3. (chinese version), 2008, 3.(11):103.-103.) are given. It was strongly suggested that its experimental methods, data calculations and conclusion should be reconsidered. After the data were recalculated, the new results supported that the chiral mechanic motion could induce the changes of radioactive half life.

关键词： circular rotation radioactive decay half life chirality

Qualitative analysis of aromatic compounds via 1D TOCSY techniques

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Magnetic Resonance Letters 2024年第1期4卷 21-27页

作者： Wenbo Dong qi Zhao Jiancheng Zhao Jiarong Zhang Yingxiong Wang Yan qiao State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of Sciences27 South Taoyuan RoadTaiyuan030001China graduate university of chinese academy of sciences Beijing100049China Marine Biomedical Research Institution Guangdong Medical UniversityZhanjiang524023China college of chemistry Taiyuan University of Technology79 Yingze West StreetWanbailin DistrictTaiyuan030024China

The aromatic compounds,including o-xylene,m-xylene,p-xylene,and ethylbenzene,primarily originate from the catalytic reforming of crude oil,and have a wide variety of ap***,because of similar physical and chemical properties,these compounds are difficult to be identified by gas chromatography(GC)without standard *** the development of modern nuclear magnetic resonance(NMR)techniques,NMR has emerged as a powerful and efficient tool for the rapid analysis of complex and crude mixtures without *** this study,the parameters of one-dimensional(1D)total correlation spectroscopy(TOCSY)NMR techniques,including 1D selective gradient TOCSY and 1D chemicalshift-selective filtration(CSSF)with TOCSY,were optimized to obtain comprehensive molecular structure *** results indicate that the overlapped signals in NMR spectra of nonpolar aromatic compounds(including o-xylene,m-xylene,p-xylene and ethylbenzene),polar aromatic compounds(benzyl alcohol,benzaldehyde,benzoic acid),and aromatic compounds with additional conjugated bonds(styrene)can be resolved in 1D *** importantly,full molecular structures can be clearly distinguished by setting appropriate mixing time in 1D *** approach simplifies the NMR spectra,provides structural information of entire molecules,and can be applied for the analysis of other structural isomers.

关键词： 1D TOCSY NMR technologies Xylenes Aromatic compounds Structure information of entire molecular Qualitative analysis

The chemical structures,biosynthesis,and biological activities of secondary metabolites from the culinary-medicinal mushrooms of the genus hericium:a review

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chinese Journal of Natural Medicines 2024年第8期22卷 676-698页

作者： qi Jianzhao WU Jing KANG Shijie GAO Jingming Hirokazu Kawagishi LIU Hongwei LIU Chengwei Key Laboratory for Enzyme and Enzyme-Like Material Engineering of heilongjiang College of Life ScienceNortheast Forestry UniversityHarbin 150040China Shaanxi Key Laboratory of Natural Products&chemical Biology College of Chemistry&PharmacyNorthwest A&F UniversityYangling 712100China Faculty of Agriculture Shizuoka UniversityShizuoka 422-8529Japan State Key Laboratory of Mycology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China

Fungal phytochemicals derived from higher fungi,particularly those from the culinary-medicinal genus hericium,have gained significant attention in drug discovery and *** review aims to provide a comprehensive analysis of the chemical structures,biosynthetic pathways,biological activities,and pharmacological properties of monomeric compounds isolated from hericium *** the past 3. years,253.metabolites have been identified from various hericium species,including cyathane diterpenes,alkaloids,benzofurans,chromenes,phenols,pyrones,steroids,and other miscellaneous *** investigations into the biosynthesis of erinacines,a type of cyathane diterpene,have led to the discovery of novel cyathane *** research has highlighted the biological activities and pharmacological properties of hericium-derived compounds,with particular emphasis on their neuroprotective and neurotrophic effects,immunomodulatory capabilities,anti-cancer activity,antioxidant properties,and antimicrobial *** A,in particular,has been extensively ***,transcriptomic,and proteomic analyses of hericium species have facilitated the discovery of new compounds and provided insights into enzymatic reactions through genome *** diverse chemical structures and biological activities of hericium compounds underpin their potential applications in medicine and as dietary *** review not only advances our understanding of hericium compounds but also encourages further research into hericium species within the realms of medicine,health,functional foods,and agricultural *** broad spectrum of compound types and their diverse biological activities present promising opportunities for the development of new pharmaceuticals and edible products.

关键词： hericium Secondary metabolites Biological activity Biosynthesis

SYNTheSIS AND CHARACTERIZATION OF A NOVEL BLUE LIGHT EMITTING ROD-COIL DIBLOCK OLIGOMER

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chinese Journal of Polymer Science 2002年第5期20卷 401-407页

作者： Lifang Yang Haifeng he Hongqing Cao Xinhua Wan qi-feng Zhou Department of Polymer Science & Engineering {3. of chemistry & Molecular Engineering Peking university beijing 100871, china Peking Univ Coll Chem & Mol Engn Dept Polymer Sci & Engn Beijing 100871 Peoples R China

Four new rod-coil diblock molecules, which had well-defined para-phenylene oligomers (PPP, from biphenyl to quinquephenyl) as rigid segments and poly(ethylene oxide) (PEO, M-w ca. 750) as flexible segments, were synthesized. The chemical structure and the number of repeating unit in PEO coil and PPP rod were characterized by H-1-NMR and MALDI-TOF mass spectrometry. The diblock oligomers showed good solubility in common organic solvents and aggregated in water as characterized by a blue shift in UV-vis absorption spectra, a red shift in emission spectra, quenching of the fluorescence and formation of the microfibrilla and fractal-like structures. The formation of different supramolecular structures meant that this effort might lead to commercial important highly organized functional materials.

关键词： rod-coil diblock oligomer MALDI-TOF mass spectrometry microfibrilla aggregate fractal-like pattern

Natural killer cell membrane doped supramolecular nanoplatform with immuno-modulatory functions for immuno-enhanced tumor phototherapy

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chinese chemical Letters 2024年第10期35卷 205-212页

作者： Ying Gao Rong Zhou qiwen Wang Shaolong qi Yuanyuan Lv Shuang Liu Jie Shen Guocan Yu Institute of Pharmaceutics College of Pharmaceutical SciencesZhejiang UniversityHangzhou 310058China Key Laboratory of Novel Targets and Drug Study for Neural Repair of Zhejiang Province School of MedicineHangzhou City UniversityHangzhou 310015 China Department of Cardiology The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China MOE Key Laboratoryof Bioorganic Phosphorus chemistry & chemical Biology Department of ChemistryTsinghua UniversityBeijing04Chin Emergency Department State Key Laboratory of Complex Severe and Rare DiseasesPeking Union Medical College HospitalChinese Academy of Medical Science and Peking Union Medical CollegeBeijing 100730China

Photodynamic therapy(PDT)has garnered significant attention as a promising approach to cancer therapy,harnessing the combined benefits of localized light treatment and the accompanying host immune *** this study,we engineered an immuno-enhanced PDT nanoplatform,denoted as HM@p-MOF(hybrid membrane@porphyrin-metal organic framework).The core porphyrin-MOF was cloaked with a hybrid membrane derived from B16F10 cancer cells and NK cells,resulting in enhanced *** both in vitro and in vivo experiments,our finding demonstrated that the hybrid membrane conferred dual targeting capabilities to the nanoplatform,leveraging the unique properties of the B16F10 membrane and NK membrane to augment immunogenic cell death(ICD)induced by photodynamic ***,in conjunction with the immunomodulatory functions of the NK cell membrane,we observed an expansion of in situ immune infiltration leading to a systemic immune *** HM@p-MOF nanoplatform exhibited the capacity to not only inhibit the growth of mouse melanoma but also suppress *** innovative HM@p-MOF nanoplatform present a viable strategy to enhance phototherapeutic efficacy for both localized and metastatic *** provides a direction for the fabrication of biomimetic nanomedicines possessing immuno-modulatory function.

关键词： Biomimetic Cell membrane Metal-organic framework Phototherapy Tumor targeting

Facile Surface Engineering of NiCo_(2)O_(4) to Boost Propane Oxidation Activity

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china Petroleum Processing & Petrochemical Technology 2024年第1期26卷 19-26页

作者： Yang Jialei Wang Fengyi Lei Yang Zhang Mingchao Sun Shiqiang Xu Wenfan Ke Jiaxiang Wu Haojie Li Xingyun qi Jian Institute of Materials for Energy and Environment College of Materials Science and EngineeringQingdao UniversityQingdao 266071China School of chemistry and chemical Engineering Hubei Key Laboratory of Coal Conversion and New Carbon MaterialsWuhan University of Science and TechnologyWuhan 430081China Department of Burn and Plastic Surgery Qingdao Municipal Hospital Affiliated to Rehabilitation UniversityQingdao 266000China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

Spinel oxide(NiCo_(2)O_(4))has demonstrated great potential to replace noble metal catalysts for the oxidation reaction of air *** further boost the oxidation ability of such catalysts,in this study,a facile surface-engineering strategy wherein NiCo_(2)O_(4) was treated with different alkali solvents was *** obtained catalyst(NiCo_(2)O_(4)-OH)showed a higher surface alkalinity and more surface defects compared to the pristine spinel oxide,including enhanced structural distortion as well as promoted oxygen *** propane oxidation ability of NiCo_(2)O_(4)-OH was greatly enhanced,with a propane conversion rate that was approximately 6.4 times higher than that of pristine NiCo_(2)O_(4) at a reaction temperature 193..This work sets a valuable paradigm for the surface modulation of spinel oxide via alkali treatment to ensure a high-performance oxidation catalyst.

关键词： NiCo_(2)O_(4) surface defects alkali treatment propane oxidation

Side-Chain Engineering of Non-Fullerene Acceptors with Trialkylsilyloxy Groups for Enhanced Photovoltaic Performancet

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chinese Journal of chemistry 2024年第18期42卷 2153-2160页

作者： qingyuan Wang qi Chen Shixin Meng Li Tian Haiqiao Wang Yu Chen Zitong Liu Lingwei Xue Zhi-Guo Zhang State Key Laboratory of chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijingUniversityof Chemical TechnologyBeijing 100029China School of Materials Science and Engineering Henan University of TechnologyZhengzhouHenan 450001China beijing Engineering Research Center for the Synthesis and Applications of Waterborne Polymers Beijing University of Chemical TechnologyBeijing100029China The Institute of High Energy Physics Chinese Academy of SciencesBejing 100049China state Key Laboratory of Applied Organic chemistry(SKLAoc) College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhouGansu730000China Yaoshan Laboratory Pingdingshan UniversityPingdingshanHenan 467000China

Side-chain engineering has emerged as a highly effective strategy for tailoring the aggregation behavior and charge transport properties of non-fullerene small molecule acceptors(SMAs).In this study,we designed and synthesized two SMAs,namely BTPSi-Bu and BTPSi-Pr,respectively incorporating tributylsilyloxy and trisopropylsilyloxy groups in their outer ***,BTPSi-Bu exhibited better planarity,crystallization,and favorable phase separation when paired with PM6 donor polymer compared to its counterpart,*** resulting organic solar cells,utilizing the PM6:BTPSi-Bu blend,demonstrated a remarkable power conversion efficiency of 17.41%and a high open-circuit voltage of 0.859 *** findings underscore the significance of integrating trialkylsilyloxy side chains into SMAs as a rational design approach for enhancing the performance of photovoltaic systems.

关键词： Organic solar cells Non-fullerene acceptors Oligomers Side-chain engineering Energy conversion Synthesis design Donor-acceptor systems

An all-metallic nanovesicle for hydrogen oxidation

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National Science Review 2024年第06期11卷 233-242页

作者： Juntao Zhang Lujie Jin Hao Sun Xiaozhi Liu Yujin Ji Youyong Li Wei Liu Dong Su Xuerui Liu Zhongbin Zhuang Zhiwei Hu qi Shao Xiaoqing Huang State Key Laboratory of Physical chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Innovation Laboratory for sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Key Laboratory for Special Functional Materials of Ministry of Education National &Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology School of Materials Science and EngineeringCollaborative Innovation Center of Nano Functional Materials and Applications Henan University Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials& Devices Soochow University State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences State Key Lab of Organic-Inorganic Composites Beijing University of Chemical Technology Max Planck Institute for chemical Physics of Solids college of chemistry and chemical Engineering and Materials Science Soochow University

Vesicle, a microscopic unit that encloses a volume with an ultrathin wall, is ubiquitous in ***, it remains a huge challenge to create its inorganic metal-based artificial counterparts. here,inspired by the formation of biological vesicles, we proposed a novel biomimetic strategy of curling the ultrathin nanosheets into nanovesicles, which was driven by the interfacial strain. Trapped by the interfacial strain between the initially formed substrate Rh layer and subsequently formed RhRu overlayer, the nanosheet begins to deform in order to release a certain amount of strain. Density functional theory（DFT）calculations reveal that the Ru atoms make the curling of nanosheets more favorable in thermodynamics applications. Owing to the unique vesicular structure, the RhRu nanovesicles/C displays excellent hydrogen oxidation reaction（HOR） activity and stability, which has been proven by both experiments and DFT calculations. Specifically, the HOR mass activity of RhRu nanovesicles/C are 7.52 A mg（Rh+Ru）-1at an overpotential of 50 m V at the rotating disk electrode（RDE） level; this is 24.19 times that of commercial Pt/C(0.3. m A mgPt-1). Moreover, the hydroxide exchange membrane fuel cell（heMFC） with RhRu nanovesicles/C displays a peak power density of 1.62 W cm-2in the H2-O2condition, much better than that of commercial Pt/C(1.18 W cm-2). This work creates a new biomimetic strategy to synthesize inorganic nanomaterials, paving a pathway for designing catalytic reactors.

关键词： biomimetic synthesis nanovesicle interfacial strain hydrogen oxidation reaction