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Recent advances in AIEgen-based crystalline porous materials for chemical sensing

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Aggregate 2021年第3期2卷 113-127页

作者： yaozu liu Xinyu Guan Qianrong Fang State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin UniversityChangchunP.R.China

Aggregation-induced emission-based luminogens(AIEgens)have aroused enormous interest due to their unique high fluorescence in a condensed *** further explore their potential applications,such as chemical monitoring,immobilization of AIE molecules has been widely studied with a variety of *** porous materials,such as metal-organic frameworks,covalent organic frameworks,hydrogen-bonded organic framework,and organic cages,demonstrate well-controlled structures,large surface areas,and promising stabilities,thus providing a perfect platform for AIE agents *** chemical sensing performances are achieved based on these AIE-active crystalline porous materials,such as high sensitivity,short response time,selective identification,and high recyclability,which provide a new alternative to readily detect various hazardous ***,precise structures of AIEgen-based crystalline porous materials offer an easy way to investigate detection *** mini-review will provide a brief overview of AIEgen-based crystalline porous materials for detection and then address how to improve sensing performances remarkably.

关键词： AIEgen functional materials chemical sensing crystalline porous materials detection

A Two-dimensional Covalent Organic Framework for Iodine Adsorption

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Chemical Research in Chinese Universities 2022年第2期38卷 456-460页

作者： ZHANG Jianhui liu Jianchuan liu yaozu WANG Yujie FANG Qianrong QIU Shilun School of Information Engineering Zhongshan PolytechnicZhongshan 528404P.R.China State Key Laboratory of Inorganic Synthesis&Preparative Chemistry Jilin UniversityChangchun 130012P.R.China

Radioactive iodine is a notorious pollutant in gas radioactive nuclear waste due to its radiation hazard, volatility, chemical toxicity, and high mobility. Therefore, developing a material with high efficiency-specific iodine capture is significant. Covalent organic framework(COF) has attracted significant attention as a new crystalline porous organic material. Due to its large specific surface and high chemical stability, it is an excellent alternative to adsorbents. Herein, we report a chemically stable two-dimensional COF(termed JUC-609) with specific adsorption of iodine. Adsorption experiments show that JUC-609 has an excellent iodine adsorption capacity as high as 5.9 g/g under 353 K and normal pressure condition, and iodine adsorption after multiple cycles is still maintained. Our study thus promotes the potential application of COFs in the field of environment-related applications.

关键词： Porous material Covalent organic framework Iodine adsorption Mesoporous structure

A Three-dimensional Covalent Organic Framework for CO_(2) Uptake and Dyes Adsorption

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Chemical Research in Chinese Universities 2022年第3期38卷 834-837页

作者： SONG Jialong WANG Zitao liu yaozu TUO Chao WANG Yujie FANG Qianrong QIU Shilun State Key Laboratory of Inorganic Synthesis&Preparative Chemistry Jilin UniversityChangchun130012P.R.China School of Chemical Engineering and New Energy Materials Zhuhai College of Science and TechnologyZhuhai519041P.R.China

Environmental pollution is one of the most severe problems facing today,including water pollution and the greenhouse ***,developing materials with high-efficiency dyes adsorption and CO_(2)uptake is *** organic frameworks(COFs),as a burgeoning class of crystalline porous polymers,present a promising application potential in areas related to pollution regulation due to their exciting surface ***,we report a 3D COF with a high specific surface area(BET about 2072 m^(2)/g)by utilizing tetrahedral and rectangle building blocks connected through[4+4]imine condensation reactions to *** obtained COF not only can separate dyes from water effectively but also shows a remarkable CO_(2)uptake *** research thus provides a promising material to remove dyes and adsorb CO_(2)in environmental remediation.

关键词： Covalent organic framework Dye adsorption CO_(2)uptake

Three-Dimensional sp^(2) Carbon-Linked Covalent Organic Frameworks as a Drug Carrier Combined with Fluorescence Imaging

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Chinese Journal of Chemistry 2022年第17期40卷 2081-2088页

作者： Li Liao Zerong Zhang Xinyu Guan Hui Li yaozu liu Minghao Zhang Bin Tang Valentin Valtchev Yushan Yan Shilun Qiu Xiangdong Yao Qianrong Fang State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin UniversityChangchunJilin130012 China Deakin University Institute for Frontier MaterialsGeelongVictoria3216 Australia Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences189 Songling RoadLaoshan DistrictQingdaoShandong266101 China Normandie Univ ENSICAENUNICAENCNRSLaboratoire Catalyse et Spectrochimie6 Marechal Juin14050 CaenFrance Department of Chemical and Biomolecular Engineering Center for Catalytic Science and TechnologyUniversity of DelawareNewarkDE19716 USA

Three-dimensional(3D)covalent organic frameworks(COFs)are crystalline porous polymers with potential in numerous high-tech applications,but the linkages involved in their synthesis are still rather ***,we report novel 3D sp^(2) carbon-linked COFs fabricated by the formation reaction of C=C bonds and their application in fluorescence *** new COFs,namely JUC-580 and JUC-581,show high stability and excellent light-emitting properties in solid state and dispersed in various ***,we investigate the potential application of JUC-581 as a drug carrier combined with fluorescence *** results indicate that 3D sp^(2) carbon-linked COFs are not only potential drug-loaded and sustained release materials but also promising cell fluorescent *** study thus expands the structural categories of 3D COFs based on different linkages,and promotes their prospective applications for biomedicine and fluorescent materials.

关键词： Covalent organic frameworks Crystalline porous materials Microporous materials Fluorescence imaging Drug delivery

A Stable Luminescent Covalent Organic Framework Nanosheet for Sensitive Molecular Recognition

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CCS Chemistry 2023年第9期5卷 2033-2045页

作者： yaozu liu Junxia Ren Yujie Wang Xin Zhu Xinyu Guan Zisheng Wang Yida Zhou Liangkui Zhu Shilun Qiu Shengxiong Xiao Qianrong Fang State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin UniversityChangchun 130012 The Education Ministry Key Laboratory of Resource Chemistry Shanghai Key Laboratory of Rare Earth Functional MaterialsShanghai Frontiers Science Center of Biomimetic CatalysisCollege of Chemistry and Materials ScienceShanghai Normal UniversityShanghai 200234

Despite rapid advances in fluorescence detectors over the past decade,the development of a highly stable,sensitive,and selective fluorescence platform for molecular recognition remains a considerable *** we report a stable carbazole-based sp2 carbon fluorescence covalent organic framework(COF)nanosheet,termed a JUC-557 *** to the synergistic effect of aggregation-induced emission-and aggregation-caused quenching-based chromophores,the architecture of the JUC-577 shows high absolute quantum yields(up to 23.0%)in the solid state and when dispersed in various solvents as well as excellent sensing performance toward specific analytes,such as iodine(Ka:2.10×10^(5)M−1 and LOD:302 ppb),2,4,6-trinitrotoluene(Ka:4.38×10^(5)M−1 and LOD:129 ppb),and especially nitrobenzene(Ka:6.18×10^(6)M−1 and LOD:5 ppb)that is superior to that of fluorescence detection materials reported so ***,the JUC-557 nanosheet preserves strong luminescence and sensitive recognition,even under harsh conditions,and allows trace detection of various analytes via a handheld UV *** findings pave the way for developing stable ultrathin COF nanomaterials for highly sensitive and selective molecular detection.

关键词： covalent organic framework nanosheet fluorescence detection molecular recognition

一种新型磺酸修饰的共价有机框架用于二氧化碳吸收和染料吸附

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化学学报 2022年第1期80卷 37-43页

作者：王自陶刘耀祖王钰杰方千荣吉林大学化学学院无机合成与制备化学国家重点实验室长春130012

环境污染是地球现今的重要问题之一,而其中就包括水污染与温室效应.共价有机框架(covalentorganicframeworks, COFs)作为一种新兴的晶态多孔聚合物,因其优异的吸附性能,在污染治理领域具有广阔的应用前景.本工作报道了一种基于β-酮胺... 详细信息

环境污染是地球现今的重要问题之一,而其中就包括水污染与温室效应.共价有机框架(covalentorganicframeworks, COFs)作为一种新兴的晶态多孔聚合物,因其优异的吸附性能,在污染治理领域具有广阔的应用前景.本工作报道了一种基于β-酮胺单体通过迈克尔加成-消除反应合成的磺酸型微孔COF (JUC-603).该COF不仅能有效分离水中染料,而且具有显著的二氧化碳吸收能力.本研究为环境修复中的染料分离和二氧化碳吸收领域提供了一种具有潜力的材料.

关键词：多孔材料共价有机框架染料吸附二氧化碳吸收迈克尔加成-消除反应

高稳定二维联咔唑sp^(2)碳共轭共价有机框架材料用于高效电催化氧还原

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化学学报 2023年第8期81卷 884-890页

作者：刘建川李翠艳刘耀祖王钰杰方千荣吉林大学化学学院无机合成与制备化学国家重点实验室长春130012

化石燃料的过度消耗和环境污染已成为全球面临的主要问题,如何合理开发利用新能源成为我国能源战略中的主要目标.新型能量转换技术是促进新能源发展的关键.目前,以金属-空气电池、燃料电池等为主导的新型清洁电化学能量转换技术在转换... 详细信息

化石燃料的过度消耗和环境污染已成为全球面临的主要问题,如何合理开发利用新能源成为我国能源战略中的主要目标.新型能量转换技术是促进新能源发展的关键.目前,以金属-空气电池、燃料电池等为主导的新型清洁电化学能量转换技术在转换效率、经济性等方面均取得了重大突破,极具产业化应用前景.开发高效、稳定、低成本的电化学催化剂是促进清洁能转换装置发展的关键.在此,报道了一种基于联咔唑构筑单元合成的高稳定sp^(2)键型的共价有机框架材料(JUC-557)用于燃料电池阴极氧还原反应(ORR).该材料具有高比表面积、高稳定性等优点,同时也表现出高效的ORR催化性能和组装锌-空电池的应用潜力.此外,该材料相比于贵金属催化剂,也具有低成本、低污染、结构明确、原子和结构精度可控等优势.本研究为构建异质原子高效非金属电催化剂提供了一种新思路.

关键词：多孔材料共价有机框架电催化氧化还原非金属催化剂

一种高比表面积共价有机框架材料的合成及药物缓释性能

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高等学校化学学报 2019年第9期40卷 1813-1817页

作者：刘小舟王钰杰刘耀祖李宗龙李辉方千荣金永日吉林大学化学学院长春130012 吉林大学无机合成与制备化学国家重点实验室长春130012

合成了一种具有较高比表面积(SBET=1804 m^2/g)的新型二维共价有机框架(COF)材料(JUC-516),并将其应用于模拟人体体液(SBF)中模拟动物体内的药物缓释,取得了较理想的效果.通过Materials Studio模拟、粉末X射线衍射(PXRD)、 N2吸附-脱附... 详细信息

合成了一种具有较高比表面积(SBET=1804 m^2/g)的新型二维共价有机框架(COF)材料(JUC-516),并将其应用于模拟人体体液(SBF)中模拟动物体内的药物缓释,取得了较理想的效果.通过Materials Studio模拟、粉末X射线衍射(PXRD)、 N2吸附-脱附分析、扫描电子显微镜(SEM)及傅里叶变换红外光谱(FTIR)等方法表征了所得COF材料的结构,证实JUC-516是一种基于AA堆积hcb拓扑、具有高结晶度和球状形貌的共价有机框架材料.

关键词：共价有机框架多孔材料药物缓释

激光熔覆Ti60合金的工艺参数优化及组织性能研究

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中国激光 2024年第12期51卷 86-96页

作者：舒宗富黄春平张耀祖刘丰刚南昌航空大学无损检测技术教育部重点实验室江西南昌330063 中国航空研究院研究生院江苏扬州225003

主要研究了激光熔覆Ti60合金的工艺参数对成形质量的影响,以及微观组织特征和拉伸性能。结果表明,激光熔覆Ti60合金试样的底部和顶部区域为β等轴晶粒,中部区域为β柱状晶,且尺寸随着激光功率的增加而增大。显微组织主要由板条α相和板... 详细信息

主要研究了激光熔覆Ti60合金的工艺参数对成形质量的影响,以及微观组织特征和拉伸性能。结果表明,激光熔覆Ti60合金试样的底部和顶部区域为β等轴晶粒,中部区域为β柱状晶,且尺寸随着激光功率的增加而增大。显微组织主要由板条α相和板间β相构成,且板条α相中有大量白色析出相产生,随着激光功率的增加,微观组织由网篮组织转变为魏氏组织。块体试样的显微硬度分布较为均匀,其硬度值在420~440 HV范围内波动。激光熔覆Ti60合金的室温抗拉强度为1128 MPa,断后延伸率和断面收缩率分别为8.8%和14.4%。当温度为300℃和600℃时,抗拉强度分别为932 MPa和739 MPa,在600℃时,断后延伸率和断面收缩率分别为11.7%和18.2%。激光熔覆Ti60合金试样在室温下的断裂方式为准解理断裂,高温下其断裂方式为韧性断裂。

关键词：激光技术 Ti60高温钛合金激光熔覆工艺参数优化微观组织拉伸性能