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Highly sensitive fluorescent sensing and photocatalytic degradation performance of two-dimensional Tb-organic network

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Journal of Rare Earths 2024年第2期42卷 303-313,I0003页

作者： Ting Gao Zhihu Ma Yixia Ren Zhixiang Wang Meili Zhang Xiaoli Chen Jijiang Wang Laboratory of New Energy and New Function Materials Shaanxi Key Laboratory of Chemical Reaction EngineeringCollege of Chemistry and Chemical EngineeringYan'an UniversityYan'an716000China

A novel tetra-nuclear Tb-organic network,named as [Tb_(4)(2-pyia)_(6)(HAc)_(0.5)(2,2'-bipy)(H_(2)O)_(4.5)]·2,2'-bipy·H_(2)O(1),was synthesized hydrothermally based on 5-(pyridin-2-ylmethoxy) isophthalic acid(H_(2)pyia) and 2,2'-bipyridine(2,2'-bipy) ligands,and characterized by single crystal X-ray diffraction,thermogravimetric(TG) analyses,powder X-ray diffraction(PXRD) and infrared(IR) technology.1 possesses a two-dimensional network based on the tetra-nuclear inorganic building units,and the π-πstacking interactions between the pyia^(2-) ligands and the guest 2,2'-bipy molecules play an important role in the forming of 3D supramolecular structure.1 exhibits excellent fluorescent sensing performance for Fe^(3+)(1.26×10^(-8) mol/L),Cr_(2)O_(7)^(2-)(8.1×10^(-7) mol/L),2,4,6-trinitrophenol(TNP)(2.71×10^(-8) mol/L)and tetracycline(TCT)(2.76×10^(-7) mol/L) in aqueous solution with lower detection *** sensing mechanisms of 1 were investigated by density functional theory(DFT) calculations,ultraviolet-visible(UV-Vis) diffuse reflectance spectroscopy,PXRD and fluorescent lifetime *** activated product of 1 was prepared by heating at 255℃ under constant pressure and used to photo-catalytically degrade *** 1 and the activated one have good photocatalytic degradation performance for TCT with degradation rates of 84.29% and 96.07%,*** photocatalytic mechanisms were discovered by UV-Vis diffuse reflectance spectroscopy and radical trap *** Tb-organic framework might be an excellent multifunctional fluorescent sensor and a good photocatalytic agent for TCT degradation in the future.

关键词： Tb-organic network fluorescent sensing Photocatalytic degradation Rare earths

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Sensitive fluorescent sensing for Hydrogen Sulfide by Perovskite Quantum Dots

Sensitive Fluorescent Sensing for Hydrogen Sulfide by Perovs...

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中国化学会第十三届全国分析化学年会

作者： Chaoqun Chen Zhonghui Chen Zhenyu Lin Fang Luo Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety Department of Chemistry Fuzhou University

As a highly toxic environmental pollutant and also an important gaseous signaling compound in diverse physiological processes,the selective and sensitive detection of hydrogen sulfide (HS) is very *** this work,a novel fluorescence nanosensor was designed for rapid visual detection of HS by using CsPbBr perovskite quantum dots (QDs).The quenching mechanism of perovskite QDs for HS is Sulfide ions have a strong affinity for Pb(Ⅱ),When HS is added,sulfur ions bind Pb(Ⅱ) to form insoluble PbS precipitates and the morphological features and crystal structure of the original CsPbBr nanocrystals are destroyed.

关键词： CsPbBr3 QDs fluorescent sensing Hydrogen Sulfide

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Development of porphyrin-based fluorescent sensors and sensor arrays for saccharide recognition

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Chinese Chemical Letters 2024年第2期35卷 16-23页

作者： Yubin Ding Jiaxin Wang Ruinan Wang Yongshu Xie Department of Chemistry College of SciencesNanjing Agricultural UniversityNanjing 210095China Shanghai Key Laboratory of Functional Materials Chemistry Key Laboratory for Advanced Materials and Institute of Fine ChemicalsSchool of Chemistry and Molecular EngineeringEast China University of Science & TechnologyShanghai 200237China

Saccharide sensing is a very meaningful research topic as saccharides are involved in many biological ***,it is challenging to design molecular sensors for saccharides because this family of compounds is hydromimetic in aqueous solutions and shares a similar chemical *** this review,research progress in the development of porphyrin-based saccharide sensors is described with representative *** focus on using porphyrin as the signal reporter because porphyrins exhibit unique advantages in high chemical stability,long emission wavelength,and multiple structural modification *** literature results have been classified into mainly two sections according to the general working principles of the porphyrin sensor *** the first section,recognition unit,design strategy and sensing performance of traditional porphyrin-based selective saccharide sensors are *** in the second section,development of porphyrin-based sensor arrays for pattern recognition of saccharides has been *** through the design strategy and sensing performance of reported achievements,it is reasonable to anticipate a bright future for designing practical porphyrin-based saccharide sensors.

关键词： Porphyrin Saccharide fluorescent sensing Selective sensing Pattern recognition

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TPE based aggregation induced emission fluorescent sensors for viscosity of liquid and mechanical properties of hydrogel

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Chinese Chemical Letters 2022年第1期33卷 252-256页

作者： Na Wang Hang Yao Qi Tao Jing Sun Hao Ma Yang Wang ChengCheng Zhou Hongying Fan Hongxia Shao Aijian Qin Dawei Su Chenyin Wang Hui Chong School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225009China Testing center of Yangzhou University Yangzhou 225009China Ministry of Education Key Lab for Avian Preventive Medicine Key Laboratory of Jiangsu Preventive Veterinary MedicineCollege of Veterinary MedicineYangzhou UniversityYangzhou 225009China Center for Clean Energy Technology School of Mathematical and Physical ScienceFaculty of ScienceUniversity of Technology SydneySydney NSW 2000Australia

Two amphiphilic TPE E/Z isomers with aggregation induced emission(AIE)property have been synthesized and *** logarithmic fluorescent intensity of the two molecules was in positive relationship with logarithmic viscosity of *** note,the Z-TPE isomer exhibited more sensitivity in the viscosity of liquid sensing in comparison with the corresponding E-TPE counterpart(around 1.80 folds).Furthermore,two molecules could be used as fluorescent sensors for mechanical properties(viscosity and storage modulus)of hydrogel as *** addition,two sensors displayed low cytotoxicity in normal tissue cell line(L929)within the concentration range of 2–10μmol/*** results potentially promised their applications as fluorescent sensors for mechanical properties in the fields of biological and biomedical.

关键词： TPE AIE Viscosity of liquid Mechanical property of hydrogel fluorescent sensing

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Intermolecular through-space charge transfer enabled by bicomponent assembly for ultrasensitive detection of synthetic cannabinoid JWH-018

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聚集体(英文) 2023年第4期4卷 128-137页

作者： Chaogan Liu Fangfang Xiao Yushu Li Da Lei Yuan Liu Xiaowei Ma Chengzhi Gu Xincun Dou State Key Laboratory Incubation Base for Green Processing of Chemical Engineering School of Chemistry and Chemical EngineeringShihezi UniversityShiheziChina Xinjiang Key Laboratory of Explosives Safety Science Xinjiang Technical Institute of Physics&ChemistryChinese Academy of SciencesUrumqiChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingChina

Launching the intermolecular through-space charge transfer(TSCT)from a bicomponent assembly for photophysical property manipulation is of great significance in fluorescence probe ***,we demonstrate the elaborate control of droplet evaporation dynamics for intermolecular TSCT can facilitate the ultrasensitive detection of JWH-018,a representative synthetic *** by diverse intermolecular interactions,the probe,and JWH-018 assemble in a closely stacked manner to emit strong fluorescence at 477 nm,ascribing to the intermolecular TSCT at the S2 *** strategy realizes an ultra-low limit of detection of 11 nmol/mL and great selectivity towards *** practicability is further verified by constructing a sensing chip for JWH-018 aerosol detection,which facilitates the on-site drug abuser screening with the naked ***,the proposed assembly-enabled TSCT is expected to find a variety of applications for optoelectronic materials design and photophysical mechanism-dominated molecular recognition.

关键词： bicomponent assembly fluorescent sensing intermolecular interaction

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