作者：
Ji, Hong-Tao;Lu, Yu-Han;Liu, Yan-Ting;Huang, Yu-Lin;Tian, Jiang-Feng;...
期刊：
CHINESE CHEMICAL LETTERS,2025年36(2) ISSN：1001-8417
通讯作者：
Zhang, YH;He, WM
作者机构：
[Liu, Yan-Ting; Liu, Feng; Ji, Hong-Tao; Huang, Yu-Lin; Zhang, Yong-Hong] Univ South China, Affiliated Nanhua Hosp, Hengyang Med Sch, Dept Ophthalmol, Hengyang 421001, Peoples R China.;[Zeng, Yan-Yan; Lu, Yu-Han; He, Wei-Min; Tian, Jiang-Feng; Ji, Hong-Tao; He, WM] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.;[Yang, Hai-Yan] Cent South Univ, Hunan Canc Hosp, Affiliated Canc Hosp,Xiangya Sch Med, Dept Lung Canc & Gastroenterol, Changsha 410013, Peoples R China.
通讯机构：
[Zhang, YH ; He, WM ] U;Univ South China, Affiliated Nanhua Hosp, Hengyang Med Sch, Dept Ophthalmol, Hengyang 421001, Peoples R China.;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.
关键词：
Dual catalysis;Semiconductor;Chlorine;Redox catalyst;Hydrogen atom transfer
摘要：
The first example of Nd@C3 N4 -photoredox/chlorine dual catalyzed alkylation with unactivated alkanes as the alkyl sources has been developed, which allows for the synthesis of various 4-alkylated cyclic sulfonyl ketimines. In this process, chlorine functions as both a redox and hydrogen atom transfer catalyst. The synergism of the reversible Nd2 + /Nd3 + and Cl<overline>/Cl (center dot) redox pairs significantly enhances overall photocatalytic efficiency. The in vitro anticancer activity of 4-alkylated products was evaluated by using the CCK8 assay against both human choroidal melanoma (MUM-2B) and lung cancer (A549) cell. Compound 3da showed approximately triple the potency of 5-fluorouracil. (c) 2024 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.
期刊：
WATER AIR AND SOIL POLLUTION,2025年236(1):1-12 ISSN：0049-6979
通讯作者：
Xue, JH
作者机构：
[Wang, Xinqing; Huang, Boshi; Xue, Jinhua; Xiao, Xilin] Univ South China, Sch Publ Hlth, Hengyang Med Sch, Hengyang, Hunan, Peoples R China.;[Lin, Dongying] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Hunan, Peoples R China.;[Liu, Jingjing; Ren, Lanxing] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.;[Xiao, Xilin] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Changsha, Hunan, Peoples R China.
通讯机构：
[Xue, JH ] U;Univ South China, Sch Publ Hlth, Hengyang Med Sch, Hengyang, Hunan, Peoples R China.
关键词：
Cadmium (II);FR;PAN;Fluorescence quenching
摘要：
The objective of this study was to establish a novel method of fluorescence for the determination of cadmium using fluorescein (FR) and 1-(2-Pyridinylazo)-2-Naohthalenol (PAN). In the pH 9.75 buffer solution of the ammonia-ammonium chloride, the energy transfer between FR and the PAN can occur, which can result in the quenching of the fluorescence. The addition of Cd (II) to this system enhances the degree of quenching. This phenomenon has led to the establishment of a novel method for the determination of cadmium, which has been optimized in terms of the required experimental conditions. In the optimal experimental conditions, the fluorescence intensity of the system decreased linearly in the range of 7.81 x 10-7 to 2.14 x 10-5 mol L-1. The linear regression equation used in this study was F = 123.63 + 170.65c (x 10-6 mol L-1) under the correlation coefficient of 0.9951, the detection limit of 2.34 x 10-7 mol L-1, and the relative standard deviation of 0.18%. The proposed method was simple, sensitive, fast, and economical. The method can be employed for the determination of cadmium in real samples (tap-water, pond water and Xiangjiang River) with the results demonstrating consistency with the graphite furnace atomic absorption method (t-test). This approach offers an innovative method for the quantification of Cd (II).
关键词：
Advanced oxidation process;TC degradation;Carbon nanotubes;Fe/Fe 3 C nanoparticles;Encapsulated structures
摘要：
In this study, nitrogen-doped nanotube-encapsulated iron nanoparticle catalysts (Fe/Fe3C@NCNTs) were prepared using a one-step pyrolysis strategy for the efficiently activating of peroxymonosulfate (PMS) to degrade tetracycline hydrochloride (TC). The embedded structure greatly minimized the leaching of metals and enhanced the catalyst stability. The prepared Fe/Fe3C@NCNT-800 (0.05 g/L) exhibited excellent PMS (0.5 g/L) catalytic activity for the rapid degradation of TC (30 mg/L) with degradation rate of 90.5 % within 5 min under the pH of 7 and 25 degrees C. Its performance was nearly unaffected by environmental factors (temperature, pH, inorganic anions and organic matter). Moreover, the Fe/Fe3C@NCNT-800/PMS system maintained a TC removal rate of 85.5 % after four cycles of degradation experiments, with a negligible amount of metal leaching. X-ray photoelectron spectroscopy, electron paramagnetic resonance spectroscopy and electrochemical measurements showed that iron nanoparticles and graphitic nitrogen promoted Fe2+/Fe3+ cycling and reactive oxygen species generation as catalytic centers. Among them, 1O2 and electron transfer were shown to be the main degradation pathways for degrading TC.
摘要：
Semi-heterogeneous photocatalysis has emerged as a powerful and productive platform in organic chemistry, which provides mild and eco-friendly conditions for a diverse range of bond-forming reactions. The synergy of homogeneous catalysts and heterogeneous catalysts inherits their main advantages, such as higher activities, easy separation and superior recyclability. In this review, we summarize the recent advances in recyclable semi-heterogenous protocols for the light promoted bond-forming reactions and identify directions for future research according to the different photocatalysts/metal/redox catalysts involved. Notably, this review is not a comprehensive description of reported literature but aim to highlight and illustrate key concepts, strategies, reaction model, reaction conditions and mechanisms. (c) 2024 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.
期刊：
Dyes and Pigments,2025年232:112456 ISSN：0143-7208
通讯作者：
Li-Li Wang
作者机构：
[Jian Qin; Peng-Xiang Yuan; Ze-Ping Xiao; Liu-Pan Yang; Huan Yao; Li-Li Wang] School of Pharmaceutical Science, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, 421001, China;[Rong Hu] School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China
通讯机构：
[Li-Li Wang] S;School of Pharmaceutical Science, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, 421001, China
作者机构：
[Fang Wang; Zhuo Chen; Yue Wu; Yating Peng] School of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China;[Tingting Li; Liangshu Xia] School of Nuclear Science and Technology, University of South China, Hengyang, Hunan 421001, China
通讯机构：
[Fang Wang; Tingting Li; Liangshu Xia] S;School of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China<&wdkj&>School of Nuclear Science and Technology, University of South China, Hengyang, Hunan 421001, China
摘要：
In this study, Fe/N co-doped graphene-like honeycomb porous carbon (Fe-NC)was produced and used for the activating PMS to degrade TC. The Fe-NC catalyst has shown high activity in the TC degradation by activated PMS, with an efficiency of up to 94 % in 30 min. while the blank catalyst without N and Fe doping exhibited the lowest performance with 47.3 % TC degradation. Moreover, other operational factors of Fe-NC catalysts were also investigated to evaluate its catalytic activity. The burst experiments and electron paramagnetic resonance (EPR) experiments demonstrated that free radical paths (O-2(& sdot;-)) and non-free radical paths (O-1(2)) coexist inside the Fe-NC/PMS system. The experiment results and degradation mechanism analysis revealed that N species(Pyridine N, Graphite N,Fe-N-x) x ) and iron species (Fe0) were possible to be the active species of catalysts. Furthermore, Fe-NC/PMS system was investigated for possible pathway of TC degradation by liquid mass spectrometry (LC- MS), and the presence of intermediates was analyzed for toxicity magnitude by ECOSAR software.
期刊：
CURRENT ANALYTICAL CHEMISTRY,2024年 ISSN：1573-4110
通讯作者：
Tan, Yan;Xiao, XL
作者机构：
[Chen, Zijie; Tan, Yan; Tan, Y; Xiao, Xilin; Huang, Shaorong; Wu, Qian; Xiao, XL; Liu, Zhen] Univ South China, Sch Publ Hlth, Hengyang Med Sch, Hengyang, Hunan, Peoples R China.;[Liu, Jingjing] Univ South China, Sch Chem & Chem Engn, Hengyang, Hunan, Peoples R China.;[Xiao, Xilin] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Changsha, Hunan, Peoples R China.
通讯机构：
[Tan, Y; Xiao, XL ] U;Univ South China, Sch Publ Hlth, Hengyang Med Sch, Hengyang, Hunan, Peoples R China.
关键词：
Magnetic nanoparticles;graphene oxide;adsorption;uranium ions
摘要：
Background The problem of nuclear water pollution is becoming serious worldwide. Uranium, as a metal substance with long half-life radioactivity, is commonly treated by various methods. Adsorption is considered to be one of the most promising methods for treating uranium-containing wastewater.Method Magnetic nanoparticles MnFe2O4 were prepared via the coprecipitation method, followed by modification of silica using the improved St & ouml;ber method. Subsequently, amino was functionalized and grafted onto graphene oxide to prepare a novel magnetic graphene oxide composite MnFe2O4@SiO2-NH2@GO.Results The highest adsorption rate of MnFe2O4@SiO2-NH2@GO for uranium can reach 97.27% in 1 mg<middle dot>L-1 uranium solution, and the adsorption process conformed to the quasi-second-order kinetic model and Langmuir adsorption isotherm model, indicating that it was a monolayer adsorption dominated by chemisorption. The adsorption thermodynamic parameters demonstrated that the adsorption process was a spontaneous endothermic reaction.Conclusion MnFe2O4@SiO2-NH2@GO had excellent adsorption properties for uranium, which has great application potential in the treatment of low-concentration uranium-containing wastewater.
作者机构：
[Cai, JH; Cai, Jinhui; Zhang, Wenting] Univ South China, Coll Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.;[Li, Weishuang] Hubei Engn Univ, Sch Chem & Mat Sci, Hubei Key Lab Qual Control Characterist Fruits & V, Xiaogan 432000, Peoples R China.;[Muhammad, Usman; Muhammad, U] Zhejiang Univ, Coll Pharmaceut Sci, Hangzhou 310058, Peoples R China.;[Xie, Yanjun; Xie, YJ] Hunan Inst Engn, Coll Mat & Chem Engn, Hunan Prov Key Lab Environm Catalysis & Waste Recy, Xiangtan 411104, Peoples R China.
通讯机构：
[Cai, JH ] U;[Li, WS ; Xie, YJ ] H;[Muhammad, U ] Z;Univ South China, Coll Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.;Hubei Engn Univ, Sch Chem & Mat Sci, Hubei Key Lab Qual Control Characterist Fruits & V, Xiaogan 432000, Peoples R China.
摘要：
Due to the significance of chiral benzoheterocycles, the synthesis of these skeletons draws considerable attention from chemists and remarkable progress has been made in the last few decades. However, most of the methods employ noble transition metals as catalysts. Herein, this review mainly focuses on the facile assembly of enantio-enriched benzoheterocycles via Earth-abundant metal catalysis. To date, numerous methods have been well developed, such as the Ullmann reaction, hydroarylation, borylation or cycloetherification of alkenes, O-H insertion of alpha-diazo esters, tandem arylation of heteroatom-linked olefins, kinetic resolution, hydrofunctionalization of dihydroquinolines, and other kinds of methods, which are discussed in detail in this review. Furthermore, we also discuss the existing limitations of the previously reported methods and the perspectives in this field.
摘要：
With Ag/g‐C3N4 semiconductor as the heterogeneous photocatalyst, the visible light promoted heterogeneous synthesis of unsymmetric diaryl chalcogenides could be achieved under additive‐free and mild conditions. A series of unsymmetric diaryl chalcogenides were generated in good to excellent yields with high functional group tolerance. The Ag/g‐C3N4 photocatalyst is easily recovered from the reaction mixture and reused at least 5 times, opening the way for larger‐scale industrial applications of this type of photocatalytic bond‐forming reactions. Abstract With Ag/g‐C3N4 semiconductor as the heterogeneous photocatalyst, the visible light promoted heterogeneous synthesis of unsymmetric diaryl chalcogenides could be achieved under additive‐free and mild conditions. A series of unsymmetric diaryl chalcogenides were generated in good to excellent yields with high functional group tolerance. The Ag/g‐C3N4 photocatalyst is easily recovered from the reaction mixture and reused at least 5 times, opening the way for larger‐scale industrial applications of this type of photocatalytic bond‐forming reactions.
摘要：
Flexible conductive hydrogels (FCHs) have attracted widespread interest as versatile monoliths that can be intricately integrated with various ingredients boasting multiple functionalities. The chemicophysical properties of FCHs cover a wide range, which significantly vary in their building blocks. However, achieving both favorable mechanical strength and high conductivity simultaneously through a facile approach remains a challenge. Herein, polyvinyl alcohol, dialdehyde cellulose nanofibrils, silver nanoparticles, borax, and tannic acid are readily "one-pot" incorporated into FCHs with great tensile stress (499kPa), tensile strain (4591%), and compressive stress (269kPa) due to abundant hydrogen bonding, dynamic borate-diol bonding, and intermolecular acetalization. They also exhibit desired self-healing, generalized-adhesive, and antibacterial performances. Taking advantage of these, FCHs are further employed to support an epidermal sensor, on which remarkable strain sensitivity (gauge factor=8.22), high-pressure sensitivity (≥ 0.258kPa(-1)), and fast response (≤ 190ms) are recorded. Its highly adaptive mechano-electric transformability and functions can be well maintained in serving as an array unit and touch screen pen. The results well addressed in this work are anticipated to pave the universal way of engineering FCHs.
作者机构：
[Liu, Yuan -Yuan; He, Wei-Min; Li, Ting; Ji, Hong-Tao; Ouyang, Wen-Tao; Jiang, Jun; Jiang, Yan-Fang; He, WM] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.;[Ou, Li-Juan] Hunan Inst Technol, Sch Mat Sci & Engn, Hengyang 421002, Peoples R China.;[Li, Ting] Nanjing Forestry Univ, Natl Engn Res Ctr Low Carbon Proc & Utilizat Fores, Nanjing 210037, Peoples R China.
通讯机构：
[Ou, LJ ] H;[He, WM ] U;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China.;Hunan Inst Technol, Sch Mat Sci & Engn, Hengyang 421002, Peoples R China.
关键词：
Sono-photocatalysis;External photocatalyst-free;Quinoxalin-2(1 H )-ones;Amination;Aliphatic amines
摘要：
The first example of sono-photocatalytic bond formation was reported. With both visible light and ultrasound wave as the energy, various 3-aminoquinoxalin-2(1H)-ones were efficiently obtained with good functional group tolerance in the absence of any additive or external photocatalyst. Compared with the conventional photocatalysis, sono-photocatalysis not only dramatically improved the reaction rates and yields, but also reduced energy consumption.
作者机构：
[Rong-Nan Yi] Key Laboratory of Food & Environment & Drug Monitoring and Testing of Universities in Hunan Province, Hunan Police Academy, Changsha 410138, China;[Wei-Min He] School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
通讯机构：
[Wei-Min He] S;School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
摘要：
<正>Bioisosteres play an important role in pharmaceutical and agri cultural compound design that has been developed to enhance the properties of molecules.As a sp3-rich small ring cage hydro carbons,bicyclo[1.1.1]pentanes （BCPs） were commonly considered as a bioisostere of the para-substituted arenes,internal alkynes and tert–butyl groups,and its introduction can significantly im prove pharmacokinetic properties,including passive permeability aqueous solubility,metabolic stability[1].Over the past decades numerous pharmaceutically relevant molecules with biaryl frame works were improved by the approach of bioisosteric replacement Conventional strategies for the synthesis of such BCP-aryls deriva tives mostly depend on the stepwise C–C formation via the di rect addition to bridgehead C–C bond of[1.1.1]propellane to pro vide active BCP-intermediates and followed by a second transition metal cross-coupling sequence.However,these pioneer works were limited by the low step economy,the use of unstable reagents and harsh conditions in industrial productions.Recently,radical mediated one-step,multi-component reactions[2-6]for synthe sizing various BCP-aryl derivatives have made progress,although these strategies were limited to the prefunctionalized （het）arene and tertiary alkyl radicals[7].Therefore,it is of great significance to develop a method for diverse BCP-aryls that can be compatible with primary,secondary,tertiary radicals and direct C–H function alization of （het）arenes.
期刊：
JOURNAL OF ORGANIC CHEMISTRY,2024年89(17):12591–12609 ISSN：0022-3263
通讯作者：
Huang, Huawen;Deng, GJ;Wang, QL
作者机构：
[Zhu, Mengqi; Deng, Guo-Jun; Huang, Huawen; Deng, GJ] Xiangtan Univ, Coll Chem, Key Lab Green Organ Synth & Applicat Hunan Prov, Key Lab Environmentally Friendly Chem & Applicat,M, Xiangtan 411105, Peoples R China.;[Wang, Qiao-Lin; Wang, QL] Univ South China, Coll Chem & Chem Engn, Hengyang 421001, Peoples R China.;[Mao, Guojiang; Deng, Guo-Jun; Deng, GJ] Henan Normal Univ, Sch Chem & Chem Engn, Xinxiang 453007, Peoples R China.
通讯机构：
[Huang, HW; Deng, GJ ] X;[Wang, QL ] U;Xiangtan Univ, Coll Chem, Key Lab Green Organ Synth & Applicat Hunan Prov, Key Lab Environmentally Friendly Chem & Applicat,M, Xiangtan 411105, Peoples R China.;Univ South China, Coll Chem & Chem Engn, Hengyang 421001, Peoples R China.;Henan Normal Univ, Sch Chem & Chem Engn, Xinxiang 453007, Peoples R China.
摘要：
The incorporation of gem-difluoromethylene units into organic molecules remains a formidable challenge. Conventional methodologies for constructing aryldifluoromethyl derivatives relied on the use of high-functional fluorinating regents under harsh conditions. Herein, we report general and efficient photoredox catalytic systems for defluoroalkylation of readily available trifluoromethylarenes through selective C-F cleavage to deliver gem-difluoromethyl radicals which proceed through reductive addition to both electron-donating and withdrawing alkenes under transition-metal free conditions. Mechanistic studies reveal that thiol serves as both photocatalyst and HAT reagent under visible light irradiation. This synergistic photocatalysis and HAT catalysis protocol exhibits ample and salient features such as high chemo- and regioselectivity, broad substrate scope, amenable gram-scale synthesis and late-stage modification of bioactive molecules.
