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Evaluation of 1,4-naphthoquinone derivatives as antibacterial agents: activity and mechanistic studies

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 3, doi: 10.1007/s11783-023-1631-2

Abstract:

● All 1,4-naphthoquinone hybrids exhibited significant antimicrobial

Keywords： 1     4-naphthoquinone derivatives     Antibacterial     Action mechanism     RecA    

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Synthesis, insecticidal activities and DFT study of pyrimidin-4-amine derivatives containing the 1,2,4

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1090-1100 doi: 10.1007/s11705-021-2091-5

Abstract: Twenty six novel pyrimidin-4-amine derivatives containing the 1,2,4-oxadiazole motif were synthesized

Keywords： synthesis     pyrimidin-4-amine derivatives     1     2     4-oxadiazole     insecticidal activity     structure-activity    

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Design, synthesis, biological activity and density function theory study of pyrazole derivatives containing

Xiaoming Ding, Zhiwen Zhai, Luping Lv, Zhaohui Sun, Xinghai Liu

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 379-386 doi: 10.1007/s11705-017-1634-2

Abstract: A variety of pyrazole derivatives containing 1,3,4-thiadiazole moiety were synthesized under microwaveand antifungal activities, and the results indicated that two compounds with a phenyl group ( ) and 4-

Keywords： pyrazole     1     3     4-thiadiazole     antifungal activity     herbicidal activity     density function theory    

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Discovery of cryptolepine derivatives as novel promising agents against phytopathogenic bacteria

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2,   Pages 156-166 doi: 10.1007/s11705-022-2196-5

Abstract: To ensure the production of food crops, a series of cryptolepine derivatives were synthesised, afterselected as a candidate to conduct preliminary analyses of the antibacterial mechanisms of cryptolepine derivatives

Keywords： cryptolepine derivatives     phytopathogenic bacteria     antibacterial activity     mechanism of action    

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Discovery of novel ursolic acid derivatives as effective antimicrobial agents through a ROS-mediated

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2101-2113 doi: 10.1007/s11705-023-2361-5

Abstract: In this study, we prepared three series of ursolic acid derivatives and assessed their antibacterial

Keywords： ursolic acid     antibacterial activities     reactive oxygen species     apoptosis    

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Comparisons of bridges flutter derivatives and generalized ones

Fuyou XU , Zhe ZHANG , Cailiang HUANG , Airong CHEN ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 272-278 doi: 10.1007/s11709-009-0042-1

Abstract: The graphs of the generalized flutter derivatives of plate and Sutong Bridge section model are plottedThe characteristics of all generalized flutter derivatives are compared and analyzed, and their superioritiesThe results indicate that the physical meaning of generalized flutter derivatives are more explicit comparednonlinearity properties of self-excited aerodynamic force of bridge according to the generalized flutter derivatives

Keywords： bridge     flutter derivative     generalized flutter derivative     self-excited aerodynamic force     Sutong Bridge    

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Synthesis and ultraviolet/aggregation-induced emission investigation of novel tetraphenylvinyl hydrazone derivatives

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2061-2073 doi: 10.1007/s11705-023-2366-0

Abstract: Herein, three novel tetraphenylethylene hydrazone chemosensors TC12, SC16, and TC16 are prepared for the selective detection of F−. Two NH and one C=N units are incorporated into the sensors for better colorimetric responses, whereas the tetraphenyl unit is in charge of the aggregation-induced emission effect. Among them, compounds SC16 and TC16 form stable gels with some organic solvents. All the tetrahydrofuran/H2O solutions of the three compounds exhibit aggregation-induced emission effect, whereby the fluorescence emission increases by varying degrees with the volume of poor solvent water. Moreover, good aggregation-induced emission effects are observed in the self-assembly of SC16 and TC16. As a sample chemosensor, TC12 in tetrahydrofuran responds to F− selectively with high sensitivity, with the colorimetric and fluorometric detection limits of 8.25 × 10−7 mol·L–1 and 2.69 × 10−7 mol·L–1, respectively. The reversible gel-sol-gel phase transition and color changes indicate that both SC16-dimethyl sulfoxide and TC16-ethyl acetate gels specifically respond to F– with good sensitivity. The detection results are well supported by ultraviolet-visible spectroscopy, fluorescent spectroscopy, and 1H nuclear magnetic resonance. More importantly, the driving forces of gelation are visually clarified through the single crystal X-ray analysis of compound TOMe.

Keywords： organogelator     tetraphenylvinyldrazone     single crystal     aggregation-induced emission effect     ion sensing    

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Effect of graphene and its derivatives on thermo-mechanical properties of phase change materials and

Frontiers in Energy 2022, Volume 16, Issue 2,   Pages 150-186 doi: 10.1007/s11708-021-0795-3

Abstract: Gr and its derivatives ((Gr oxide (GO), Gr aerogel (GA) and Gr nanoplatelets (GNPs)) based PCMs can improve

Keywords： phase change materials (PCMs)     graphene     thermal conductivity     characterization    

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Magnetic KIT-6 nano-composite and its amino derivatives as convenient adsorbent for U(VI) sequestration

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2037-2049 doi: 10.1007/s11705-023-2358-0

Abstract: Herein, we successfully prepared magnetic KIT-6 nano-composite and its amino derivatives by bearing acid-resistant

Keywords： magnetic nanoparticle     3D mesoporous silica     amino functionalization     adsorption of U(VI)     acid resistance    

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Determination of aniline derivatives in water samples after preconcentration with oxidized multiwalled

Hideyuki KATSUMATA, Yuta ODA, Satoshi KANECO, Tohru SUZUKI, Kiyohisa OHTA

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 3,   Pages 270-275 doi: 10.1007/s11705-012-1298-x

Abstract: oxidized multiwalled carbon nanotubes (OMWCNTs), has been developed for the determination of aniline derivatives, such as 2-nitroaniline (2-NA), 4-nitroaniline (4-NA), and 2,4-dichloroaniline (2,4-DCA) in water samplesRelative standard deviations for five determinations were 7.5% (2-NA), 6.5% (4-NA) and 3.8% (2,4-DCA)The detection limits (3S/N) of 2-NA, 4-NA and 2,4-DCA were 30 pg·mL , 31 pg·mL and 26 pg·mL , respectively

Keywords： aniline determination     solid-phase extraction     oxidized multiwalled carbon nanotubes     water sample     HPLC-UV    

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The synthesis of 6-(tert-butyl)-8-fluoro-2,3-dimethylquinoline carbonate derivatives and their antifungal

Long Cheng, Ruirui Zhang, Hongke Wu, Xinghai Liu, Tianming Xu

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 2,   Pages 369-376 doi: 10.1007/s11705-018-1734-7

Abstract: A series of novel 6-( -butyl)-8-fluoro-2,3-dimethylquinoline carbonate derivatives were designed andIt was found that the compound (benzyl (6-( -butyl)-8-fluoro-2,3- dimethylquinolin-4-yl) carbonate)

Keywords： quinoline     synthesis     antifungal activity     rice blast     SAR    

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Review of the Current Synthesis and Properties of Energetic Pentazolate and Derivatives Thereof Review

Dominique R. Wozniak, Davin G. Piercey

Engineering 2020, Volume 6, Issue 9,   Pages 981-991 doi: 10.1016/j.eng.2020.05.019

Abstract:

The latest member of the azole family, the pentazolate or cyclo-N5−, has received increased attention since its first mass-spectral detection by Christe et al. in 2002. As it is carbon- and hydrogen-free, the pentazolate anion can release large amounts of energy while simultaneously decomposing to environmentally friendly nitrogen gas. Due to these attractive qualities, cyclo-N5− and related compounds are essential in the advancement of high-energy-density materials (HEDMs) research. This review aims to provide a consolidated report on all research done on cyclo-N5−, with a focus on pentazoles as energetic materials and on their experimental synthesis. Included in this review are the following: ① the historical significance of cyclo-N5−; ② precursors of cyclo-N5−; ③ synthesis routes of cyclo-N5− with a focus on arylpentazole precursors; ④ factors affecting the stability of cyclo-N5−; ⑤ energetic performances of current energetic cyclo-N5−-containing compounds; and ⑥ future possible experimental research. This review is a comprehensive summary of the current understanding of cyclo-N5−, in an effort to further understand the potential of this anion for adoption as a powerful and environmentally friendly next-generation explosive.

Keywords： Explosives     Pentazoles     High-nitrogen compounds    

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ZnFe2O4/BiVO4 Z-scheme heterojunction for efficient visible-light photocatalytic

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1728-1740 doi: 10.1007/s11705-023-2322-z

Abstract: A novel Z-scheme ZnFe2O4/BiVO4 heterojunction photocatalyst was successfullyCompared with the single-phase counterparts, ZnFe2O4/BiVO4 demonstratedConsequently, the 30% ZnFe2O4/BiVO4 catalyst afforded a degradationorganic carbon removal rate of 50%, which is an excellent activity compared with ever reported BiVO42O4/BiVO4 heterojunctions were quite

Keywords： ZnFe2O4/BiVO4     Z-scheme heterojunction     photocatalytic degradation    

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Laser ablation of block copolymers with hydrogen-bonded azobenzene derivatives

Jintang Huang, Youju Huang, Si Wu

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 450-456 doi: 10.1007/s11705-018-1735-6

Abstract:

Supramolecular assemblies (PS-b-P4VP(AzoR)) are fabricated by hydrogen-bonding azobenzene derivatives(AzoR) to poly(4-vinyl pyridine) blocks of polystyrene-block-poly(4-vinyl pyridine) (PS-b-P4VP).PS-b-P4VP(AzoR) forms phase separated nanostructures with a period of ~75–105 nm.The laser ablation threshold of PS-b-P4VP(AzoR) decreases as the concentration of AzoR increases.the trend: PS-b-P4VP(AzoCN)<PS-b-P4VP(AzoCH3)<PS-b-P4VP(AzoH).

Keywords： laser ablation     block copolymers     hydrogen-bond     azobenzene derivatives     supramolecular assembly    

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Li4SiO4-coated LiNi0.5Mn1.5O4 as the high performance

Shifeng YANG, Wenfeng REN, Jian CHEN

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 374-382 doi: 10.1007/s11708-017-0494-2

Abstract: The preparation of Li SiO -coated LiNi Mn O materials by sintering the SiO -coated nickel-manganese oxides with lithium salts using abundant and low-cost sodium silicate as the silicon source was reported. The samples were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. It was found that a uniform and complete SiO coating layer could be obtained at a suitable pH value of 10, which transformed to a good Li SiO coating layer afterwards. When used as the cathode materials for lithium-ion batteries, the Li SiO -coated LiNi Mn O samples deliver a better electrochemical performance in terms of the discharge capacity, rate capability, and cycling stability than that of the pristine material. It can still deliver 111.1 mAh/g at 20 C after 300 cycles, with a retention ratio of 93.1% of the stable capacity, which is far beyond that of the pristine material (101.3 mAh/g, 85.6%).

Keywords： lithium-ion batteries     cathode material     LiNi0.5Mn1.5O4     lithium-ion conductor    

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Title Author Date Type Operation

Evaluation of 1,4-naphthoquinone derivatives as antibacterial agents: activity and mechanistic studies

Journal Article

Synthesis, insecticidal activities and DFT study of pyrimidin-4-amine derivatives containing the 1,2,4

Journal Article

Design, synthesis, biological activity and density function theory study of pyrazole derivatives containing

Xiaoming Ding, Zhiwen Zhai, Luping Lv, Zhaohui Sun, Xinghai Liu

Journal Article

Discovery of cryptolepine derivatives as novel promising agents against phytopathogenic bacteria

Journal Article

Discovery of novel ursolic acid derivatives as effective antimicrobial agents through a ROS-mediated

Journal Article

Comparisons of bridges flutter derivatives and generalized ones

Fuyou XU , Zhe ZHANG , Cailiang HUANG , Airong CHEN ,

Journal Article

Synthesis and ultraviolet/aggregation-induced emission investigation of novel tetraphenylvinyl hydrazone derivatives

Journal Article

Effect of graphene and its derivatives on thermo-mechanical properties of phase change materials and

Journal Article

Magnetic KIT-6 nano-composite and its amino derivatives as convenient adsorbent for U(VI) sequestration

Journal Article

Determination of aniline derivatives in water samples after preconcentration with oxidized multiwalled

Hideyuki KATSUMATA, Yuta ODA, Satoshi KANECO, Tohru SUZUKI, Kiyohisa OHTA

Journal Article

The synthesis of 6-(tert-butyl)-8-fluoro-2,3-dimethylquinoline carbonate derivatives and their antifungal

Long Cheng, Ruirui Zhang, Hongke Wu, Xinghai Liu, Tianming Xu

Journal Article

Review of the Current Synthesis and Properties of Energetic Pentazolate and Derivatives Thereof

Dominique R. Wozniak, Davin G. Piercey

Journal Article

ZnFe2O4/BiVO4 Z-scheme heterojunction for efficient visible-light photocatalytic

Journal Article

Laser ablation of block copolymers with hydrogen-bonded azobenzene derivatives

Jintang Huang, Youju Huang, Si Wu

Journal Article

Li4SiO4-coated LiNi0.5Mn1.5O4 as the high performance

Shifeng YANG, Wenfeng REN, Jian CHEN

Journal Article