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Journal articles on the topic 'Amidoxima'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Coutinho, Fernanda M. B., Simone M. Rezende, and Celina C. R. Barbosa. "Resinas quelantes amidoxímicas." Polímeros 9, no. 4 (December 1999): 129–35. http://dx.doi.org/10.1590/s0104-14281999000400022.

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Resinas quelantes com grupos amidoxima foram sintetizadas por copolimerização em suspensão de acrilonitrila (AN) e divinilbenzeno (DVB) e subsequente modificação química dos grupos ciano por reação com hidroxilamina. Na copolimerização, a proporção de divinilbenzeno e o grau de diluição foram variados. Gelatina e carbonato de cálcio foram usados como estabilizadores de suspensão e sulfato de sódio foi adicionado para reduzir a solubilidade da acrilonitrila em água, por meio do efeito salting out. Os copolímeros de AN/DVB e as resinas amidoxímicas obtidos foram caracterizados por meio de densidade aparente, área específica, volume de poros e teor de nitrogênio. As resinas amidoxímicas foram também avaliadas em relação a capacidade de complexação de íons cobre.

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2

Decato, Daniel A., and Orion B. Berryman. "Structural and computational characterization of a bridging zwitterionic-amidoxime uranyl complex." Organic Chemistry Frontiers 6, no. 7 (2019): 1038–43. http://dx.doi.org/10.1039/c9qo00267g.

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3

Zhang, Linjuan, Meiying Qie, Jing Su, Shuo Zhang, Jing Zhou, Jiong Li, Yu Wang, et al. "Tris-amidoximate uranyl complexesviaη2binding mode coordinated in aqueous solution shown by X-ray absorption spectroscopy and density functional theory methods." Journal of Synchrotron Radiation 25, no. 2 (February 19, 2018): 514–22. http://dx.doi.org/10.1107/s160057751800067x.

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The present study sheds some light on the long-standing debate concerning the coordination properties between uranyl ions and the amidoxime ligand, which is a key ingredient for achieving efficient extraction of uranium. Using X-ray absorption fine structure combined with theoretical simulation methods, the binding mode and bonding nature of a uranyl–amidoxime complex in aqueous solution were determined for the first time. The results show that in a highly concentrated amidoxime solution the preferred binding mode between UO22+and the amidoxime ligand is η2coordination with tris-amidoximate species. In such a uranyl–amidoximate complex with η2binding motif, strong covalent interaction and orbital hybridization between U 5f/6dand (N, O) 2pshould be responsible for the excellent binding ability of the amidoximate ligand to uranyl. The study was performed directly in aqueous solution to avoid the possible binding mode differences caused by crystallization of a single-crystal sample. This work also is an example of the simultaneous study of local structure and electronic structure in solution systems using combined diagnostic tools.

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4

Al-Mousawi, Saleh Mohammed, Moustafa Sherief Moustafa, and Mohamed Hilmy Elnagdi. "Studies with 2-Arylhydrazononitriles: Further Investigations on the Utility of 2-Arylhydrazononitriles as Precursors to 1,2,3-Triazole Amines." Journal of Chemical Research 2007, no. 9 (September 2007): 515–18. http://dx.doi.org/10.3184/030823407x244869.

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3-Oxo-2-arylhydrazonobutanenitriles react with hydroxylamine hydrochloride in ethanolic sodium acetate to yield either amidoximes or isoxazolamines depending on the nature of the substituent. The amidoximes cyclise in refluxing DMF containing piperidine to form 2-aryl-1,2,3-triazol-5-amines. The isoxazolamines rearranged into 1,2,3-triazolamines on refluxing in DMF. Amidoxime 2c cyclised in acetic anhydride to give 2-arylhydrazono-1,2,4-oxadiazole 9c, which rearranged to acetylamino-1,2,3-triazole 8c. The prepared acetyl-1,2,3-triazolamines 8b,c were utilised as precursors to triazolopyridines and pyrazolyltriazoles.

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5

Hall, James Edwin, John E. Kerrigan, Kishore Ramachandran, Brendan C. Bender, Jason P. Stanko, Susan K. Jones, Donald A. Patrick, and Richard R. Tidwell. "Anti-Pneumocystis Activities of Aromatic Diamidoxime Prodrugs." Antimicrobial Agents and Chemotherapy 42, no. 3 (March 1, 1998): 666–74. http://dx.doi.org/10.1128/aac.42.3.666.

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ABSTRACT Aromatic dicationic compounds, such as pentamidine, have potent antimicrobial activities. Clinical use of these compounds has been restricted, however, by their toxicity and limited oral activity. A novel approach, using amidoxime derivatives as prodrugs, has recently been proposed to overcome these limitations. Although results were presented for amidoxime derivatives of only one diamidine, pentamidine, the authors in the original proposal claimed that amidoxime derivatives would work as effective prodrugs for all pharmacologically active diamidines. Nine novel amidoxime derivatives were synthesized and tested in the present study for activity against Pneumocystis carinii in corticosteroid-suppressed rats. Only three of the nine compounds had significant oral anti-Pneumocystis activity. The bisbenzamidoxime derivatives of three direct pentamidine analogs had excellent oral and intravenous activities and reduced acute host toxicity. These compounds are not likely candidates for future drug development, however, because they have chronic toxic effects and the active amidine compounds have multiple sites susceptible to oxidative metabolism, which complicates their pharmacology and toxicology. Novel diamidoximes from three other structural classes, containing different groups linking the cationic moieties, lacked significant oral or intravenous anti-Pneumocystis activity, even though the corresponding diamidines were very active intravenously. Both active and inactive amidoximes were readily metabolized to the corresponding amidines by cell-free liver homogenates. Thus, the amidoxime prodrug approach may provide a strategy to exploit the potent antimicrobial and other pharmacological activities of selected, but certainly not all, aromatic diamidines.

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6

Medeiros, Herbert Igor Rodrigues de, Bruna Barbosa Maia da Silva, Carlos Eduardo Rodrigues Aguiar, Thiago Araújo de Medeiros Brito, Fernando Emanuel de Sousa Ferreira, Natan Dias Fernandes, Érika Paiva de Moura, and Francisco Cesino de Medeiros Júnior. "SÍNTESE, ELUCIDAÇÃO DA ARQUITETURA MOLECULAR E AVALIAÇÃO DO POTENCIAL CITOTÓXICO DE UM PROMISSOR CANDIDATO A FÁRMACO DERIVADO DE AMIDOXIMA / SYNTHESIS, ELUCIDATION OF MOLECULAR ARCHITECTURE AND EVALUATION OF THE CYTOTOXIC POTENTIAL OF A PROMISING DRUG CANDIDATE DERIVED FROM AMIDOXIME." Brazilian Journal of Development 6, no. 9 (2020): 66070–79. http://dx.doi.org/10.34117/bjdv6n9-149.

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7

Md Jamil, Siti Nurul Ain, Mastura Khairuddin, and Rusli Daik. "Preparation of acrylonitrile/acrylamide copolymer beads via a redox method and their adsorption properties after chemical modification." e-Polymers 15, no. 1 (January 1, 2015): 45–54. http://dx.doi.org/10.1515/epoly-2014-0109.

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AbstractPoly(acrylonitrile-co-acrylamide) [poly(AN-co- AM)] was prepared via a redox method, with sodium bisulfite and potassium persulphate as the initiators. High yield was attained in up to 76% of monomer conversion within 3 h of reaction time. The copolymers were then chemically modified with hydroxylamine hydrochloride to obtain amidoxime functional groups in the polyacrylonitrile (PAN) system. The role of the amidoxime group is to form a chelating ion-exchange network based on acrylonitrile for the adsorption of heavy metal ions in aqueous solution. Based on the Fourier transform infrared spectra, the appearance of a strong band at the regions of 1680 and 3300–3400 cm-1 due to the stretching vibration of C=O and NH2 groups, respectively, confirmed the copolymerization of acrylamide into the PAN system. In the case of modified copolymers, there was an appearance of broad bands at the regions of ∼3300 and ∼900 cm-1, which corresponded to the stretching vibrations of O-H and =N-O, respectively, from the oxime group. The scanning electron microscopy showed that the average size of the copolymer particles was ∼149 nm, and the average size increased to ∼217 nm in the case of the modified copolymer. The amidoximed poly(AN-co-AM) was analyzed by inductively coupled plasma to investigate its adsorption behavior toward Cu(II).

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8

MOURA, A. L., J. F. SILVA, J. J. R. DE FREITAS, J. C. R. FREITAS, and J. R. DE FREITAS FILHO. "EXPERIENCING A SYNTHESIS ONE-POT OF 1,2,4-OXADIAZOLE MEDIATED BY MICROWAVE OVEN: GREEN CHEMISTRY IN FOCUS." Periódico Tchê Química 16, no. 32 (August 20, 2019): 820–32. http://dx.doi.org/10.52571/ptq.v16.n32.2019.838_periodico32_pgs_820_832.pdf.

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1,2,4-oxadiazoles are compounds that have attracted the attention of many researchers due to their wide range of biological activities, for example, anti-inflammatory, antimicrobial, antitumor etc. The syntheses are based mostly on the use of amidoximes and acylating agents as the initial reactants. This work aims to describe a one-pot reaction for the synthesis of 1,2,4-oxadiazols, mediated by microwave irradiation, employing home-use microwave oven, in the discipline of heterocyclic Chemistry in the postgraduate. The methodology consisted of the reaction of nitriles, hydroxylamine hydrochloride, potassium carbonate and different esters to obtain 1,2,4-oxadiazole. The reactions include two sequential procedures: base-promoted intermolecular addition of hydroxylamine to nitrile to lead to amidoxime, then treatment of the amidoxime with esther to form 1,2,4-oxadiazoles in good yields. This method represents a direct and simple protocol for the synthesis of 3,5-disubstituted 1,2,4-oxadiazoles. It was initially discussed with the students the chemistry of the oxadiazoles, one-pot reactions and green chemistry through atheoretical-expository-dialogue strategy. In the course of the didactic intervention the students, through a thematic seminary, presented the results of the analysis of the spectra from the different techniques used. With the skills acquired from completing this laboratory work, the students become well-prepared to perform spectroscopic analyzes in subsequent experiments encountered in the organic chemistry laboratory.

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9

Möhrle, Hans, Karin Bluhme-Hensen, Birgit Middelhauve, Dietrich Mootz, and Hartmut Wunderlich. "Cyclisierung von Amidoximen mit Oxybis(diphenylboran) / Cyclization of Amidoximes with Oxybis(diphenylborane)." Zeitschrift für Naturforschung B 46, no. 9 (September 1, 1991): 1219–22. http://dx.doi.org/10.1515/znb-1991-0914.

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Substituted amidoximes when reacted with oxybis(diphenylborane) do not yield ester chelates as main products but boron heterocycles. The compound obtained from p-toluamidoxime was found by crystal structure analysis to be 2-phenyl-4-(4-methylphenyl)-2,3-dihydro-1,3,5,2-oxadiazaborol (9). The conformation of the molecule is determined by angles of 29.1 and 24.4° between the planes of adjacent rings. Except N–O all bonds in the heterocyclic ring contain significant π character. Molecules are linked to chains by a weak bifurcated hydrogen bond. 9 crystallizes with the monoclinic space group P21/c, Ζ = 4, a = 5.574(2), b = 18.274(4), c = 12.754(4) Å, β = 106.41(2)°. Refinement of 227 parameters using 1709 observed reflections converged at R = 0.037.

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10

Markov, Andrey V., Aleksandra V. Sen’kova, Irina I. Popadyuk, Oksana V. Salomatina, Evgeniya B. Logashenko, Nina I. Komarova, Anna A. Ilyina, Nariman F. Salakhutdinov, and Marina A. Zenkova. "Novel 3′-Substituted-1′,2′,4′-Oxadiazole Derivatives of 18βH-Glycyrrhetinic Acid and Their O-Acylated Amidoximes: Synthesis and Evaluation of Antitumor and Anti-Inflammatory Potential In Vitro and In Vivo." International Journal of Molecular Sciences 21, no. 10 (May 15, 2020): 3511. http://dx.doi.org/10.3390/ijms21103511.

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A series of novel 18βH-glycyrrhetinic acid (GA) derivatives containing 3′-(alkyl/phenyl/pyridin(-2″, -3″, and -4″)-yl)-1′,2′,4′-oxadiazole moieties at the C-30 position were synthesized by condensation of triterpenoid’s carboxyl group with corresponding amidoximes and further cyclization. Screening of the cytotoxicity of novel GA derivatives on a panel of tumor cell lines showed that the 3-acetoxy triterpenoid intermediates—O-acylated amidoxime 3a-h—display better solubility under bioassay conditions and more pronounced cytotoxicity compared to their 1′,2′,4′-oxadiazole analogs 4f-h (median IC50 = 7.0 and 49.7 µM, respectively). Subsequent replacement of the 3-acetoxy group by the hydroxyl group of pyridin(-2″, 3″, and -4″)-yl-1′,2′,4′-oxadiazole-bearing GA derivatives produced compounds 5f-h, showing the most pronounced selective toxicity toward tumor cells (median selectivity index (SI) > 12.1). Further detailed analysis of the antitumor activity of hit derivative 5f revealed its marked proapoptotic activity and inhibitory effects on clonogenicity and motility of HeLa cervical carcinoma cells in vitro, and the metastatic growth of B16 melanoma in vivo. Additionally, the comprehensive in silico study revealed intermediate 3d, bearing the tert-butyl moiety in O-acylated amidoxime, as a potent anti-inflammatory candidate, which was able to effectively inhibit inflammatory response induced by IFNγ in macrophages in vitro and carrageenan in murine models in vivo, probably by primary interactions with active sites of MMP9, neutrophil elastase, and thrombin. Taken together, our findings provide a basis for a better understanding of the structure–activity relationship of 1′,2′,4′-oxadiazole-containing triterpenoids and reveal two hit molecules with pronounced antitumor (5f) and anti-inflammatory (3d) activities.

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11

Möhrle, Hans, and Jürgen Lessel. "Ν,Ν-Disubstituierte Amidoxim-Nachbargruppen in Cyclodehydrierungen / Assistance of Ν,Ν-Disubstituted Amidoximes in Cyclodehydrogenation Reactions." Zeitschrift für Naturforschung B 47, no. 9 (September 1, 1992): 1333–40. http://dx.doi.org/10.1515/znb-1992-0920.

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o-(tert-Amino)benzamidoximes 6, Ν,Ν-disubstituted at the amid-N-atom of the nucleophilic moiety, are suitable neighbouring groups in cyclodehydrogenation reactions of tertiary amines using mercury(II)-edta. The kind of the N-substituents and the amount of oxidizing agent control the nature of the products, lactams 9 and anellated nitrones 8. The configuration of the tricyclic systems is determined by NMR spectroscopic methods. During the reaction an inversion of the configuration of the oxime moiety occurs, which is explained by an electrocyclic mechanism.

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12

Stasevych, Maryna, Viktor Zvarych, Volodymyr Novikov, and Mykhailo Vovk. "Amidoxime-Functionalized (9,10-Dioxoantracen-1-yl)hydrazones." Chemistry & Chemical Technology 13, no. 4 (December 15, 2019): 417–23. http://dx.doi.org/10.23939/chcht13.04.417.

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13

Hu, Min, Yu Hao Ma, Zong Jie Li, Wei Min Kang, and Bo Wen Cheng. "Preparation and Characterization of the Amidoxime-Modified Polyacrylonitrile (PAN-Amidoxime) Nanofibre Composite." Applied Mechanics and Materials 633-634 (September 2014): 30–33. http://dx.doi.org/10.4028/www.scientific.net/amm.633-634.30.

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In this research, a kind of nonwoven composite used for the absorption of heavy mental ions has been made. The composite was made of two layers of ES thermal bonded nonwovens as the protective layers and the PAN-amidoxime nanofibers which are prepared through the modification of electrospun PAN nanofibers as the interlayer. The composition was achieved by the ultrasonic bonding method. After the composition the PAN nanofibers were modified by grafting the amidoxime group to PAN. The results of FT-IR spectra and FE-SEM indicated that nitrile groups in PAN were partly converted into amidoxime groups and there were no serious cracks on the surface of PAN-amidoxime nanofibers. The results show that the amidoxime groups have been proved to be grafted to the PAN nanofibers with the percent grafting of 81.6%.

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14

Yang, Chu-Ting, Jun Han, Jun Liu, Mei Gu, Yi Li, Jun Wen, Hai-Zhu Yu, Sheng Hu, and Xiaolin Wang. "“One-pot” synthesis of amidoxime via Pd-catalyzed cyanation and amidoximation." Organic & Biomolecular Chemistry 13, no. 9 (2015): 2541–45. http://dx.doi.org/10.1039/c4ob02456g.

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15

Gunathilake, Chamila, Joanna Górka, Shen Dai, and Mietek Jaroniec. "Amidoxime-modified mesoporous silica for uranium adsorption under seawater conditions." Journal of Materials Chemistry A 3, no. 21 (2015): 11650–59. http://dx.doi.org/10.1039/c5ta02863a.

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Amidoxime-modified ordered mesoporous silica (OMS) materials were prepared by co-condensation synthesis of OMS with cyanopropyl groups followed by their conversion into amidoxime groups, and tested for uranium adsorption under seawater conditions.

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16

Li, Zong Jie, Yu Hao Ma, Min Hu, Wei Min Kang, and Bo Wen Cheng. "Study on Heavy Metal Ion Adsorption of PAN-Amidoxime Nanofiber Nonwoven Material." Advanced Materials Research 1033-1034 (October 2014): 1072–76. http://dx.doi.org/10.4028/www.scientific.net/amr.1033-1034.1072.

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In this study, polyacrylonitrile-amidoxime nanofibers were prepared by combining the technique of electrospinning and chemical modification with hydroxylamine chloride. Before modified the Polyacrylonitrile (PAN) nanofibers were bonded with two layers Ethylene-Propylene Side By Side (ES) thermal bonded nonwovens to improve its mechanical strength. Subsequently, they were applied to adsorb copper ions. The results of FT-IR spectra and scanning electron microscope indicated that nitrile groups in PAN were partly converted into amidoxime groups and there were no serious cracks on the surface of PAN-amidoxime nanofibers. The adsorption data of Cu (II) ions was fitted roughly with the Langmuir isotherm. The maximal adsorption capacities of Cu (II) ions reached 176 mg/g.

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17

Papatriantafyllopoulou, Constantina, Leigh F. Jones, Tuyen D. Nguyen, Nuria Matamoros-Salvador, Luís Cunha-Silva, Filipe A. Almeida Paz, João Rocha, Marco Evangelisti, Euan K. Brechin, and Spyros P. Perlepes. "Using pyridine amidoximes in 3d-metal cluster chemistry: a novel ferromagnetic Ni12 complex from the use of pyridine-2-amidoxime." Dalton Transactions, no. 24 (2008): 3153. http://dx.doi.org/10.1039/b802927j.

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18

Yang, Chuting, Shuqi Pei, Baihua Chen, Lina Ye, Haizhu Yu, and Sheng Hu. "Density functional theory investigations on the binding modes of amidoximes with uranyl ions." Dalton Transactions 45, no. 7 (2016): 3120–29. http://dx.doi.org/10.1039/c5dt04645a.

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19

Li, Le, Nan Hu, Dexin Ding, Xin Xin, Yongdong Wang, Jinhua Xue, Hui Zhang, and Yan Tan. "Adsorption and recovery of U(vi) from low concentration uranium solution by amidoxime modified Aspergillus niger." RSC Advances 5, no. 81 (2015): 65827–39. http://dx.doi.org/10.1039/c5ra13516h.

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20

Sahyoun, Tanya, Axelle Arrault, and Raphaël Schneider. "Amidoximes and Oximes: Synthesis, Structure, and Their Key Role as NO Donors." Molecules 24, no. 13 (July 5, 2019): 2470. http://dx.doi.org/10.3390/molecules24132470.

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Nitric oxide (NO) is naturally synthesized in the human body and presents many beneficial biological effects; in particular on the cardiovascular system. Recently; many researchers tried to develop external sources to increase the NO level in the body; for example by using amidoximes and oximes which can be oxidized in vivo and release NO. In this review; the classical methods and most recent advances for the synthesis of both amidoximes and oximes are presented first. The isomers of amidoximes and oximes and their stabilities will also be described; (Z)-amidoximes and (Z)-oximes being usually the most energetically favorable isomers. This manuscript details also the biomimetic and biological pathways involved in the oxidation of amidoximes and oximes. The key role played by cytochrome P450 or other dihydronicotinamide-adenine dinucleotide phosphate (NADPH)-dependent reductase pathways is demonstrated. Finally, amidoximes and oximes exhibit important effects on the relaxation of both aortic and tracheal rings alongside with other effects as the decrease of the arterial pressure and of the thrombi formation

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21

Gunathilake, Chamila, Rohan S. Dassanayake, Noureddine Abidi, and Mietek Jaroniec. "Amidoxime-functionalized microcrystalline cellulose–mesoporous silica composites for carbon dioxide sorption at elevated temperatures." Journal of Materials Chemistry A 4, no. 13 (2016): 4808–19. http://dx.doi.org/10.1039/c6ta00261g.

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22

Janoš, Pavel, Oldřich Tokar, Marek Došek, Karel Mazanec, Petr Ryšánek, Martin Kormunda, Jiří Henych, and Pavel Janoš. "Amidoxime-functionalized bead cellulose for the decomposition of highly toxic organophosphates." RSC Advances 11, no. 29 (2021): 17976–84. http://dx.doi.org/10.1039/d1ra01125a.

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23

Boudakgi, Amer, Julia Jezierska, and Bozena N. Kolarz. "Amidoxime polymers - copper complexes." Makromolekulare Chemie. Macromolecular Symposia 59, no. 1 (June 1992): 343–52. http://dx.doi.org/10.1002/masy.19920590128.

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24

Bolotin, Dmitrii S., Mikhail V. Il'in, Alexander S. Novikov, Nadezhda A. Bokach, Vitalii V. Suslonov, and Vadim Yu Kukushkin. "Trinuclear (aminonitrone)ZnII complexes as key intermediates in zinc(ii)-mediated generation of 1,2,4-oxadiazoles from amidoximes and nitriles." New Journal of Chemistry 41, no. 5 (2017): 1940–52. http://dx.doi.org/10.1039/c6nj03508f.

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25

Shen, Jiang Nan, Jie Yu, Yue Xia Chu, Yong Zhou, and Wei Jun Chen. "Preparation and Uranium Sorption Performance of Amidoximated Polyacrylonitrile/Organobentonite Nano Composite." Advanced Materials Research 476-478 (February 2012): 2317–22. http://dx.doi.org/10.4028/www.scientific.net/amr.476-478.2317.

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Polyacrylonitrile/montmorillonite (PAN/MMT) nanocomposite with amidoxime functionality was prepared from acrylonitrile monomer(AN) and montmorillonite(MMT) through in-situ intercalation polymerization. Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction patter (XRD) were employed to characterize the obtained Na-MMT、Organ-MMT、PAN/MMT、APAN/MMT. Effects of preparing conditions of APAN/MMT on adsorption of uranium were investigated. The FT-IR spectra show that the new absorption band at 1653 cm-1( ) appears and the absorption band at 2243 cm-1(-CN) disappears on the spectrum of APAN/MMT, it indicates that the AN and MMT are successfully polymerized by in-situ polymerization and the PAN/MMT is amidoxime functionalized. The APAN/MMT nanocomposite completely lose the X-ray diffraction. The adsorption results show that the obtained APAN-MMT gives uranium adsorption capacity of 3.06 mg.g-1 under following conditions: uranium ion concentration of 10 mg/L, AM mass concentration of 80.0%, initiator of 4.5%, polymerization temperature of 70 °C，polymerization time of 3 h, pH of 7 and amidoxime functionalized reaction time of 2 h.

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26

Zhao, Yingguo, Xiangxue Wang, Jiaxing Li, and Xiangke Wang. "Amidoxime functionalization of mesoporous silica and its high removal of U(vi)." Polymer Chemistry 6, no. 30 (2015): 5376–84. http://dx.doi.org/10.1039/c5py00540j.

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27

Feng, Hongbo, Tao Hong, Shannon M. Mahurin, Konstantinos D. Vogiatzis, Kevin R. Gmernicki, Brian K. Long, Jimmy W. Mays, Alexei P. Sokolov, Nam-Goo Kang, and Tomonori Saito. "Gas separation mechanism of CO2 selective amidoxime-poly(1-trimethylsilyl-1-propyne) membranes." Polymer Chemistry 8, no. 21 (2017): 3341–50. http://dx.doi.org/10.1039/c7py00056a.

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28

Möhrle, Hans, and Jürgen Lessel. "Amidoxim-Nachbargruppen in Cyclodehydrierungsreaktionen." Chemische Berichte 125, no. 8 (August 1992): 1843–49. http://dx.doi.org/10.1002/cber.19921250810.

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29

Gou, Shaohua, Yanting Zhou, Ming Duan, Chuan Peng, Xiaoyan Yang, and Jin Wang. "Amidoxime-modified chitosan for pigment red 224 enrichment through reversible assembly." New Journal of Chemistry 42, no. 2 (2018): 1492–500. http://dx.doi.org/10.1039/c7nj04024e.

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30

Zhijiang, Cai, Jia Jianru, Zhang Qing, and Yang Haizheng. "Preparation of amidoxime surface-functionalized polyindole (ASFPI) nanofibers for Pb(ii) and Cd(ii) adsorption from aqueous solutions." RSC Advances 5, no. 100 (2015): 82310–23. http://dx.doi.org/10.1039/c5ra13253c.

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31

Dassanayake, Rohan S., Chamila Gunathilake, Arosha C. Dassanayake, Noureddine Abidi, and Mietek Jaroniec. "Amidoxime-functionalized nanocrystalline cellulose–mesoporous silica composites for carbon dioxide sorption at ambient and elevated temperatures." Journal of Materials Chemistry A 5, no. 16 (2017): 7462–73. http://dx.doi.org/10.1039/c7ta01038a.

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32

Qin, Zhen, Yiming Ren, Siwei Shi, Chuting Yang, Jie Yu, Shaofei Wang, Jianping Jia, Haizhu Yu, and Xiaolin Wang. "The enhanced uranyl–amidoxime binding by the electron-donating substituents." RSC Advances 7, no. 30 (2017): 18639–42. http://dx.doi.org/10.1039/c7ra00404d.

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33

Xu, Meiyun, Tao Wang, Peng Gao, Li Zhao, Lei Zhou, and Daoben Hua. "Highly fluorescent conjugated microporous polymers for concurrent adsorption and detection of uranium." Journal of Materials Chemistry A 7, no. 18 (2019): 11214–22. http://dx.doi.org/10.1039/c8ta11764k.

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34

Yang, Ziyan, Xiaoli Yang, Rui Hu, and Junfeng Wu. "Amidoxime Functionalized Mesoporous SBA-15 with Various Mesostructures for Highly Efficient Concentration of U(VI)." Nano 14, no. 02 (February 2019): 1950027. http://dx.doi.org/10.1142/s1793292019500279.

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Many current sorbents are limited for U(VI) concentration from aqueous solutions due to their inappropriate structures and surface chemistry. Herein, we report the rapid sorption of U(VI) with high capacities and selectivity by amidoxime modified ordered mesoporous SBA-15 with two typical morphologies (i.e., rods and plates) via a post-grafting method. Variables of the geochemical conditions (contact time, pH value, initial concentration, temperature and coexisting metal ions) are investigated. The results show that the mesostructures including morphologies and pore length of SBA-15 perform the dominant function for the fast sorption kinetics (10[Formula: see text]min for plates, 20[Formula: see text]min for rods), while the modified amidoxime groups make the excellent U(VI) sorption capacities (646.2[Formula: see text]mg[Formula: see text][Formula: see text][Formula: see text]g[Formula: see text] for plates, 499.8[Formula: see text]mg[Formula: see text][Formula: see text][Formula: see text]g[Formula: see text] for rods at pH 5.0 and [Formula: see text] 298.15[Formula: see text]K) and high selectivity possible. U(VI) adsorbed amidoxime-functionalized SBA can also be effectively regenerated by HCl solutions and reused well after six cycles.

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35

Jiao, Chenlu, Zhaofa Zhang, Jin Tao, Desuo Zhang, Yuyue Chen, and Hong Lin. "Synthesis of a poly(amidoxime-hydroxamic acid) cellulose derivative and its application in heavy metal ion removal." RSC Advances 7, no. 44 (2017): 27787–95. http://dx.doi.org/10.1039/c7ra03365f.

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36

Piechowicz, Marek, R. Chiarizia, and L. Soderholm. "Insight into selectivity: uptake studies of radionuclides 90Sr2+, 137Cs+, and 233UO22+ with bis-amidoxime polymers." Dalton Transactions 47, no. 15 (2018): 5348–58. http://dx.doi.org/10.1039/c7dt04935h.

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37

Qin, Hongyi, Yinhua Jin, Tao Gong, Yujin Cho, Chisung Ahn, Cheolmin Shin, Changgu Lee, and Taesung Kim. "A Conductive Copolymer Based on Graphene Oxide and Poly (amidoxime-pyrrole) for Adsorption of Uranium (VI)." Nano 11, no. 04 (April 2016): 1650045. http://dx.doi.org/10.1142/s1793292016500454.

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A novel conducting copolymer based on amidoxime groups, polypyrrole and graphene oxide was synthesized by in situ copolymerization by usin g two monomers. The monomer, amidoxime-pyrrole, was synthesized by amidoximation of 1-(2-cyanoethyl) pyrrole. The other monomer, GO-pyrrole, was prepared via esterification between –COOH of GO and –NH2 of 1-(3-aminopropyl) pyrrole. The conductive ability of the copolymer was based on conductive [Formula: see text]-conjugated system of polypyrrole backbone. The copolymer was able to be used as an effective sorption material for the preconcentration and recovery of uranium. The maximum of adsorption capacity for uranyl ion is as high as 149.57[Formula: see text]mg/g.

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38

Zheng, Liuchun, Shiping Zhang, Wen Cheng, Lijuan Zhang, Peipei Meng, Tao Zhang, Huajian Yu, and Dan Peng. "Theoretical calculations, molecular dynamics simulations and experimental investigation of the adsorption of cadmium(ii) on amidoxime-chelating cellulose." Journal of Materials Chemistry A 7, no. 22 (2019): 13714–26. http://dx.doi.org/10.1039/c9ta03622a.

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Lu, Xin, Shengnan He, Dongxiang Zhang, Alemtsehay Tesfay Reda, Cong Liu, Jian Feng, and Zhi Yang. "Synthesis and characterization of amidoxime modified calix[8]arene for adsorption of U(vi) in low concentration uranium solutions." RSC Advances 6, no. 103 (2016): 101087–97. http://dx.doi.org/10.1039/c6ra23764a.

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40

Ajmal, M., M. Siddiq, N. Aktas, and N. Sahiner. "Magnetic Co–Fe bimetallic nanoparticle containing modifiable microgels for the removal of heavy metal ions, organic dyes and herbicides from aqueous media." RSC Advances 5, no. 54 (2015): 43873–84. http://dx.doi.org/10.1039/c5ra05785j.

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41

Mehio, Nada, J. Casey Johnson, Sheng Dai, and Vyacheslav S. Bryantsev. "Theoretical study of the coordination behavior of formate and formamidoximate with dioxovanadium(v) cation: implications for selectivity towards uranyl." Physical Chemistry Chemical Physics 17, no. 47 (2015): 31715–26. http://dx.doi.org/10.1039/c5cp06165b.

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42

Li, Zhangnan, Qinghao Meng, Yajie Yang, Xiaoqin Zou, Ye Yuan, and Guangshan Zhu. "Constructing amidoxime-modified porous adsorbents with open architecture for cost-effective and efficient uranium extraction." Chemical Science 11, no. 18 (2020): 4747–52. http://dx.doi.org/10.1039/d0sc00249f.

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43

Ao, Junxuan, Hongjun Zhang, Xiao Xu, Fujia Yao, Lin Ma, Lan Zhang, Bangjiao Ye, Qingnuan Li, Lu Xu, and Hongjuan Ma. "A novel ion-imprinted amidoxime-functionalized UHMWPE fiber based on radiation-induced crosslinking for selective adsorption of uranium." RSC Advances 9, no. 49 (2019): 28588–97. http://dx.doi.org/10.1039/c9ra05440e.

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44

Wei, Yanqi, Jun Qian, Li Huang, and Daoben Hua. "Bifunctional polymeric microspheres for efficient uranium sorption from aqueous solution: synergistic interaction of positive charge and amidoxime group." RSC Advances 5, no. 79 (2015): 64286–92. http://dx.doi.org/10.1039/c5ra11578g.

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Tretyakova, Elena V., Elena V. Salimova, Victor N. Odinokov, and Usein M. Dzhemilev. "Synthesis of a Novel 1,2,4-Oxadiazole Diterpene from the Oxime of the Methyl Ester of 1β,13-Epoxydihydroquinopimaric Acid." Natural Product Communications 11, no. 1 (January 2016): 1934578X1601100. http://dx.doi.org/10.1177/1934578x1601100108.

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46

Li, Fengbo, Xiaoyu Li, Pu Cui, and Yubing Sun. "Retracted Article: Plasma-grafted amidoxime/metal–organic framework composites for the selective sequestration of U(vi)." Environmental Science: Nano 5, no. 8 (2018): 2000–2008. http://dx.doi.org/10.1039/c8en00583d.

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Sun, Yubing, Xiangxue Wang, Wencheng Song, Songhua Lu, Changlun Chen, and Xiangke Wang. "Retracted Article: Mechanistic insights into the decontamination of Th(iv) on graphene oxide-based composites by EXAFS and modeling techniques." Environmental Science: Nano 4, no. 1 (2017): 222–32. http://dx.doi.org/10.1039/c6en00470a.

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48

Ezzuldin M. Saber, Shihab, Siti Nurul Ain Md Jamil, Luqman Chuah Abdullah, Thomas Shean Yaw Choong, and Teo Ming Ting. "Insights into the p-nitrophenol adsorption by amidoxime-modified poly(acrylonitrile-co-acrylic acid): characterization, kinetics, isotherm, thermodynamic, regeneration and mechanism study." RSC Advances 11, no. 14 (2021): 8150–62. http://dx.doi.org/10.1039/d0ra10910j.

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Arshad, Sazmal Effendi, Zarina Amin, Perng Yang Puah, Mohd Sani Sarjadi, Baba Musta, and Md Lutfor Rahman. "Synthesis of Silica Gel Supported Amidoxime Ligand for Adsorption of Copper and Iron from Aqueous Media." Asian Journal of Chemistry 31, no. 12 (November 16, 2019): 3035–40. http://dx.doi.org/10.14233/ajchem.2019.22333.

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Organic-inorganic hybrid polymers have been demonstrated to be an efficient technique for the adsorption of pollutants present in water. Silica gel adsorbent has been applied in this field due to promising characters, such as thermally stable, reusability and high metal ion adsorption capacities. Here, silica gel supported acrylonitrile functional group (silica-APTS-DPN) was reacted with hydroxylamine to yield silica gel supported amidoxime ligand (SBA). All the functionalized silica gel adsorbents were characterized by FTIR. In terms of metal ions adsorption, SBA revealed good absorption capacities towards both copper (Cu2+) (172 mg g-1) and iron (Fe3+) (168 mg g-1) ions at pH 6 and followed the order of Cu2+ > Fe3+. Increased pH condition was beneficial for both metal ions adsorption. The adsorption kinetics of both ions followed the pseudo-first-order model within 0-60 min of adsorption time. Langmuir and Freundlich isotherm models were both applied to study the adsorption behaviour, Freundlich isotherm model (R2 > 0.99) proved to be a better fit, which propose that multilayer adsorption occurred on the silica gel grafted with amidoxime ligand. Finally, this study proved that the silica gel supported amidoxime ligand was successfully applied as an absorbent for the removal of both copper and iron from aqueous media.

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Gao, Jinxiang, Yihui Yuan, Qiuhan Yu, Bingjie Yan, Yongxin Qian, Jun Wen, Chunxin Ma, Shaohua Jiang, Xiaolin Wang, and Ning Wang. "Bio-inspired antibacterial cellulose paper–poly(amidoxime) composite hydrogel for highly efficient uranium(vi) capture from seawater." Chemical Communications 56, no. 28 (2020): 3935–38. http://dx.doi.org/10.1039/c9cc09936k.

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We have developed a new bio-inspired tough antibacterial cellulose paper–poly(amidoxime) composite hydrogel membrane with ultra-efficient uranium adsorption capacity and broad-spectrum antibacterial performance.

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