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Lee GY, Lee SH, Jo IH, Cho CM, Shostak S, Ryu JY, Park BK, Son SU, Choi CH, Eom T, Kim JH, Chung TM. Amidoxime-Containing Zr and Hf Atomic Layer Deposition Precursors for Metal Oxide Thin Films. Inorg Chem 2024; 63:537-547. [PMID: 38108625 DOI: 10.1021/acs.inorgchem.3c03455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
In this article, we discuss the synthesis of eight novel zirconium and hafnium complexes containing amidoxime ligands as potential precursors for atomic layer deposition (ALD). Two amidoximes, viz., (E)-N'-hydroxy-N,N-dimethylacetimidamide (mdaoH) and (Z)-N'-hydroxy-N,N-dimethylpivalimidamide (tdaoH), along with their Zr and Hf homoleptic complexes, Zr(mdao)4 (1), Hf(mdao)4 (2), Zr(tdao)4 (3), and Hf(tdao)4 (4) were prepared. We further synthesized heteroleptic compounds with different physical properties by introducing cyclopentadienyl (Cp) ligand, namely, CpZr(mdao)3 (5), CpHf(mdao)3 (6), CpZr(tdao)3 (7), and CpHf(tdao)3 (8). Thermogravimetric analysis was used for the assessment of the evaporation characteristics of complexes 1, 2, 5, and 6, and it revealed multistep weight losses with high residues. On the other hand, the thermogravimetric analysis curves of complexes 3, 4, 7, and 8 comprising tdao ligands revealed single-step weight losses with moderate residues. Single-crystal X-ray diffraction studies of complexes 1, 3, and 7 showed that all of the complexes have monomeric molecular structures. Complex 7 exhibited a low melting point (75 °C), good volatility, and high thermal stability compared with other complexes. Therefore, an atomic layer deposition process for the growth of ZrO2 was developed by using ZrCp(tdao)3 (7) as a novel precursor.
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Affiliation(s)
- Ga Yeon Lee
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Seung-Hun Lee
- Department of Advanced Materials Engineering, Hanbat National University, Daejeon 34158, Republic of Korea
| | - In Ho Jo
- Department of Advanced Materials Engineering, Hanbat National University, Daejeon 34158, Republic of Korea
| | - Chan-Mi Cho
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Svetlana Shostak
- Department of Chemistry, Kyungpook National University, Daegu 41566, South Korea
| | - Ji Yeon Ryu
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Bo Keun Park
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
- Department of Chemical Convergence Materials, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Seung Uk Son
- Department of Chemistry, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do 16419, Republic of Korea
| | - Cheol Ho Choi
- Department of Chemistry, Kyungpook National University, Daegu 41566, South Korea
| | - Taeyong Eom
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Jeong Hwan Kim
- Department of Advanced Materials Engineering, Hanbat National University, Daejeon 34158, Republic of Korea
| | - Taek-Mo Chung
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
- Department of Chemical Convergence Materials, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
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Kim J, Thomas SN. Opportunities for Nitric Oxide in Potentiating Cancer Immunotherapy. Pharmacol Rev 2022; 74:1146-1175. [PMID: 36180108 PMCID: PMC9553106 DOI: 10.1124/pharmrev.121.000500] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 05/15/2022] [Accepted: 07/05/2022] [Indexed: 11/22/2022] Open
Abstract
Despite nearly 30 years of development and recent highlights of nitric oxide (NO) donors and NO delivery systems in anticancer therapy, the limited understanding of exogenous NO's effects on the immune system has prevented their advancement into clinical use. In particular, the effects of exogenously delivered NO differing from that of endogenous NO has obscured how the potential and functions of NO in anticancer therapy may be estimated and exploited despite the accumulating evidence of NO's cancer therapy-potentiating effects on the immune system. After introducing their fundamentals and characteristics, this review discusses the current mechanistic understanding of NO donors and delivery systems in modulating the immunogenicity of cancer cells as well as the differentiation and functions of innate and adaptive immune cells. Lastly, the potential for the complex modulatory effects of NO with the immune system to be leveraged for therapeutic applications is discussed in the context of recent advancements in the implementation of NO delivery systems for anticancer immunotherapy applications. SIGNIFICANCE STATEMENT: Despite a 30-year history and recent highlights of nitric oxide (NO) donors and delivery systems as anticancer therapeutics, their clinical translation has been limited. Increasing evidence of the complex interactions between NO and the immune system has revealed both the potential and hurdles in their clinical translation. This review summarizes the effects of exogenous NO on cancer and immune cells in vitro and elaborates these effects in the context of recent reports exploiting NO delivery systems in vivo in cancer therapy applications.
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Affiliation(s)
- Jihoon Kim
- Parker H. Petit Institute for Bioengineering and Bioscience (J.K., S.N.T.), George W. Woodruff School of Mechanical Engineering (J.K., S.N.T.), and Wallace H. Coulter Department of Biomedical Engineering (S.N.T.), Georgia Institute of Technology, Atlanta, Georgia; Winship Cancer Institute, Emory University School of Medicine, Atlanta, Georgia (S.N.T.); and Division of Biological Science and Technology, Yonsei University, Wonju, South Korea (J.K.)
| | - Susan N Thomas
- Parker H. Petit Institute for Bioengineering and Bioscience (J.K., S.N.T.), George W. Woodruff School of Mechanical Engineering (J.K., S.N.T.), and Wallace H. Coulter Department of Biomedical Engineering (S.N.T.), Georgia Institute of Technology, Atlanta, Georgia; Winship Cancer Institute, Emory University School of Medicine, Atlanta, Georgia (S.N.T.); and Division of Biological Science and Technology, Yonsei University, Wonju, South Korea (J.K.)
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Sahyoun T, Arrault A, Schneider R. Amidoximes and Oximes: Synthesis, Structure, and Their Key Role as NO Donors. Molecules 2019; 24:molecules24132470. [PMID: 31284390 PMCID: PMC6651102 DOI: 10.3390/molecules24132470] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/02/2019] [Accepted: 07/02/2019] [Indexed: 01/26/2023] Open
Abstract
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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Affiliation(s)
- Tanya Sahyoun
- Laboratoire de Chimie Physique Macromoléculaire, Université de Lorraine, CNRS, LCPM, F-54000 Nancy, France
| | - Axelle Arrault
- Laboratoire de Chimie Physique Macromoléculaire, Université de Lorraine, CNRS, LCPM, F-54000 Nancy, France.
| | - Raphaël Schneider
- Laboratoire Réactions et Génie des Procédés, Université de Lorraine, CNRS, LRGP, F-54000 Nancy, France.
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Decato DA, Berryman OB. Structural and Computational Characterization of a Bridging Zwitterionic-Amidoxime Uranyl Complex. Org Chem Front 2019; 6:1038-1043. [PMID: 31086674 DOI: 10.1039/c9qo00267g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A bridging (μ2) neutral zwitterionic amidoxime binding mode previously unobserved between amidoximes and uranyl is reported and compared to other uranyl amidoxime complexes. Density functional theory computations show the dinuclear complex exhibits a shallow potential energy surface allowing for facile inclusion of a nonbonding water molecule in the solid-state.
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Affiliation(s)
- Daniel A Decato
- Department of Chemistry and Biochemistry, University of Montana, 32 Campus Drive, Missoula, Montana, United States, 59812
| | - Orion B Berryman
- Department of Chemistry and Biochemistry, University of Montana, 32 Campus Drive, Missoula, Montana, United States, 59812
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