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Academic literature on the topic 'Ruthenium-based complexes'

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Published: 4 June 2021
Last updated: 20 February 2023

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Journal articles on the topic "Ruthenium-based complexes"

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Motswainyana, William M., and Peter A. Ajibade. "Anticancer Activities of Mononuclear Ruthenium(II) Coordination Complexes." Advances in Chemistry 2015 (February 19, 2015): 1–21. http://dx.doi.org/10.1155/2015/859730.

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Ruthenium compounds are highly regarded as potential drug candidates. The compounds offer the potential of reduced toxicity and can be tolerated in vivo. The various oxidation states, different mechanism of action, and the ligand substitution kinetics of ruthenium compounds give them advantages over platinum-based complexes, thereby making them suitable for use in biological applications. Several studies have focused attention on the interaction between active ruthenium complexes and their possible biological targets. In this paper, we review several ruthenium compounds which reportedly possess promising cytotoxic profiles: from the discovery of highly active compounds imidazolium [trans-tetrachloro(dmso)(imidazole)ruthenate(III)] (NAMI-A), indazolium [trans-tetrachlorobis(1H-indazole)ruthenate(III)](KP1019), and sodium trans-[tetrachloridobis(1H-indazole)ruthenate(III)] (NKP-1339) to the recent work based on both inorganic and organometallic ruthenium(II) compounds. Half-sandwich organometallic ruthenium complexes offer the opportunity of derivatization at the arene moiety, while the three remaining coordination sites on the metal centre can be functionalised with various coordination groups of various monoligands. It is clear from the review that these mononuclear ruthenium(II) compounds represent a strongly emerging field of research that will soon culminate into several ruthenium based antitumor agents.
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Vatansever, Hafize Seda, Hilal Kabadayı, Mehmet Korkmaz, Feyzan Özdal-Kurt, Serdar Batıkan Kavukcu, and Hayati Türkmen. "Apoptotic Properties of Rutheinum Complexes on Different Type of Cancer Cell Lines." Proceedings 2, no. 25 (December 11, 2018): 1593. http://dx.doi.org/10.3390/proceedings2251593.

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Among chemotherapeutic agents, cisplatin and the other platinum-based drugs have occupied for 35 years an enviable position. The limitations of platinum-based drugs, dose dependent side effects and development of drug resistance mechanisms, have boosted the research for finding other metal-based drugs. Among metals, ruthenium is probably the one showing the greatest promises. Ruthenium (Ru) appears to be less toxic than platinum and several biological studies have indicated that ruthenium complexes possess diverse modes of action. The redox chemistry of ruthenium is rich and compatible with biological media, and the overall toxicity of ruthenium is lower than platinum, thus allowing higher doses of treatment. In this study we aimed that, analyses of different type of ruthenium complexes in cancer cell lines. Six Ru complexes were determined by elemental analysis, FTIR, NMR, UV-visible spectroscopy, electron density on the metal was measured by cyclic voltammetry. After that, the cellular properties of this complexes were analyses on PC-3, HT-29, Du-145 and Vero cell lines. DNA damage was analyzed H2AX staining, apoptotic cell analyses were performed flow cytometry and western blotting. After 48 h incubation of Ru complexes three of them more effective for cell lines. Especially Ru3 was more effective in cancer cell lines. Apoptotic pathway was triggered after Ru complexes incubation in PC-3, Du-145 and Ht-29 cancer cell lines. Our study suggest that Ru complexes may be used for cancer cell cytotoxicity as a drugs in patients.
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Zhang, Si-Qi, Li-Hua Gao, Hua Zhao, and Ke-Zhi Wang. "Recent Progress in Polynuclear Ruthenium Complex-Based DNA Binders/Structural Probes and Anticancer Agents." Current Medicinal Chemistry 27, no. 22 (June 30, 2020): 3735–52. http://dx.doi.org/10.2174/0929867326666181203143422.

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Ruthenium complexes have stood out by several mononuclear complexes which have entered into clinical trials, such as imidazolium [trans-RuCl4(1H-imidazole)(DMSO-S)] (NAMI-A) and ([Ru(II)(4,4'-dimethyl-2,2'-bipyridine)2-(2(2'-,2'':5'',2'''-terthiophene)-imidazo[4,5-f] [1,10]phenanthroline)] 2+) (TLD-1433), opening a new avenue for developing promising ruthenium-based anticancer drugs alternative to Cisplatin. Polynuclear ruthenium complexes were reported to exhibit synergistic and/or complementary effects: the enhanced DNA structural recognition and DNA binding as well as in vitro anticancer activities. This review overviews some representative polynuclear ruthenium complexes acting as DNA structural probes, DNA binders and in vitro anticancer agents, which were developed during last decades. These complexes are reviewed according to two main categories of homo-polynuclear and hetero-polynuclear complexes, each of which is further clarified into the metal centers linked by rigid and flexible bridging ligands. The perspective, challenges and future efforts for investigations into these exciting complexes are pointed out or suggested.
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Kanaoujiya, Rahul, and Shekhar Srivastava. "Ruthenium based antifungal compounds and their activity." Research Journal of Chemistry and Environment 25, no. 7 (June 25, 2021): 177–82. http://dx.doi.org/10.25303/257rjce17721.

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Ruthenium is recognized as a highly attractive alternative to platinum since the toxicity of many ruthenium compounds is lower and some complexes are quite selective for antifungal drugs. Ruthenium has various chemical properties these chemical properties are very useful for antifungal drug design. Ruthenium compounds have several types of advantages as antifungal drugs because of lower toxicity. . Ruthenium has unique properties making it of particularly use as fungal in drug design specially in antifungal drugs. Several types of ruthenium complexes and their antifungal activity standards are described here.
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Bond, AM, and M. Khalifa. "Accessibility of Formally Six-Coordinate Ruthenium(IV) Complexes Generated by Electrochemical Oxidation of Ruthenium(II) Dimethylglyoxime and Related Complexes Containing Phosphorus, Nitrogen or Oxygen Donor Axial Ligands." Australian Journal of Chemistry 41, no. 9 (1988): 1389. http://dx.doi.org/10.1071/ch9881389.

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The chemistry of higher valent ruthenium(IV) complexes has attracted considerable attention because of its possible relevance in catalytic processes and the fact that analogous iron complexes may be biologically important. In this work a range of RuII (N4)(X)(Y) complexes (N4 = nitrogen-based macrocycle or related ligand ; X, Y = axial ligands) has been prepared. It is shown that the presence of macrocyclic type ligands and suitable axial ligands leads to readily accessible six coordinate formally ruthenium(IV) complexes on the voltammetric time scale as ascertained by studies at platinum, gold, glassy carbon and mercury electrodes. Thus, dimethylgloxime complexes RuII ( dmgH )2(PPh3)2 and other complexes containing non- oxidizable macrocyclic type ligands readily undergo two chemically and electrochemically reversible one-electron oxidation processes to produce six coordinate ruthenium(III) and ruthenium(IV) complexes. The ruthenium(III) species are moderately stable on the synthetic time scale at ordinary temperature, whereas -78°C is required to generate low concentrations of the formally ruthenium(IV) complexes with a limited range of complexes. When the axial phosphine ligands are replaced by nitrogen and oxygen donors (N-methylimidazole , dimethyl sulfoxide , pyridine, etc.), the stability of the six-coordinate ruthenium(IV) complexes are significantly lowered as evidenced by the more complex voltammetry for the ruthenium(III)/(IV) oxidation process. Similarly, replacement of the (N4) macrocyclic type system by (N-O)2 (e.g. quinolin-8-ol as ligand ) lowers the stability of the ruthenium(IV) complexes. When the macrocyclic type ligand can itself be oxidized (e.g. benzoquinone dioxime as a ligand) four electrons can be transferred reversibly. In this case the oxidation processes are not readily assigned in terms of formal oxidation states although ruthenium(IV) still appears to be an accessible oxidation state. Electrochemical oxidation of the iron complexes, Fe( dmgH)2(P(Obu)3)2 and Fe(Pc)(P( OBu ),3)2 (Pc = phthalocyanine ), also produces two reversible one-electron oxidation processes, confirming that information derived from the more kinetically inert ruthenium systems may be applied to related iron systems on the voltammetric time scale and that macrocyclic type ligands stabilize both high oxidation state formally ruthenium(IV) and iron(IV) oxidation states.
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Pragti, Bidyut Kumar Kundu, and Suman Mukhopadhyay. "Target based chemotherapeutic advancement of ruthenium complexes." Coordination Chemistry Reviews 448 (December 2021): 214169. http://dx.doi.org/10.1016/j.ccr.2021.214169.

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Ghebreyessus, Kesete, and Stefan M. Cooper. "Photoswitchable Arylazopyrazole-Based Ruthenium(II) Arene Complexes." Organometallics 36, no. 17 (August 29, 2017): 3360–70. http://dx.doi.org/10.1021/acs.organomet.7b00493.

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Golbaghi, Golara, and Annie Castonguay. "Rationally Designed Ruthenium Complexes for Breast Cancer Therapy." Molecules 25, no. 2 (January 9, 2020): 265. http://dx.doi.org/10.3390/molecules25020265.

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Since the discovery of the anticancer potential of ruthenium-based complexes, several species were reported as promising candidates for the treatment of breast cancer, which accounts for the greatest number of new cases in women every year worldwide. Among these ruthenium complexes, species containing bioactive ligand(s) have attracted increasing attention due to their potential multitargeting properties, leading to anticancer drug candidates with a broader range of cellular targets/modes of action. This review of the literature aims at providing an overview of the rationally designed ruthenium-based complexes that have been reported to date for which ligands were carefully selected for the treatment of hormone receptor positive breast cancers (estrogen receptor (ER+) or progesterone receptor (PR+)). In addition, this brief survey highlights some of the most successful examples of ruthenium complexes reported for the treatment of triple negative breast cancer (TNBC), a highly aggressive type of cancer, regardless of if their ligands are known to have the ability to achieve a specific biological function.
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Spörler, Susanne, Frank Strinitz, Philipp Rodehutskors, Lisa Müller, Andreas R. Waterloo, Maximilian Dürr, Eike Hübner, Ivana Ivanović-Burmazović, Rik R. Tykwinski, and Nicolai Burzlaff. "Carbon-rich cyclopentadienyl ruthenium allenylidene complexes." New Journal of Chemistry 40, no. 7 (2016): 6127–34. http://dx.doi.org/10.1039/c5nj03556b.

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Voutyritsa, Errika, Ierasia Triandafillidi, Nikolaos V. Tzouras, Nikolaos F. Nikitas, Eleftherios K. Pefkianakis, Georgios C. Vougioukalakis, and Christoforos G. Kokotos. "Photocatalytic Atom Transfer Radical Addition to Olefins Utilizing Novel Photocatalysts." Molecules 24, no. 9 (April 26, 2019): 1644. http://dx.doi.org/10.3390/molecules24091644.

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Photocatalysis is a rapidly evolving area of research in modern organic synthesis. Among the traditional photocatalysts, metal-complexes based on ruthenium or iridium are the most common. Herein, we present the synthesis of two photoactive, ruthenium-based complexes bearing pyridine-quinoline or terpyridine ligands with extended aromatic conjugation. Our complexes were utilized in the atom transfer radical addition (ATRA) of haloalkanes to olefins, using bromoacetonitrile or bromotrichloromethane as the source of the alkyl group. The tailor-made ruthenium-based catalyst bearing the pyridine-quinoline bidentate ligand proved to be the best-performing photocatalyst, among a range of metal complexes and organocatalysts, efficiently catalyzing both reactions. These photocatalytic atom transfer protocols can be expanded into a broad scope of olefins. In both protocols, the photocatalytic reactions led to products in good to excellent isolated yields.
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Dissertations / Theses on the topic "Ruthenium-based complexes"

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Breivogel, Aaron [Verfasser]. "Ruthenium-based light harvesting complexes / Aaron Breivogel." Mainz : Universitätsbibliothek Mainz, 2014. http://d-nb.info/1058161962/34.

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Grange, Christopher S. "Near-infrared electrochromic dyes based upon ruthenium dioxolene complexes." Thesis, University of Sheffield, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.515245.

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Noack, Cassandra, and n/a. "Studies in Coordination Chemistry." Griffith University. School of Science, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20031030.145610.

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The research reported in this thesis was carried out in Brisbane, Australia and Calgary, Canada. The aim of the research conducted in Brisbane was to prepare a series of copper(I) and ruthenium(II) based complexes incorporating a hemilabile phosphine ligand and to determine whether or not these compounds possessed catalytic activity. The history, uses, properties and recent work incorporating hemilabile phosphine ligands is discussed in detail as well as the application of hemilabile ligands to atom transfer radical polymerization (ATRP) and the usefulness of the 'windscreen wiper' action of these ligands in polymerization. The literature synthesis and characterization of four hemilabile phosphine ligands is reported with modifications. The (2-chlorophenyl)diphenylphosphine ligand was prepared via a Grignard reaction giving a 11% yield. The (2-bromophenyl) diphenylphosphine ligand was prepared by reaction of 2-bromoiodobenzene with Ph2PSiMe3 in the presence of a palladium catalyst (MeCN)2PdCl2 which yielded 50% product. The 1-chloro-2-diphenylphosphinoethane ligand was prepared following the generation of a lithium diphenylphosphide which was added to 1,2-dichloroethane to give a 43% yield of product. The (2-benzoic-acid)diphenylphosphine ligand was prepared by hydrolysis of (2-methyl-ester-phenyl)diphenylphosphine. Following acidification of the methyl ester phosphine with HCl, the desired product was isolated in 88% yield. The synthesis and characterization of a series of copper(I) based complexes incorporating the prepared phosphine ligands involved reaction in CH3CN of the appropriate ligand with copper halides as starting material. Solution state 31P NMR and mass spectrometry were used to study many of these complexes in the solution state, whilst microanalysis, 31P CP MAS NMR and single crystal X-ray diffraction studies were used to study their solid state properties. The complexes of the type bis(2-halophenyl)diphenylphosphine copper halide were found to be three coordinate with non-chelating ligands and to be isostructural with the previously studied bis(2-methylphenyl)diphenylphosphine copper halide complexes. The synthesis and characterization of ruthenium(II) based complexes incorporating hemilabile phosphine ligands involved reaction of the appropriate ligands in MeOH with RuCl3.3H2O or RuCl2(DMSO)4 as the ruthenium source. Modes of characterization included solution state 31P NMR, mass spectrometry, microanalysis and single crystal X-ray diffraction studies. All ruthenium(II) based complexes were found to incorporate the hemilabile ligands in a chelating mode resulting in 6 coordinate structures. The preliminary polymerization testing of MMA in the presence of the copper(I) and ruthenium(II) based complexes has been reported. All complexes successfully polymerized the monomer and the resulting polyMMA showed polydispersity values ranging from moderate (3.1) to very high (6.7). Chapter 7 discusses research conducted over a 6 month period at the University of Calgary, Canada under an International Resident Fellowship award. This work involved the synthesis and characterization of scandium(III) and yttrium(III) based complexes incorporating a chelating amido-imine ligand, as potential olefin polymerization catalysts.
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Noack, Cassandra. "Studies in Coordination Chemistry." Thesis, Griffith University, 2003. http://hdl.handle.net/10072/366798.

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The research reported in this thesis was carried out in Brisbane, Australia and Calgary, Canada. The aim of the research conducted in Brisbane was to prepare a series of copper(I) and ruthenium(II) based complexes incorporating a hemilabile phosphine ligand and to determine whether or not these compounds possessed catalytic activity. The history, uses, properties and recent work incorporating hemilabile phosphine ligands is discussed in detail as well as the application of hemilabile ligands to atom transfer radical polymerization (ATRP) and the usefulness of the 'windscreen wiper' action of these ligands in polymerization. The literature synthesis and characterization of four hemilabile phosphine ligands is reported with modifications. The (2-chlorophenyl)diphenylphosphine ligand was prepared via a Grignard reaction giving a 11% yield. The (2-bromophenyl) diphenylphosphine ligand was prepared by reaction of 2-bromoiodobenzene with Ph2PSiMe3 in the presence of a palladium catalyst (MeCN)2PdCl2 which yielded 50% product. The 1-chloro-2-diphenylphosphinoethane ligand was prepared following the generation of a lithium diphenylphosphide which was added to 1,2-dichloroethane to give a 43% yield of product. The (2-benzoic-acid)diphenylphosphine ligand was prepared by hydrolysis of (2-methyl-ester-phenyl)diphenylphosphine. Following acidification of the methyl ester phosphine with HCl, the desired product was isolated in 88% yield. The synthesis and characterization of a series of copper(I) based complexes incorporating the prepared phosphine ligands involved reaction in CH3CN of the appropriate ligand with copper halides as starting material. Solution state 31P NMR and mass spectrometry were used to study many of these complexes in the solution state, whilst microanalysis, 31P CP MAS NMR and single crystal X-ray diffraction studies were used to study their solid state properties. The complexes of the type bis(2-halophenyl)diphenylphosphine copper halide were found to be three coordinate with non-chelating ligands and to be isostructural with the previously studied bis(2-methylphenyl)diphenylphosphine copper halide complexes. The synthesis and characterization of ruthenium(II) based complexes incorporating hemilabile phosphine ligands involved reaction of the appropriate ligands in MeOH with RuCl3.3H2O or RuCl2(DMSO)4 as the ruthenium source. Modes of characterization included solution state 31P NMR, mass spectrometry, microanalysis and single crystal X-ray diffraction studies. All ruthenium(II) based complexes were found to incorporate the hemilabile ligands in a chelating mode resulting in 6 coordinate structures. The preliminary polymerization testing of MMA in the presence of the copper(I) and ruthenium(II) based complexes has been reported. All complexes successfully polymerized the monomer and the resulting polyMMA showed polydispersity values ranging from moderate (3.1) to very high (6.7). Chapter 7 discusses research conducted over a 6 month period at the University of Calgary, Canada under an International Resident Fellowship award. This work involved the synthesis and characterization of scandium(III) and yttrium(III) based complexes incorporating a chelating amido-imine ligand, as potential olefin polymerization catalysts.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Science
Faculty of Science
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Shamran, Mohammed Hasan. "Photoisomerization and photo-induced nitric oxide release in ruthenium nitrosyl complexes with pyridyl and bipyridyl based ligands." Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30123.

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Les complexes de ruthénium à ligand nitrosyle sont très connus pour posséder des propriétés photochromes qui résultent des changements de coordination du fragment Ru-NO sous irradiation à basse température. Ce phénomène comporte de nombreuses applications telles que le stockage optique de données. Ces complexes ont aussi la capacité de délivrer l'oxyde nitrique de manière photo-contrôlée. Cela présente un grand intérêt car NO est impliqué dans de très nombreuses réactions physiologiques. Cette thèse est consacrée à l'étude des facteurs qui influencent les propriétés photochromes et la photolibération de NO dans les complexes de nitrosyle de ruthénium avec des ligands pyridine ou bipyridine. Le premier chapitre de cette thèse se concentre sur une étude bibliographique approfondie. Dans le second chapitre, la synthèse et la caractérisation des complexes de nitrosyle de ruthénium avec des ligands pyridine de formule trans(X, NO)-[Ru(R-py)4XNO](PF6)2 (R-py = pyridine, 4-picoline, 3-picoline, 4-vinylpyridine, 3- carboxaldéhydepyridine et 4-chloropyridine, X= Cl, Br, I ou OH) sont étudiés. Dans le troisième chapitre, la synthèse et la caractérisation des complexes de ruthénium nitrosyle avec le ligand bipyridine de formule cis(X, NO)-[Ru(L)2XNO] Y2, (L= 2,2'-bipyridine ou 4,4'-diméthyl-2,2'-bipyridine, X= Cl, NO2 ou Br, Y= PF6 ou Br) sont discutés. Dans le quatrième chapitre, nous présentons les résultats sur l'étude de photoisomérisation des complexes présentés dans les chapitres précédents. La conversion Ru-NO/Ru-ON est estimée par spectroscopie infrarouge après irradiation par une lumière bleue à basse température à l'état solide. Le taux de population Ru-NO/Ru-ON varie entre 1 et 76%. Nous avons étudié les effets de la position cis/trans et de la nature du ligand par rapport au nitrosyle, des substituants (groupe donneur ou attracteur d'électrons) sur le ligand pyridine ou bipyridine sur la réponse photochrome. Des calculs théoriques par DFT ont permis de rendre compte des propriétés photochromes différentes entre le complexe parent avec un ligand pyridine et le ligand 4-chloropyridine. Le cinquième chapitre est consacré à l'étude de la photolibération de NO. Le rendement quantique (NO) se trouve dans la gamme 0.2-0.7. Le test de Griess a confirmé le relargage de NO
We are interested in the photoactive properties of ruthenium nitrosyl complexes. Ruthenium nitrosyl complexes are well known to possess photochromic properties which arise from the coordination changes of Ru-NO under irradiation at low temperature. This phenomenon has many applications such as high optical data storage and sensors. Ruthenium nitrosyl complexes are also very promising candidates because the photochemical delivery of bioactive small molecules such as nitric oxide (NO•) from ruthenium nitrosyl complexes presents the possibility of controlling the location, timing and dosage of NO• to physiological targets. Nitric oxide photorelease have gained wide attention after the discovery of several nitric oxide physiological functions and its involvement in different cellular processes. This thesis was devoted to studying the factors which affect the photochromic properties and NO photorelease in ruthenium nitrosyl complexes with pyridyl or bipyridyl based ligands. The first chapter of this thesis focuses on a survey of the literature related to both photoisomerization and photorelease phenomena. In chapter 2, the synthesis and characterization of ruthenium nitrosyl complexes with pyridyl based ligands with the formula trans(X,NO)-[Ru(R-py)4XNO](PF6)2, (where R-py is pyridine, 4-picoline, 3-picoline, 4-vinylpyridine, 3-carboxaldhydepyridine and 4-chloropyridine, X=Cl, Br, I or OH) are discussed. In chapter 3, the synthesis and characterization of ruthenium nitrosyl complexes with bipyridyl based ligand with formula cis(X,NO)-[Ru(L)2XNO]Y2, (L= 2,2'-bipyridine or 4,4'-dimethyl-2,2'-bipyridine, X=Cl, NO2 or Br, Y=PF6 or Br) are discussed. In chapter 4, we present the results of our investigations of nitrosyl ligand photoisomerization in Ru-NO with pyridyl and bipyridyl ligands. The conversion of Ru-NO to Ru-ON conformation was estimated by infrared spectroscopy upon irradiation by blue light at low temperature in the solid state. The values are ranged between 1-76%. We studied the effects of cis/trans ligand position to nitrosyl and the nature of substituents on pyridine or bipyridine ligand (electron donating or withdrawing group). We used theoretical calculations (DFT) to explain the different photochromic properties between parent complex with a pyridine ligand and 4-chloropyridine ligand. The fifth chapter is devoted to the study of NO photorelease. The quantum yield (NO) was estimated in the range of 0.2-0.7. Griess test was used to confirm NO delivery
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Polapally, Mamatha. "Synthesis,Structure and Properties of Ruthenium Polypyridyl Metalloligand Based Metal-Organic Frameworks." TopSCHOLAR®, 2017. https://digitalcommons.wku.edu/theses/2035.

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Metal-organic frameworks (MOFs) have been extensively studied because of their amazing applications in gas storage, purification, photocatalysis, chemical sensing, and imaging techniques. Ruthenium polypyridyl complexes have been broadly considered as photosensitizers for the conversion of solar energy and photoelectronic materials. With this aspect, we have synthesized three new ruthenium polypyridyl based MOFs ([Ru(H2bpc)Cu(bpc)(Hbpc)2(H2O)]·5H2O (1), [Ru(H2bpc)(Fe(bpc)(Hbpc)2(H2O)2]·6H2O (2) and [Ru(H2bpc)Ni(bpc)(Hbpc)2(H2O)2]·6H2O (3)) from ruthenium(III) chloride, bpc (2,2’- bipyridine-4,4’-dicarboxylic acid) ligand, and 3d M(II) metal ions (M(II)= Cu(II), Fe(II), Ni(II)). These MOFs were synthesized under hydro or solvothermal conditions by using water, ethanol or methanol as solvents. The crystal structures of the new compounds contains zigzag chains of [Ru(bpc)3]n- complex ions linked by Cu, Fe or Ni complex ions individually. Above synthesized crystal structures were characterizing by single-crystal Xray and powder X-ray diffraction strategies, UV-vis and IR spectroscopy. Thermal properties were determining by thermogravimetric analysis. Magnetic properties were also studied.
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Tsai, Jang-Shiang 1972. "Evaluation of solid-state light-emitting devices based on the tris-chelated ruthenium (II) complexes." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/7974.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2003.
Includes bibliographical references (leaves 39-44).
Organic light-emitting devices have the potential to create a new range of applications. They are versatile because their physical properties (color, emission efficiency) can be fine-tuned by the manipulation of their chemical structures. In this work, the novel technology of Ru(bpy)t-based devices was evaluated in the feasibility of commercializatjon. An overview was presented on current development and competing technologies within research and industry with regard to advantages and drawbacks of the technology of various organic light-emitting devices. The basic principles concerning the light emission from various devices were also presented. An intellectual property search on the technologies of the organic light-emitting devices revealed there was no patent to block the technology of organic light-emitting device based on Ru(bpy)t complex. A brief economic analysis of Ru(bpy)t-based device was proposed for targeting the display markets.
by Tsai Jang-Shiang.
M.Eng.
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Govender, Preshendren. "Synthesis, characterization and anticancer studies of multinuclear ruthenium(II) arene complexes based on a dendritic scaffold." Master's thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/10568.

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Includes bibliographical references.
A series of monodentate (N-) and chelating bidentate (N,N-, N,O-), monomeric and dendritic ligands based on a poly(propyleneimine) dendrimer scaffold were synthesized via Schiff base condensation reactions of the relevant amine and appropriate aldehydes. These reactions yielded air- and moisture-stable oils or solids. These ligands contained pyridyl-imine moieties and salicylaldimine moieties. These compounds were isolated in good yields and characterized using standard spectroscopic and spectrometric, analytical techniques.
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Chen, Zhijun [Verfasser]. "Near-infrared-sensitive materials based on photoresponsive ruthenium(II) polypyridyl complexes-functionalized lanthanide-doped upconverting nanoparticles / Zhijun Chen." Mainz : Universitätsbibliothek Mainz, 2017. http://d-nb.info/1130809110/34.

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Sudding, Lara Cathryn. "Synthesis and biological evaluation of polynuclear cyclometalated ruthenium, rhodium and iridium complexes based on a PPI dendritic scaffold." Master's thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/9198.

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A series of chelating, bidentate (C,N-) monomeric and dendritic ligands based on a poly(propyleneimine) dendritic scaffold were synthesized via a Schiff-base condensation reaction of the relevant amine and either naphthaldehyde or benzaldehyde. These reactions yielded air- and moisture-stable solids or oils. These compounds were isolated in good yields and characterized using standard spectroscopic and analytical techniques.
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Book chapters on the topic "Ruthenium-based complexes"

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Matos, António, Filipa Mendes, Andreia Valente, Tânia Morais, Ana Isabel Tomaz, Philippe Zinck, Maria Helena Garcia, Manuel Bicho, and Fernanda Marques. "Ruthenium-Based Anticancer Compounds: Insights into Their Cellular Targeting and Mechanism of Action." In Ruthenium Complexes, 201–19. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2017. http://dx.doi.org/10.1002/9783527695225.ch10.

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Filevich, Oscar, Leonardo Zayat, Luis M. Baraldo, and Roberto Etchenique. "Long Wavelength Phototriggering: Ruthenium-Based Caged Compounds." In Luminescent and Photoactive Transition Metal Complexes as Biomolecular Probes and Cellular Reagents, 47–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/430_2014_169.

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Wu, Miaomiao, Zexi Zhang, Jiaxi Yong, Peer M. Schenk, Dihua Tian, Zhi Ping Xu, and Run Zhang. "Determination and Imaging of Small Biomolecules and Ions Using Ruthenium(II) Complex-Based Chemosensors." In Metal Ligand Chromophores for Bioassays, 199–243. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-19863-2_6.

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AbstractLuminescence chemosensors are one of the most useful tools for the determination and imaging of small biomolecules and ions in situ in real time. Based on the unique photo-physical/-chemical properties of ruthenium(II) (Ru(II)) complexes, the development of Ru(II) complex-based chemosensors has attracted increasing attention in recent years, and thus many Ru(II) complexes have been designed and synthesized for the detection of ions and small biomolecules in biological and environmental samples. In this work, we summarize the research advances in the development of Ru(II) complex-based chemosensors for the determination of ions and small biomolecules, including anions, metal ions, reactive biomolecules and amino acids, with a particular focus on binding/reaction-based chemosensors for the investigation of intracellular analytes’ evolution through luminescence analysis and imaging. The advances, challenges and future research directions in the development of Ru(II) complex-based chemosensors are also discussed.
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Stefak, Roman, Jorge Echeverria, Saw-Wai Hla, Christian Joachim, and Gwénaël Rapenne. "Single-Molecular Motors and Gears Based on Star-shaped Ruthenium Complexes." In Single Molecular Machines and Motors, 109–26. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13872-5_7.

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Hofmeier, Harald, Marielle Wouters, Daan Wouters, and Ulrich S. Schubert. "Thermal Stability, Rheology, and Morphology of Metallosupramolecular Polymers Based onbis-Terpyridine-Ruthenium(II) Complexes." In ACS Symposium Series, 113–25. Washington, DC: American Chemical Society, 2006. http://dx.doi.org/10.1021/bk-2006-0928.ch009.

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Pettinari, Claudio, Riccardo Pettinari, Corrado Di Nicola, and Fabio Marchetti. "Half-Sandwich Rhodium(III), Iridium(III), and Ruthenium(II) Complexes with Ancillary Pyrazole-Based Ligands." In Advances in Organometallic Chemistry and Catalysis, 269–84. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118742952.ch21.

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Lentzen, Olivier, Cécile Moucheron, and Andrée Kirsch-De Mesmaeker. "44Ru Perspectives of Ruthenium Complexes in Cancer Therapy." In Metallotherapeutic Drugs and Metal-Based Diagnostic Agents, 359–78. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470864052.ch19.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of cyanide-bridged array of ruthenium atoms based on vanene-iron complex." In Magnetic Properties of Paramagnetic Compounds, 660–61. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54231-6_355.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of cyanide-bridged array of ruthenium atoms based on salene-iron complex." In Magnetic Properties of Paramagnetic Compounds, 664–65. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54231-6_357.

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Li, Huayang, and Issifu Harruna. "Functionalization of Carbon Nanocomposites with Ruthenium Bipyridine and Terpyridine Complex." In Handbook of Research on Nanoscience, Nanotechnology, and Advanced Materials, 26–61. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-5824-0.ch002.

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Ruthenium bipyridine or terpyridine complexes functionalized carbon-based nanocomposites have special properties in the electromagnetic and photochemical research field. The aims of this chapter include development of functionalized fullerene, carbon nanotubes, and graphene with ruthenium complex and characterization of their nanostructural properties. Such nanocomposites can be accomplished using either covalent or non-covalent functionalization methods.
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Conference papers on the topic "Ruthenium-based complexes"

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Zemskii, V. I., A. V. Veresov, and Yu L. Kolesnikov. "Luminescence sensors based on ruthenium complexes." In The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/cleo_europe.1994.cthi40.

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The application of luminophores as molecular informators of contents or conditions of environment is a promising trend in sensor design. This trend received a large development effort in the last few years, particularly in the area of fiber optic sensors.1
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Xu, Wenying, John Mehlmann, Jason Rice, James E. Collins, Cassandra L. Fraser, James N. Demas, Benjamin A. DeGraff, Jr., and Mauro Bassetti. "pH sensors based on luminescent ruthenium(II) alpha-diimine complexes with diethylaminomethyl sensing groups." In Photonics East (ISAM, VVDC, IEMB), edited by Tuan Vo-Dinh and Robert L. Spellicy. SPIE, 1999. http://dx.doi.org/10.1117/12.339027.

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Santos, José V. Dos, Sergio R. de Lazaro, Luis H. S. Lacerda, Renan A. P. Ribeiro, Flavia Marszaukowski, Ivelise D. L. Guimarães, Karen Wohnrath, and Rene Boere. "Theoretical simulation for the [6-p-cymene)RuCl2(meapy)] complex." In VIII Simpósio de Estrutura Eletrônica e Dinâmica Molecular. Universidade de Brasília, 2020. http://dx.doi.org/10.21826/viiiseedmol2020196.

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Anticarcinogen compounds are extensively investigated in current days. Among the potential alternatives to develop effective drugs for this purpose, stands out the ruthenium (II) complex presents satisfactory anti-tumor activity. In particular, this kind of compounds has been investigated as a possible substitute for Platinum-based drugs. However, Ru (II) complexes need more investigation to understand the ligands' effect on biological environments, such as cytotoxicity, metabolism, accumulation on tumor issues, and others. Therefore, in this work, a robust DFT/B3LYP theoretical investigation was performed using GAUSSIAN09 in order to investigate the effects of the water solvent on structural and electronic properties of the (6-p-cymene)Ru(II)Cl2(meapy) complex. The results indicate meaningful structural changes regarding gas phase due to water solvation. Likewise, the electronic results suggest the minimization of the frontier orbitals energy by water solvent while the molecular orbital composition is not affected.
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Antonichen, Magno R., Sergio R. de Lazaro, Luis H. S. Lacerda, Flavia Marszaukowski, Ivelise D. L. Guimarães, Karen Wohnrath, and Rene Boere. "DFT simulations for the [6-p-cymene)RuCl2(apy)] complex." In VIII Simpósio de Estrutura Eletrônica e Dinâmica Molecular. Universidade de Brasília, 2020. http://dx.doi.org/10.21826/viiiseedmol202097.

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Anticarcinogen compounds are extensively investigated in current days. Among the potential alternatives to develop effective drugs for this purpose, stands out the ruthenium (II) complex presents satisfactory anti-tumor activity. In particular, this kind of compounds has been investigated as a possible substitute for Platinum-based drugs. However, Ru (II) complexes need more investigation to understand the ligands' effect on biological environments, such as cytotoxicity, metabolism, accumulation on tumor issues, and others. Therefore, in this work, a robust DFT/B3LYP theoretical investigation was performed using GAUSSIAN09 in order to investigate the effects of the +1 and -1 charges on structural and electronic properties of the (6-p-cymene)Ru(II)Cl2(apy) complex. The structure evaluation indicates that +1 charged complex has a slight reduction on the Ru – cymene, Ru – Cl and Ru – apy bond lengths regarding the neutral complex. On the other hand, -1 charged complex shows bond lengths very similar to the neutral compound, except by a very large distance between Ru and one Cl atom, indicating that such atoms were expelled.
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Diniz, Júlia R., Karlla M. C. Ferreira, Paulo A. Z. Suarez, and Brenno A. D. Neto. "Synthesis of a novel imidazolium-based ionically-tagged ruthenium complex." In 14th Brazilian Meeting on Organic Synthesis. São Paulo: Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0025-1.

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Murtaza, Zakir, and Joseph R. Lakowicz. "Lifetime-based sensing of glucose using luminescent ruthenium (II) metal complex." In BiOS '99 International Biomedical Optics Symposium, edited by Joseph R. Lakowicz, Steven A. Soper, and Richard B. Thompson. SPIE, 1999. http://dx.doi.org/10.1117/12.347552.

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Zhang, Peng, Shuai Ruan, Run Zhang, Benjamin Pullen, Xiaozhou Zhang, Malcolm Stuart Purdey, Heike Ebendorff-Heidepriem, et al. "Nitric oxide sensitive optic fiber sensor based on immobilized ruthenium(II) complex." In Asia-Pacific Optical Sensors Conference. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/apos.2016.w3a.5.

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Lilge, Lothar D., Manjunatha Ankathatti Munegowda, Carl Fisher, and Arkady Mandel. "Efficacy of ruthenium coordination complex based Rutherrin in a pre-clinical rat glioblastoma (GBM) model (Conference Presentation)." In 17th International Photodynamic Association World Congress, edited by Tayyaba Hasan. SPIE, 2019. http://dx.doi.org/10.1117/12.2525608.

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Zhao, Mengying, Yanxu Zhang, and Duobin Chao. "Visible-light-promoted Decarboxylation of Carboxylic Acids by A Supramolecular Complex Based on Ruthenium(II) and Copper(II)." In 2017 International Conference on Material Science, Energy and Environmental Engineering (MSEEE 2017). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/mseee-17.2017.48.

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Khan, Aamir A., Susan K. Fullerton-Shirey, Genevieve D. Vigil, Yide Zhang, and Scott S. Howard. "Highly Stable Two-photon Oxygen Imaging Probe Based on a Ruthenium-Complex Encapsulated in a Silica-coated Nanomicelle." In CLEO: Applications and Technology. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/cleo_at.2016.atu4o.3.

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