Browsing by Subject "Copper"

Article

Competition studies of L1-deferiprone with copper and iron. Possible implications on efficacy, toxicity and new therapeutic applications

Pashalidis, Ioannis; Kontoghiorghes, G. J. (2000)

Article

Copper(II) removal from aqueous solutions by adsorption on non-treated and chemically modified cactus fibres

Prodromou, Melpomeni; Pashalidis, Ioannis (2013)

The adsorption efficiency of a biomass by-product (cactus fibres) regarding the removal of copper(II) from aqueous solutions has been investigated before and after its chemical treatment. The chemical treatment of the ...

Article

Evidence for the presence of two conformations of the heme a 3-CuB pocket of cytochrome caa 3 from Thermus thermophilus

Pavlou, A.; Soulimane, T.; Pinakoulaki, Eftychia (2011)

Resonance Raman (RR) and "light" minus "dark" Fourier transform infrared (FTIR) difference spectra are reported for the CO-bound caa3 oxidase from Thermus thermophilus. Two Fe-CO stretching modes at 518 and 507 cm-1, the ...

Article

Fourier transform infrared (FTIR) and step-scan time-resolved FTIR spectroscopies reveal a unique active site in cytochrome caa3 oxidase from Thermus thermophilus

Pinakoulaki, Eftychia; Soulimane, T.; Varotsis, Constantinos (2002)

Fourier transform infrared (FTIR) and step-scan time-resolved FTIR difference spectra are reported for the [carbonmonoxy]cytochrome caa3 from Thermus thermophilus. A major C-O mode of heme a3 at 1958 cm-1 and two minor ...

Article

Initial use of 1,1′-oxalyldiimidazole for inorganic synthesis: Decomposition of the ligand as a means to the preparation of an imidazole- and oxalate(-2)-containing, 1D copper(II) complex

Stamatatos, Theocharis C.; Perlepes, Spyros P.; Raptopoulou, Catherine P.; Psycharis, Vassilis P.; Patrickios, Costas S.; Tasiopoulos, Anastasios J.; Boudalis, Athanassios K. (2009)

The use of 1,1′-oxalyldiimidazole, (im)COCO(im), for the synthesis of coordination complexes is explored for the first time. The [Cu2(O2CMe)4(H2O)2]/(im)COCO(im) reaction system in 96% EtOH yields the new, 1D coordination ...

Article

Interactions of hydroxycarbamide (Hydroxyurea) with Iron and copper: Implications on toxicity and therapeutic strategies

Konstantinou, E.; Pashalidis, Ioannis; Kolnagou, A.; Kontoghiorghes, G. J. (2011)

Presented at the 19th International Conference on Chelation, London, UK, 13-16 November 2009Preliminary spectrophotometric and potentiometric studies have shown that hydroxycarbamide or hydroxyurea (HU) can interact with ...

Article

Interesting copper(ii)-assisted transformations of 2-acetylpyridine and 2-benzoylpyridine

Kitos, Alexandros A.; Efthymiou, Constantinos G.; Manos, Manolis J.; Tasiopoulos, Anastasios J.; Nastopoulos, Vassilios; Escuer, Albert; Perlepes, Spyros P. (2016)

The reactions of various copper(ii) sources with 2-acetylpyridine, (py)(me)CO, and 2-benzoylpyridine, (py)(ph)CO, under strongly basic conditions have been studied and novel ligand transformations have been discovered. ...

Article

Molecular factors affecting the complex formation between deferiprone (L1) and Cu(II): Possible implications on efficacy and toxicity

Pashalidis, Ioannis; Kontoghiorghes, G. J. (2001)

Deferiprone (1,2-dimethyl-3-hydroxypyrid-4-one, L1, CAS 30652-11-0) is a new chelating drug used worldwide for the treatment of iron overloading conditions. Spectrophotometric and potentiometric measurements were carried ...

Book

The production and trade of Cypriot copper in the late bronze age :from ore to ingot :

Brempt Van, Lente (S. N., 2016)

Article

The protein effect in the structure of two ferryl-oxo intermediates at the same oxidation level in the heme copper binuclear center of cytochrome c oxidase

Pinakoulaki, Eftychia; Daskalakis, Vangelis; Ohta, T.; Richter, O. -M H.; Budiman, K.; Kitagawa, T.; Ludwig, B.; Varotsis, Constantinos (2013)

Identification of the intermediates and determination of their structures in the reduction of dioxygen to water by cytochrome c oxidase (CcO) are particularly important to understanding both O2 activation and proton pumping ...

Article

The remarkable effect of oxygen on the N2 selectivity of water catalytic denitrification by hydrogen

Constantinou, C. L.; Costa, Costas N.; Efstathiou, Angelos M. (2007)

The selective catalytic reduction of nitrates (NO3-) in pure water toward N2 formation by the use of gaseous H2 and in the presence of O2 (air) at 1 atm total pressure and 25°C has been investigated over Pd-Cu supported ...

Article

Sorption of Cu(II) and Eu(III) ions from aqueous solution by olive cake

Konstantinou, M.; Kolokassidou, K.; Pashalidis, Ioannis (2007)

The sorption of Cu(II) on olive cake, a biomass by-product of olive oil production, has been investigated by potentiometry at pH 6, I=0.1 M NaClO 4, 25∈°C and under atmospheric conditions. Numerical analysis of the ...

Article

Structural and thermal characterization of La5Ca 9Cu24O41 thin films grown by pulsed laser deposition on (1 1 0) SrTiO3 substrates

Svoukis, E.; Athanasopoulos, G. I.; Altantzis, T.; Lioutas, C.; Martin, R. S.; Revcolevschi, A.; Giapintzakis, John (2012)

In the present study stoichiometric, b-axis oriented La5Ca 9Cu24O41 thin films were grown by pulsed laser deposition on (1 1 0) SrTiO3 substrates in the temperature range 600-750 °C. High resolution transmission electron ...

Article

Structure and Magnetic Property Control of Copper Hydroxide Acetate by Non-Classical Crystallization

Song, R.; Krasia-Christoforou, T.; Debus, C.; Cölfen, H. (2017)

Copper hydroxide acetate (CHA), one layered hydroxide compound with tunable magnetism, attracts great interest because of its potential applications in memory devices. However, ferromagnetism for CHA is only demonstrated ...

Article

Studies on the interaction of olive cake and its hydrophylic extracts with polyvalent metal ions (Cu(II), Eu(III)) in aqueous solutions

Konstantinou, M.; Kolokassidou, K.; Pashalidis, Ioannis (2009)

The paper presents and discusses the chemical affinity of two different forms of natural organic matter (e.g. in solid (SOM) and soluble form (DOM)) for Cu2+ and Eu3+ ions. In the this study SOM is represented by olive ...

Article

Synthesis, structure, magnetic properties and aqueous solution characterization of p-hydroquinone and phenol iminodiacetate copper(ii) complexes

Stylianou, M.; Drouza, C.; Viskadourakis, Z.; Giapintzakis, John; Keramidas, A. D. (2008)

The reaction of Cu2+ acetate monohydrate with 2-[N,N′-bis(carboxymethyl)aminomethyl]-4-carboxyphenol (H 4cacp), 2-[N,N-bis(carboxymethyl)aminomethyl]hydroquinone (H 4cah) and the dinucleating 2,5-bis[N,N-bis(carboxymethy ...

Article

Synthesis, structure, magnetic properties and aqueous solution characterization of p-hydroquinone and phenol iminodiacetate copper(ii) complexes

Stylianou, Marios; Drouza, Chryssoula; Viskadourakis, Zacharias A.; Giapintzakis, Ioannis; Keramidas, Anastasios D. (2008)

The reaction of Cu2+ acetate monohydrate with 2-[N,N′-bis(carboxymethyl)aminomethyl]-4-carboxyphenol (H 4cacp), 2-[N,N-bis(carboxymethyl)aminomethyl]hydroquinone (H 4cah) and the dinucleating 2,5-bis[N,N-bis(carboxymethy ...

Article

Time-Resolved Resonance Raman and Time-Resolved Step-Scan FTIR Studies of Nitric Oxide Reductase from Paracoccus denitrificans: Comparison of the Heme b3-FeB Site to That of the Heme-CuB in Oxidases

Pinakoulaki, Eftychia; Varotsis, Constantinos (2003)

Time-resolved resonance Raman (TR3) and time-resolved step-scan (TRS2) FTIR spectroscopies have been used to probe the structural dynamics at the heme b3 proximal and distal sites after carbon monoxide photolysis from fully ...

Doctoral Thesis Open Access

Μελέτη προσρόφησης μεταλλοϊόντων (Cu(II), Eu(III), U(VI)) σε βιομάζα και ανόργανα στερεά

Κωνσταντίνου, Μαρία Χρ. (Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2008-05)

Αντικείμενο έρευνας της παρούσας Διδακτορικής Διατριβής, αποτελεί η προσρόφηση μεταλλοϊόντων σε επιφάνειες οργανικών και ανόργανων στερεών. Συγκεκριμένα, η παρούσα ερευνητική εργασία εστιάζεται στη μελέτη της προσρόφησης ...

Doctoral Thesis Open Access

Σύνθεση και δραστικότητα συμπλοκών του ουρανίου, του βαναδίου και του χαλκού με τριαζινικούς και αμιδικούς υποκαταστάτες

Χατζηθωμά, Σοφία Θ. (Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2019-10)

Στην παρούσα διδακτορική εργασία μελετήθηκαν η εκλεκτική συμπλοκοποίηση του ουρανίου από τριαζινικούς υποκαταστάτες και η ενεργοποίηση του οξυγόνου από αμιδικά και τριαζινικά πυριμιδικά σύμπλοκα του χαλκού και του βαναδίου. ...