Browsing by Subject "conformation"

Article

Aerial Oxidation of a VIV-Iminopyridine Hydroquinonate Complex: A Trap for the VIV-Semiquinonate Radical Intermediate

Stylianou, M.; Drouza, C.; Giapintzakis, John; Athanasopoulos, G. I.; Keramidas, A. D. (2015)

The reaction of 2,5-bis[N,N′-bis(2-pyridyl-aminomethyl)aminomethyl]-p-hydroquinone (H2bpymah) with VO2+ salts in acetonitrile or water at a low pH (2.2-3.5) results in the isolation of [VIV(O)(Cl)2(μ-bpymah)], the ...

Article

Aerial Oxidation of a VIV-Iminopyridine Hydroquinonate Complex: A Trap for the VIV-Semiquinonate Radical Intermediate

Stylianou, Marios; Drouza, Chryssoula; Giapintzakis, Ioannis; Athanasopoulos, Georgios I.; Keramidas, Anastasios D. (2015)

The reaction of 2,5-bis[N,N′-bis(2-pyridyl-aminomethyl)aminomethyl]-p-hydroquinone (H2bpymah) with VO2+ salts in acetonitrile or water at a low pH (2.2-3.5) results in the isolation of [{VIV(O)(Cl)}2(μ-bpymah)], the ...

Article

Attraction of iodide ions by the free water surface, revealed by simulations with a polarizable force field based on drude oscillators

Archontis, Georgios Z.; Leontidis, Epameinondas; Andreou, Georgia (2005)

Recent theoretical and experimental studies have shown that polarizable anions, such as iodide and bromide, preferentially accumulate close to the surface of electrolyte solutions. This finding is in sharp contrast to the ...

Article

Design, synthesis and biological evaluation of benzo[e][1,2,4]triazin-7(1H) -one and [1,2,4]-triazino[5,6,1-jk]carbazol-6-one derivatives as dual inhibitors of beta-amyloid aggregation and acetyl/butyryl cholinesterase

Catto, M.; Berezin, Andrey A.; Lo Re, D.; Loizou, G.; Demetriades, Marina; De Stradis, A.; Campagna, F.; Koutentis, Panayiotis Andreas; Carotti, A. (2012)

Alzheimer's disease (AD) onset and progression are associated with the dysregulation of multiple and complex physiological processes and a successful therapeutic approach should therefore address more than one target. Two ...

Article

Dexter Energy transfer pathways

Skourtis, Spiros S.; Liu, C.; Antoniou, Pavlos; Virshup, A. M.; Beratan, David N. (2016)

Energy transfer with an associated spin change of the donor and acceptor, Dexter energy transfer, is critically important in solar energy harvesting assemblies, damage protection schemes of photobiology, and organometallic ...

Article

Direct observation of ultrafast long-range charge separation at polymer-fullerene heterojunctions

Provencher, F.; Bérubé, N.; Parker, A. W.; Greetham, G. M.; Towrie, M.; Hellmann, C.; Côté, M.; Stingelin, N.; Silva, C.; Hayes, Sophia C. (2014)

In polymeric semiconductors, charge carriers are polarons, which means that the excess charge deforms the molecular structure of the polymer chain that hosts it. This results in distinctive signatures in the vibrational ...

Article

Discrete and encapsulated molecular grids: Homometallic Mn15 and heterometallic Mn24Ni2 aggregates

Charalambous, Maria; Zartilas, Sotiris M.; Moushi, Eleni E.; Papatriantafyllopoulou, Constantina; Manos, Manolis J.; Stamatatos, Theocharis C.; Mukherjee, S.; Nastopoulos, Vassilios; Christou, George; Tasiopoulos, Anastasios J. (2014)

Two molecular grid-like clusters are reported, one is a discrete [3 × 5] grid and the other a [3 × 4] grid within a Mn12Ni 2 loop. Both Mn24Ni2 and Mn15 aggregates display novel and aesthetically pleasing structures with ...

Article

Electron transfer mechanisms

Beratan, David N.; Skourtis, Spiros S. (1998)

The tunneling pathway framework description of protein electron transfer reactions has prompted a lively discussion of how structure and evolution influence electron transfer rates. Recent protein and model system experiments, ...

Article

A Mn15 single-molecule magnet consisting of a supertetrahedron incorporated in a loop

Moushi, Eleni E.; Masello, A.; Wernsdorfer, W.; Nastopoulos, Vassilios; Christou, George; Tasiopoulos, Anastasios J. (2010)

Two new Mn15 clusters consisting of a supertetrahedron which is incorporated in a loop are reported. The reactions of [Mn(O2CEt) 2]·2H2O with the diols 1,3-propanediol (H 2pd) or 2-methyl-1,3-propanediol (H2mpd) in the ...

Article

New antimony(III) halide complexes with dithiocarbamate ligands derived from thiuram degradation: The effect of the molecule's close contacts on in vitro cytotoxic activity

Urgut, O. S.; Ozturk, I. I.; Banti, Christina N.; Kourkoumelis, Nikolaos; Manoli, Maria; Tasiopoulos, Anastasios J.; Hadjikakou, Sotiris K. (2016)

Antimony(III) halide complexes of the formulae {[SbBr(Me2DTC)2]n} (1), {[SbI(Me2DTC)2]n} (2) and {[(Me2DTC)2Sb(μ2-I)Sb(Me2DTC)2]+.I3-} (3) (Me2DTC = dimethyldithiocarbomate) were synthesized from SbX3, (X = Br or I) and ...

Article

p-phenylenecarbenonitrene and its halogen derivatives: How does resonance interaction between a nitrene and a carbene center affect the overall electronic configuration?

Nicolaïdes, Andrew N.; Enyo, T.; Miura, D.; Tomioka, H. (2001)

A series of para-conjugatively coupled phenylenecarbenonitrenes {(4-nitrenophenyl)methylene (3a), (4-nitrenophenyl)fluoromethylene (3b), (4-nitrenophenyl)chloromethylene (3c), and (4-nitrenophenyl)bromomethylene (3d)} were ...

Article

Photoselected electron transfer pathways in DNA photolyase

Prytkova, T. R.; Beratan, David N.; Skourtis, Spiros S. (2007)

Cyclobutane dimer photolyases are proteins that bind to UV-damaged DNA containing cyclobutane pyrimidine dimer lesions. They repair these lesions by photo-induced electron transfer. The electron donor cofactor of a photolyase ...

Article

Synthesis, structural characterization and in vitro inhibitory studies against human breast cancer of the bis-(2,6-di-tert-butylphenol)tin(iv) dichloride and its complexes

Shpakovsky, D. B.; Banti, Christina N.; Beaulieu-Houle, G.; Kourkoumelis, Nikolaos; Manoli, Maria; Manos, Manolis J.; Tasiopoulos, Anastasios J.; Hadjikakou, Sotiris K.; Milaeva, E. R.; Charalabopoulos, Konstantinos A.; Bakas, Thomas V.; Butler, I. S.; Hadjiliadis, Nick (2012)

Four new organotin(iv) complexes of bis-(2,6-di-tert-butylphenol)tin(iv) dichloride [(tert-Bu-)2(HO-Ph)]2SnCl2 (1) with the heterocyclic thioamides 2-mercapto-pyrimidine (PMTH), 2-mercapto-4-methyl- pyrimidine (MPMTH), ...

Article

Use of molecular beacons and multi-allelic real-time PCR for detection of and discrimination between virulent Bacillus anthracis and other Bacillus isolates

Hadjinicolaou, Andreas V.; Demetriou, Victoria L.; Hezka, Johana; Beyer, W.; Hadfield, T. L.; Kostrikis, Leontios G. (2009)

The awareness of the threat of Bacillus anthracis, the causative agent of the disease anthrax, as a biowarfare and bioterrorism weapon has revived the development of new technologies for rapid and accurate detection of ...