نتایج جستجو برای: charge transfer complex

تعداد نتایج: 1166147  

Journal: :Space Science Reviews 2010

2015

Intense laser-produced plasma is a complex amalgamof ions, electrons and atoms both in ground and excited states. Little is known about the spatial composition of the excited states that are an integral part ofmost gaseous or cluster plasma. In cluster-plasma, Rydberg excitations change the charge composition of the ions through charge transfer reactions and shape the angular distributions.Here...

Journal: :Physical review letters 2012
Kazuyoshi Yoshimi Hitoshi Seo Shoji Ishibashi Stuart E Brown

We theoretically investigate the interplay between charge ordering and magnetic states in quasi-one-dimensional molecular conductors TMTTF(2)X, motivated by the observation of a complex variation of competing and/or coexisting phases. We show that the ferroelectric-type charge order increases two-dimensional antiferromagnetic spin correlation, whereas in the one-dimensional regime two different...

Journal: :Nature communications 2016
Steve Johnston Claude Monney Valentina Bisogni Ke-Jin Zhou Roberto Kraus Günter Behr Vladimir N Strocov Jiři Málek Stefan-Ludwig Drechsler Jochen Geck Thorsten Schmitt Jeroen van den Brink

Strongly correlated insulators are broadly divided into two classes: Mott-Hubbard insulators, where the insulating gap is driven by the Coulomb repulsion U on the transition-metal cation, and charge-transfer insulators, where the gap is driven by the charge-transfer energy Δ between the cation and the ligand anions. The relative magnitudes of U and Δ determine which class a material belongs to,...

Journal: :علوم 0

thin film phthalocyanines(pc), incloding zinc, iron, and magnesium phthalocyani-nes, were prepared by vacuum deposition method. chronocoulometry was used to study the charge transfer reaction mechanism of ionic species through the thin films. the results obtained in chronocoulometric studies shows that the thin film phthalocyanines could operate via two mechanisms.the first mechanism metal pc t...

Journal: :Biochemistry 1998
V Nivière M A Vanoni G Zanetti M Fontecave

Flavin reductase catalyzes the reduction of free flavins by NAD(P)H. As isolated, Escherichia coli flavin reductase does not contain any flavin prosthetic group but accommodates both the reduced pyridine nucleotide and the flavin substrate in a ternary complex prior to oxidoreduction. The reduction of riboflavin by NADPH catalyzed by flavin reductase has been studied by static and rapid kinetic...

2006
J. P. Fouassier

Onium salts, widely used cationic photoinitiators, have absorption in the short wavelength of the UV spectrum. However, their spectral sensitivity can be tuned up to the visible region by using several methods. Photosensitization of onium salts, their charge transfer complex formation and their free radical promotion are some techniques that are used to provide wavelength flexibility. This chap...

2015
Amparo Salmerón-Valverde Sylvain Bernès Nikolaus Korber

Two 1:1 charge-transfer organic complexes were formed using tetrathiafulvalene as a donor and a 9H-fluorenone derivative as acceptor: 4,5,7-trinitro-9H-fluoren-9-one-2carboxylic acid (complex 1) or 4,5,7-trinitro-9H-fluoren-9-one-2-carboxylic acid methyl ester (complex 2). Both systems crystallize with alternated donor and acceptor stacks. However, the crystal structure of 1 is influenced by cl...

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