New Approach for Designing Single-Chain Magnets: Organization of Chains via Hydrogen Bonding between Nucleobases

2012 ◽  
Vol 134 (16) ◽  
pp. 6908-6911 ◽  
Author(s):  
Wei-Xiong Zhang ◽  
Takuya Shiga ◽  
Hitoshi Miyasaka ◽  
Masahiro Yamashita
Keyword(s):  
Hydrogen Bonding ◽  
Single Chain ◽  
New Approach ◽  
Single Chain Magnets

Three-Dimensional Antiferromagnetic Order of Single-Chain Magnets: A New Approach to Design Molecule-Based Magnets

2010 ◽  
Vol 16 (12) ◽  
pp. 3656-3662 ◽  
Author(s):  
Hitoshi Miyasaka ◽  
Karin Takayama ◽  
Ayumi Saitoh ◽  
Sachie Furukawa ◽  
Masahiro Yamashita ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Antiferromagnetic Order ◽  
Single Chain ◽  
New Approach ◽  
Single Chain Magnets

Sterically-induced synthesis of 3d–4f one-dimensional compounds: A new route towards 3d–4f single chain magnets

2008 ◽  
Vol 361 (14-15) ◽  
pp. 3997-4003 ◽  
Author(s):  
G. Calvez ◽  
K. Bernot ◽  
O. Guillou ◽  
C. Daiguebonne ◽  
A. Caneschi ◽  
...  
Keyword(s):  
Single Chain ◽  
One Dimensional ◽  
Sterically Induced ◽  
Single Chain Magnets

Topological crystallography of gas hydrates

2015 ◽  
Vol 71 (4) ◽  
pp. 444-450 ◽  
Author(s):  
Sergey V. Gudkovskikh ◽  
Mikhail V. Kirov
Keyword(s):  
Hydrogen Bonding ◽  
Gas Hydrates ◽  
Periodic Boundary ◽  
Periodic Boundary Conditions ◽  
Hexagonal Structure ◽  
New Approach ◽  
Quotient Graphs ◽  
Disordered Structure ◽  
Unit Cells ◽  
Cubic Structure

A new approach to the investigation of the proton-disordered structure of clathrate hydrates is presented. This approach is based on topological crystallography. The quotient graphs were built for the unit cells of the cubic structure I and the hexagonal structure H. This is a very convenient way to represent the topology of a hydrogen-bonding network under periodic boundary conditions. The exact proton configuration statistics for the unit cells of structure I and structure H were obtained using the quotient graphs. In addition, the statistical analysis of the proton transfer along hydrogen-bonded chains was carried out.

Design of single chain magnets through cyanide-bearing six-coordinate complexes

2005 ◽  
Vol 249 (23) ◽  
pp. 2691-2729 ◽  
Author(s):  
Rodrigue Lescouëzec ◽  
Luminita Marilena Toma ◽  
Jacqueline Vaissermann ◽  
Michel Verdaguer ◽  
Fernando S. Delgado ◽  
...  
Keyword(s):  
Single Chain ◽  
Single Chain Magnets

Polyoxometalate-Assisted Assembly of Pearl-Chain-Like Cyanide-Bridged Single-Chain Magnets

2021 ◽  
Author(s):  
Zi-Yi Chen ◽  
Yue Cheng ◽  
Qi Liu ◽  
Yi-Fei Deng ◽  
Yuan-Zhu Zhang
Keyword(s):  
Single Chain ◽  
Single Chain Magnets

Single chain magnets: where to from here?

2008 ◽  
Vol 18 (40) ◽  
pp. 4750 ◽  
Author(s):  
Lapo Bogani ◽  
Alessandro Vindigni ◽  
Roberta Sessoli ◽  
Dante Gatteschi
Keyword(s):  
Single Chain ◽  
Single Chain Magnets

Cobalt(II)-Copper(II) Bimetallic Chains as a New Class of Single-Chain Magnets

2004 ◽  
Vol 16 (18) ◽  
pp. 1597-1600 ◽  
Author(s):  
E. Pardo ◽  
R. Ruiz-García ◽  
F. Lloret ◽  
J. Faus ◽  
M. Julve ◽  
...  
Keyword(s):  
Single Chain ◽  
New Class ◽  
Single Chain Magnets

A Direct, Plasmin Independent Assay For Plasminogen Activation

1981 ◽  
Author(s):  
Luciana Mussoni ◽  
Dan Lawrence ◽  
David Loskutoff
Keyword(s):  
Polyacrylamide Gel Electrophoresis ◽  
Caproic Acid ◽  
Plasminogen Activation ◽  
Single Chain ◽  
New Approach ◽  
Aortic Endothelial Cells ◽  
Cleavage Assay ◽  
Km Value ◽  
Triton X ◽  
Dose Dependent

We have modified the direct, 125I-plasminogen cleavage assay for plasminogen activator (PA) and employed it to compare urokinase (UK), tissue activator (TA), and PAs produced by cultured bovine aortic endothelial cells. The assay is based on conversion of single chain plasminogen to two chain plasmin as revealed by polyacrylamide gel electrophoresis in the presence of SDS andβ-mercapto- ethanol. Inclusion of Triton X-100, albumin and trasylol in the reaction mixture reduced the adsorptive and hydrolytic loss of reactants, and increased the linearity and sensitivity of the assay. Under these conditions, plasmin formation was linear for at least 6 hrs, dose- dependent over a 20-fold range of UK concentrations, and at least 100-fold more sensitive (0.01 units/ml) than previously reported direct assays for UK. In preliminary experiments, we determined a Km value of 10yM for UK and plasminogen. Activation of plasminogen by TA was minimal in the absence of fibrin, and independent of the concentration of activator. However, in the presence of fibrin, (1) the initial rate of activation increased dramatically, (2) 100-1000 fold less TA was required, and (3) activation was proportional to the concentration of both TA and fibrin. Surprisingly, activation by UK and cellular PAs was partially inhibited by fibrin. Epsilon amino caproic acid (EACA; 0.5-100mM) stimulated activation by UK both in the presence and absence of fibrin by 30-40%. In contrast, EACA (0.1-100mM) inhibited TA activity in the presence of fibrin by over 90%. However, in the absence of fibrin, TA was inhibited by only 50%, even at high EACA concentrations (lOOmM). These results indicate that cleavage of 1251- plasminogen can be employed as a direct, sensitive and quantitative assay for various PAs, and offers a new approach for studying plasminogen activation and agents that stimulate or inhibit it.

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