Search results for "Blue"

Divorcing after Holidays

2016

Divorcing is a common-place practices that characterized our modern daily life. What is more than interesting to explore is why one of third takes after holidays. Are holidays accelerating the social decomposition the founding parents of sociology denounced in earlier century? or simply, as Maccannell puts it, tourism serves as a valve (mechanism) of cohesion similarly to the role played by religion/totems in primitive societies? To answer these questions, we present statistical information given by the Dirección General de Estadística y Censos (Ministerio de Hacienda GCBA). Although this information had its own limitations, which suggests more investigation is needed, we strongly beliefs t…

Effect of t-BuS vs. n-BuS on the topology, Cu⋯Cu distances and luminescence properties of 2D Cu4I4/RS(CH2)4SR metal–organic frameworks

2011

CuI reacts with RS(CH2)4SR (R = n-Bu (L1); t-Bu (L2)) to afford the 2D coordination polymers [Cu4I4{μ-RS(CH2)4SR}2]n (R = n-Bu (1); t-Bu (2)). Their grid networks exhibit nodal Cu4(μ3-I)4 clusters interconnected by dithioethers with mean Cu⋯Cu distances of 2.7265(10) and 2.911(2) A for 1 and 2, respectively. This difference translates in a blue shift of the solid state emission bands and a decrease in emission lifetimes when trading R = n-Bu to the bulky t-Bu.

From linear quaterthiophene to sulflower: A comparative theoretical study

2009

Abstract In this paper, we report a theoretical study of four types of thiophene-based oligomers showing the same number of C C double bonds and very different molecular structures. The comparative study has been performed on the basis of B3LYP/6-31G∗∗ calculations. The way the thiophene rings are linked together has a remarkable influence on the molecular and electronic properties. Linear quaterthiophene and heptathienoacene show similar aromatic structures but a loss of π-conjugation is detected for the latter due to the condensation of thiophene rings. A blue shift of the most intense electronic transition is predicted for fused heptathienoacene compared with non-fused quaterthiophene. C…

A Compilation of Protocols to Visualize Enzymes Following Electrophoretic Separation

1994

The following tables supply protocols for the electrophoretic separation as well as for the succeeding visualization of enzymes. Separation systems and enzyme visualization procedures are adjusted to each other.

Optimization of Polymer Blue-Light-Emitting Devices by Introducing a Hole-Injection Layer Doped with the Molecular Nanomagnet [Mn12O12(H2O)4(C6F5COO)…

2006

Low-dimensional iodide perovskite nanocrystals enable efficient red emission

2019

We report herein a simple ligand-assisted reprecipitation method at room temperature to synthesize mixed-cation hybrid organic–inorganic perovskite nanocrystals with low structural dimensionality.

Lysosome-like particles in Geotrichum candidum : A cytochemical study

1971

Lysosome-like particles were localized in Geotrichum candidum by means of the technique for the detection of acid phosphatase of PEARSE and staining with the vital dyes Brilliant cresyl blue and Neutral red. Pretreatments of the cells with procedures injuring the lysosome membrane resulted in shortening of the incubation time (2 min instead of 30 min). After exposure to 1% Triton X-100 the cells showed uniform strong staining due to the release of the enzyme into the cytoplasm.

The role of potassium and hydrogen ions in the Prussian Blue ⇆ Everitt's Salt process

1998

Cyclic voltammetry experiments have proved very useful in the knowledge and understanding of the role of the potassium and hydrogen ions during the Prussian Blue ⇄ Everitt's Salt process. While potassium ions act as a stoichiometric reactant, the hydrogen ions play a very important role in the kinetics of the electron-hopping process. The entropy change for the reaction PB ⇄ ES has proved to be dependent on the degree of crystallinity of the film, indicating that this entropy change is related to the fixation of inner counterions on the crystal structure of the films.

The correlation between electrochemical impedance spectra and voltammograms of PB films in aqueous NH4Cl and CsCl

1998

Abstract Voltammetric curves of reduction of Prussian Blue Films to the Everitt’s Salt form and oxidation to the Prussian Yellow form show important differences depending on the supporting electrolyte countercation. The rate of the overall electron-hopping depends on the countercation. Apparent diffusion coefficients are evaluated from impedance spectra at different stabilization potentials. The dependence of the apparent diffusion coefficients on the stabilization potential can help understand the dependence of the voltammograms shape on the countercation nature.

Photoswitchable coordination compounds

2001

Photoswitchable compounds represent an attractive class of materials in coordination chemistry. Recent progress dealing with transition metal compounds involving photo-induced changes of the magnetic and/or optical properties to long-lived metastable states are covered in the present review article. The basic photophysical phenomena together with representative examples such as nitroprusside derivatives, relevant spin crossover complexes, stilbenoid complexes and finally Prussian blue analogues are discussed. Some possible applications regarding energy and information storage are suggested at the end.