Two-dimensional infrared (2D-IR) spectroscopy is used to measure the spectral dynamics of metal carbonyl complex cyclopentadienyl manganese tricarbonyl (CMT) in a series linear alkyl nitriles. 2D-IR provides direct readout solvation through diffusion, probing decay frequency correlation induced by fluctuations solvent environment. simultaneously monitors intramolecular vibrational energy redist...

The polarographic reduction of aromatic carbodiimides in anhydrous aprotic solvents goes through a carbene intermediate by a diffusion controlled process in two one-electron steps. The first step is the rate-determining step and converts the carbodiirnide to a radical anion (6) that reduces further by a fast one-electron step to a carbene dianion intermediate (7). This abstracts an oxygen, ...

the molecular sieves are selective adsorbents. they can adsorb some kind of molecules that are different in size or shape from the others. in separation of n-paraffins from iso-paraffins and aromatics, sa molecular sieve is the suitable adsorbent, and can adsorb n-paraffins to separate them from other hydrocarbons. in this paper equilibrium isotherms of n-cs, n-c6 and n-c7 from an inert solvent...

The surface of a molecule determines much of its chemical and physical property, and is of great interest and importance. In this Letter, we introduce the concept of molecular multiresolution surfaces as a new paradigm of multiscale biological modeling. Molecular multiresolution surfaces contain not only a family of molecular surfaces, corresponding to different probe radii, but also the solven...

2014 Photon correlation spectroscopy measurements are reported of the collective motion diffusion coefficient Dc and the longitudinal elastic modulus Egel of polyacrylamide gels in the poor solvent region using a water : methanol (3 : 1 by volume) mixture as solvent. It is shown that the presence of cross-links hinders the movement of polymer self-entanglements, which are characteristic of 03B8...

The Front Cover illustrates how the different solvent shells forming in water/alcohol mixtures can be probed by single particle electrochemistry thanks to resulting difference diffusion speeds of solvated ions. More information found Research Article E. N. Saw et al.

A coarse-grained lattice-gas model in three dimensions is developed to study the self-assembly of nanoparticles into micrometer-sized rings from a thin liquid film containing the nanoparticles. The model describes the nanoparticles as well as the solvent on length scales that are typical of the solvent bulk correlation length. Morphologies obtained from simulations of the model resemble recent ...

Plants produce a diverse range of bioactive molecules, making them rich source of different types of medicines. In the present study the, In vitro antibacterial activity of 3 medicinal plants viz., Parthenium hysterophorus, Stevia rebaudiana and Ginkgo biloba were evaluated by using different solvent extracts. The extracts were tested against Escherichia coli, Pseudomonas aeruginosa, Klebsiella...

We compare fluorescence correlation spectroscopy (FCS) measurements of the fluorescent nanoparticle, TAMRA, diffusing in non-fluorescent -hence invisiblepoly(vinylalcohol) (PVA) or Ficoll70 solutions as a function of the polymer concentration, c. We determine changes of the translational diffusion coefficient of TAMRA and fit the data with the universal scaling law ( ] ) / ( exp[ ~ * ν α c c D ...

This paper examines the role of dynamic solvation in several chemical processes. The following three phenomena are discussed in detail: rotational diffusion of dipolar molecules in alcohol solvents, the solvation of photogenerated electrons in water and reaction rate constants of intramolecular charge transfer processes in polar solvents. In each case, information on the role of solvent motion ...