Exploration of the secondary structure specific differential solvation dynamics between the native and molten globule states of the protein HP-36

Article Abstract:

A comparative study of the solvation dynamics of the native state and a partially unfolded structure of a small globular protein, chicken villin headpiece subdomain containing 36 amino acid residues (HP-36) in aqueous solution is presented. The calculations reveal that the unfolding of helix-2 of the protein molecule influences the polar solvation dynamics of all the three helices, but in a nonuniform heterogeneous fashion.

Observations, Proteins, Protein structure, Solvation, Structure, Chemical properties, Globular proteins

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Wavelength and temperature dependence of the femtosecond pump-probe anisotropies in the conjugated polymer MEH-PPV: implications for energy-transfer dynamics

Article Abstract:

The energy transfer in the conjugated polymer 2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene[MEH-PPV] is investigated, using femtosecond degenerate pump-probe experiments at different wavelengths. A simple model is used to obtain semiquantitative agreement with the experimental results of the inhomogeneous broadening, vibrational line shape, and the intramolecular Stokes shift.

Polymers, Energy transfer

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