Photochemical reaction of 2-nitrobenzaldehyde by monitoring the diffusion coefficient

Article Abstract:

The photochemical reaction of 2-nitrobenzaldehyde (NBA) in various electrolyte solutions as well as in a solution with a protein is investigated from the viewpoint of the diffusion coefficient by using the time-resolved transient grating (TG) method. It is found that the time profile of the grating signal also depends on the addition of guanidine-HCL or apomyoglobin.

Cyclic crudes and intermediates, Cyclic Crude and Intermediate Manufacturing, Nitrobenzene, Analysis, Diffusion, Diffusion (Physics), Photochemistry, Nitrobenzenes

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Diffusion coefficient and the secondary structure of poly-L-glutamic acid in aqueous solution

Article Abstract:

The diffusion coefficient (D) of poly-L-glutamic acid (PLG) at various pHs is investigated by the laser-induced transient-grating method with new photoreactive probe molecule. The pH dependence of D, which is compared with that of the helical content of PLG measured by circular dichroism, are very similar.

Glutamate, Optical properties, Hydrogen-ion concentration, pH, Circular dichroism

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Dynamics of water-soluble stilbene dendrimers upon photoisomerization

Article Abstract:

The time-resolved transient grating method studies the enthalpy change that is the energy-releasing process and the conformational dynamics of water-soluble stilbene dendrimers upon photoexcitation. It is reported that the enthalpy of the cis-form is much larger than that of the trans-form.

Water chemistry, Dynamics, Dynamics (Mechanics), Enthalpy

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