Influence of secondary structure on electronic energy relaxation in adenine homopolymers

Article Abstract:

Electronic energy relaxation in the adenine homopolymers poly(A) and poly(dA) as well as in the adenine mononucleotide, are studied by the femtosecond transient absorption technique and by steady-state absorption and emission spectroscopies in aqueous solution. Femtosecond pump-probe spectroscopy is a conformationally sensitive technique for studying nucleic acids.

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Stabilizing ion pairs in poly(methyl methacrylate)

Article Abstract:

The decay of ions trapped in gamma-irradiated poly(methyl methacrylate) (PMMA)-containing ion scavengers was examined. The dependence of the decay of the ions on the concentration of pyrenyl groups indicated that the ions decay through a hopping transfer of the charge of pyrenyl groups.

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Time-resolved emission spectra of Fluoroprobe and Maleimido-Fluoroprobe before, during, and after sudden vitrification of radiation-polymerized methyl

Article Abstract:

The changes that occur in the charge-transfer (CT) emission from the highly fluorescent probe molecule Fluoroprobe (FP) and its fluorogenic derivative Maleimido-Fluoroprobe (MFP) during the radiation-induced polymerization of methyl methacrylate (MMA) is reported.

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