Edwin F. Hilinski

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Ultrafast photolysis of 9-diazofluorene (DAF) produces a broadly absorbing transient within the instrument time resolution (300 fs), which is assigned to an excited state of the diazo compound. The diazo excited state fragments to form fluorenylidene (Fl) in both its lowest energy singlet state (1Fl, 405-430 nm, depending on the solvent) and a higher energy(More)
The thermal rearrangements of the bicyclo[2.1.0]pentane-5,2'-methylenecyclopropanes fall into two classes. The first occurs near 80 degrees C and consists of a double epimerization ("bridge flip") which is initiated by cleavage of the bridge bond. An alternative mechanism by way of a trimethylenemethane intermediate is ruled out by an isotopic(More)
Light-adapted purple membranes were modified with tetranitromethane by a new light-dependent procedure at pH 5.5 which results in a blue-shifted chromophore absorbing at 530nm. This modification affects two aromatic residues. The modified bacteriorhodopsin's ground state chromophore structure is probed by circular dichroism and resonance raman spectroscopy(More)
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