Free radicals, which have electrons with unpaired spins, such as occur in photochemical or
oxidation processes or are trapped in polymers, can be detected and examined by the …

Publisher Summary Melanins contain free radicals under all known experimental conditions.
The free-radical content is sensitive to light, reducing and oxidizing equivalents, and other …

Formation of light-induced free radicals from natural eumelanin (from bovine eyes) and
synthetic melanin (from oxidation of 3, 4-dihydroxyphenylalanine) has been studied by …

The electron spin resonances (ESR) of several native and modified melanins have been
determined. Melanins isolated from black wool and synthesized from 3, 4-dihydroxyl-L …

The presence of unpaired electrons in melanin may be readily understood if it is supposed
that melanin is in effect a one-dimensional semiconductor, any bound protons acting as …

<b>The Photobiology of Melanin</b> Page 1 Photochemistry and Photobiology, 1997, 65(3):
471 Symposium-in-Print The Photobiology of Melanin Introduction Helene 2. Hill* Department of …

Electron spin resonance (esr) observations of squid melanin have been conducted over the
temperature range 500° K to 4.2° K, and the effect of various chemical treatments of the …

Electron spin resonance measurements on aerated melanin suspensions during
photoirradiation show changes in the microwave saturation of melanin free radicals and …

Saturation recovery measurements of the electron spin–lattice relaxation times of the free
radicals of melanin are reported.''Natural''melanin gently extracted from the choroid of …

The known photoreactions of melanin include production of melanin free radicals and
oxygen consumption. While qualitative descriptions of the intermediates and products of …