Investigation of photoexcited states in porcine eumelanin through their transient radical products.


Time-resolved electron paramagnetic resonance was used to monitor the photochemistry of radical pairs from melanin in porcine retinal pigment epithelial cells on the sub-microsecond time scale. Two distinct signals were found: one of enhanced absorption/emission at early times and one mostly emissive at later times. The emissive character of the longer… (More)
DOI: 10.1021/jp905417w


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