WAVELENGTH DEPENDENCE OF THE QUANTUM YIELD FOR THE STRUCTURAL ISOMERIZATION OF BILIRUBIN |
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| Authors: | Jordan W Greenberg Vinay Malhotra John F Ennever |
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| Institution: | Department of Pediatrics, Rainbow Babies and Childrens Hospital, Case Western Reserve University, Cleveland, Ohio 44106, USA |
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| Abstract: | The quantum yield and the relative photochemical yield for lumirubin formation from bilirubin bound to human albumin were determined at eight wavelengths from 410 to 520 nm. The quantum yield averaged 0.0015 for irradiation between 450 and 490 nm. At 410 and 430 nm the quantum yield was slightly lower. At the long wavelength end of the absorption band, from 500 to 520 nm, the quantum yield averaged 0.003. The relative photochemical yield, normalized to constant fluence, was greatest at 500 nm. |
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