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Proceedings Paper

Wavelength dependent configurational photoisomerisation of bilirubins interpreted by spectral absorptions
Author(s): Marina Mazzoni; Giovanni Agati; Gordon Troup; Riccardo Pratesi
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Paper Abstract

We measured the 4Z,15Z→4Z,15E configurational photoisomerization quantum yields of bilirubin-IXα (BR-IX), the intrinsically asymmetric bile pigment associated with jaundice, when it is irradiated in ammoniacal methanol solution, and of BR-IX and symmetrically-substituted bilirubins (bilirubin-IIIα and mesobilirubin-XIIIα) bound to human serum albumin (HSA) in aqueous solution. The quantum yield wavelength dependence was attributed to fast changes induced in the molecule conformation before photoisomerization.

Paper Details

Date Published: 19 November 2003
PDF: 3 pages
Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); doi: 10.1117/12.530949
Show Author Affiliations
Marina Mazzoni, Consiglio Nazionale delle Ricerche (Italy)
Giovanni Agati, Consiglio Nazionale delle Ricerche (Italy)
Gordon Troup, Monash Univ. (Australia)
Riccardo Pratesi, Univ. degli Studi di Firenze (Italy)


Published in SPIE Proceedings Vol. 4829:
19th Congress of the International Commission for Optics: Optics for the Quality of Life
Giancarlo C. Righini; Anna Consortini, Editor(s)

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