QUANTUM YIELDS OF SINGLET-OXYGEN PRODUCTION BY SOME NATURAL QUINOID FUNGAL METABOLITES AND DERIVATIVES

Authors
AMINIANSAGHAFI T NASINI G CARONNA T BRAUN AM OLIVEROS E
Citation
T. Aminiansaghafi et al., QUANTUM YIELDS OF SINGLET-OXYGEN PRODUCTION BY SOME NATURAL QUINOID FUNGAL METABOLITES AND DERIVATIVES, Helvetica Chimica Acta, 75(2), 1992, pp. 531-538
Citations number
32
Journal title
Helvetica Chimica Acta → ACNP
ISSN journal
0018019X
Volume
75
Issue
2
Year of publication
1992
Pages
531 - 538
Database
ISI
SICI code
0018-019X(1992)75:2<531:QYOSPB>2.0.ZU;2-6
Abstract
Perylene quinone compounds of natural and synthetic origin have been i nvestigated for their quantum efficiency of singlet-oxygen production (PHI(DELTA)). The results may be interpreted by a qualitative relation between PHI(DELTA) and the planarity of the sensitizer molecules, hig hest values (0.8-0.9) being observed where planarity is favoring tauto meric structures. On the other hand, derivatives exhibiting non-planar quinoid structures show lower PHI(DELTA), and methylated derivatives react photochemically.