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← ScienceWhich risk increases significantly when photoactive molecule degradation alters frontier orbitals?
A)Increased singlet oxygen quantum yield✓
B)Reduced electrochemical polymerization activity
C)Enhanced triplet state phosphorescence
D)Greater photo-induced electron transfer
💡 Explanation
Singlet oxygen production rises when altered electron distribution destabilizes the LUMO, leading to efficient energy transfer to oxygen via intersystem crossing; this is *spin-orbit coupling*. The higher yields pose a risk, because different decay pathways are suppressed therefore changing its chemical behavior rather than the polymerization.
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