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Which outcome occurs when a photosensitizer's triplet-state orbitals overlap?

A)Enhanced intersystem crossing efficiency
B)Decreased fluorescence quantum yield
C)Phosphorescence signal is quenched
D)Singlet oxygen generation halts

💡 Explanation

Enhanced intersystem crossing occurs because orbital overlap facilitates spin-orbit coupling, therefore increasing the likelihood of transition to the triplet state, rather than immediate decay to the ground state via fluorescence.

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