Physical Chemistry 2 Quiz
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A photoactive coordination compound exhibits dual emission: a short-lived fluorescence at 485 nm (τ = 12 ns, Φ = 0.08) and a long-lived phosphorescence at 650 nm (τ = 240 μs, Φ = 0.15). When dissolved in D₂O instead of H₂O, the fluorescence parameters remain unchanged, but the phosphorescence lifetime increases to 890 μs while maintaining similar quantum yield. What is the primary deactivation mechanism affected by deuteration?
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