Question: If f = 1 10 10 s and k ic = 5 10 8 s 1 , what is f ?

If τ _f = 1 × 10⁻¹⁰ s and k _ic = 5 × 10⁸ s^–1, what is Φ _f ? Assume that the rate constants for intersystem crossing and quenching are sufficiently small that these processes can be neglected.

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