For a Particular Substituted Stilbene Dendrimer the Quantum Yield for Fluorescence

question 5

Multiple Choice

For a particular substituted stilbene dendrimer the quantum yield for fluorescence following electronic excitation is 0.14, with the observed lifetime of the excited state 4.6 ns. Calculate the rate constant for fluorescence.

• A) 33  10³ s^-1
• B) 30  10⁶ s^-1
• C) 1.6  10⁹ s^-1
• D) 6.4  10^-10 s^-1

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