Table 3.

Photodecay quantum yield of BY2 at 253.7 nm (the molar absorptivity of BY2 at 253.7 nm is 8227 mol⁻¹ l cm⁻¹ and light intensity = 2.33 × 10⁻⁶ Einstein l⁻¹ s⁻¹ and l = 1.4 cm).

Process	Quantum yield
UV	0.00088
UV/S2O82−	0.0093