Fig. S4.

Beer’s law plots of (A) 4CNI and (B) 4CNI-3AA at the indicated wavelengths. The straight line in each case corresponds to a linear regression of the respective data with a zero y intercept, which yielded a molar extinction coefficient of 8,056 ± 24 M⁻¹⋅cm⁻¹ for 4CNI at 305 nm, and 5,778 ± 8 M⁻¹⋅cm⁻¹ and 4,750 ± 8 M⁻¹⋅cm⁻¹ for 4CNI-3AA at 305 nm and 330 nm, respectively.