The quantum yield plays a pivotal role in the mechanistic exploration of photochemical reactions. It stands as a primary determinant of requisite photon equivalents. This parameter offers insights into the reaction mechanism, such as chain reactions, and gauges the efficiency of the photochemical process. As such, ensuring the precision of the quantum yield becomes imperative. This necessitates knowledge of the system's photon flux (expressed in mol s -1 , or commonly as E s -1 , where Einstein represents a mole of photons). Chemical actinometry emerges as the conventional method for acquiring this data. Specifically, actinometry leverages reactions with established quantum yields to experimentally deduce the photon flux, guided by the Bouguer-Lambert-Beer law (Equation ). This law describes the transmittance of light (𝑇𝑇) as a change in light intensity (𝐼𝐼) against its initial value (𝐼𝐼 0 ), due to the absorbance (𝐴𝐴) within a uniform, isotropic medium. The absorbance escalates rapidly when light traverses a known distance (𝑙𝑙) through an attenuating medium that is characterized by the concentration of the absorbing species (𝐶𝐶) and its (decadic) molar attenuation coefficient (𝜀𝜀).