The collected sample is automatically characterized in the spectroscopic workflow described in Note S5, orchestrated by ChemOS 2.0. Upon successful completion of the HPLC-MS run and automated fraction collection, spectroscopic analysis can be initiated from ChemOS 2.0. On the custombuilt device, the sample is transferred to different flow cuvettes using a syringe pump. Steady-state absorption spectra are recorded using a whitelight lamp (Ocian Insight DH-MINI) combined with a spectrometer (Ocean Insight, QEPro XR). Steady-state emission spectra were recorded on the same spectrometer using a 365-nm solid-state LED (Thorlabs, M365FP1 with DC4100HUB) as the excitation source. Quantum yields were determined by integration of the emission spectrum, while simultaneously recording the excitation transmission using a photodetector (Thorlabs, S120VC with PM100D). Quantum yields were referenced to a pre-measured sample of 4,4`-Bis[(N-carbazole)styryl]biphenyl (ϕ = 0.89 in toluene). Timeresolved emission spectra were recorded using time-correlated single-photon counting (TCSPC, PicoQuant TimeHarp 260 board) after excitation with a picosecond-pulsed laser (PicoQuant, LDH-D-C-375 with PL800-D), and the corresponding lifetimes were obtained by exponential fitting. Details on the data analysis workflow are described in Ref. . Upon completion of the analysis workflow, all analysis results are automatically stored on ChemOS 2.0.