1：Experimental Design and Method Selection:

The study involved synthesizing perylenediimide derivatives (PDIs) and investigating their reduction to radical anions via visible light photoinduced electron transfer (PET). Methods included UV-vis spectroscopy, EPR spectroscopy, cyclic voltammetry, fluorescence spectroscopy, XRD, XPS, TEM, and kinetic studies using pseudo-first-order kinetics.

2：Sample Selection and Data Sources:

Three PDIs (PDI 1, PDI 2, PDI 3) were synthesized based on literature procedures. Solvents such as NMP, DMF, DMSO, and others were used. Silver nitrate (AgNO3) was used for photocatalytic reduction experiments.

3：List of Experimental Equipment and Materials:

Equipment included a Bruker AV400 NMR spectrometer, Bruker AmaZon SL mass spectrometer, Bruker Vertex-70 IR spectrometer, Agilent 8453 UV/vis spectrophotometer, MVL-210 visible lamp, Hitachi F-4600 fluorescence spectrophotometer, Xpert Pro MPD X-Ray diffractometer, Thermo SCIENTIFIC ESCALAB 250Xi XPS, FEI Tecnai G2 F20 TEM, and CHI630E electrochemical workstation. Materials included NMP, TBAP as electrolyte, and various solvents and reagents.

4：Experimental Procedures and Operational Workflow:

PDIs were dissolved in solvents and irradiated with visible light to generate radical anions. UV-vis and EPR spectra were recorded over time. Cyclic voltammetry was performed in deoxygenated conditions. For photocatalytic reduction, Ag+ was added to PDI radical anion solutions, and changes were monitored. TEM, XRD, and XPS were used to characterize reduced silver nanoparticles.

5：Data Analysis Methods:

Data were analyzed using Lambert-Beer's law for conversion efficiency, pseudo-first-order kinetics for rate constants, and statistical fitting (R2 values). Electrochemical data were interpreted based on reduction potentials.