1：Experimental Design and Method Selection

Synthesis of two symmetrical disubstituted fluorophores based on the same dicyano-phenylenevinylene scaffold with terminal donor or withdrawing groups. Spectroscopic properties of neat solids and low-doped layers in polystyrene or polyvinylcarbazole host matrixes were analyzed. Luminescence performance was explained using density functional theory (DFT) analysis.

2：Sample Selection and Data Sources

Fluorophores C1 and C2 were synthesized and their optical properties were analyzed in solution and solid state. Doped films were prepared by spin-coating from crystals dissolved in non-emissive (PS) and emissive (PVK) polymeric matrixes.

3：List of Experimental Equipment and Materials

Bruker Avance II 400 MHz apparatus for 1H NMR, Q-TOF premier instrument for mass spectrometry, Zeiss Axioscop polarizing microscope for optical observations, DSC/TGA Perkin Elmer TGA 4000 for phase transition temperatures and enthalpies, JASCO F-530 and FP-750 spectrometers for UV–Vis and fluorescence spectra, SCS P6700 spin-coater for thin films preparation.

4：Experimental Procedures and Operational Workflow

Fluorophores were synthesized via condensation of the diamino derivative CN-PV-NH2 with specific aldehydes. Thin films of neat samples and blends were obtained via spin-coating technique. Optical and luminescence properties were measured.

5：Data Analysis Methods

Quantum-mechanical calculations were performed using the Jaguar package at the DFT/B3LYP theory level. Absorption values were obtained from vertical excitation energy values calculated with TDDFT and Tamm–Dancoff approximation.