1：Experimental Design and Method Selection

Synthesis of PTVT and PTVBT via Wittig condensation route. Characterization includes FT-IR, NMR, UV-Vis absorption, photoluminescence spectroscopy, fluorescence lifetime measurement, cyclic voltammetry, AFM, TGA, and impedance spectroscopy.

2：Sample Selection and Data Sources

Polymers synthesized from hydroquinone, bromine, 1-bromo hexane, 1-bromododecane, tri-butylvinyltin, Pd(PPh3)4, 5-bromo-2-thiophene carboxaldehyde, Pd(OAc)2, 4,5-dimethylthiazole, 4,5-dimethyl-1,2-phenylenediamine, thionyl chloride, triethylamine, N-bromosuccinimide, benzoyl peroxide, triphenylphosphine, sodium hydride.

3：List of Experimental Equipment and Materials

Thermo Nicolet 330 FT-IR spectrometer, Bruker Advance III 400 MHz spectrometer, JASCO-V-670 FT-IR spectrometer, Perkin Elmer LS45 fluorescence spectrometer, Jobin Yvon FLUOROLOG-FL3-111 spectrofluorometer, ZEISS (EVO18) scanning electron microscope, Nanosurf Easyscan 2 AFM instrument, CH-I 660C instrument, SDT Q600 V20.9 build 20 instrument, CH-I 760C instrument, Perkin Elmer Clarus 680GC-MS spectrometer, Waters-RID 2414 instrument.

4：Experimental Procedures and Operational Workflow

Synthesis of monomers and polymers, spin-coating for thin film preparation, optical and electrochemical characterization, thermal stability and conductivity measurements.

5：Data Analysis Methods

Optical band gap calculation from absorption edges, fluorescence lifetime analysis using biexponential decay function, quantum yield calculation relative to quinine sulfate, electrochemical band gap from cyclic voltammetry, surface roughness from AFM, thermal stability from TGA, conductivity from impedance spectroscopy.