1：Experimental Design and Method Selection:

The study involved synthesizing three small molecules (4a, 4b, 4c) through condensation reactions, followed by characterization using UV-Vis absorption, cyclic voltammetry (CV), atomic force microscopy (AFM), two-dimensional grazing incidence X-ray diffraction (2D-GIXRD), and fabrication of bottom gate/bottom contact organic field-effect transistors (OFETs) to evaluate charge transport properties. Theoretical methods included density functional theory (DFT) calculations.

2：Sample Selection and Data Sources:

Samples were the synthesized molecules 4a, 4b, and 4c. Data were obtained from laboratory experiments and theoretical simulations.

3：4c. Data were obtained from laboratory experiments and theoretical simulations. List of Experimental Equipment and Materials:

3. List of Experimental Equipment and Materials: Equipment included Bruker NMR spectrometers, Hitachi U-3010 spectrophotometer, Jasco FP-6000 spectrometer, Bruker TENSOR-27 IR spectrometer, CHI660c electrochemistry workstation, Digital Instruments Nanoscope V AFM, and Keithley 4200 SCS semiconductor parameter analyzer. Materials included chemical reagents like N,N-dimethylacetamide, sodium hydride, etc., and substrates such as OTS-treated SiO2/Si.

4：Experimental Procedures and Operational Workflow:

Synthesis involved alkylation and oxidation reactions, followed by condensation. Characterization included UV-Vis, CV, AFM, and 2D-GIXRD measurements. OFETs were fabricated by spin-coating solutions on substrates, annealing, and measuring electrical properties in a glovebox.

5：Data Analysis Methods:

Data were analyzed using Gaussian 03 for DFT calculations, and mobility was calculated from FET equations. Statistical analysis involved averaging over multiple devices.