Symmetrical and Asymmetrical Thiophene-Coumarin-Based Organic Semiconductors.

ABSTRACT: Organic semiconductors are a valuable material class for optoelectronic applications due to their electronic and optical properties. Four new symmetric and asymmetric thiophene-coumarin derivatives were designed and synthesized via Pd-catalyzed Suzuki and Stille Cross-Coupling reactions. Single crystals of all synthesized thiophene-coumarin derivatives were obtained, and π···π interactions were observed among them. The π···π interactions were supported by UV-vis, transmission electron microscopy, and atomic force microscopy analyses. The photophysical and electrochemical properties of the coumarins were investigated and supported by density functional theory studies. Fluorescence quantum yields were recorded between 36 and 66%. Moreover, mega Stokes shifts (175 nm or 8920 cm^-1)

SUBMITTER: Altınısık S 

PROVIDER: S-EPMC10809254 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature