We report the simple synthesis of two organic chromophores featuring an\nethynyl-thienothiophene linker with an n-hexyl chain (CSD-03 and CSD-04), their optical and\nelectrochemical properties, and their use as photosensitizers in dye-sensitized solar cells (DSSCs).\nOur theoretical and experimental studies show that adding the second thienothiophene allows for\nnarrowing the bandgap of the molecule and thus ensuring more light harvesting in the visible region...........................
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