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A series of new organic dyes containing 2,2′-bithiophene unit as a π-linker to connect three electron-donors (including carbazole, DH-45; phenothiazine, DH-46; triphenylamine, DH-47) at 3,4′,5′-positions have been designed and synthesized for dye-sensitized solar cells. The experimental results and theoretic calculations indicated that the large steric hindrance among three electron-donors and 2,2′-bithiophene...
Three new organic dyes with one, two and three branched D–π–A structures derived from an electron donating triphenylamine core and connected by 1,2,3-triazole group to an electron deficient cyanoacrylate system have been conveniently synthesized via a ‘Click’ reaction. It was found that all three dyes show UV–vis absorptions in the 300–500 nm range with high molar extinction coefficients. A red-shift...
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