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Five newly designed organic small molecules (DSBTs, 1–5) with 3,3′-bithienyl unit had been successfully synthesized with 3-bromothiophene as the starting material. In both UV–vis absorption and fluorescence emission investigation, compound 3 with nitro-substitution exhibited the largest bathochromic shift and narrowest optical bandgap among 1–5. Further photophysical studies showed that 3 had obvious...
A new series of organic D–π–A dyes bearing either quinazoline or quinoline as the conjugated bridges in the chromophore with a diphenylamine moiety as the electron donor and a cyanoacetic acid unit as the electron acceptor, have been designed and synthesized for photoconversion in dye sensitized solar cells (DSSCs). The absorption spectra, density functional theory calculations, electrochemical and...
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