Synthesis, optical and electrochemical properties of (D-π)₂-type and (D-π)₂Ph-type fluorescent dyes.

ABSTRACT: The (D-π)₂-type fluorescent dye OTT-2 with two (diphenylamino)carbazole-thiophene units as D (electron-donating group)-π (π-conjugated bridge) moiety and the (D-π)₂Ph-type fluorescent dye OTK-2 with the two D-π moieties connected through a phenyl ring were derived by oxidative homocoupling of a stannyl D-π unit and Stille coupling of a stannyl D-π unit with 1,3-diiodobenzene, respectively. Their optical and electrochemical properties were investigated by photoabsorption and fluorescence spectroscopy, time-resolved fluorescence spectroscopy, cyclic voltammetry (CV) and molecular orbital (MO) calculations. In toluene the photoabsorption and fluorescence maximum wavelengths (λ_max,abs and λ_max,fl) of OTT-2 appear in a longer wave

SUBMITTER: Takemura K 

PROVIDER: S-EPMC9443425 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature