Design, Synthesis and Electronic Properties of Novel Spirobifluorene Derivatives

Abstract

This article describes the design, synthesis and studied of electronic properties of four novel spirobifluorene derivatives. The synthesized compounds were characterized by 1 H/ 13 C NMR spectroscopy and mass spectrometry and their optical and electronic properties were studied by UV-visible spectroscopy and cyclic voltammetry (CV) measurements, respectively. Incorporation of flexible 2-methoxyethyl side chain (MeO-CH 2 CH 2-) on the aromatic moiety would allow the establishment of new Van Der Waals interaction with organic solvents and thus, might improve the solubility of spirobifluorene derivatives in organic solvents. All the compounds exhibited absorption peak in UV region and centered at around 380-388 nm. Cyclic voltammetry measurements showed that the redox peaks are highly reversible. The HOMO energy levels, calculated from CV were found around − 5.18 to − 5.32 eV. Overall optical and electrochemical properties revealed that these compounds can be used as promising materials for optoelectronic devices.