Spectroscopic characterization of thin solid films of a bis(chlorobenzylimidoperyleneimido)octane derivative

Abstract

The synthesis, the fabrication of thin solid films and the spectroscopic characterization of a member of a new series of bis(perylene) materials, bis(chlorobenzylimidoperyleneimido)octane (BPTCDOc), are reported. The objective of the present work was to study the fabrication of submicron evaporated thin solid films of this high molecular mass perylene dye. The molecular organization of the vacuum evaporated nanometric films formed on dielectric substrates was probed using transmission infrared spectroscopy. Films fabricated on metallic surfaces were studied by reflection-absorption infrared spectroscopy (RAIRS). The fundamental vibrational modes were obtained from the FT-IR, FT-Raman and resonance Raman scattering (RRS) of isotropic solid samples. The vibrational assignment of characteristic wavenumbers is proposed. Surface-enhanced resonance Raman scattering (SERRS) allows the observation of vibrational fundamentals as well as combinations and overtones. The report includes the electronic absorption and emission spectra, extinction coefficients, monomer and excimer fluorescence.