Abstract
The surface-enhanced resonant Raman scattering (SERRS) of perylenetetracarboxylic derivatives obtained on colloidal silver and on silver island films is reported. The molecular adsorption onto the metal colloid is very slow, the Raman bands have a narrow bandwidth and the spectral data are characteristic of physical adsorption. The study includes N-hexyl perylenetetracarboxylic monoimide (HPTCO), N-butyl perylenetetracarboxylic diimide (BPTCNH), N-isobutyl perylenetetracarboxylic diimide (IBPTCNH) and N-pentyl perylenetetracarboxylic diimide (PPTCNH). The assignment of the characteristic normal modes and the spectroscopic characterization of PTCNH materials were carried out using Fourier transform IR (FTIR) spectra of KBr pellets, resonant Raman scattering (RRS) spectra and electronic absorption and fluorescence spectra.
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