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A simple new preparation method for silver surface-enhanced Raman scattering (SERS) substrate (Ag/Cu film) was developed by reduction of aqueous Ag+ on copper foil, which is used for making print circuit board. The properties of the substrate were evaluated. The approximate limit of detection (LOD) was measured using 2,2′-bipyridine (bpy) and 1,1′-diethyl-trimethincyanine dye (TMC) as probing compounds. The LOD of bpy and TMC are 1 nanomole and 0.13 nanomole, respectively. The film-to-film reproducibility is comparable to the nitric acid etched silver foil SERS substrate. The surface morphology of the Ag/Cu film was observed by scanning electron micrography. The high SERS sensitivity of the film may be attributed to its special surface structure.

The thin films of cis-oleamide (OlA), steamide (StA), 2-undecylimidazole (UDIM), and 2-nonylbenzimidazole (NBIM) were prepared by spreading their solutions on Ag and KRS-5 substrate evaporating the solvent afterward, with the thickness in the range of 30–100 nm. The amphiphilic molecules in the multilayers were demonstrated to be highly organized by infrared reflection absorption and transmission spectroscopy. The orientation of the head group and the hydrocarbon chain of the amphiphiles in the film has been semiquantitatively evaluated. The C = O group of the amides, as well as the ring plane of imidazole and benzimidazole, has been proved to be parallel to the substrate surface. The CH stretching spectral features of the long hydrocarbon chain of the multilayers are quite different from the reported spectra of the stearate LB multilayer. The orientation of the hydrocarbon chain in the multilayers of StA and UDIM was evaluated to be inclined by about 30° from the substrate surface normal.

The FT-Raman and selected IR spectra of 14 heterobimetallic complexes of (CO) 3 CrC 6 H 5 -C 5 H 4 M(CO) n (NO) m X (M = transition metal, X = other ligands) are reported. FT-Raman exhibits distinct strong characteristic bands of coordinated C 6 H 5 -C 5 H 4 ligand ring deformation near 1540, 1490 and 1280 cm −1 and the coordinated phenyl ring deformation mode near 1000 cm −1 , which are negligible in IR spectra. It is also easy to find the M-CO stretching and M-C-O bending as well as phenyl-M stretching bands in the FT-Raman spectra. The v(CO) IR absorptions in THF solution were reasonably assigned according to the local symmetry of the complexes.

SERS and SERRS spectra in aqueous silver sol for Ru(II) polypyridine complexes with 2,2'-bipgridine (bpy) and 1,1'-biisoquinoline (Q) [Ru(bpy) 3 2+ , RuQ 3 2+ , Ru(bpy) 2 Q 2+ and Ru(bpy)Q 2 2+ ] were observed with 457.9, 488.0, 514.5 and 632.8 nm excitation. The vibrational modes of the conjugated ring system in the 1600-1400 cm −1 region are enhanced by the resonance effect. Some bands in the SERS spectra of the four complexes show remarkably high intensities with longer wavelength excitation. This may be explained by surface selection rules

The far i.r. and the Raman spectra of perfluorocyclopentane are reported for the first time. Normal coordinate analyses of C 4 C 6 perfluorocycloparaffins are performed on the basis of the MUBFF and the calculated structure parameters from molecular mechanics. The calculation reveals a strong mixing and coupling of CF str., CC str. and deformation modes. However several characteristic strong Raman and i.r. bands for these cyclic compounds have been found helpful for structure elucidation.

The vibrational Raman band shapes of N2, O2, and CO2 dissolved in perfluorotripropyl amine (FTPA), perfluorodecalin (FDC), and perfluorobenzene (FB) have been measured under elevated pressure (10–55 atm.). The full width at half‐height (FWHH) of N2 and O2 vibrational spectra in the perfluoro‐solvents increases with the order FTPA