Microstructure of J-Band-Forming Cyanine Dye Monolayer Probed by Means of Second-Harmonic Generation.

摘要

We have determined the microscopic symmetry of the J-band-forming amphiphatic cyanine dye (S120) to be C(2) by means of second-harmonic generation. We also demonstrate that the macroscopic distribution of the J aggregates is not isotropic, a result that facilitates our determination of the microscopic symmetry. Keywords: J-band, Microstructure, Layers, Surface analysis, Cyanine dyes, Organic pigments, 1-Methyl-1-octadecyl-2,2-cyanine, Iodide, S120. (jg)