Abstract
Intercalation of triarylpyrylium salts into the MnPS3 layered phase has been achieved. The formation of J-aggregates in the interlayer space is suggested on the basis of UV–VIS absorption and emission spectroscopy experiments. The extended dipole model approximation is used to derive structural information that appears consistent with the X-ray powder diffraction data. However, in contrast to previous results, none of the intercalates exhibit any second harmonic generation. Finally, the important influence of the host phase dielectric properties on aggregate formation is emphasized.
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