Conformation Dependence of Photophysical Properties of σ–π Conjugation as Demonstrated by<i>cis</i>- and<i>trans</i>-1,2-Diaryl-1,2-disilacyclohexane Cyclic Systems
photophysical properties, such as UV absorption, magnetic circulardichroism (MCD), and photoluminescence. As has been well established, the UV absorption maximum ( 1 L a band) occurs at 230-270 nm, due to the effective σ-π conjugation between the aryl groups and the disilane moiety. The absorption maximum wavelength of the transisomer is slightly longer than that of the cisisomer for all the diaryldisilanes