“…The compounds 10 , 12 , and 14 , which can be regarded as Te/chalcogen-bridged stilbenes, exhibited a trend of increasing λ max (the longest wavelength absorption maxima) upon changing the extra chalcogen atom from O to Se. This trend is in line with the trends observed for related chalcogen-bridged π-conjugated systems, 25 , 26 and is also consistent with the trend of the lowest transition energies, which are largely represented by the HOMO–LUMO (π–π*) transition (see the ESI † for details). Compound 11 , the cross-conjugated isomer of 10 , showed a distinctly shorter λ max .…”