Hybrid organic semiconductors including chalcogen atoms in [pi]-conjugated skeletons: Tuning of optical, redox, and vibrational properties by heavy atom conjugation

The interactions between heteroatoms (S, Se and Te) and conjugated skeletons are analyzed using electronic absorption and fluorescence spectroscopies, electrochemistry and vibrational Raman spectroscopy. Unconventional long-range heteroatom-heteroatom interactions are suggested which develop from the existence of effective [pi]-conjugated channels.