Abstract
The vis-near-IR spectra and synthesis of some quinones compounds such as 2,9-dichloropentacene-5,7,12,14-tetrone (2,9-dichloro-PDQ) and their semi-quinone anion radicals were studied. The semiquinones of the diquinones show unusual shifts to thenear-IR region (1.0 μm) compared to their precursors; these long-wavelength near-IR hands are assigned to π-π* transitions from delocalized anion radicals.
| Original language | English |
|---|---|
| Pages (from-to) | 79-84 |
| Number of pages | 6 |
| Journal | Dyes and Pigments |
| Volume | 23 |
| Issue number | 2 |
| DOIs | |
| State | Published - 1993 |
| Externally published | Yes |