Photochromic Properties of New Benzoindene‐Fused 2 H ‐Chromenes
The synthesis and the photochromic properties of new photochromic 6,7‐ and 7,8‐benzoindene annellated benzopyrans are described. When compared to parent indeno‐fused 2 H ‐chromenes (2 H ‐[1]benzopyrans), compounds 10 and 12 exhibit a significant bathochromic shift of maximum‐absorption wavelength, a...
Gespeichert in:
| Veröffentlicht in: | Helvetica chimica acta 2003-03, Vol.86 (3), p.570-578 |
|---|---|
| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | The synthesis and the photochromic properties of new photochromic 6,7‐ and 7,8‐benzoindene annellated benzopyrans are described. When compared to parent indeno‐fused 2
H
‐chromenes (2
H
‐[1]benzopyrans), compounds
10
and
12
exhibit a significant bathochromic shift of maximum‐absorption wavelength, an increase in the colorability, and similar fading rates. |
|---|---|
| ISSN: | 0018-019X 1522-2675 |
| DOI: | 10.1002/hlca.200390057 |