Stable heptamethine pyrylium dyes that absorb in the infrared
β Scribed by Reynolds, G. A.; Drexhage, K. H.
- Book ID
- 111898050
- Publisher
- American Chemical Society
- Year
- 1977
- Tongue
- English
- Weight
- 463 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0022-3263
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## Abstract Three methods were used to synthesize a series of the title compounds. The ketones absorb in the visible region, and upon protonation (pH<6) they are converted to hydroxyβsubstituted heptamethine cyanines that show an intense absorption in the nearβinfrared region (>700 nm). The convers
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