Near and shortwave infrared polymethine dyes
Near infrared and shortwave infrared dyes can have polymethine structures.
1. A flavylium polymethine dye selected from:
wherein
X − is Cl − , ClO 4 − , BF 4 − , Br − , I − , tosylate, triflate, trifluoroacetate, acetate, bromide, or tetraalkylborate, and
R is hydrogen, alkyl, acyl or heteroalkyl.
2. The flavylium polymethine dye of claim 1 , wherein the flavylium polymethine dye is
3. The flavylium polymethine dye of claim 1 , wherein the flavylium polymethine dye is
4. The flavylium polymethine dye of claim 1 , wherein the flavylium polymethine dye is
5. The flavylium polymethine dye of claim 1 , wherein the flavylium polymethine dye is
6. The flavylium polymethine dye of claim 1 , wherein the flavylium polymethine dye is
wherein
R is hydrogen, alkyl, acyl or heteroalkyl.
7. The flavylium polymethine dye of claim 1 , wherein the flavylium polymethine dye is
8. The flavylium polymethine dye of claim 1 , wherein the flavylium polymethine dye is
9. The flavylium polymethine dye of claim 1 , wherein the flavylium polymethine dye is