Coumarin 343

Coumarin 343, also known as coumarin 519, is a laser dye that exists in neutral or anionic form, depending on the pH of the medium. This compund is not cell-permeable. Coumarin 343 has been used in many different applications that include solution dynamic probes, laser dyes and organic sensitizers in dye-sensitized solar cells. It is a good organic-dye photosensitizer for injecting electrons efficiently into the conduction band of semiconductors, such as TiO2, ZrO2, and ZnO. Coumarin 343 has been used in MALDI and FRET applications. Spectral data: lambdamax 443nm (EtOH), lambdaex 490nm, lambdalaser 512-520nm (range). References: (1) K.H. Drexhage, et al., Optics Commun. 15, 399 (1975) , (2) T. Honda, et al., Acta Cryt. C52, 679 (1996) , (3) R.J. Cave & E.W. Castner, J. Phys. Chem. A 106, 12117 (2002) , (4) K. Hara, et al., J. Phys. Chem. B 107, 597 (2003) , (5) M. Arduini, et al., Chem. Commun. 2003, 1606 (2003) , (6) I. Kondov, et al., J. Phys. Chem. A 110, 1364 (2006) , (7) X. Zhang, et al., J. Photochem. Photobiol. A: Chem. 194, 167 (2008) , (8) S.W. Hong & W.H. Jo, Polymer 49, 4180 (2008) , (9) X.K. Hu, et al., Int. J. Mass Spectr. 278, 69 (2008) , (10) D. Stockwell, et al., J. Phys. Chem. C 114, 6560 (2010) , (11) V.A. Lapina, et al., J. Phys. Org. Chem. 30, e3731 (2017) , (12) M. Taniguchi & J.S. Lindsey, Photochem. Photobiol. 94, 290 (2018) Appearance: Yellow to orange powder. Solubility: Soluble in DMSO or ethanol. Slightly soluble in water. Identity: Determined by 1H-NMR. Declaration: Manufactured by Chemodex. Inchi Key: KCDCNGXPPGQERR-UHFFFAOYSA-N Smiles: O=C1OC2=C3C4=C(CCCN4CCC3)C=C2C=C1C(O)=O