546283 Sigma-Aldrich

Coumarin 6


Synonym: 3-(2-Benzothiazolyl)-N,N-diethylumbelliferylamine, 3-(2-Benzothiazolyl)-7-(diethylamino)coumarin

  • CAS Number 38215-36-0

  • Empirical Formula (Hill Notation) C20H18N2O2S

  • Molecular Weight 350.43

  •  Beilstein/REAXYS Number 1085798

  •  EC Number 253-830-2

  •  MDL number MFCD00041869

  •  PubChem Substance ID 329758042



Related Categories Dye Sensitized Solar Cell (DSSC) Materials, Dyes, Light Emitters and Dopants, Materials Science, OLED and PLED Materials,
assay   ≥99%
mp   208-210 °C (lit.)
absorption   λmax 443 nm
fluorescence   λem 494 nm in THF
  λem 505 nm in ethanol (Lasing peak 534 nm, lasing range 515 - 558 nm (DMSO), pump source XeCl (308 nm))
Orbital energy   HOMO 5.4 eV 
  LUMO 2.7 eV 
OLED Device Performance   ITO/Alq3:Coumarin 6/Mg:Ag
• Color: green
• Max. EQE: 2.5 %


General description

Coumarin 6 as fluorescence lifetime standards in fluorescence spectroscopy was reported to be the most stable for performing lifetime experiments.


It may be used to calibrate fluorescence lifetime imaging microscopy system.

Laser dye


100 mg in glass insert

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis (COA)

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Protocols & Articles


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Dr. Hans Desilvestro and Dr. Yanek Hebting

Dyesol Ltd., 3 Dominion Place, Queanbeyan NSW 2620 AUSTRALIA
Keywords: Absorption, Calorimetry, Capillary electrophoresis, Ligands, Oxidations, Photosynthesis, Recombination, Reductions, Separation, Solar cells

Solubility enhancement using PEG-polyester diblock copolymers for drug delivery

One of the common difficulties with intravenous drug delivery is low solubility of the drug. The requirement for large quantities of saline to dissolve such materials limits their clinical use, and o...
Keywords: Clinical, Evaporation, Filtration, Scintillation, Solvents, Spectroscopy

Understanding and Successfully Applying Materials for Dye-Sensitized Solar Cells

Hans Desilvestro, Yanek Hebting, Mikael Khan, Damion Milliken Dyesol, Queanbeyan NSW 2620, Australia Email:
Keywords: Absorption, Adhesion, Adsorption, Bacterial conjugations, Calorimetry, Deposition, Diffusion, Electronics, Extinction coefficient, Hydroxylations, Ligands, Mass spectrometry, Nucleic acid annealing, Oxidations, PAGE, Printed electronics, Recombination, Reductions, Semiconductor, Solar cells, Solvents

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