TpOx-2-An

TpOx-2-An is a UV excitable fluorescent material with a polycyclic aromatic donor-acceptor structure where the triphenoxazole core acts as a donor and the aromatic group on the two position of the oxazole (2-anthracene) act as the acceptor group. The push-pull, donor-acceptor, structure facilitates intramolecular charge transfer in the excited state that results in a 264 nm emission Stokes Shift. TpOx-2-An is also a photo-conducting Discotic Liquid Crystalline (DLC) material with mesophase transition onset temperature of 162°C. TpOx-2-An is designed for 355 nm and 405 nm excitation with emission at 536 nm with quantum yield of 0.51, high thermal, chemical and photostability. TpOx-2-An has potential uses in fluorescent dye staining, organic electronic and photonics, and imaging applications.

TpOx-2-An can be purchased from Sigma Aldrich website.

Please contact us for more information.

 

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The TpOx-2-An properties (In EtOAc Solvent):

  • Abs λmax  = 272 nm
  • ϵ at Abs λmax = 105,000 M-1 cm-1
  • ϵ at Abs λ355 = 18,400 M-1 cm-1
  • ϵ at Abs λ405 = 22,100 M-1 cm-1
  • Emis λmax = 536 nm
  • pSS = 264 nm
  • Quantum Yield (Φ) = 0.51
  • Fluorescence Lifetime = 6 ± 1 ns

 

  • Band Gap (Optical, Solution state) = 2.80 eV
  • HOMOCV = -5.50 eV
  • LUMO = -2.55 eV

 

Discotic Liquid Crystal Phase transition temperature:

  • Heating: Crys – Colh 162°C, Colh – Iso 172°C
  • Cooling: Iso – Colh – 87°C, Colh – Crys – 151°C

 

Estimated solubility:

  • DCM, THF  > 1 mg /mL
  • MeCN, DMSO < 1 mg /mL
  • Insoluble in aqueous solvents