TpOx-Ph

TpOx-Ph 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 (phenyl) act as the acceptor group. The push-pull, donor-acceptor, structure facilitates intramolecular charge transfer in the excited state that results in a 197 nm emission Stokes Shift. TpOx-Ph is also a photo-conducting Discotic Liquid Crystalline (DLC) material with mesophase transition onset temperature of 111°C. TpOx-Ph is designed for 355 nm and 405 nm excitation with emission at 467 nm with quantum yield of 0.49, high thermal, chemical and photostability. TpOx-Ph has potential uses in fluorescent dye staining, organic electronic and photonics, and imaging applications.

TpOx-Ph can be purchased from Sigma Aldrich website.

Please contact us for more information.

 

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The TpOx-Ph properties (In EtOAc Solvent):

  • Abs λmax  = 270 nm
  • ϵ at Abs λmax = 136,000 M-1 cm-1
  • ϵ at Abs λ355 = 15,600 M-1 cm-1
  • ϵ at Abs λ405 = 2,000 M-1 cm-1
  • Emis λmax = 467 nm
  • pSS = 197 nm
  • Quantum Yield (Φ) = 0.49
  • Fluorescence Lifetime = 6 ± 1 ns

 

  • Band Gap (Optical, Solution state) = 3.03 eV
  • HOMOCV = -5.45 eV
  • LUMO = -2.52 eV
  • Thermal degradation onset = ~380°C

 

Discotic Liquid Crystal Phase transition temperature:

  • Heating: Crys – Colh 110°C, Colh – Iso 189°C
  • Cooling: Iso – Colh – 137°C, Colh – Crys – 110°C

 

Solubility:

  • THF > 1 mg /mL
  • DCM > 1 mg /mL
  • MeCN < 0.24 mg / mL
  • DMSO < 0.16 mg / mL