TpOx-Ph-p-CF3

TpOx-Ph-p-CF3 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 (4-trifluoromethyl-phenyl) act as the acceptor group. The push-pull, donor-acceptor, structure facilitates intramolecular charge transfer in the excited state that results in a 255 nm emission Stokes Shift. TpOx-Ph-p-CF3 is also a photo-conducting Discotic Liquid Crystalline (DLC) material with mesophase transition onset temperature of 145°C. TpOx-Ph-p-CF3 is designed for 355 nm and 405 nm excitation with emission at 526 nm with quantum yield of 0.51, high thermal, chemical and photostability. TpOx-Ph-p-CF3 has potential uses in fluorescent dye staining, organic electronic and photonics, and imaging applications.

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The TpOx-Ph-p-CF3 properties (In EtOAc Solvent):

  • Abs λmax  = 271 nm
  • ϵ at Abs λmax = 104,000 M-1 cm-1
  • ϵ at Abs λ355 = 10,800 M-1 cm-1
  • ϵ at Abs λ405 = 7,000 M-1 cm-1
  • Emis λmax = 526 nm
  • pSS = 255 nm
  • Quantum Yield (Φ) = 0.51

 

  • Band Gap (Optical, Solution state) = 2.94 eV
  • HOMOCV = -5.44 eV
  • LUMO = -2.5 eV

 

Discotic Liquid Crystal Phase transition temperature:

  • Heating: Crys – Colh 138°C, Colh – Iso 281°C

 

Solubility:

  • THF > 1 mg /mL
  • DCM > 1 mg /mL
  • MeCN < 0.23 mg / mL
  • DMSO < 0.23 mg / mL