TpOx-2-Nap

TpOx-2-Nap 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-naphthalene) act as the acceptor group. The push-pull, donor-acceptor, structure facilitates intramolecular charge transfer in the excited state that results in a 222 nm emission Stokes Shift. TpOx-2-Nap is also a photo-conducting Discotic Liquid Crystalline (DLC) material with mesophase transition onset temperature of 96°C. TpOx-2-Nap is designed for 355 nm and 405 nm excitation with emission at 494 nm with quantum yield of 0.55, high thermal, chemical and photostability. TpOx-2-Nap has potential uses in fluorescent dye staining, organic electronic and photonics, and imaging applications.

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

Please contact us for more information.

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

  • Abs λmax  = 272 nm
  • ϵ at Abs λmax = 164,000 M-1 cm-1
  • ϵ at Abs λ355 = 25,500 M-1 cm-1
  • ϵ at Abs λ405 = 11,900 M-1 cm-1
  • Emis λmax = 494 nm
  • pSS = 222 nm
  • Quantum Yield (Φ) = 0.55
  • Fluorescence Lifetime = 6 ± 1 ns
  • Band Gap (Optical, Solution state) = 3.57 eV
  • HOMOCV = -5.45 eV
  • LUMO = -2.47 eV
  • Thermal degradation onset = ~380°C

 

Discotic Liquid Crystal Phase transition temperature:

  • Heating Crys – Colh 88°C, Colh – Iso 193°C
  • Cooling Iso – Colh – 196°C, Colh – Crys – 152°C

 

Solubility:

  • THF > 1 mg /mL
  • DCM > 1 mg /mL
  • MeCN < 0.33 mg / mL
  • DMSO < 0.03 mg / mL