Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine (PTAA; CAS no. 1333317-99-9), a family member of poly(triaryl)amine, is an excellent hole-transporting and electron-blocking semiconducting material due to its electron-rich components. It is a popular choice for perovskite solar cell devices, due to its:

• Easy processibility
• Good hole transport and electron blocking qualities
• High thermal stability

• Use in both regular and inverted devices
• 
  

  CAS Number	1333317-99-9
  Chemical Formula	(C21H19N)n
  Molecular Weight	Please see batch details
  HOMO / LUMO	HOMO 5.25 eV LUMO 2.30 eV [6]
  Solubility	THF, toluene, chloroform, chlorobenzene, dichlorobenzene
  Recommended Processing Solvents at 10mg/ml	THF (8mg/ml)
  Synonyms	Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine Poly(triarylamine)
  Classification / Family	Polyamines, Hole-transport layer materials, Electron-blocking layer materials, Organic semiconducting materials, Organic photovoltaics, Polymer solar cells, OLED materials

  Chemical Structure

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  Chemical structure of PTAA, CAS no. 1333317-99-9