1 Sublimed Grade; 2 High purity. NPBN,N'-Bis(naphthalen-1-yl)-N,N'-bis(phenyl)benzidine CAS: 123847-85-8Formula: C44H32N2M.W.: 588.74M.P.: 281-283°CAbs: 341nm(CH2Cl2)PL: 450nm(THF) Hole Transport Materials: NPB, TPD, TAPC, Spiro-TAD;Hole Injection Materials: F4TCNQ, TCNQ, PPDN, CuPC, TiOPC;Electron Transport Materials/Hole Blocking Materials: BCP, BPhen, TPBi, Alq3, Liq, NBphen, TAZ, Be(PP)2; ...