... and tends to form multilayered sheets, which may hamper its ability as an anodic buffer material since similar ... 1 H NMR (300 MHz, CDCl 3 ): δ 6.63–6.76 (m, 4H), 3.87 (t, J = 6.61 Hz ... The thermal evaporation of organic materials was carried out at a chamber pressure of 10 −4 Pa. ...