Investigation on two triphenylene based electron transport materials

摘要: Promoting electron mobility is the key to designing high performance transport materials (ETMs). Formation of intermolecular interaction can be helpful enhance their mobilities as a result more ordered molecular stacking. Here, reveal inherent influence π-π stacking on mobilities, we designed two ETMs, namely, 2,4-diphenyl-6-[3-(2-triphenylenyl)phenyl]-1,3,5-triazine (TPTRZ) and 2,4-diphenyl-6-[4′-(2-triphenylenyl)[1,1′-biphenyl]-3-yl]-1,3,5-triazine (TPPTRZ). Thermal, photophysical electrochemical measurement results indicate they are good ETM candidates. Additionally, TPTRZ TPPTRZ exhibit 3.60×10−5 3.58×10−5 cm2 V−1 s−1, respectively, at an electric field 7×105 V cm−1. By taking X-ray single crystal structure, theoretical calculation time flight (TOF) into consideration, it revealed that strong induced by planar triphenylene triphenyltriazine units renders small energetic positional disorder parameters, in thereby. further enhancing stacking, ETMs with even higher thus anticipated.