A hexaazatriphenylene(HAT) derivative that bears two n-octyl chains was designed and synthesized.Its photophysical and electrochemical properties have been investigated.SEM study revealed that it could self-assemble into well-ordered 1D nanoribbons or 2D microsheets,which depends on the polarity of the solvents used. A hexaazatriphenylene (HAT) derivative that bears two n-octyl chains was designed and synthesized. It photophysical and electrochemical properties have been investigated. SEM study revealed that it could self-assemble into well-ordered 1D nanoribbons or 2D microsheets, which depends on the the polarity of the solvents used.