Induction of Lamellar Mesomorphic Structures in Columnar-Phase-Forming 1,3,5-Triazines through Charge-Transfer Interactions with Electron Acceptors This work was supported by the Deutsche Forschungsgemeinschaft and the Fonds der Chemischen Industrie. D.J. is very grateful to Prof. C. Tschierske, Martin-Luther-Universität Halle, Germany, for helpful discussions.