New Mesophase Morphologies Formed by Facial T-shaped Ternary Amphiphiles Dissertation zur Erlangung des akademischen Grades doctor rerum naturalium (Dr. rer. nat.) vorgelegt der Mathematisch-Naturwissenschaftlich-Technischen Fakultät (mathematisch-naturwissenschaftlicher Bereich) der Martin-Luther-Universität Halle-Wittenberg von Herrn M. Sc. Bin Chen geb. am 11. 08. 1975 in Shanghai, V. R. China Gutachter: 1. Prof. Dr. C. Tschierske2. Prof. Dr. R. Zentel3. Prof. G. Ungar Halle (Saale), den 24.08.2004 urn:nbn:de:gbv:3-000007129[ http://nbn-resolving.de/urn/resolver.pl?urn=nbn%3Ade%3Agbv%3A3-0000071 29] Acknowledgment This work was carried out in the Institute of Organic Chemistry, Martin-Luther University, Halle-Wittenberg, during the time from March 2001 to May 2004 under the supervision of Professor Dr. C. Tschierske. I am most grateful to Professor Dr. C. Tschierske for giving me the opportunity to do this work with financial support in his research group, for his most valuable advice and encouragement in all stages of my Ph.D. studies. I am gratefully thankful to Dr. S. Diele, Dr. U. Baumeister, Dr. K. Das and Ms. Gottschlich for the X-ray investigations. My special thanks go to Professor G. Ungar, Dr. X.-B. Zeng for the X-ray (Synchrotron) measurements and the reconstruction of the electron density maps. My thanks also go to Professor Dr. H.