Abstract
Novel sandwich-type doubledecker and tripledecker cerium complexes, bis[5,15-bis(3,4-dialkoxyphenyl)porphyrinato]cerium(IV)
(2: [(CnO)4BPP]2Ce; n
= 14), bis[5,10,15,20-tetrakis(3,4-dialkoxyphenyl)porphyrinato]cerium(IV)
(5: [(CnO)8TPP]2Ce; n
= 8,10,12,14,16,18), and tris[5,10,15,20-tetrakis(3,4-dialkoxyphenyl)porphyrinato]cerium(IV)
(6: [(CnO)8TPP]3Ce2; n
= 10), have been synthesized by using the corresponding metal free derivatives, 5,15-bis(3,4-dialkoxyphenyl)porphyrin (1: (CnO)4BPPH2) and 5,10,15,20-tetrakis[3,4-bis(octadecyloxy)phenyl]porphyrins (4: (CnO)8TPPH2) which were previously reported to show a discotic lamellar(DL) mesophase. The mesophase structures of all these sandwich-type cerium complexes have been characterized in detail by microscopic observation,