Preparation and Characterization of a Transparent Thin Film of the Layered Perovskite, K2La2Ti3O10, Intercalated with an Ionic Porphyrin

An intercalation compound of the layered perovskite, K 2 La 2 Ti 3 -O 1 0 , with 5,10,15,20-tetrakis(N-methylpyridinium-4-yl)-21H,23H-porphin (TMPyP 4 + ), as the first example of a large molecule intercalation into this perovskite, was successfully prepared by a guest-exchange method using the n-PrNH 3 + -H x La 2 Ti 3 O 1 0 intercalation compound as an intermediate. Its structural characterization was carried out by means of X-ray diffraction, UV, and polarized spectroscopic investigations. The porphyrin molecules were revealed to be situated with their molecular planes inclined to the (La 2 Ti 3 O 1 0 ) 2 - layers at an angle of 58° because of the high charge density of the host layers.

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