The Synthesis of Two Types of Layered Niobate Hybrid Materials by the Selective Intercalation of Ionic Porphyrin

摘要

K_4Nb_6O_(17) is a layered semiconductor possessing two different layer structures, i.e., interlayers I and II. The present paper reports on the selective synthesis of two types of layered niobate hybrid materials by the introduction of 5,10,15,20-tetrakis (1-methyl-4-pyridinium)-21H, 23H-porphyrin (TMPyP~(4+)) into either interlayer I or into both I and II by a guest-guest exchange method using the intercalation compounds (MV~(2+))_xK_(4-2x)Nb_6O_(17) and (PrNH_3~+)_xH_(4-x)Nb_6O_(17) as precursors.