A Family of Porphyrin Nanotubes Assembled from Five Structural Building Blocks

Abstract

A porphyrin nanotube (PNT) of composition Cd2(TPyP)(sez)2 (TPyP = 5,10,15,20-tetra(4-pyridyl)porphyrin, sez = 1,2,5-benzoselenadiazole-5-carboxylate) has recently been shown to be a robust crystalline adsorbent for a variety of guests. The assorted molecular and metal components of the tube may be substituted with other units which yield structurally similar materials. These new variations of the original nanotubes are obtained by incorporating different metal centres within the porphyrin macrocycles, as well as employing other organic bridging and penetrating ligands. All derivatives crystallise as structurally similar nanotubes. The study has been extended to examine the crystallographic i..