Organic channel inclusion compound featuring an open pore size of 12A

A first example of a purely organic material showing an open pore size of 12Angstrom for empty channels was obtained for micrometer sized crystals of 2,4,6-tris-(4-bromophenoxy)-1,3,5-triazine (BrPOT). The zeolitic-like form of the known inclusion compound was formed by a solid to solid transformation from micrometer large particles of the rhombohedral modification of BrPOT taking up gaseous CS2. Long-term thermal stability of the empty channel structure was found up to about 60degreesC. Functionalisation of the pore volume by including aromatic amines allowed sorption of molecular iodine. It is proposed that micrometer sized channel inclusion crystals are a promising entry to produce open pore modifications, which in the case of large crystallites are known to collapse into the solvent-free structure by the process of desolvation. (C) 2004 Elsevier Inc. All rights reserved.