“…Terephthalic acid (H 2 TPA), a rod-like aromatic diacid, has often been used in the synthesis of metal-organic frameworks as a linker molecule (Serre et al, 2007;Mukherjee et al, 2004;Sun et al, 2000;Zakaria et al, 2001;Karanović et al, 2002;Damgaard Poulsen et al, 2006;Li et al, 1998). Recently, with the increase in interest in controlling the crystalline structures of organic-based solid-state materials, H 2 TPA is being increasingly employed in constructing supramolecular structures (Mei et al, 2007;Dale et al, 2004;Zhang & Chen, 2004;Lynch & Jones, 2004;Spencer et al, 2004;Devi & Muthiah, 2007). However, the experimental conditions employed (such as the solvent, temperature, crystallization method and counter-ions) can all have an important impact on the structure of the final assembly (She et al, 2008;Meng et al, 2007Meng et al, , 2008Childs et al, 2007;Díaz et al, 2006).…”