Bicomponent Supramolecular Packing in Flexible Phthalocyanine Networks

Two-Dimensional Chiral Molecular Networks from Achiral Building Blocks: A Computational Study

“…As it can be seen in the figure, the cross-shaped molecules form highly ordered patterns, regardless of the arm length. Note that, contrary to the tripod molecules with n ¼ 1, the cross-shaped molecules assembly into a highly ordered compact ð ffiffi ffi 5 p  ffiffi ffi 5 p Þ structure resembling those observed experimentally for phthalocyanines [27]. In the remaining cases the resulting networks comprise square voids of increasing area.…”

“…Depending on symmetry elements, the molecules are further called tripod-shaped (C 3 axis) and cross-shaped (C 4 axis), as indicated in the figure. These two structures were inspired by the shape of molecules such as derivatized annulenes [18,23] and metal phthalocyanines [26][27][28], respectively. To mimic the formation of intermolecular donor-acceptor bonds the molecular arms were terminated with segments whose energetic parameters can differ from the rest of the molecule.…”

Self-assembly of zwitterionic molecules on a Au(232321) surface at low temperature

“…Based on these results, a model of adsorption can be proposed in which MSPS are adsorbed in a ''scorpion shape" with their p-skeleton parallel to the surface and the aliphatic chain pointing out of the plane, as described in Fig. 5. p-Skeleton/metal interactions are weak but sufficient to allow the adsorption of the molecules on a metal surface at low temperature [2,4,6,8]. The weakness of this interaction allows isolated molecules to diffuse on the surface even at low temperature (77 K) (see striae on Fig.…”

“…In this field, the most interesting results are obtained on metals or HOPG because in these cases, the molecules/surface interactions are often weaker than the molecules/molecules interactions [2]. Therefore, the growth of largescale self-assemblies was successfully achieved, thanks to noncovalent interactions (hydrogen bonding, metal coordination, van der Waals interactions, p-p interactions) [5][6][7][8][9][10] or more recently to covalent bonding [11][12][13][14][15][16][17][18]. Scanning tunneling microscopy (STM) has emerged as a powerful tool to investigate the orientations and the conformations of organic molecules onto surfaces [19].…”

Chemisorption of Trimesic Acid on a Si(111)-7 × 7 Surface

“…In this way, the carboxylic acid derivatives are extensively used to develop supramolecular assemblies on metal surface due to the strong interaction between carboxylic moieties. [3][4][5][6][7][8][9][10][11][12] In the case of semiconductor surfaces, the molecule/substrate interaction is important for the growth of supramolecular self-assemblies. [13][14][15][16][17][18][19][20][21][22][23][24][25] In these cases, carboxylic acid derivatives have been successively used to develop organic networks.…”