Dimeric and trimeric catenation of giant chiral [8 + 12] imine cubes driven by weak supramolecular interactions.

Mechanically interlocked structures, such as catenanes and rotaxanes, are fascinating synthetic targets and some are used for molecular switches and machines. Today, the vast majority of catenated structures are built upon macrocycles and only a very few examples of three-dimensional shape-persistent organic cages forming such structures have been reported. However, the catenation in all these cases was based on a thermodynamically favoured π-π-stacking under certain reaction conditions.

Triptycene End-Capped Indigo Derivatives - Turning Insoluble Pigments to Soluble Dyes.

The synthesis of a highly soluble triptycene end-capped indigo and its bay annulated derivative is reported. Both compounds have been studied by absorption and emission spectroscopy cyclic voltammetry, as well as theoretical calculations and compared to the parent indigo and bay annulated indigo. Besides a large improvement of solubility in organic solvents by the factor of approx.

Supramolecular Tuning Enables Selective Oxygen Reduction Catalyzed by Cobalt Porphyrins for Direct Electrosynthesis of Hydrogen Peroxide.

We report a supramolecular strategy for promoting the selective reduction of O for direct electrosynthesis of H O . We utilized cobalt tetraphenylporphyrin (Co-TPP), an oxygen reduction reaction (ORR) catalyst with highly variable product selectivity, as a building block to assemble the permanently porous supramolecular cage Co-PB-1(6) bearing six Co-TPP subunits connected through twenty-four imine bonds. Reduction of these imine linkers to amines yields the more flexible cage Co-rPB-1(6).

[Comparing the function of the temporomandibular joint before and after surgical treatment in a young patient with idiopathic scoliosis. Case presentation].

From an anatomic and functional point of view, the stomatognathic system and the upper cervical spine are closely connected. Together with the complex neuromuscular relationships, this generates an important field of cooperation between dentists and orthopedics. The aim of this case report was to demonstrate the improvements of temporomandibular joint (TMJ) function after orthopedic surgery in case of a patient with idiopathic scoliosis.