Self-assembly of zinc aminoporphyrins

Biomimetic alkane oxidation by iodosylbenzene and iodobenzene diacetate catalyzed by a new manganese porphyrin: Water effect

“…6 shows that, when The results depicted in Fig. 6 show that addition of imidazole to the system based on the [Mn II TPP]Cl significantly improves product yield and selectivity toward Cy-ol, which agrees with literature reports [16,22] A c c e p t e d M a n u s c r i p t product yield significantly, because the amino group in the MnP may coordinate to the metal center of another MnP and diminish the effects of imidazole [43].…”

A Supramolecular System for Quantifying Aromatic Stacking Interactions

“…A two-dimensional ROESY experiment was carried out on the final solution to assign unambiguously all of the signals, and the data were analysed by using nonlinear curve fitting for both dimerisation and aggregation isotherms NMRDil Dimer and NMRDil Agg. [56] These estimate the dimerisation constant and the limiting bound and free chemical shifts. The dimerisation constant is quoted as the weighted mean based on the observed change in chemical shift for all of the signals monitored.…”

Noncovalent Assembly of [2]Rotaxane Architectures

“…[12,13] H 4 2 and a model compound 3, which lacks the stopper groups, were therefore prepared from terephthaloyl dichloride and the corresponding amines. [14] The 1 H NMR spectrum of mixtures of Zn1 and H 4 2 showed signals corresponding to the pure compounds as well as a set of new resonances. Integration of these signals indicated the formation of a 2:1 complex (namely, (Figure 3), which suggests that the mode of binding for both systems is the formation of the H-bonded complex shown in Figure 2.…”

“…The photochemical properties of the porphyrin subunits should confer this system with interesting photophysical properties: for example, singlet energy transfer between the macrocycle and axle components. [17] Experimental Section H 4 2: A solution of 5,10,15-tris(4-n-pentylphenyl)-20-(3-aminophenyl)-21H,23H-porphin [14] (0.2856 g, 0.34 mmol) and triethylamine (0.07 mL, 0.51 mmol) in dry dichloromethane (10 mL) was added to a solution of terephthaloyl dichloride (0.0172 g, 85 mmol) in dry dichloromethane (20 mL), and the reaction mixture was left stirring overnight at room temperature. After evaporation of the solvent under reduced pressure, the products were separated by column chromatography on silica gel using a mixture of dichloromethane/triethylamine (2500/1) as eluant.…”