Supramolecular Regioselectivity of meso-Phenylporphyrin Sulfonation. Synthesis of 5,10,15-Tris(4’-sulfophenyl)porphine

Abstract

The results of the prognostic computer synthesis of meso-phenylporphyrins Н 2 Р(Ph) n

Surface Properties, Interface Events and Energy Relaxation Processes in Nanoassemblies Based on Ag-In-S/ZnS Quantum Dots and Porphyrins

“…f FRET rate constant k DA for the D-A pair was calculated as: [117,118] . (6) Correspondingly, QD PL decay shortening is calculated by Molar decimal extinction coefficients  Q  4000-50000 M -1 cm -1 for Q-bands of porphyrins and Zn-porphyrins [43,50,[77][78][79][80][81][82] (Table 1) correspond to an effective length of the transition dipoles l  1.1-1.3 Å. [50] Using  values for AIS/ZnS/GSH QDs in the region of the first excitonic transition [83][84][85] the correspondent values for transition dipole moment were estimated to be  = 6.7-8.1 Debye.…”

“…Positively charged 5,10,15,20-tetra(N-methyl-4-pyridyl)porphyrin tetraiodide, H 2 P 4+ and its Zn-complex, ZnP 4+ were synthesized and purified according to methods described in literature. [77][78][79][80][81] For comparison, absorption and fluorescence spectra were analysed also for axial aqua Zncomplex, (H 2 O)ZnP 4+ and Zn-porphyrin extra-coordinated with strong ligands (L)ZnP 4+ such as pyridine (Py), imidazole (Im) or anion (OH -) in water at pH 7.5 and T=298 K. Chemical structures and absorption/fluorescence spectra of the corresponding individual porphyrins are presented in Figure 1. It was experimentally proven that in the concentration range C = (3-30)•10 -5 M, all porphyrins (used in titration experiments) remain in monomeric form in water at pH 7.5 and T=298 K. [75] For H 2 P 4+ the following molar decimal extinction coefficients were used: [82]  422 = 2.210 5 M -1 cm -1 ,  512 = 1.810 4 M -1 cm -1 and  584 = 5.410 3 M -1 cm -1 .…”

Diazotization of 5-(4`-Aminophenyl)-10,15,20-tris(4`-sulfophenyl)porphine in Water. Synthesis of Conjugate with H-Acid

“…[3][4][5][6][7][8][9][10][11] III. ) 2 c гидросульфат-анионами, которые активируют протонированный порфирин к электро-фильному замещению в пара-положения фенильных колец (супрамолекулярный контроль региоселективности [12] [13,14] выступающего в качестве мономера самосборки порфириновых нанотрубок (ПНТ). Движущей силой самосборки [H 4 P 2+ (PhNH 3…”