Сrown- and Sulfophthalocyanines in Low-Molecular-Weight Hydrogels: Properties, Molecular State, and Release

Abstract

In continuation of our previous studies, we explored the solubilization of crown-and sulfophthalocyanines in the presence of bile salts (BS),Ключевые слова: Металлофталоцианины, краун-эфиры, биосовместимость, соли желчных кислот, солюбилизация, низкомолекулярные гидрогели, высвобождение, аминокислоты, спектры поглощения.

Supramolecular assemblies based on crown- and phosphoryl-substituted phthalocyanines and their metal complexes in microheterogeneous media

“…16, а). 66 The monomeric state of phthalocyaninate 1d on melting of the gel was confi rmed by fl uorescence measurements, namely, the fl uorescence in ten sity of thermally stimulated gel increased tenfold. 66 When dried in air, an SDC-containing supramolecular metallophthalocyanine-modifi ed gel undergoes transition to a xerogel.…”

“…66 The monomeric state of phthalocyaninate 1d on melting of the gel was confi rmed by fl uorescence measurements, namely, the fl uorescence in ten sity of thermally stimulated gel increased tenfold. 66 When dried in air, an SDC-containing supramolecular metallophthalocyanine-modifi ed gel undergoes transition to a xerogel. The shape of the spectral lines in the EAS of gels and xerogels corresponds to the presence of a certain number of molecules of compound 1d in the monomeric state; this is possible if the metallophthalocyanine molecule retains its local environment including SDC molecules or SDC-NaCl pairs upon drying.…”

“…Position of the Q-band maximum in the region characteristic of absorption of the monomeric state of the metallophthalocyanine is consistent with the fl uorescence microscopy data that confi rmed the presence of the mo- Gels and xerogels containing compound 1d were characterized by absorption and IR spectroscopies, X-ray diff raction, scanning electron microscopy (SEM), and fl uorescence microscopy. 66 According to SEM data, the aerogel 1d-SDC-Lys•HCl-NaCl-H 2 O represents a 3D network structure composed of entangled fi bers tens of micrometer long and to ten micrometer thick (Fig. 16, b).…”

“…17 compared to the spectrum of the micellar solution of 1d-SDC-NaCl. 66 In physiological conditions ([NaCl] = 0.137 mol L -1 , рН 7.4), a supramolecular gel containing SDC and the phosphoryl derivative of zinc phthalocyaninate 4 is formed. When dried at room temperature in air or in supercritical conditions, the gel is transformed to an aerogel that was characterized by the EAS and by fl uorescence microscopy images.…”

Tetrasubstituted (4-Chlorophenoxy)- And (2,4,5-Trichlorophenoxy)phthalocyanine Metal(ii) Complexes and Their Sulphonated Derivatives: Synthesis and Properties

“…In the FT-IR spectra of the obtained sulphonated phthalocyanine complexes (6)(7), the bands characteristic of phthalocyanine compounds, as well as of C-O-C and C-Hal bonds could be observed without important changes. In addition, bands appear in the regions 1210-1150 cm -1 and 1060-1030 cm -1 , characteristic of modes of sulfonic acid groups 19 appeared. It was also noted that FT-IR spectra of sulfonic acids are more diffuse compared to the initial ones, as was previously noted for phthalocyanines sulfonic acids.…”