Liquid-crystalline phthalocyanine-based nanostructures

Abstract

Structural peculiarities of mesogenic phthalocyanines and their derivatives are considered. Liq uid crystalline materials based on self assembled phthalocyanine molecules are promising novel functional materials for sensors, as catalysts, optically and bioactive matrices, and semiconductor cells. Mesomorphic and electrophysical characteristics of liquid crystalline phthalocyanine based materials are considered, pos sibilities of their use are discussed, and the structure-property relations are analyzed.

The synthesis and characterization of nonperipherally tetra terminal alkynyl substituted phthalocyanines and glycoconjugation via the click reaction

“…For this purpose, 1,2,3,4,6-penta-O-acetyl-β-D-glucopyranose (7) was transformed to 2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl azide (9) as a white solid in a 75% yield after bromination with hydrogen bromide in acetic acid and then reaction with NaN 3 in THF-water. The successful click reaction between glucopyranosyl azide (9) and the nonperipherally tetra terminal alkynyl substituted ZnPc (6) in the presence of sodium ascorbate and copper sulfate resulted glycopyranosyl conjugated ZnPc (10) in a satisfactory yield. Consequently, the target compound, nonperipherally glucose conjugated ZnPc (11), was obtained by deprotection under Zémplen conditions in an 87% yield (Scheme 2).…”

“…Since the accidentally discovery of the phthalocyanines (Pcs), many efforts have been devoted to the tailoring of their properties to produce molecular materials and technological devices. Recently they have found use as sensors, 1,2 non-linear optics, 3,4 dye sensitized solar cells, 5,6 organic light emitting devices, 7 molecular electronics, 8,9 liquid crystals, 10,11 semiconductors, 12 catalysts 13,14 and photodynamic reagents for cancer therapy (PDT), 15,16 among others. The properties of phthalocyanines are closely depended on their structure that can be modified by metallation or substitution variations: number, position, and nature.…”

Relaxation phenomena in latex polymer materials modified by ionic phthalocyanine

“…Owing to the physico chemical properties of phth alocyanines, such compositions can find application in optoelectronic industry (luminescent and photo sensitive systems corresponding to telecommunica tion wavelengths of fiberoptic communication lines) for development of new functionalized surface layers and films, ordered polymer nanocomposites based on nanostructured metal-oxide templates, etc. [5][6][7][8][9][10][11].…”

“…Earlier, we established the possibility of modifica tion of latex polymers based on emulsifier free film forming styrene alkyl(meth)acrylate latexes by water soluble 2,3,9,10,16,17,23,24 octa[(3,5 biscarboxy) phenoxy]phthalocyanine С 88 Н 42 N 8 Na 8 O 24 (WSP) owing to their full compatibility, as well as the stability of the latter in the presence of WSPs [12][13][14], which is a prerequisite for development of new composite materials with a set of practically important proper ties, particularly photochemical ones [5][6][7][8][9][10][11].…”

Supramolecular associates of double-decker lanthanide phthalocyanines with macromolecular structures and nanoparticles as the basis of biosensor devices

“…It is known that a particular feature of coordination chem istry of rare-earth elements (REEs) is the possibility of formation of sandwich complexes alongside monophthalocyaninates. Due to the presence of several macrocyclic rings capable of multiple reversible redox transitions, such compounds are promising as compo nents of multichromic displays, sensors (including bio sensors), and conducting materials [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18].…”