Synthesis, characterization and electrical properties of novel steric phthalocyanine polymers

Abstract

Two novel steric polymeric phthalocyanines, with copper (CuPPc) and aluminum hybrid zinc (Al/ZnPPc) as the central atoms, were synthesized by the cyclic condensation of tetrahedral tetra-phthalonitriles. The IR and UV-VIS spectra of the synthesized polymers indicated a moderate degree of polymerization, somewhere between the monomeric phthalocyanine and planar covalent polymer. Good thermal stability and a high metallic content of CuPPc and Al/ZnPPc were verified by TGA and ICA-AAS methods. The metallic atoms were distributed uniformly and exhibited different binding features with -CN, -O, -N in the polymer, as indicated by EDS and XPS analysis. High electrical conductivity was observed before and after iodine doping compared to the normal polymeric phthalocyanine.

Synthesis of polymeric phthalocyanine sulfonate photosensitizer and its photodegradation on rhodamine B in aqueous medium

“…The absorption peak of H 2 PPcS x at 350 nm correlates with the -CN residue in the polymer. 14 For polymeric H 2 PPcS x , the fitness to Beer's Law indicates the low aggregative tendency of H 2 PPcS x . It only deviates from Beer's law weakly at high concentration (2 g/ L, in Figure 2(b)).…”

Synthesis and Characterisation of New Metallophthalocyanines Containing Four 12-Membered Diazadithia-Macrocyclic Moieties

“…A domestic oven (Arçelik MD 823, 350 W) was used for all the synthesis of metallo phthalocyanines. [1,4,7,10 dithiadiazacyclodode cine -12,13-dicarbonitrile (3): N,N′-(2,2′-(ethane-1,2diylbis(sulfanediyl))bis(ethane-2,1-diyl))bis(4-methylbenzenesulfonamide) (1) 28 (1.8g., 3.68 mmol) was dissolved in dry acetonitrile (60 mL), finely ground anhydrous K 2 CO 3 (1.53 g, 11.06 mmol) was added and the mixture stirred for 2h. at 50 °C.…”

“…The product was purified by column chromatography with silica gel [hexane/ethyl acetate (3:2)]. Finally a yellow solid product (3) General procedure for metallophthalocyanine derivates (4)(5)(6)(7)(8) A mixture of compound 3 (0.200 g, 0.327 mmol), anhydrous metal salts [Zn(CH 3 COOH) 2 (0.015 g, 0.08 mmol), CoCl 2 (0.0107 g, 0.08 mmol), NiCl 2 (0.0107 g, 0.08 mmol), CuCl 2 (0.0107 g, 0.08 mmol) or PbCl 2 (0.0107 g, 0.08 mmol)] and 2-(dimethylamino)ethanol (2 mL) was irradiated in a microwave oven at 175 °C, 350 W for 10 min. After cooling to room temperature the reaction mixture was washed with hot EtOH-MeOH and dried in vacuo.…”

“…1 Metal phthalocyanines and their peripherally substituted derivatives have technological and commercial applications as dyes and printing inks. In recent decades, there has been renewed interest in the use of phthalocyanine complexes in high technology fields including use in semiconductor devices, 2 photovoltaic and solar cells, 3,4 electrophotography, 5 rectifying devices, 6 molecular electronics, 7 Langmuir-Blodgett films, 8,9 electrochromism in display devices, 10 low dimensional metals, 11 gas sensors, 12,13 liquid crystals, 14 and nonlinear optics, 15,9 and as photosensitisers 16 and electro catalytic agents. 13,17 In photodynamic therapy (PDT), singlet oxygen is generated using photosensitiser and dioxygen via several energy transfer steps.…”

Synthesis and characterization of blue light emitting polymers based on arylene vinylene

“…Furthermore, blue light emitting polymers (LEPs) are very important for the development of cost-efficient white light emitting diodes for next-generation applications such as general light and backlight sources for LCDs. [6][7][8][9][10][11][12][13] Therefore, developing efficient, stable, blue LEPs is essential to realizing such applications.…”