Quaternized phthalocyanines

Xem 1-4 trên 4 kết quả Quaternized phthalocyanines

Synthesis and characterization of novel 2-{[2-(dimethylamino)ethyl](methyl)amino} ethoxy-substituted metallophthalocyanines

The synthesis of novel, symmetrical, tetrasubstituted metallophthalocyanines (cobalt, zinc, and copper) bearing four 2-{[2-(dimethylamino)ethyl](methyl)amino} ethoxy units was reported. The dinitrile derivative was converted into the water-soluble quaternized product by its reaction with methyl iodide. The quaternized zinc phthalocyanine was obtained from the reaction of the water-soluble dinitrile derivative with zinc acetate. The structures of the newly synthesized molecules were proposed according to elemental analysis, 1 H NMR, FT-IR, and UV-Vis spectral data.

8p langthannam 29-12-2021 5 0 Download

Investigation of the photophysical and photochemical behavior of substituted zinc phthalocyanines and their water-soluble quaternized derivatives

New nonperipherally and peripherally tetrasubstituted zinc(II) phthalocyanine complexes containing 1- benzylpiperidin-4-ol groups and their quaternized derivatives are reported in this work. These complexes were characterized successfully and their photophysical and photochemical properties were studied. These properties were determined in dimethylsulfoxide for all studied complexes and in water and water + Triton X-100 solutions for ionic Zn(II) phthalocyanines.

23p tudichquannguyet 29-11-2021 15 1 Download

Spectroscopic and thermodynamic approach to the interaction of nonperipherally substituted cationic phthalocyanines with calf thymus (CT)-DNA

Novel, nonperipherally tetrasubstituted cationic metal-free and metallophthalocyanines (Zn, In) were synthesized in the present study. The binding constants, the disappearance of quenching effect of all cationic phthalocyanines on the fluorescence intensity of SYBR Green–disodium salt of deoxyribonucleic acid (DNA) from calf thymus complex, and the changes in Tm of double helix DNA with thermal denaturation profile were investigated by UV-Vis and fluorescence spectrophotometric methods.

22p tudichquannguyet 29-11-2021 8 1 Download
Synthesis of quaternized zinc(II) and cobalt(II) phthalocyanines bearing pyridine-2-yl-ethynyl groups and their DNA binding properties

The synthesis and biological properties of tetra-substituted zinc and cobalt phthalocyanines bearing ethynylpyridine units on the periphery and their quaternized derivatives have been reported. The binding of quaternized ZnPc and CoPc (Q-ZnPc and Q-CoPc) with calf thymus DNA was investigated by UV-Vis spectrophotometric methods and thermodynamics. The mixtures of Q-ZnPc or Q-CoPc and DNA solutions were used to determine the change in the thermal melting temperature of DNA with the thermal denaturation profile.

14p tudichquannguyet 29-11-2021 11 1 Download