研究目的
To synthesize and characterize symmetrically substituted metal(II)-octa-methoxyphenyl imino phthalocyanine pigments, including their spectral, magnetic, and thermal properties.
研究成果
The synthesis of octa-methoxyphenylimino phthalocyanine pigments was successful, with characterization confirming their structural integrity, purity, and crystalline nature. Magnetic studies showed paramagnetic behavior for Cu and Co derivatives with intermolecular cooperative effects, and thermal analysis indicated stability in the order Cu > Co > Ni > Zn in inert atmosphere.
研究不足
The study is limited to specific metal phthalocyanines (Cu, Co, Ni, Zn) and their derivatives; broader applicability to other metals or substituents is not explored. The magnetic susceptibility measurements were conducted only at room temperature, and the XRD patterns were used qualitatively for crystallinity assessment without detailed structural analysis.
1：Experimental Design and Method Selection:
The synthesis involved condensing octa amino phthalocyanines with o-anisaldehyde to form imino phthalocyanines, following a modified literature procedure. Characterization methods included electronic spectroscopy, IR spectroscopy, elemental analysis, magnetic susceptibility measurements, powder X-ray diffraction, and thermogravimetric analysis.
2：Sample Selection and Data Sources:
Samples were synthesized from 3,5-dinitrophthalic acid and metal salts (Cu, Co, Ni, Zn), with chemicals of analytical grade obtained from commercial suppliers.
3：List of Experimental Equipment and Materials:
Equipment included a magnetic susceptibility setup (3 supply unit and digital semi-microbalance), Shimadzu UV-Vis spectrophotometer, Nicolet MX-FTIR spectrometer, Philips analytical PW-1710 X-ray diffractrometer, and Shimadzu DTG/DTA-60 thermal analyzer. Materials included KBr pellets, sodium sulphide nonahydrate, sulfuric acid, ethyl alcohol, and o-anisaldehyde.
4：Experimental Procedures and Operational Workflow:
Synthesis involved preparing metal(II)-octa-nitro phthalocyanine, reducing it to amino derivative using sodium sulphide, and condensing with o-anisaldehyde in sulfuric acid and ethanol under reflux. Products were washed, dried, and characterized using the specified techniques.
5：Data Analysis Methods:
Data were analyzed using standard methods for spectral interpretation, Pascal's constants for diamagnetic corrections, and Boride's method for kinetic and thermodynamic parameters from TGA data.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
