Synthesis of Tetra(4-n-lauryloyloxyphenyl)porphyrin Complexes and Its Liquid Crystalline Characterization

Abstract

Abstract: Tetra-(4-n-lauryloxyphenyl)porphyrin and its complexes of Mn(Ⅲ), Fe(Ⅲ), Co(Ⅱ), Ni(Ⅱ), Cu(Ⅱ) and Zn(Ⅱ) have been synthesized. The compounds were determined and measured by elemental analysis, UV-Vis, FTIR photoacoustic spectrum, ¹HNMR and molar conductivity. The Fourier transform infrared photoacoustic of TLPPH₂ and its complexes in the range of 3 600-190cm^-1 were measured and investigated. The vibration coupling between the M-N stretching and the porphyrin ring deformation appears at 250.0cm^-1. The band at 320cm^-1 is due to M-Cl stretching vibration. Metal sensitive bands were found at～1352, ～1018, ～993, ～800 and 231cm^-1. The stability and the structure of the liquid crystalline phases are examined by optical microscopy and differential scanning calorimetry(DSC). Zn complex exhibits lower phase transition temperature at-50.67 ℃ and wide mesophase range at 143 ℃.

Key words: Tetra(4-n-lauryloxyphenyl)porphyrin, Complex, Porphyrin liquid crystal, Infrared photoacoustic spectra

CLC Number:

O614

TrendMD:

LIU Wei, SHI Yu-Hua, WANG Yin-Jie, SHI Tong-Shun, ZHANG Wan-Jin . Synthesis of Tetra(4-n-lauryloyloxyphenyl)porphyrin Complexes and Its Liquid Crystalline Characterization[J]. Chem. J. Chinese Universities, 2003, 24(2): 200.

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Synthesis of Tetra(4-n-lauryloyloxyphenyl)porphyrin Complexes and Its Liquid Crystalline Characterization

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