Investigation of calix [4] arene-porphyrin and its Palladium (II) and Zinc (II) complexes at air/water interface and in Langmuir-Blodgett film

摘要

Calix[4]aren-porphyrin and its Palladium(II) and Zinc (II) complexes are synthesized and studied at air/water interface and in Langmuir-Blodgett film. Their properties are measured by pressure-area isotherm, UV-Visble and Fourier transform infrared spectroscopy. Molecular geometry of the calix[4]arene-porphyrin compound is optimized at ab initio RHF/STO-3G level. UV- Visible spectra of the three compounds confirm that the π-π interaction of porphyrin moieties induces H-aggregation of the Calix [4]arene-porphyirin and its Palladium complex and J-aggregation if its Zinc complex in Langmuir-Blodgett film. The Ordering of alkyl chain for the three compounds is discussed based on infrared data, which is confirmed by their pressure-area Isotherms at aqueous subphase.