The synthesis of phthalocyanines bearing one crown ether macrocycle and three alkoxyl chains is described. They form stable monolayers and can be employed for the preparation of multilayer films by the Langmuir-Bloget...The synthesis of phthalocyanines bearing one crown ether macrocycle and three alkoxyl chains is described. They form stable monolayers and can be employed for the preparation of multilayer films by the Langmuir-Blogett technique. The orientations of the molecules in the film were affected by alkali metal ions in the subphase. lt is suggested that a kind of 'sandwich' dimer was formed in the film induced by potassium ions展开更多
The mixed LB film of mono crown ether substituted phthalocyanine (CPc) and potassium picrate (PiK) were prepared by adding potassium picrate in subphase. The pi-A isotherms show that the addition of PiK in subphase in...The mixed LB film of mono crown ether substituted phthalocyanine (CPc) and potassium picrate (PiK) were prepared by adding potassium picrate in subphase. The pi-A isotherms show that the addition of PiK in subphase increases the orientation angles of phthalocyanine in monolayers. The absorption spectra revealed that the monolayer can be transferred to substrates easily. X-ray diffraction results show that the mixed film possesses the same thickness as that of pure phthalocyanine film.展开更多
A new type of bifat-chain amphiphilic moecules 1,10-bistearyl-4,6,13,15-tetraene-18-nitrogencrown-6 (NC), was synthesized and adopted as an spacer for an optically nonlinear hemicyanine derivative(DAEP) dye to form in...A new type of bifat-chain amphiphilic moecules 1,10-bistearyl-4,6,13,15-tetraene-18-nitrogencrown-6 (NC), was synthesized and adopted as an spacer for an optically nonlinear hemicyanine derivative(DAEP) dye to form interleaved Y-type LB multilayer films. The second harmonic (SH) intensity increased quadratically with the bilayer number due to improvement of the structural properties by insertion of the long hydrophibic chain of the DAEP between two fat-chains of NC.展开更多
文摘The synthesis of phthalocyanines bearing one crown ether macrocycle and three alkoxyl chains is described. They form stable monolayers and can be employed for the preparation of multilayer films by the Langmuir-Blogett technique. The orientations of the molecules in the film were affected by alkali metal ions in the subphase. lt is suggested that a kind of 'sandwich' dimer was formed in the film induced by potassium ions
文摘The mixed LB film of mono crown ether substituted phthalocyanine (CPc) and potassium picrate (PiK) were prepared by adding potassium picrate in subphase. The pi-A isotherms show that the addition of PiK in subphase increases the orientation angles of phthalocyanine in monolayers. The absorption spectra revealed that the monolayer can be transferred to substrates easily. X-ray diffraction results show that the mixed film possesses the same thickness as that of pure phthalocyanine film.
文摘A new type of bifat-chain amphiphilic moecules 1,10-bistearyl-4,6,13,15-tetraene-18-nitrogencrown-6 (NC), was synthesized and adopted as an spacer for an optically nonlinear hemicyanine derivative(DAEP) dye to form interleaved Y-type LB multilayer films. The second harmonic (SH) intensity increased quadratically with the bilayer number due to improvement of the structural properties by insertion of the long hydrophibic chain of the DAEP between two fat-chains of NC.
