The effect of polarization time on the schiff base self assembled monolayer containing hydrosulfo group has been investigated by CV and ac impedance measurements. The results showed that, when the potential of -0 87 V...The effect of polarization time on the schiff base self assembled monolayer containing hydrosulfo group has been investigated by CV and ac impedance measurements. The results showed that, when the potential of -0 87 V( vs .SCE) was applied on the monolayer, the electrochemical charge transfer resistance R ct originated from the reduction of CN increased with the polarization time within 4 min and then decreased. This phenomenon may be related to the relationship between the CN group and the structure of the Schiff base self assembled monolayer.展开更多
Aggregate structure, phase transition and their relationship to the preparation conditions of single chain Schiff base containing ammonium amphiphiles with different alkyl chains in aqueous vesicle bilayer were studie...Aggregate structure, phase transition and their relationship to the preparation conditions of single chain Schiff base containing ammonium amphiphiles with different alkyl chains in aqueous vesicle bilayer were studied with differential scanning calorimetry, X-ray diffraction and electronic absorption spectrum. The experimental results showed that the bilayer structure existed in aqueous solution was affected by the length of tall alkyl chain. The amphiphile with a dodecyloxy tail could form both paralell and interdigitated structures. By controlling the preparation condition one of these two stacking form could be obtained as the main structure.展开更多
文摘The effect of polarization time on the schiff base self assembled monolayer containing hydrosulfo group has been investigated by CV and ac impedance measurements. The results showed that, when the potential of -0 87 V( vs .SCE) was applied on the monolayer, the electrochemical charge transfer resistance R ct originated from the reduction of CN increased with the polarization time within 4 min and then decreased. This phenomenon may be related to the relationship between the CN group and the structure of the Schiff base self assembled monolayer.
文摘Aggregate structure, phase transition and their relationship to the preparation conditions of single chain Schiff base containing ammonium amphiphiles with different alkyl chains in aqueous vesicle bilayer were studied with differential scanning calorimetry, X-ray diffraction and electronic absorption spectrum. The experimental results showed that the bilayer structure existed in aqueous solution was affected by the length of tall alkyl chain. The amphiphile with a dodecyloxy tail could form both paralell and interdigitated structures. By controlling the preparation condition one of these two stacking form could be obtained as the main structure.
