An amphiphilic benziminazole styryl dye, 2 (4 dihexadecylaminostyryl)benziminazolium TCNQ -(DBTCNQ), was synthesized and successfully transferred onto the substrates by Langmuir Blodgett(LB) technique. H aggregates we...An amphiphilic benziminazole styryl dye, 2 (4 dihexadecylaminostyryl)benziminazolium TCNQ -(DBTCNQ), was synthesized and successfully transferred onto the substrates by Langmuir Blodgett(LB) technique. H aggregates were formed on the substrates. Its monolayer second order susceptibility[ χ (2) zzz = 109 p/mV) was determined with a polarized laser beam(Nd∶YAG, λ =1.064 μm). The photoelectrochemistry of the dye LB monolayer films was investigated in a traditional three electrode cell. The quantum efficiency of photoelectric conversion is 1.08% under favorable conditions [-200 mV, 0.5 mg/mL methylviologen diiodide(MV 2+ ) in 0.5 mol/L KCl electrolyte solution]. The experimental data indicate that the LB film exhibits multifunctional properties.展开更多
The p tert butyl calixarene derivatives 1a with uracils and 1b with adenines at the lower rim were synthesized. The Interaction between 1a and 1b in CDCl 3 solution was demonstrated by 1H NMR spectra. The...The p tert butyl calixarene derivatives 1a with uracils and 1b with adenines at the lower rim were synthesized. The Interaction between 1a and 1b in CDCl 3 solution was demonstrated by 1H NMR spectra. The interfacial molecular recognitions of 1a and 1b for the complementary nucleosides in aqueous subphases were investigated by Langmuir Blodgett technique.展开更多
Surface plasmon resonance (SPR) was a sensitive method to study molecular interactions. Based on the specific binding, this paper presented the molecular assembly of protein nucleic acid multilayers on the surface of...Surface plasmon resonance (SPR) was a sensitive method to study molecular interactions. Based on the specific binding, this paper presented the molecular assembly of protein nucleic acid multilayers on the surface of a gold film. The first layer was a biotin lipid (B DMPE/DMPE) containing a monolayer prepared using the Langmuir Blodgett (LB) technique. The second and third layers were avidin and DNA labeled biotin, respectively. The fourth layer was anti DNA antibody extracted from the serum of patients with systemic lupus erythematosus (SLE). These interactions provide stability in the multilayer films of the complexes. The multilayer formation process was detected by SPR spectroscopy. The results show that the chip based sensor system can be used for functional characterization of protein protein and protein DNA interactions.展开更多
基金Supported by the National Natural Science Foundation of China(Nos.5 9872 0 0 12 0 0 2 30 0 5 ) and the State Key Projectfor Fundamental Research(No.G19980 6 130 8) .
文摘An amphiphilic benziminazole styryl dye, 2 (4 dihexadecylaminostyryl)benziminazolium TCNQ -(DBTCNQ), was synthesized and successfully transferred onto the substrates by Langmuir Blodgett(LB) technique. H aggregates were formed on the substrates. Its monolayer second order susceptibility[ χ (2) zzz = 109 p/mV) was determined with a polarized laser beam(Nd∶YAG, λ =1.064 μm). The photoelectrochemistry of the dye LB monolayer films was investigated in a traditional three electrode cell. The quantum efficiency of photoelectric conversion is 1.08% under favorable conditions [-200 mV, 0.5 mg/mL methylviologen diiodide(MV 2+ ) in 0.5 mol/L KCl electrolyte solution]. The experimental data indicate that the LB film exhibits multifunctional properties.
文摘The p tert butyl calixarene derivatives 1a with uracils and 1b with adenines at the lower rim were synthesized. The Interaction between 1a and 1b in CDCl 3 solution was demonstrated by 1H NMR spectra. The interfacial molecular recognitions of 1a and 1b for the complementary nucleosides in aqueous subphases were investigated by Langmuir Blodgett technique.
文摘Surface plasmon resonance (SPR) was a sensitive method to study molecular interactions. Based on the specific binding, this paper presented the molecular assembly of protein nucleic acid multilayers on the surface of a gold film. The first layer was a biotin lipid (B DMPE/DMPE) containing a monolayer prepared using the Langmuir Blodgett (LB) technique. The second and third layers were avidin and DNA labeled biotin, respectively. The fourth layer was anti DNA antibody extracted from the serum of patients with systemic lupus erythematosus (SLE). These interactions provide stability in the multilayer films of the complexes. The multilayer formation process was detected by SPR spectroscopy. The results show that the chip based sensor system can be used for functional characterization of protein protein and protein DNA interactions.
