Department of Chemistry and Biochemistry, Auburn University, Auburn, AL 36849, USA.
Phys Chem Chem Phys. 2011 Oct 21;13(39):17712-21. doi: 10.1039/c1cp21701a. Epub 2011 Sep 9.
Monolayer quantities of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC), incorporated with either fullerenes or ruthenium tris(bipyridyl) (Ru(bpy)(3)(2+)) complexes, were formed on ferrocene-terminated C11-alkanethiol self-assembled monolayers (SAMs) through lipid fusion. Thus formed hybrid structures are characterized by quartz crystal microbalance, UV-vis spectroscopy, cyclic voltammetry and impedance analysis. In comparison to lipid monolayers deposited on C12-alkanethiol SAMs, photocurrent generation from these ferrocene-based structures is significantly modulated, displaying attenuated anodic photocurrents and enhanced cathodic photocurrents. While a similar trend was observed for the two photoagents studied, the degree of such modulations was always found to be greater in fullerene-incorporated bilayers. These findings are evaluated in the context of the film structure, energetics of the involved photo(electrochemical) species and cross-membrane electron-transfer processes.
单层的 1-棕榈酰基-2-油酰基-sn-甘油-3-磷酸胆碱（POPC），与富勒烯或钌三（联吡啶）（Ru（bpy）（3）（2+））复合物一起，通过脂质融合形成在二茂铁末端 C11-烷硫醇自组装单层（SAM）上。通过石英晶体微天平、紫外可见光谱、循环伏安法和阻抗分析对形成的混合结构进行了表征。与沉积在 C12-烷硫醇 SAM 上的脂质单层相比，这些基于二茂铁的结构的光电流生成显著调节，显示出衰减的阳极光电流和增强的阴极光电流。虽然研究的两种光试剂都观察到了类似的趋势，但在富勒烯掺入的双层中，这种调制的程度总是更大。这些发现是在膜结构、涉及的光（电化学）物种的能量和跨膜电子转移过程的背景下进行评估的。
