Huber Valerie, Lysetska Marina, Würthner Frank
Universität Würzburg Institut für Organische Chemie and Röntgen Research Center for Complex Material Systems, Am Hubland, 97074 Würzburg, Germany.
Small. 2007 Jun;3(6):1007-14. doi: 10.1002/smll.200600497.
The highly efficient, light-harvesting antennae systems present in chlorosomes of green phototrophic bacteria, such as Chloroflexus aurantiacus, serve as a model for the design of bioinspired nanostructured materials. A semisynthetic zinc chlorin, derived from natural chlorophyll a, is used as a building block that self-assembles into excitonically coupled chromophore stacks. Temperature-dependent UV/Vis and circular dichroism spectroscopic measurements show the reversible formation of soluble chiral aggregates of this new zinc chlorin dye. High-resolution scanning tunneling microscopy and atomic force microscopy studies reveal the formation of two types of well-ordered pi-stacked aggregates on highly ordered pyrolytic graphite.
高效的光捕获天线系统存在于绿色光合细菌的绿体中，如嗜热栖热菌，可作为设计受生物启发的纳米结构材料的模型。一种从天然叶绿素a衍生而来的半合成二氢卟吩锌用作构建模块，其可自组装成激子耦合发色团堆叠。温度依赖的紫外可见光谱和圆二色光谱测量表明，这种新型二氢卟吩锌染料可形成可逆的可溶性手性聚集体。高分辨率扫描隧道显微镜和原子力显微镜研究揭示，在高度有序的热解石墨上形成了两种类型的有序π堆积聚集体。
