Modular face-to-face assembly of multichromophore arrays that absorb across the complete UV-visible spectrum and into the near-IR.
Modular face-to-face assembly of multichromophore arrays that absorb across the complete UV-visible spectrum and into the near-IR.
复制标题
多发色团阵列的模块化面对面组装，可吸收整个紫外-可见光谱并进入近红外区域。
作者：
Zhixin Zhao;A. Cammidge;D. Hughes;M. Cook
可以使用允许定向、逐步构建的模块化策略来制备酞菁和卟啉发色团的确定的面对面结构。 14 个类金属原子 Si 和 Ge 的中心基团之间的 μ-Oxo 连接确保了大环之间的 π 重叠，并且激子耦合效应进一步扩展了吸收曲线，以提供吸收整个紫外-可见光谱和近红外光谱的阵列。该策略具有足够的通用性，可以扩展到合成更明确的低聚物以及随后在堆叠的任一端或两端进行官能化或连接。
Defined face-to-face structures of phthalocyanine and porphyrin chromophores can be prepared using a modular strategy that allows directional, stepwise construction. μ-Oxo linkage between the central group of 14 metalloid atoms Si and Ge ensures π-overlap between the macrocycles, and exciton coupling effects further extend the absorption profile to provide arrays that absorb across the whole UV-visible spectrum and into the near-IR. The strategy is sufficiently versatile to be extended to synthesis of higher defined oligomers and subsequent functionalization or attachment at either or both ends of the stack.