Construction of DNA-templated one-dimensional assembly from acene molecules and the investigation of their opt-electronic properties

我们报道了在水缓冲液中由胸腺酸附加的蒽基TACT的单组分自组装和TACT与互补的20-二甲基低聚腺苷酸（TACT/dA20）的二元自组装形成的一维蒽堆的光学性质。TACT的时间分辨荧光光谱表明，TACT单组分组装中的蒽基团是柔性的。而模板dna分子将蒽部分置于一维组装的中心，使它们保持在允许Förster共振能量转移的距离，并将它们与溶剂水分子分离，溶剂水分子攻击荧光分子并引起非辐射过程。因此，由dna模板化的TACT自组装形成的柱状蒽堆可以作为水溶液中的能量传递途径。

We report optical properties of one-dimensional anthracene stacks formed from single-component self-assembly of thymidylic acid-appended anthracene TACT and the binary self-assembly of TACT and complementary 20-meric oligoadenylic acid (TACT/dA20) in an aqueous buffer. Time-resolved fluorescence spectra for TACT suggested that the anthracene moieties in single-component assembly from TACT were flexible. Whereas the template-DNA molecule position the anthracene moieties at the center of a one-dimensional assembly, keep them at distances that permit Förster resonance energy transfer, and separate them from the solvent water molecules, which attack fluorescent molecules and cause non-radiative processes. As a result, the columnar anthracene stacks formed from the DNA-templated self-assembly of TACT can act as an energy transfer pathway in aqueous solution.