Center for DNA Nanotechnology, Interdisciplinary Nanoscience Center, iNANO, Aarhus University, Gustav Wieds Vej 14, 8000, Aarhus C, Denmark.
Chem Commun (Camb). 2018 May 29;54(44):5534-5537. doi: 10.1039/c8cc00943k.
The morphology of conjugated polymers strongly influences their optical and electronic properties and affects their performance in polymer devices. Using optical spectroscopy and atomic force microscopy, we investigate the fluorescence properties and the aggregation state of DNA-functionalized poly(phenylene-vinylene). We show that polymer aggregation can be controlled in solution through ion and DNA interactions; aggregation is induced in the presence of divalent cations and can be reversed by adding sequence specific DNA. These interactions provide ways to tune polymer aggregation on the timescale of minutes and allows tuning of the polymer's optical properties.
共轭聚合物的形态强烈影响其光学和电子性质，并影响其在聚合物器件中的性能。我们使用光学光谱和原子力显微镜研究了 DNA 功能化聚（对苯撑乙烯）的荧光性质和聚集状态。我们表明，通过离子和 DNA 相互作用可以在溶液中控制聚合物的聚集；在存在二价阳离子的情况下诱导聚集，并且可以通过添加序列特异性 DNA 来逆转。这些相互作用提供了在几分钟的时间尺度上调节聚合物聚集的方法，并允许调节聚合物的光学性质。
