Schill J, Ferrazzano L, Tolomelli A, Schenning A P H J, Brunsveld L
Laboratory of Chemical Biology, Department of Biomedical Engineering and Institute for Complex Molecular Systems Eindhoven University of Technology P. O. Box 513 5600MB Eindhoven The Netherlands
Department of Chemistry, University of Bologna Via Selmi 2 40126 Bologna Italy.
RSC Adv. 2020 Jan 2;10(1):444-450. doi: 10.1039/c9ra09015k. eCollection 2019 Dec 20.
Self-assembled π-conjugated nanoparticles with tunable optical characteristics are appealing for sensing and imaging applications due to their intrinsic fluorescence, supramolecular organization and dynamics. Here we report on the facile synthesis of fluorene benzothiadiazole co-oligomers in which structural backbone alterations induce bathochromically shifted optical characteristics. Moreover, the nature of the oligomer side-chains revealed the role of bulkiness and polarity on the optical and self-assembly behavior. Co-assemblies were prepared that showed energy transfer between the different oligomers which allows for tuning of the emission color. These compounds thus extend the π-conjugated-oligomer toolbox from which nanoparticles can be prepared with tailored physicochemical properties that may result in supramolecular materials for biosensing.
具有可调节光学特性的自组装π共轭纳米粒子因其固有的荧光、超分子组织和动力学特性，在传感和成像应用中颇具吸引力。在此，我们报道了芴苯并噻二唑共聚物的简便合成方法，其中结构主链的改变会导致光学特性发生红移。此外，低聚物侧链的性质揭示了体积和极性对光学及自组装行为的作用。制备的共组装体显示出不同低聚物之间的能量转移，这使得发射颜色得以调节。这些化合物因此扩展了π共轭低聚物工具箱，从中可以制备出具有定制物理化学性质的纳米粒子，这可能会产生用于生物传感的超分子材料。
