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首页> 外文期刊>Chemistry: A European journal >Supramolecule-regulated photophysics of oligo(p-phenyleneethynylene)based rod-coil block copolymers: Effect of molecular architecture
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Supramolecule-regulated photophysics of oligo(p-phenyleneethynylene)based rod-coil block copolymers: Effect of molecular architecture

机译：超分子调节的低聚对苯撑乙炔基嵌段共聚物的光物理性质：分子结构的影响

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摘要

Three new topology-varied rod-coil block copolymers, comprising the same oligo(p-phenyleneethynylene) (OPE) rod components and the same coil components, were synthesized by atom-transfer radical polymerization. Their photophysical properties were systematically studied and compared in consideration of their solid-state structures and self-assembly abilities. These copolymers have similar intrinsic photophysical properties to the OPE rods, as reflected in dilute solution. However, their photophysical properties in the solid state are manipulated to be dissimilar by supramolecular organization. Wide-angle X-ray diffraction (WAXD) and atomic force microscopy (AFM) data demonstrate that these copolymers possess different self-assembly abilities due to the molecular-architecture-dependent pi-pi interactions of the rods. Hence, the aggregates in the solid state are formed with a different mechanism for these copolymers, bringing about the discrepancy in the solid-state luminescent properties.
机译：通过原子转移自由基聚合反应合成了三种新的拓扑变化的杆-线圈嵌段共聚物，它们包含相同的低聚（对亚苯基亚乙炔基）（OPE）杆组分和相同的线圈组分。考虑到它们的固态结构和自组装能力，对它们的光物理性质进行了系统地研究和比较。如在稀溶液中所反映的，这些共聚物具有与OPE棒相似的固有光物理性质。然而，它们的固态光物理性质被超分子组织操纵为不相似。广角X射线衍射（WAXD）和原子力显微镜（AFM）数据表明，由于棒的分子结构依赖性pi-pi相互作用，这些共聚物具有不同的自组装能力。因此，对于这些共聚物，以不同的机理形成固态的聚集体，从而导致固态发光性能的差异。

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