Highly programmed self-assembly of supramolecular architectures with circularly polarized luminescence (CPL) has been a big challenge in developing chiroptic materials. We report here self-assembly of two chiral tubular supramolecular structures based on arrays of helices built from chiral bispyridyl biphenol-/spinol-phosphoric acid. Organic molecules integrated in the double or triple helical structures display obviously enhanced Cotton effects and CPL emissions. The polymers afford a two to three-fold increase of the luminescence dissymmetry factor |g_lum| in solutions, which reach as high as 3.5 × 10⁻³, due to the amplification effect of CPL arising from the strong intermolecular couping of organic monomers. In solution, the handedness of CPL is determined by the inherent chirality of organic monomers. In the solid state, the CPL signal of one polymer is kept and reversed, which follows the handedness of the helical assembly, whereas the signals of another disappeared owing to an aggregation-caused quenching effect. These two polymers are rare examples of CPL supramolecular materials having been crystallographically characterized. This study provides insights into a structural and molecular basis for designing ordered polymeric structures with advanced chiroptic properties.

中文翻译：

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具有放大的圆偏振发光的手性螺旋管状聚合物的超分子自组装

具有圆偏振发光（CPL）的超分子体系结构的高度程序化自组装一直是开发按摩疗法材料的一大挑战。我们在这里报告了两个手性管状超分子结构的自组装，该结构基于由手性双吡啶基双酚-/ spinol-磷酸构建的螺旋阵列。整合在双螺旋或三螺旋结构中的有机分子显示出明显增强的棉花效应和CPL排放。聚合物的发光不对称系数增加了2到3倍。摹_LUM | 在溶液中，高达3.5×10 ^-3，是由于有机单体的强分子间偶联产生的CPL的放大作用。在溶液中，CPL的手性取决于有机单体的固有手性。在固态下，一种聚合物的CPL信号被保持并反转，这遵循螺旋组件的惯性，而另一种聚合物的信号由于聚集引起的猝灭作用而消失。这两种聚合物是已经通过晶体学表征的CPL超分子材料的罕见实例。本研究为设计具有先进手性的有序聚合物结构提供了结构和分子基础的见识。