Molecular and macromolecular chiral π-conjugated diketopyrrolopyrrole (DPP)–helicene derivatives were prepared and their chiroptical properties examined experimentally and theoretically. Exciton coupling leads to red and near-infrared circularly polarized absorption and luminescence arising from the achiral DPP units in the helical environment, highlighting an interesting synergy between the chiral helicene and the organic dye.

中文翻译：

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二酮吡咯并吡咯-ole烯衍生物的激子偶联会导致红色和近红外圆偏振发光†

制备了分子和大分子手性π-共轭二酮吡咯并吡咯（DPP）-hel烯衍生物，并通过实验和理论研究了它们的手性。激子耦合导致螺旋环境中非手性DPP单元产生红色和近红外圆偏振吸收和发光，从而突出了手性螺旋烯与有机染料之间有趣的协同作用。