Regulating the Helical Chirality of Racemic Polyacetylene by Chiral Polylactide for Realizing Full-Color and White Circularly Polarized Luminescence
Xinhui Gao, Jing Wang, Kai Yang, Biao Zhao, Jianping Deng
Abstract
Exploring the generation and transfer of chirality at different hierarchical levels has always been a significant research subject. The present contribution reports our success in inducing and regulating the helical chirality of achiral macromolecules (racemic polyacetylene) by using a chiral helical macromolecule (chiral polylactide); helical chirality is sufficiently transferred between two types of helical polymer chains. Hydrogen bonds are demonstrated to play a crucial role in the chirality transfer process. More interestingly, the induced helical chirality can be further transferred to additionally added achiral fluorophore molecules, thereby leading to the emission of full-color and white circularly polarized luminescence (CPL). The present study opens up an unprecedented two-step chirality transfer process to realize both the generation of helical chirality in achiral polymers and full-color CPL emissions in achiral fluorescence compounds.