A molecular crowding thermo-switchable chiral G-quartet hydrogel with circularly polarized luminescence property.

Gao, Chenqi; Zhang, Zhiwei; Zhang, Xinying; Chen, Jingqi; Chen, Yingying; Zhao, Chuanqi; Zhao, Lijuan; Feng, Lingyan · Soft Matter · 2022

basic_science · Level V

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Abstract

A novel helix hydrogel with a G-quartet structure was synthesized from guanosine (Gua) and its derivative 5'-guanosine monophosphate (5'-GMP) under a molecular crowding environment. The chirality of the hydrogel is adjusted by controlling the gelling speed. The chiral hydrogel can induce an achiral dye Thioflavin T (ThT) to realize circularly polarized fluorescence (CPL). The CPL dissymmetry factor |<i>g</i><sub>lum</sub>| of the dye-hydrogels can reach 3 × 10<sup>-2</sup> and can be switched easily.

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