Fig. 5: Chiral transfer and chiral catalysis of Fmoc-YK/SO₄²⁻ microrolls.

a Schematic diagram of the energy and chiral transfer in Fmoc-YK/SO₄²⁻ microrolls upon doping with Thioflavin T (ThT); (b) normalized fluorescence (FL) spectrum of Fmoc-Y^LK^L/SO₄²⁻ microrolls and UV absorption (abs) spectrum of 0.1 mg/mL ThT solution (the shaded area indicating the overlap between the microrolls’ emission peak and ThT’s absorption peak); (c) FRET in Fmoc-Y^LK^L/SO₄²⁻ microrolls after doping with varying concentrations of ThT solution; (d–f) the CD spectra, CPL spectra, and g_lum of Fmoc-Y^LK^L/SO₄²⁻ and Fmoc-Y^DK^D/SO₄²⁻ microrolls after doping with 0.1 mg/mL ThT; (g) schematic setup for enantioselective photopolymerization of 2,4-heneicosadiynoic acid (HA); (h) CD spectra of poly(diacetylene) (PDA) films after exposing to CPL generated from the Fmoc-YK/SO₄²⁻ microrolls. The inset shows the photographs of HA and PDA films.