Fig. 1: Monomer and polymer chemical structures and UV–vis studies.

Chemical structure of (a) mono-(S)-1 and mono-(S)-2. b Chemical structure of poly-(S)-1 and poly-(S)-2. c Comparison of experimental and theoretical UV–vis spectra of mono-(S)-1 and mono-(S)-2 in DCM and DMF. [mono-(R)-1] = 0.3 mg/mL, [mono-(R)-2] = 0.3 mg/mL. (Abs, absorbance).