Fig. 3: Bulk Spectroscopic analysis of molecules and polymers with same connectivity but different chirality.
From: Unravelling emergence of chirality in click-chemistry polymers down to the single-chain level
a ATR-FTIR spectra of monomer, repeating unit, polymers within CH3 region (3020-2800 cm−1) sensitive to central chirality. b C=O region (1780-1620 cm-1) sensitive to backbone chirality and supramolecular order normalised to their maximum at the S = O peak at 1230 cm-1. N = 8 independent experiments, n = 40 spectra with 512 co-averaging for monomers and repeating units; N = 9 independent experiments, n = 45 spectra with 512 co-averaging for polymers; error bars represent SE. c Left: Difference spectra for rac- minus χ-repeating units; error bars represent SE. Right: integrated peak areas at 2925 cm-1 and 2855 cm−1 (rac: green-blue, χ: orange, each data point represents the integration of the peak from a single spectrum), box plot has one SD as whiskers. d Left: Difference spectra for rac- minus χ-polymers; error bars represent SE. Right: integrated peak areas at 1723 cm−1 and 1656 cm−1 (rac: blue, χ: red; each data point represents the integration of the peak from a single spectrum), box plot has one SD as whiskers.
