Fig. S1.

(A) Guinier plots of R10 (red line), R8KR (blue line), K10 (green line), and K8RK (black line) from SAXS curves at the lowest measured $c_p$ at $c_s=0.300$ M. The $R_g$s obtained from the linear fit (black thin lines) are 0.82 $\pm$ 0.01 nm, 0.80 $\pm$ 0.01 nm, 0.75 $\pm$ 0.01 nm, and 0.73 $\pm$ 0.01 nm for R10, R8KR, K10, and K8RK, respectively. Calculated $M_{\text{r}}$s are 1,581 $\pm$ 2 Da, 1,353 $\pm$ 3 Da and 1,327 $\pm$ 4 Da, 1,250 $\pm$ 3 Da for R10, R8KR, K10, and K8RK, respectively. (B) Log–log plot of SAXS curves at the lowest measured $c_p$ at $c_s=0.300$ M.