Table S3.

$V_{\text{tr}},$ $V_{\text{tr}}^{\left(\text{be}\right)},$ and $V_{\text{tr}}^{\left(\text{dae}\right)}$ for the polynorbornyl bridged model compounds with n = 1, 2 (see Fig. 2C for the molecular structures)

Number of bridge units	$V_{\text{tr}},$ eV	$V_{\text{tr}}^{\left(\text{be}\right)},$ eV	$V_{\text{tr}}^{\left(\text{dae}\right)},$ eV
n = 1	$4.00\times {10}^{-2}$	$9.86\times {10}^{-3}$	$2.91\times {10}^{-2}$
n = 2	$2.42\times {10}^{-3}$	$8.65\times {10}^{-4}$	$1.48\times {10}^{-3}$

The edge D, A C=C bonds are parallel.