The steric inhibition of electron delocalization is drastically reduced as the limited conformational freedom of conjugated ladder-type polymers.

• 构型严重受限使得这种梯形共轭聚合物由于空间位阻或构型转变导致的电子离域现象完全得到了抑制。这带来了一系列光电热方面的独特性质。