位阻效应
丝带
类型(生物学)
共轭体系
电子离域
离域电子
聚合物
材料科学
化学物理
结晶学
化学
纳米技术
立体化学
复合材料
有机化学
生物
生态学
摘要
Materials with a ribbon- or ladder-type framework possess a two-dimensional geometry and are thus intermediate between linear and three-dimensional systems. The limited conformational freedom of ladder polymers is particularly relevant in the case of conjugated ladder-type materials since the steric inhibition of electron delocalization is drastically reduced.
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