Single-Crystal-to-Single-Crystal (SCSC) Linear Polymerization of a Desymmetrized Anthraphane
作者:Marco Servalli、Nils Trapp、A. Dieter Schlüter
DOI:10.1002/chem.201802513
日期:2018.10.9
one of the rare cases of single‐crystal‐to‐single‐crystal (SCSC) linear polymerizations, resulting in a novel ladder‐type polymer. The polymerization is based on the photoinduced [4+4]‐cycloaddition reactions between trifunctional anthracene‐based monomers. The careful design of the monomer anthraphane‐tri(OMe), results in perfectly stacked anthracene pairs in the crystal structure, with Schmidt's
在这项工作中,我们介绍了单晶到单晶(SCSC)线性聚合的罕见情况之一,从而产生了一种新型的梯型聚合物。聚合基于三官能蒽基单体之间的光诱导[4 + 4]-环加成反应。精心设计的单体蒽三(OMe),可以使晶体结构中的蒽对完美堆叠,施密特距离d = 3.505–3.666Å,位移s = 1.109Å ,从而可以实现定量收率和选择性收率的选择性线性聚合。只需几分钟,而不会影响单晶的完整性。获得的聚蒽三(OMe)还揭示了一个非常有趣且前所未有的立体异构现象,这是聚蒽的特征。