Recent Progress in the Chemistry and Physics of Poly (Diacetylenes)
Recent Progress in the Chemistry and Physics of Poly (Diacetylenes)
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聚二乙炔化学和物理最新进展
DOI：
10.1007/978-1-4684-3480-4_23
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发表时间：
1979
期刊：
影响因子：
--
通讯作者：
G. Wegner
中科院分区：
文献类型：
--
作者：
G. Wegner
为了研究大分子的固有固态特性及其在完美三维晶格中的相互作用而寻找聚合物的宏观单晶的历史与聚合物科学本身一样古老。不幸的是，高分子量链分子的固有特性似乎是在结晶条件下以高度复杂的形态结构形式聚集，其中部分链保持无定形并形成基质，其中嵌入相同分子的结晶链段的微观区域。一段时间以来，人们甚至认为完美的聚合物单晶根本不存在，主要是因为在聚合物结晶中观察到的链折叠现象非常普遍且与结构无关，以至于形成聚合物的长链晶体似乎是不可能的 (1)。在聚合物结晶领域进行的广泛研究对于首先通过一种或另一种聚合物化学方法（例如，聚合物化学方法）制备聚合物主链的成功尝试来说确实没有什么希望。 g。 TTF-TCNQ 类型的聚合物电荷转移复合物或多共轭分子或者甚至更复杂的分子，如 Little (2) 提出的分子，目的是随后将这些产品结晶成单晶状或至少是多晶材料。
The search for macroscopic single crystals of polymers with the aim to study the intrinsic solid-state properties of macromolecules and their interaction in a perfect three dimensional lattice is as old as polymer science itself. Unfortunately, it seems to be an intrinsic property of high molecular weight chain molecules to aggregate under conditions of crystallization in form of highly complex morphological structures in which parts of the chains remain amorphous and form a matrix in which microscopic domains of crystalline chain segments of the same molecules are embedded. For some time it was even believed that perfect polymer single crystals do not exist at all, mainly because the phenomenon of chain folding observed in polymer crystallization is so general and structure-independent that the formation of extended chain crystals of polymers seemed to be impossible (1). The extensive research undertaken in the area of polymer crystallization leaves indead little hope for successful attempts to prepare a polymer backbone first by one or the other methods of polymer chemistry e. g. polymer charge-transfer-complexes of the type TTF-TCNQ or polyconjugated molecules or even more complex molecules like the ones proposed by Little (2) with the aim to crystallize these products afterwards into single-crystal-like or at least polycrystalline materials.