According to the theory established by Carothers and Flory, stoichiometric control of monomers is necessary for efficient step-growth polymerization of AA-type and BB-type monomers in a single-phase solution. This review examines recent progress in synthesizing high-molecular-weight polymers via atypical nonstoichiometric step-growth polymerization (NSSP). The reactive intermediate mechanism (RIM) and intramolecular catalyst transfer (ICT) systems are essential for efficient NSSP, generating polymers with much higher molecular weights than theoretically predicted. NSSP systems provide many advantages in fine synthetic technologies for producing complex multifunctional polymers suitable for specific applications.

中文翻译：

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非化学计量阶步生长聚合的研究进展


根据 Carothers 和 Flory 建立的理论，单体的化学计量控制对于单相溶液中 AA 型和 BB 型单体的高效阶梯生长聚合是必要的。本文综述了通过非典型非化学计量阶步生长聚合 （NSSP） 合成高分子量聚合物的最新进展。反应性中间体机制 （RIM） 和分子内催化剂转移 （ICT） 系统对于高效的 NSSP 至关重要，可生成分子量远高于理论预测的聚合物。NSSP 系统在精细合成技术中具有许多优势，用于生产适用于特定应用的复杂多功能聚合物。