多阶段激活障碍物在基基基基基基高分子聚合过程中 (II) 复合物
Kayeong Go1, Tomoki Nishimura2, Sung Ho Jung1,3
1Department of Chemistry and Research Institution of Natural Sciences, Gyeongsang National University (GNU), Jinju, 52828, Republic of Korea.
动力屏障控制着高分子聚合物形成. 这项研究揭示了螺旋(II) 聚合物的多阶段激活障碍,详细介绍了聚合物转换和螺旋性反转.
科学领域:
- 超分子化学 超分子化学
- 协调化学 协调化学
- 聚合物科学 聚合物科学
背景情况:
- 动力障碍在超分子聚合过程中至关重要,影响结合速率和机制.
- 螺旋式金属超分子聚合涉及复杂的动态路径.
- 基于基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基
研究的目的:
- 为了研究基于基基基基基基复合物的螺旋金属超分子聚合中的多阶段激活障碍.
- 为了阐明动态路径的复杂性和总体转换.
- 确定动力学和热力学因素对聚合物形成的影响.
主要方法:
- 在DMSO/H2O混合物中使用基于奇拉性特皮里丁的基基 (alkynylplatinum) 复合体的动态实验.
- 应用芬克-瓦茨基 (F-W) 两步模型来确定速率常数 (k1和k2).
- 使用Eyring型图形方法计算聚合物形成的激活障碍.
主要成果:
- 确定了一种动力偏好聚合物 (Agg-I),该聚合物转化为更稳定的动力聚合物 (Agg-II),涉及螺旋性逆转.
- 通过金属对金属联体电荷转移 (MMLCT) 观察到动态聚合物的转化为热力学偏好的形式 (Agg-III).
- 确定Agg-III具有最高的激活屏障,可以通过添加Agg-III种子来调节.
结论:
- 螺旋式金属超分子聚合物通过不同的动力和热力学阶段进行.
- 激活障碍在决定聚合途径和最终的超分子结构方面发挥着重要作用.
- 了解这些动力障碍对于控制高分子聚合物组合至关重要.
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