在水溶液中等级性氨酸自我组装
Massimo De Napoli1, Sara Nardis, Roberto Paolesse
1Dipartimento di Scienze Chimiche, Università di Catania, Viale A, Doria 6, 95125 Catania, Italy.
Journal of the American Chemical Society
|May 13, 2004
概括
在水中,meso-tetrakis ((4-phosphonatophenyl) porphyrin会自我聚合. 部分质子化允许不同的途径,导致不同的化学性质和分子结构.
科学领域:
- 超分子化学 超分子化学
- 材料科学 材料科学 材料科学
背景情况:
- 在水性介质中表现出自我聚合的 meso-tetrakis ((4-phosphonatophenyl) porphyrin.
- 这种聚合遵循"中士-士兵规则",表明特定的定向增长机制.
研究的目的:
- 在水溶液中研究中四基{4-酸) 氨酸的自我聚合行为.
- 探索声群的部分质子化如何影响聚合途径和由此产生的特性.
主要方法:
- 在水溶液研究中,测量了四甲 ((4-phosphonatophenyl) porphyrin.
- 外部声群的受控部分质子化.
- 对聚合过程的监测和由此产生的物种的表征.
主要成果:
- 外部声群的部分质子化指导了自我聚合过程.
- 两种不同的途径出现: (i) 内原子的进一步质子化或 (ii) 时间依赖的聚合.
- 这些不同的途径产生了具有不同化学物理性质的物种.
结论:
- "中士-士兵规则"控制着氨酸的自我组装.
- 质子化状态关键控制氨酸聚合物的演变和特性.
- 定制质子提供了一种控制超分子结构和功能的方法.
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