在合物中依赖于粒子间相互作用的干扰:洞察快速蒸发诱导组合期间的玻璃过渡和形态调制的洞察
Swati Mehta1,2, Jitendra Bahadur1,2, Sandeep K Sharma3,2
1Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India. jbahadur@barc.gov.in.
Soft matter
|December 15, 2023
概括
粒子间相互作用控制蒸发诱导组装期间的合体阻塞,影响玻璃状态和结构形态. 与聚乙烯胺 (PEI) 调整这些相互作用会影响二氧化合体组合和超粒子稳定性.
科学领域:
- 合体和表面科学科学
- 材料科学 材料科学 材料科学
- 软物质物理学 软物质物理学
背景情况:
- 堵塞现象和玻璃过渡在原子和分子系统中至关重要.
- 了解粒子间相互作用是控制自组装过程中材料特性的关键.
研究的目的:
- 在蒸发诱导组装 (EIA) 期间调查合体干扰行为.
- 探索可调节的粒子间相互作用对干扰和自组装结构的影响.
- 分析聚乙烯胺 (PEI) 对体相互作用和超粒子形成的影响.
主要方法:
- 蒸发诱导的组装 (EIA) 的二氧化合物.
- 使用化聚乙烯胺 (PEI) 操纵粒子间相互作用.
- 定子消灭寿命光谱学 (PALS) 和宽带介电光谱学 (BDS).
主要成果:
- 观察到明显的干扰行为:由PEI调节的排斥性合体玻璃 (φ ∼ 0.70),有吸引力的合体玻璃 (φ ∼ 0.43),和重新进入的排斥性玻璃 (φ ∼ 0.61).
- 粒子间相互作用显著塑造了自我组装的形态,诱导了重新进入的过渡 (甜甜圈-球形-甜甜圈).
- PALS和BDS揭示了受干扰影响的微孔进化和封闭PEI的非单调动态.
结论:
- 在EIA过程中,粒子间相互作用对于控制合体干扰和超粒子形态至关重要.
- PEI调节的干扰行为显著影响自组装结构的稳定性.
- 该研究提供了通过受控的粒子间相互作用来设计稳定的合材料的见解.
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