纳米特征学揭示了大量无形元素是由一个类似梯子的聚合物组成的,其结构单元是B4
Song Zhang1, Zhe Li1, Yu Bao1
1School of Chemistry, Key Laboratory of Advanced Technologies of Materials (Ministry of Education), Southwest Jiaotong University, Chengdu 610031, People's Republic of China.
ACS nano
|May 30, 2023
概括
无形元素 (AE-B) 是一个已经研究了200多年的材料,它的结构终于被揭示了. AE-B是一种由B4单元组成的梯子状聚合物,为材料研究和应用开辟了新的途径.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 纳米技术纳米技术
背景情况:
- 无形元素 (AE-B) 是第一个被发现的异质,已知超过两个世纪.
- 尽管进行了广泛的研究,但由于其非晶体性质,其确切的原子结构仍然未确定.
研究的目的:
- 确定无形元素 (AE-B) 的分子结构.
- 研究AE-B作为聚合物材料的潜力.
主要方法:
- 从有机溶剂中吸附AE-B的表面吸附.
- 使用原子力显微镜 (AFM) 进行单分子分析.
- 使用高分辨率传输电子显微镜 (HRTEM) 进行纳米特征.
- 量子力学的计算.
主要成果:
- AFM发现AE-B是一种单层,链状分子,厚度为0.17 ± 0.01 nm.
- HRTEM显示了具有平行线 (0.27 nm宽度,0.32 ± 0.01 nm周期性) 的自组装AE-B纳米片.
- AE-B被确定为一种类似梯子的无机聚合物,具有B4结构单元,通过弹性测量和计算得到证实.
结论:
- 解决了AE-B结构的两个世纪的奥秘.
- AE-B是一种具有未来研究和应用潜力的聚合物材料.
- 采用的研究策略可以应用于研究其他无形无机材料.
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