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Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
Published on: April 19, 2019
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持久碳与终结表面的反应
Aleksandr V Zhukhovitskiy, Michael G Mavros, K T Queeney1
1Department of Chemistry, Smith College , Northampton, Massachusetts 01063, United States.
Journal of the American Chemical Society
|July 2, 2016
概括
持久氨基碳通过插入Si-H键来功能化表面,从而创建稳定的C-Si链接. 循环 () 氨基) 碳 (CAAC) 显示出有效的反应性,用于在纳米粒子和晶片上安装氨基功能.
科学领域:
- 材料科学 材料科学 材料科学
- 表面化学 表面化学
- 纳米技术纳米技术
背景情况:
- 表面被动化对于太阳能电池和微电子非常重要.
- 新兴的应用需要从被动化转向表面功能化.
- 在表面附近安装功能是一个关键的挑战.
研究的目的:
- 报告使用持久性氨基碳来功能化终结表面的情况.
- 为了研究各种持久碳的Si-H插入反应.
- 为了证明稳定的C-Si连接的形成和表面氨基/氨基功能.
主要方法:
- 使用的模型化合物 (H-Si(TMS) 3,H-Si(OTMS) 3),纳米粒子 (H-SiNPs) 和平面Si(111) 晶圆.
- 使用循环 (基) 氨基) 碳化合物 (CAAC) 和非循环钻石碳化合物 (ADAC) 进行功能化.
- 使用原子力显微镜,传输电子显微镜,NMR,XPS和ToF-SIMS进行表征表面修饰.
主要成果:
- 电友性和核友性持久碳,特别是CAAC和ADAC,插入Si-H键.
- 形成持久的C-Si链接和安装表面附近的氨基/氨基功能.
- 在温和的条件下,CAAC 6实现了干净的插入,产生了21±3%覆盖Si的单层.
结论:
- 持久性氨基碳,特别是CAAC,通过Si-H插入有效地使表面功能化.
- 开发的方法可以创建稳定的C-Si键,并安装所需的表面功能.
- 结果表明,持久碳可以作为和其他非金属基质的通用配体.
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