协同合和高度定向的协同有机框架薄膜.
Dayanni D Bhagwandin1,2, Brian M Everhart1,3, Kirt A Page1,2,4
1Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, Ohio 45433, United States.
研究人员开发了一种方法来控制微电子的二维共价有机框架 (COF) 的特性. 用烯链接剂对COF薄膜进行共振注,改善了它们的电子特性,作为p型剂.
科学领域:
- 材料科学 材料科学 材料科学
- 有机化学 有机化学
- 固态物理 固态物理
背景情况:
- 2D共价有机框架 (COF) 对微电子有前途,但由于不可溶性,将其加工成薄膜具有挑战性.
- 控制晶体方向和带结构是高性能COF设备的关键.
研究的目的:
- 开发一种控制对 imine COF 薄膜的共价兴奋剂的策略.
- 研究烯连接器结合对COF结晶性和电子性质的影响.
主要方法:
- 液体-固体合成COF薄膜,使用不同比例的甲 (PDA) 和2,5-thiophenedicarboxaldehyde (TDA) 与1,3,5-tris(4-aminophenyl) (TAPB).
- 结晶学顺序的表征,带间隙,工作函数和价值带的最大值.
主要成果:
- 高晶度和均定向的TAPB-PDA-TDA COF薄膜成功合成了高达20%的TDA整合.
- 蒂奥芬兴奋剂最小地破坏了结晶学顺序,同时减少了带间隙并增加了工作功能.
- 协价兴奋剂增强了π-结合和电子移位,证明了p型半导体的行为.
结论:
- 可实现对2D COF薄膜与烯链接剂进行受控的共价化.
- 这种兴奋剂策略为先进的微电子应用提供了一条调整COF电子特性的途径.
- 在化COF中增强的结晶性和π-结合性改善了电荷传输特性.
更多相关视频
08:07Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
Published on: June 18, 2013
08:42Microfluidic-based Synthesis of Covalent Organic Frameworks COFs: A Tool for Continuous Production of COF Fibers and Direct Printing on a Surface
Published on: July 10, 2017
相关概念视频
Molecular Shape and Polarity
Network Covalent Solids
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
Intermolecular Forces
Noncovalent Attractions in Biomolecules
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Molecular Geometry and Dipole Moments
Noncovalent Attractions in Biomolecules
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
