2D共价有机框架的De Novo设计和简单合成:一个二合一的策略
Yusen Li1, Qing Chen2, Tiantian Xu1
1Department of Chemistry, Institute of Molecular Plus, and Tianjin Key Laboratory of Molecular Optoelectronic Science , Tianjin University , Tianjin 300072 , P. R. China.
Journal of the American Chemical Society
|August 14, 2019
概括
研究人员开发了一种新的二合一分子设计,用于合成基于二维胺的共价有机框架 (COF). 这一策略简化了COF的产生,并使矿太阳能电池的应用成为可能.
科学领域:
- 材料科学
- 有机化学
- 纳米技术
背景情况:
- 共价有机框架 (COF) 是具有多种应用的晶体多孔聚合物.
- 合成COF通常涉及复杂的多步骤和特定的反应条件.
- 开发易于适应的合成策略对于COF的广泛采用至关重要.
研究的目的:
- 引入一个简化的"二合一"分子设计策略,用于基于二维胺的COF合成.
- 展示开发的合成方法的多功能性和溶剂适应性.
- 探索合成的COF在电子设备应用中的潜力,特别是作为孔输送层.
主要方法:
- 设计和合成了一种基于二功能的pyrene分子,1,6-bis(4-formylphenyl)-3,8-bis(4-aminophenyl) pyrene (BFBAPy).
- 在各种有机溶剂中使用BFBAPy的自我凝结形成高度晶体的Py-COF.
- 在不同的基板上制造Py-COF薄膜用于设备测试.
主要成果:
- "二合一"策略成功地产生了高结晶性和多孔性的基于pyrene的COF (Py-COF).
- 这种合成表现出了显著的溶剂适应性,在二甲,和酸等多种溶剂中取得了成功.
- 在各种基板上成功制造了Py-COF薄膜,显示了矿太阳能电池中孔输送层的前景.
结论:
- 开发的"二合一"分子设计显著简化了基于二维胺的COF的合成.
- 该策略提供了卓越的溶剂适应性,这是COF合成中罕见的特征.
- 这种方法预计将广泛适用于合成其他COF,减少合成复杂性,并使新的应用成为可能.
相关概念视频
01:29Covalent Bonds
160.1K
Overview
160.1K
01:08Covalent Bonds
10.0K
Overview
When two atoms share electrons to complete their valence shells, they create a covalent bond. An atom's electronegativity—the force with which shared electrons are pulled towards an atom—determines how the electrons are shared. Molecules formed with covalent bonds can be either polar or nonpolar. Atoms with similar electronegativities form nonpolar covalent bonds; the electrons are shared equally. Atoms with different electronegativities share electrons unequally,...
When two atoms share electrons to complete their valence shells, they create a covalent bond. An atom's electronegativity—the force with which shared electrons are pulled towards an atom—determines how the electrons are shared. Molecules formed with covalent bonds can be either polar or nonpolar. Atoms with similar electronegativities form nonpolar covalent bonds; the electrons are shared equally. Atoms with different electronegativities share electrons unequally,...
10.0K
02:18Network Covalent Solids
16.1K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
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...
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...
16.1K
02:04Covalently Linked Protein Regulators
8.7K
Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
These groups modify specific amino acids in a protein....
8.7K
02:46Covalent Bonding and Lewis Structures
60.7K
Compared to ionic bonds, which results from the transfer of electrons between metallic and nonmetallic atoms, covalent bonds result from the mutual attraction of atoms for a “shared” pair of electrons.
60.7K
01:15Dehydration Synthesis
148.7K
Overview
Dehydration synthesis (also called a condensation reaction) is the chemical process in which two molecules covalently link together to form a new molecule, along with the release of a water molecule. Many physiologically important compounds form by dehydration synthesis reactions, such as complex carbohydrates, proteins, DNA, and RNA.
Synthesis of carbohydrates
Sugar molecules are covalently linked together by dehydration synthesis. During the reaction, the hydroxyl (-OH) group from...
Dehydration synthesis (also called a condensation reaction) is the chemical process in which two molecules covalently link together to form a new molecule, along with the release of a water molecule. Many physiologically important compounds form by dehydration synthesis reactions, such as complex carbohydrates, proteins, DNA, and RNA.
Synthesis of carbohydrates
Sugar molecules are covalently linked together by dehydration synthesis. During the reaction, the hydroxyl (-OH) group from...
148.7K