对于有机p-dopants的极度吸收电子的易斯配对的CN组
Eui Hyun Suh1, Sang Beom Kim1, Jaemin Jung1
1Department of Energy Engineering, Hanyang University, 04763, Seoul, Republic of Korea.
Angewandte Chemie (International ed. in English)
|June 4, 2023
概括
研究人员使用强大的易斯配对CN组开发了新的有机p-dopants. 这些剂增强有机半导体的稳定性和电子性质,在光电子领域提供了有前途的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 化学 化学 化学
背景情况:
- P型化学兴奋剂 (p-doping) 对于调整有机半导体特性至关重要.
- 现有的有机p-dopants通常缺乏足够的电子吸收强度,并遭受扩散诱导的不稳定性.
- 这限制了它们在电子设备中的性能和长期可靠性.
研究的目的:
- 设计和合成具有增强的电子吸收强度和改进的兴奋剂稳定性的新型有机p-dopants.
- 探索使用易斯配对的蓝 (CN) 组作为p-dopants的新构建块.
- 为了证明这些新兴剂在有机电子应用中的潜力.
主要方法:
- 在有机分子中利用极度吸收电子的易斯配对CN组.
- 配对易斯酸与溶液中的CN功能化结合分子.
- 描述新兴兴奋剂的取电子强度和兴奋剂稳定性.
主要成果:
- 路易斯配对的CN组表现出显著增强的电子吸收特性.
- 这种新型的p-dopants表现出极好的抗兴奋剂稳定性,抵御热量和大气暴露.
- 剂的大小有助于它们在宿主矩阵中的稳定性得到改善.
结论:
- 易斯配对的CN组代表了设计高性能有机p-dopants的有希望的新类构建块.
- 开发的p-dopants为有机半导体提供了卓越的稳定性和可调节的电子特性.
- 这种组合方法在 (光) 电子领域具有广泛的适用性和潜在影响.
相关概念视频
Diazonium Group Substitution: –OH and –H
2.8K
Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.
2.8K
ortho–para-Directing Activators: –CH3, –OH, –⁠NH2, –OCH3
6.1K
All ortho–para directors, excluding halogens, are activating groups. These groups donate electrons to the ring, making the ring carbons electron-rich. Consequently, the reactivity of the aromatic ring towards electrophilic substitution increases. For instance, the nitration of anisole is about 10,000 times faster than the nitration of benzene. The electron-donating effect of the methoxy group in anisole activates the ortho and para positions on the ring and stabilizes the corresponding...
6.1K
meta-Directing Deactivators: –NO2, –CN, –CHO, –⁠CO2R, –COR, –CO2H
5.6K
All meta-directing substituents are deactivating groups. These substituents withdraw electrons from the aromatic ring, making the ring less reactive toward electrophilic substitution. For example, the nitration of nitrobenzene is 100,000 times slower than that of benzene because of the deactivating effect of the nitro group. The first step in an electrophilic aromatic substitution is the addition of an electrophile to form a resonance-stabilized carbocation. The energy diagrams for...
5.6K
ortho–para-Directing Deactivators: Halogens
5.6K
Halogens are ortho–para directors. They are more electronegative than carbon. Therefore, as ring substituents, they can withdraw electrons through the inductive effect and deactivate the aromatic ring towards electrophilic substitution. Halogens also have an electron-donating resonance effect on the ring, which influences the orientation of the incoming electrophile. If an electrophile attacks at the ortho or the para position, the halogen donates electrons and stabilizes the intermediate...
5.6K
Aromatic Hydrocarbon Anions: Structural Overview
2.8K
Neutral hydrocarbons like cyclopentadiene with an odd number of carbon atoms and one intervening CH2 group in the ring are not aromatic. Cyclopentadiene with 4 π electrons does not satisfy the 4n + 2 π electron rule. Additionally, the intervening CH2 group is sp3 hybridized and lacks a vacant p orbital, thereby interrupting the overlap of p orbitals in a continuous manner and preventing the delocalization of π electrons throughout the ring.
Due to the absence of continuous...
Due to the absence of continuous...
2.8K
Carbocations
11.4K
Carbocations are one of the reaction intermediates formed during several nucleophilic substitutions or elimination reactions. A carbocation is an electron-deficient species with the central carbon atom having six electrons and three bonded atoms. The central carbon in a carbocation is sp2 hybridized with trigonal planar geometry. It has an empty p orbital perpendicular to the plane of the structure that can accept electrons. Thus, carbocations act as strong electrophiles and may react with any...
11.4K


