コランヌリレンペンタペタレ
Dong Meng1,2, Guogang Liu2,3, Chengyi Xiao4
1Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry , Tsinghua University , Beijing 100084 , China.
Journal of the American Chemical Society
|March 9, 2019
まとめ
研究者は,ペリレンダイミド (PDI) の断片とコラヌレンのコアを使用して,新しい非平面グラフェノイド,コラヌリレンペンタペタレ (CRP) を合成した. D5対称構造は 独特のハネコブ格子を通して 電子輸送の可能性を示しています
科学分野:
- 材料科学
- 有機化学
- ナノテクノロジー
背景:
- 非平面グラフェノイドの合成には大きな進歩がある.
- 構造と性質の関係,特に分子間相互作用を理解する上で課題が残っています.
研究 の 目的:
- 新しい非平面グラフェノイド,コランヌリレンペンタペタレ (CRP) を提示します.
- CRPの構造的特徴と分子間相互作用を調査する.
- 電子機器におけるCRPの可能性を探求する.
主な方法:
- ペリレンダイミド (PDI) の平面断片とコランヌレンのカーブコアを含むボトムアップ合成.
- 構造の解明のための単一結晶X線 difraktion.
- トランジスタ装置の製造と試験
主要な成果:
- D5対称とC2対称という2つの異なるCRP構造が特定されました.
- D5対称のCRPは,独特で交互に積み重なっているキラルハネコブ格子を示しています.
- C2対称のCRPは,π-πの積み重ねによってダイマー単位を形成する.
- トランジスタ装置は,D5対称のCRPのハネコム格子が,π-πの積み重ねなしに電子輸送を容易にすることを示しました.
結論:
- コランヌリレンペンタペタレ (CRP) は,非平面グラフェノイドの新種である.
- D5対称のCRPのハネコム構造は,電子輸送アプリケーションに有望である.
- この研究は,複雑なグラフェノイドにおける構造-特性関係の理解を進める.
関連する概念動画
02:29Nomenclature of Alkenes
The IUPAC naming system for alkenes replaces -an- with -en- in the corresponding parent alkanes. Accordingly, a simple alkene replaces the -ane suffix of the alkane with -ene.
As per the IUPAC rules, the longest carbon chain containing the maximum number of double bonds is identified as the parent chain and is numbered such that the doubly bonded carbon atoms receive the lowest possible numbers. The location of the double bond is indicated by the number of its first carbon atom. In branched...
As per the IUPAC rules, the longest carbon chain containing the maximum number of double bonds is identified as the parent chain and is numbered such that the doubly bonded carbon atoms receive the lowest possible numbers. The location of the double bond is indicated by the number of its first carbon atom. In branched...
02:39Nomenclature of Alkynes
Alkynes are unsaturated hydrocarbons characterized by the presence of carbon-carbon triple bonds and have a general formula CnH2n-2. The nomenclature of alkynes follows a set of rules similar to alkanes and alkenes; however, alkynes bear the suffix "-yne" instead of "-ane" or "-ene." There are two approaches to naming alkynes:
01:16Structure of Conjugated Dienes
Introduction
Conjugated dienes are compounds characterized by the presence of alternating double and single bonds. In a conjugated system like 1,3-butadiene, the unhybridized 2p orbital on each carbon overlaps continuously, allowing the π electrons to be delocalized across the entire molecule. In contrast, this type of overlap does not occur in cumulated and isolated dienes, such as 2,3-pentadiene and 1,4-pentadiene, respectively. Instead, the π electrons remain localized between the double...
Conjugated dienes are compounds characterized by the presence of alternating double and single bonds. In a conjugated system like 1,3-butadiene, the unhybridized 2p orbital on each carbon overlaps continuously, allowing the π electrons to be delocalized across the entire molecule. In contrast, this type of overlap does not occur in cumulated and isolated dienes, such as 2,3-pentadiene and 1,4-pentadiene, respectively. Instead, the π electrons remain localized between the double...
01:18Aromatic Hydrocarbon Anions: Structural Overview
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 overlap of p...
Due to the absence of continuous overlap of p...
01:11Aryldiazonium Salts to Azo Dyes: Diazo Coupling
The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the para position.
01:24Characteristics and Nomenclature of Copolymers
Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...