作为中性基导体的共振稳定 bisdiselenazolyls
Jaclyn L Brusso1, Kristina Cvrkalj, Alicea A Leitch
1Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
Journal of the American Chemical Society
|November 23, 2006
概括
研究人员开发了一种新方法来合成基于的基因. 在这些分子中用取代硫会增加电导率,显示出先进电子材料的潜力.
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:
- 在材料科学中,共振稳定基是至关重要的.
- 了解根系中的结构属性关系是开发新材料的关键.
- 之前的研究集中在基于硫的系统上,使得类型的类似物未被充分探索.
研究的目的:
- 描述新型含基的高效合成途径.
- 为了研究这些基因的结构性质和固态行为.
- 为了评估结合对根基系统电导率的影响.
主要方法:
- 合成的bisselenathiazolyl和bisdiselenazolyl基的合成.
- 用于结构分析的X射线晶体学.
- 可变温度导电性测量. 变量温度导电性测量.
主要成果:
- 成功合成了共振稳定的比塞莱纳提亚和比斯迪塞莱纳基.
- 结构分析证实了足够的格子和pi-delocalization能量来防止固态二元化.
- 发现基于的基因与它们的硫对应物具有同结构.
- 电导率随着硫被替代而逐渐增加.
- 热激活能量随着含量增加而减少.
结论:
- 开发的合成途径对基于的基因激素是高效和多用途的.
- 的结合增强了电导率,并减少了这些根基系统的热激活能量.
- 这些发现表明有机电子和导电材料的潜在应用.
相关概念视频
Stability of Substituted Cyclohexanes
This lesson discusses the stability of substituted cyclohexanes with a focus on energies of various conformers and the effect of 1,3-diaxial interactions.
The two chair conformations of cyclohexanes undergo rapid interconversion at room temperature. Both forms have identical energies and stabilities, each comprising equal amounts of the equilibrium mixture. Replacing a hydrogen atom with a functional group makes the two conformations energetically non-equivalent.
For example, in...
The two chair conformations of cyclohexanes undergo rapid interconversion at room temperature. Both forms have identical energies and stabilities, each comprising equal amounts of the equilibrium mixture. Replacing a hydrogen atom with a functional group makes the two conformations energetically non-equivalent.
For example, in...
Diels–Alder Reaction: Characteristics of Dienes
The Diels–Alder reaction brings together a diene and a dienophile to form a six-membered ring. Both components have unique characteristics that influence the rate of the reaction.
Characteristics of the diene
Conformation
The simplest example of a diene is 1,3-butadiene, an acyclic conjugated π system. At room temperature, the molecule exists as a mixture of s-cis and s-trans conformers by virtue of rotation around the carbon–carbon single bond. Although the s-trans isomer is more stable, the...
Characteristics of the diene
Conformation
The simplest example of a diene is 1,3-butadiene, an acyclic conjugated π system. At room temperature, the molecule exists as a mixture of s-cis and s-trans conformers by virtue of rotation around the carbon–carbon single bond. Although the s-trans isomer is more stable, the...
Stability of Conjugated Dienes
Introduction
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.


