Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Types of Semiconductors01:20

Types of Semiconductors

935
Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...
935
Characteristics and Nomenclature of Copolymers01:24

Characteristics and Nomenclature of Copolymers

2.7K
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...
2.7K
Photochemical Electrocyclic Reactions: Stereochemistry01:26

Photochemical Electrocyclic Reactions: Stereochemistry

1.9K
The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
1.9K
Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

2.5K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.5K
Cationic Chain-Growth Polymerization: Mechanism00:57

Cationic Chain-Growth Polymerization: Mechanism

2.4K
The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the...
2.4K
Step-Growth Polymerization: Overview01:03

Step-Growth Polymerization: Overview

3.6K
Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
Many natural and synthetic polymers are produced by...
3.6K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Recent advances in Li<sub>2</sub>S@C nanocomposites for lithium-sulfur batteries.

Chemical science·2026
Same author

Exceptional stability of a Gd-free extracellular fluid MRI contrast agent based on manganese porphyrin.

Journal of inorganic biochemistry·2025
Same author

An Intrinsically Conductive Cross-Conjugated Polymer with a Quinhydrone-Like Donor-Acceptor Charge-Transfer Network.

Angewandte Chemie (International ed. in English)·2025
Same author

Molecularly Imprinted Semiconducting Polymers for Size- and Interaction-Selective Gas Sensors Based on Organic Thin-Film Transistors.

ACS applied materials & interfaces·2025
Same author

Zinc complex-based multifunctional binders for lithium sulfide-based lithium-sulfur batteries.

Nanoscale·2025
Same author

Advancements in Glass Fiber Separator Technology for Lithium-Sulfur Batteries: The Role of Transport, Material Properties, and Modifications.

ACS omega·2025

相关实验视频

Updated: Sep 17, 2025

Monitoring the Effects of Illumination on the Structure of Conjugated Polymer Gels Using Neutron Scattering
06:16

Monitoring the Effects of Illumination on the Structure of Conjugated Polymer Gels Using Neutron Scattering

Published on: December 21, 2017

5.8K

交叉合聚合物半导体的半导体

Naixin Zhao1, Sung Jae Jeon1, Yuning Li1

  • 1Department of Chemical Engineering and Waterloo Institute for Nanotechnology (WIN) University of Waterloo, 200 University Ave West, Waterloo, Ontario, N2L 3G1, Canada.

Macromolecular rapid communications
|July 3, 2025
PubMed
概括

交叉合的聚合物提供独特的电子性质,由于分支电子移位. 这些材料在各种光电子设备中显示出潜力,具有针对先进应用的可调性特性.

科学领域:

  • 材料科学 材料科学 材料科学
  • 聚合物化学 聚合物化学
  • 有机电子 有机电子

背景情况:

  • 交叉合聚合物具有独特的分支的π电子移位,与线性合聚合物不同.
  • 这种独特的结构导致了不同的光学,电子和氧化还原特性.
  • 这些特性在传统的合聚合物框架中是无法实现的.

研究的目的:

  • 提供对交叉合聚合物系统的全面审查.
  • 强调结构-属性关系及其对光电子性能的影响.
  • 为了突出这些材料的设计和应用的最新进展.

主要方法:

  • 对交叉合聚合物的现有文献的审查.
  • 结构与财产关系的分析.
  • 在各种有机电子设备中应用的案例研究.

主要成果:

  • 交叉结合的聚合物表现出独特的光电子和氧化还原行为.
  • 在有机场效应晶体管 (OFETs),有机发光二极管 (OLEDs),传感器,电色装置,太阳能电池和能量存储中展示了应用.
  • 虽然通常具有较低的电荷载体移动性,但结构转型可以提高移动性.
关键词:
结合式切换 交换 结合式切换交叉合聚合物 交叉合聚合物交叉结合的交叉结合是什么线性结合是线性的结合.有机电子产品 有机电子产品结构财产关系的结构.

更多相关视频

Morphology Control for Fully Printable Organic&#8211;Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
08:29

Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer

Published on: January 10, 2017

9.2K
Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
08:07

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates

Published on: June 18, 2013

15.2K

相关实验视频

Last Updated: Sep 17, 2025

Monitoring the Effects of Illumination on the Structure of Conjugated Polymer Gels Using Neutron Scattering
06:16

Monitoring the Effects of Illumination on the Structure of Conjugated Polymer Gels Using Neutron Scattering

Published on: December 21, 2017

5.8K
Morphology Control for Fully Printable Organic&#8211;Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
08:29

Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer

Published on: January 10, 2017

9.2K
Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
08:07

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates

Published on: June 18, 2013

15.2K

结论:

  • 交叉合聚合物为需要多功能性和响应性的新兴应用提供了显著的潜力.
  • 可调节的氧化还原行为是这些材料的关键优势.
  • 通过战略设计和应用,进一步的研究可以解锁高级功能.