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Updated: Sep 19, 2025

Electroactive Polymer Nanoparticles Exhibiting Photothermal Properties
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Electroactive Polymer Nanoparticles Exhibiting Photothermal Properties

Published on: January 8, 2016

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热交联的三胺-联聚合物:稳定高效电色材料的战略

Dongwen Zou1,2, Xiaopeng Zhang1,2, Hongyang Li1,2

  • 1GuangDong Engineering Technology Research Center of Multi-Dimensional Optoelectronic Materials, Shenzhen Graduate School, Peking University, Shenzhen, 518055, China.

ChemPlusChem
|June 4, 2025
PubMed
概括

热交联的trifenylamine-fluorene聚合物显示出增强的稳定性和可调色颜色,用于电色器件. 最高交联聚合物实现了优异的光学对比度,快速切换和耐用性.

关键词:
结合聚合物的聚合物.电染色的 电染色的热交叉连接 热交叉连接基于三烯胺的三烯胺

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相关概念视频

Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

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.
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Thermal Electrocyclic Reactions: Stereochemistry01:17

Thermal Electrocyclic Reactions: Stereochemistry

The stereochemistry of electrocyclic reactions is strongly influenced by the orbital symmetry of the polyene HOMO. Under thermal conditions, the reaction proceeds via the ground-state HOMO.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
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Photochemical Electrocyclic Reactions: Stereochemistry01:26

Photochemical Electrocyclic Reactions: Stereochemistry

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
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