Cadros orgánicos covalentes fotoeléctricos: conversión de redes abiertas en heterojunciones ordenadas

Long Chen1, Ko Furukawa, Jia Gao

  • 1College of Materials Science and Engineering, Beijing Institute of Technology , 5 South Zhongguancun Street, Haidian District, Beijing 100081, China.

Resumen

Los investigadores desarrollaron un nuevo método para crear marcos orgánicos covalentes (COF) avanzados con heterojunciones ordenadas de donante-aceptor para una eficiente conversión de energía solar. Esta estrategia utiliza tanto el marco como los poros de los COF para aplicaciones mejoradas de fotoenergía.

Videos de Conceptos Relacionados

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
1.4K
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.
2.1K