Integration of Perylene Diimide into a Covalent Organic Framework for Photocatalytic Oxidation DOI
Xiaobo Shang, Zhenping Li,

Junqiang Jiao

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(46)

Published: July 31, 2024

Abstract Perylene diimides (PDIs) have garnered considerable attention due to their immense potential in photocatalysis. However, manipulating the molecular packing within aggregates and enhancing efficiency of photogenerated carrier recombination remain significant challenges. In this study, we demonstrate incorporation a PDI unit into covalent organic framework (COF), named PDI‐PDA, by linking an ortho‐substituted with p ‐phenylenediamine (PDA) control its intermolecular aggregation. The enables precise modulation electron‐transfer dynamics, leading ten‐fold increase photocatalytic oxidation thioether sulfoxide PDI‐PDA compared counterpart, yields exceeding 90 %. Electron property studies density functional theory calculations show that well‐defined crystal structure, enhances π–π stacking lowers electron transition barrier. Moreover, strong electron‐withdrawing ability promotes spatial separation valency band maximum conduction minimum suppressing rapid electron‐hole pairs improving charge‐separation give high efficiency. This study provides brief but effective way for commonly used PDI‐based dyes integrating them skeleton.

Language: Английский

Covalent Organic Frameworks Meet Titanium Oxide DOI
Rui Xue, Yinsheng Liu, Xueyan Wu

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: unknown

Published: July 19, 2024

In order to expand the applicability of materials and improve their performance, combined use different has increasingly been explored. Among these materials, inorganic–organic hybrid often exhibit properties superior those single materials. Covalent organic frameworks (COFs) are famous crystalline porous constructed by building blocks linked covalent bonds. recent years, combination COFs with other shown interesting in diverse fields, composite TiO2 have investigated more more. These two outstanding through bonding, physical mixing, methods excellent performance various including photocatalysis, electrocatalysis, sensors, separation, energy storage conversion. this Review, current preparation applications COF-TiO2 introduced detail, future development possible problems discussed prospected, which is great significance for related research. It believed that will show greater application value as research progresses.

Language: Английский

Citations

6
Integration of Perylene Diimide into a Covalent Organic Framework for Photocatalytic Oxidation DOI
Xiaobo Shang, Zhenping Li,

Junqiang Jiao

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(46)

Published: July 31, 2024

Abstract Perylene diimides (PDIs) have garnered considerable attention due to their immense potential in photocatalysis. However, manipulating the molecular packing within aggregates and enhancing efficiency of photogenerated carrier recombination remain significant challenges. In this study, we demonstrate incorporation a PDI unit into covalent organic framework (COF), named PDI‐PDA, by linking an ortho‐substituted with p ‐phenylenediamine (PDA) control its intermolecular aggregation. The enables precise modulation electron‐transfer dynamics, leading ten‐fold increase photocatalytic oxidation thioether sulfoxide PDI‐PDA compared counterpart, yields exceeding 90 %. Electron property studies density functional theory calculations show that well‐defined crystal structure, enhances π–π stacking lowers electron transition barrier. Moreover, strong electron‐withdrawing ability promotes spatial separation valency band maximum conduction minimum suppressing rapid electron‐hole pairs improving charge‐separation give high efficiency. This study provides brief but effective way for commonly used PDI‐based dyes integrating them skeleton.

Language: Английский

Citations

6
sp2 Carbon‐Conjugated Covalent Organic Frameworks (sp2c‐COFs): Synthesis and Application in Photocatalytic Water Splitting DOI Open Access

Shiqiong Peng,

Renjie Wang,

Yao Yang

et al.

Macromolecular Rapid Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 9, 2025

Abstract Preparation of irreversible sp 2 carbon‐conjugated covalent organic frameworks (sp c‐COFs) with specific porosity, easy structural functionalization, high chemical stability, and unique π‐electron conjugation structure (especially the combination π–π stacking interactions system), can remove barrier electron transfer provide a advantage for photocatalytic water splitting. Herein, based on three kinds reactions (Aldol condensation reaction, Knoevenagel Horner‐Wadsworth‐Emmons reaction) guided by precise modulation ligand topology, this review summarizes synthesis c‐COFs their applications in photoelectrocatalytic splitting (hydrogen evolution oxygen reactions). Furthermore, challenges possible research directions are also provided.

Language: Английский

Citations

0
Integration of Perylene Diimide into a Covalent Organic Framework for Photocatalytic Oxidation DOI
Xiaobo Shang, Zhenping Li,

Junqiang Jiao

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(46)

Published: July 31, 2024

Abstract Perylene diimides (PDIs) have garnered considerable attention due to their immense potential in photocatalysis. However, manipulating the molecular packing within aggregates and enhancing efficiency of photogenerated carrier recombination remain significant challenges. In this study, we demonstrate incorporation a PDI unit into covalent organic framework (COF), named PDI‐PDA, by linking an ortho‐substituted with p ‐phenylenediamine (PDA) control its intermolecular aggregation. The enables precise modulation electron‐transfer dynamics, leading ten‐fold increase photocatalytic oxidation thioether sulfoxide PDI‐PDA compared counterpart, yields exceeding 90 %. Electron property studies density functional theory calculations show that well‐defined crystal structure, enhances π–π stacking lowers electron transition barrier. Moreover, strong electron‐withdrawing ability promotes spatial separation valency band maximum conduction minimum suppressing rapid electron‐hole pairs improving charge‐separation give high efficiency. This study provides brief but effective way for commonly used PDI‐based dyes integrating them skeleton.

Language: Английский

Citations

0