Salvato in:
| Autori principali: | , , , , , , , , , |
|---|---|
| Natura: | Artículo Open Access |
| Pubblicazione: |
Wiley
2026
|
| Soggetti: | |
| Accesso online: | https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cssc.70699 |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1867021869272530944 |
|---|---|
| author | Wenjun Yang Yunrou Jiang Guiting Huang Weikang Peng Shibin Zheng Wei Lin Jialong Lv Min Pan Guocheng Huang Jinhong Bi |
| author_facet | Wenjun Yang Yunrou Jiang Guiting Huang Weikang Peng Shibin Zheng Wei Lin Jialong Lv Min Pan Guocheng Huang Jinhong Bi Wenjun Yang Yunrou Jiang Guiting Huang Weikang Peng Shibin Zheng Wei Lin Jialong Lv Min Pan Guocheng Huang Jinhong Bi |
| collection | Wiley Open Access |
| contents | Halogen‐Ion‐Mediated Dielectric Regulation in Ionic Covalent Organic Frameworks for Efficient Photocatalytic H 2 O 2 Production and Sterilization Wenjun Yang Yunrou Jiang Guiting Huang Weikang Peng Shibin Zheng Wei Lin Jialong Lv Min Pan Guocheng Huang Jinhong Bi ChemSusChem Covalent organic frameworks (COFs) have emerged as a platform for photocatalysis owing to their modular architectures and well‐defined porous frameworks. However, the low dielectric constants of organic frameworks lead to strong dielectric confinement and large exciton binding energies, which severely limit charge separation efficiency and photocatalytic performance. Herein, we report a viable strategy for modulating dielectric confinement via counteranion engineering. Halogen‐functionalized ionic COFs were fabricated by first synthesizing a highly conjugated EB‐COF:Br scaffold via Schiff base condensation between the ionic amino monomer ethidium bromide and the aldehyde linker 2,4,6‐triformylphloroglucinol, followed by ion exchange with F − , Cl ‐, and I − . We found that the strategy can modulate photocatalytic H 2 O 2 production and bactericidal performance, which is attributed to variations in permittivity and exciton binding energy resulting from the differential polarization of ionic moieties. Notably, EB‐COF:Cl exhibits enhanced exciton dissociation efficiency and a remarkably elevated H 2 O 2 production (1400 μmol·g −1 ·h −1 ) when using seawater as the reaction medium, which is 1.65 times that of the pure water system. This work establishes a feasible strategy for regulating the dielectric confinement effect of iCOFs to enhance H 2 O 2 production, with the improved performance in seawater systems endowing the material with promising practical applicability for marine‐related environmental remediation. 10.1002/cssc.70699 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| doi_str_mv | 10.1002/cssc.70699 |
| format | Artículo Open Access |
| id | wiley_oa_10_1002_cssc_70699 |
| institution | Wiley Open Access |
| license_str_mv | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| publishDate | 2026 |
| publisher | Wiley |
| record_format | wiley_oa |
| spellingShingle | Halogen‐Ion‐Mediated Dielectric Regulation in Ionic Covalent Organic Frameworks for Efficient Photocatalytic H 2 O 2 Production and Sterilization Wenjun Yang Yunrou Jiang Guiting Huang Weikang Peng Shibin Zheng Wei Lin Jialong Lv Min Pan Guocheng Huang Jinhong Bi ChemSusChem Halogen‐Ion‐Mediated Dielectric Regulation in Ionic Covalent Organic Frameworks for Efficient Photocatalytic H 2 O 2 Production and Sterilization Wenjun Yang Yunrou Jiang Guiting Huang Weikang Peng Shibin Zheng Wei Lin Jialong Lv Min Pan Guocheng Huang Jinhong Bi ChemSusChem Covalent organic frameworks (COFs) have emerged as a platform for photocatalysis owing to their modular architectures and well‐defined porous frameworks. However, the low dielectric constants of organic frameworks lead to strong dielectric confinement and large exciton binding energies, which severely limit charge separation efficiency and photocatalytic performance. Herein, we report a viable strategy for modulating dielectric confinement via counteranion engineering. Halogen‐functionalized ionic COFs were fabricated by first synthesizing a highly conjugated EB‐COF:Br scaffold via Schiff base condensation between the ionic amino monomer ethidium bromide and the aldehyde linker 2,4,6‐triformylphloroglucinol, followed by ion exchange with F − , Cl ‐, and I − . We found that the strategy can modulate photocatalytic H 2 O 2 production and bactericidal performance, which is attributed to variations in permittivity and exciton binding energy resulting from the differential polarization of ionic moieties. Notably, EB‐COF:Cl exhibits enhanced exciton dissociation efficiency and a remarkably elevated H 2 O 2 production (1400 μmol·g −1 ·h −1 ) when using seawater as the reaction medium, which is 1.65 times that of the pure water system. This work establishes a feasible strategy for regulating the dielectric confinement effect of iCOFs to enhance H 2 O 2 production, with the improved performance in seawater systems endowing the material with promising practical applicability for marine‐related environmental remediation. 10.1002/cssc.70699 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| title | Halogen‐Ion‐Mediated Dielectric Regulation in Ionic Covalent Organic Frameworks for Efficient Photocatalytic H 2 O 2 Production and Sterilization |
| topic | ChemSusChem |
| url | https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cssc.70699 |