Helicene Covalent Organic Frameworks for Robust Light Harvesting and Efficient Energy Transfers DOI

Cong Yin,

Xingyao Ye,

Shanshan Tao

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(45)

Published: July 18, 2024

Abstract Helicenes represent a class of fascinating π compounds with fused yet folded backbones. Despite their broad structural diversity, harnessing helicenes to develop well‐defined materials is still formidable challenge. Here we report the synthesis crystalline porous helicene by exploring synthesize covalent 2D lattices and layered frameworks. Topology‐directed polymerization [6]helicenes porphyrin creates networks alternate helicene‐porphyrin alignment along x y directions at 1.5‐nm interval develops [6]helicene frameworks through reversed anti‐AA stack z direction form segregated columnar arrays. Notably, this configuration enables be highly red luminescent benchmark quantum yields. The trigger effieicnt intra‐framework singlet‐to‐singlet state energy transfer from facilitate intermolecular triplet‐to‐triplet molecular oxygen produce reactive species, harvesting wide range photons ultraviolet near‐infrared regions for light emitting photo‐to‐chemical conversion. This study introduces new family extended frameworks, laying groundwork unprecedented structures functions.

Language: Английский

Modulating Quinoline-Linked Covalent Organic Frameworks via Fluorination for Boosting the Photocatalytic Air Reductive H2O2 Production DOI
Qinfeng Rong,

Xianlan Chen,

Qinyi Cheng

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(35), P. 13306 - 13315

Published: Aug. 20, 2024

The intrinsic reversibility and strong polarization of imine linkages limit the application imine-based covalent organic frameworks (COFs) in photocatalysis. Herein, inspired by aza-Diels–Alder cycloaddition reaction, two quinoline-linked fluorinated COFs (termed TTB-TTA-Ph-F TTB-TTA-Ph-3F) are developed based on postsynthetic modification an imine-linked COF (TTB-TTA). simultaneous reversibility-to-irreversibility bond transformation fluorination endow resultant with improved robustness, extended structural conjugation, intriguing optoelectronic properties. introduced fluorine groups change local electronic structures improve charge separation transfer. Benefiting from rational design skeleton, TTB-TTA-Ph-3F exhibits excellent activity, giving a 3496.9 μmol g–1 h–1 photocatalytic H2O2 production rate water air after optimizing modulation.

Language: Английский

Citations

5
Helicene Covalent Organic Frameworks for Robust Light Harvesting and Efficient Energy Transfers DOI

Cong Yin,

Xingyao Ye,

Shanshan Tao

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(45)

Published: July 18, 2024

Abstract Helicenes represent a class of fascinating π compounds with fused yet folded backbones. Despite their broad structural diversity, harnessing helicenes to develop well‐defined materials is still formidable challenge. Here we report the synthesis crystalline porous helicene by exploring synthesize covalent 2D lattices and layered frameworks. Topology‐directed polymerization [6]helicenes porphyrin creates networks alternate helicene‐porphyrin alignment along x y directions at 1.5‐nm interval develops [6]helicene frameworks through reversed anti‐AA stack z direction form segregated columnar arrays. Notably, this configuration enables be highly red luminescent benchmark quantum yields. The trigger effieicnt intra‐framework singlet‐to‐singlet state energy transfer from facilitate intermolecular triplet‐to‐triplet molecular oxygen produce reactive species, harvesting wide range photons ultraviolet near‐infrared regions for light emitting photo‐to‐chemical conversion. This study introduces new family extended frameworks, laying groundwork unprecedented structures functions.

Language: Английский

Citations

4
Challenges in photocatalysis using covalent organic frameworks DOI Creative Commons

Shu‐Yan Jiang,

Thomas P. Senftle, Rafael Verduzco

et al.

Journal of Physics Photonics, Journal Year: 2024, Volume and Issue: 6(3), P. 031001 - 031001

Published: June 12, 2024

Abstract Photocatalysis is an attractive, energy-efficient technology for organic transformations, polymer synthesis, and degradation of environmental pollutants. There a need new photocatalysts stable in different media that can be tailored specific applications. Covalent frameworks (COF) are crystalline, nanoporous materials with π -conjugated backbone monomers, representing versatile platforms as heterogeneous, metal-free photocatalysts. The structure to achieve desired photocatalytic properties, side-chains mediate adsorption, the provides large surface area molecular adsorption. While these properties make COFs attractive photocatalysts, several fundamental questions remain regarding mechanisms reactant transport into porous COF structures, both structural chemical stability various environments. In this perspective, we provide brief overview identify challenges should addressed future research seeking employ We close outlook perspective on directions

Language: Английский

Citations

0
Helicene Covalent Organic Frameworks for Robust Light Harvesting and Efficient Energy Transfers DOI

Cong Yin,

Xingyao Ye,

Shanshan Tao

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(45)

Published: July 18, 2024

Abstract Helicenes represent a class of fascinating π compounds with fused yet folded backbones. Despite their broad structural diversity, harnessing helicenes to develop well‐defined materials is still formidable challenge. Here we report the synthesis crystalline porous helicene by exploring synthesize covalent 2D lattices and layered frameworks. Topology‐directed polymerization [6]helicenes porphyrin creates networks alternate helicene‐porphyrin alignment along x y directions at 1.5‐nm interval develops [6]helicene frameworks through reversed anti‐AA stack z direction form segregated columnar arrays. Notably, this configuration enables be highly red luminescent benchmark quantum yields. The trigger effieicnt intra‐framework singlet‐to‐singlet state energy transfer from facilitate intermolecular triplet‐to‐triplet molecular oxygen produce reactive species, harvesting wide range photons ultraviolet near‐infrared regions for light emitting photo‐to‐chemical conversion. This study introduces new family extended frameworks, laying groundwork unprecedented structures functions.

Language: Английский

Citations

0