2018
DOI: 10.1021/jacs.7b11255
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Diacetylene Functionalized Covalent Organic Framework (COF) for Photocatalytic Hydrogen Generation

Abstract: Covalent organic frameworks (COFs) are crystalline, highly porous, two- or three-dimensional polymers with tunable topology and functionalities. Because of their higher chemical stabilities in comparison to their boron-linked counterparts, imine or β-ketoenamine linked COFs have been utilized for a broad range of applications, including gas storage, heterogeneous catalysis, energy storage devices, or proton-conductive membranes. Herein, we report the synthesis of highly porous and chemically stable acetylene (… Show more

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Cited by 765 publications
(525 citation statements)
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“…[47] Due to the unique structure of the amine unit used, in which a hydroxyl group is placed at the ortho position of an amine group, the extended COF formations experienced a cascade reaction involving reversible imine bond formation followed by irreversible oxazole ring formation. [44] Copyright 2018, American Chemical Society. This not only enables self-healing to yield high quality crystals but also reinforces the bond in the final material together with increasing light absorption.…”
Section: Catalysismentioning
confidence: 99%
“…[47] Due to the unique structure of the amine unit used, in which a hydroxyl group is placed at the ortho position of an amine group, the extended COF formations experienced a cascade reaction involving reversible imine bond formation followed by irreversible oxazole ring formation. [44] Copyright 2018, American Chemical Society. This not only enables self-healing to yield high quality crystals but also reinforces the bond in the final material together with increasing light absorption.…”
Section: Catalysismentioning
confidence: 99%
“…[1, 2] Conjugated polymers (CPs), including carbon nitride, [3] COFs, [4] CTFs, [5] CMPs, [6] and linear polymers, [7] have recently emerged as anew family of semiconductor photocatalysts,o wing to their advantages, such as tunable structure and properties,e ase of fabrication, environmental friendliness,a nd absence of noble metals.T o date,c onsiderable advances have been achieved by rational design of the structure and by tailoring of the properties of the CPs. Herein, aseries of linear donor-acceptor conjugated polymers has been developed to minimizethe exciton binding energy by modulating the charge-transfer pathway.…”
mentioning
confidence: 99%
“…[1, 2] Conjugated polymers (CPs), including carbon nitride, [3] COFs, [4] CTFs, [5] CMPs, [6] and linear polymers, [7] have recently emerged as anew family of semiconductor photocatalysts,o wing to their advantages, such as tunable structure and properties,e ase of fabrication, environmental friendliness,a nd absence of noble metals.T o date,c onsiderable advances have been achieved by rational design of the structure and by tailoring of the properties of the CPs. [1, 2] Conjugated polymers (CPs), including carbon nitride, [3] COFs, [4] CTFs, [5] CMPs, [6] and linear polymers, [7] have recently emerged as anew family of semiconductor photocatalysts,o wing to their advantages, such as tunable structure and properties,e ase of fabrication, environmental friendliness,a nd absence of noble metals.T o date,c onsiderable advances have been achieved by rational design of the structure and by tailoring of the properties of the CPs.…”
mentioning
confidence: 99%
“…For instance, the doping of cations (e.g., Rh) into SrTiO 3 introduced new energy levels and narrowed its wide bandgap (3.1 eV) to the visible light region (2.4 eV). [11][12][13][14][15][16][17] Currently, the majority of organic/polymeric photocatalysts still suffer from an intrinsic wide bandgap (e.g., ≈2.7 eV for g-C 3 N 4 ) and only responds to a limited region of the solar spectrum (<460 nm), not matching with the strongest portion of 450-700 nm in sunlight (2.7-1.8 eV photons). [10] Compared with the progress in bandgap engineering of inorganic photocatalysts, there have been limited reports of the emerging organic photocatalysts (e.g., heptazine-based polymers and covalent organic frameworks), although they are known for their suitable band positions for water splitting, low-cost, chemical stability, and good tunability of their framework and electronic structures.…”
mentioning
confidence: 99%