Building an electron push–pull system of linear conjugated polymers for improving photocatalytic hydrogen evolution efficiency

Wang, Zijian; Mao, Na; Zhao, Yongbo; Yang, Tongjia; Wang, Feng; Jiang, Jia‐Xing

doi:10.1007/s00289-018-2535-3

Cited by 21 publications

(28 citation statements)

References 42 publications

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“…In 2018, Jiang et al reported the design and synthesis of a library of D-A-based linear CP photocatalysts featuring pyrene and pyrimidine units for water splitting. [27] Their results revealed that the introduction of nitrogen atoms into polymer backbones led to remarkable photocatalytic performance because of enhanced interfacial wettability, charge carrier transport, and separation. As a result, PyPm exhibited a high HER, and it is evident that the use of electronic push-pull methods is an effective strategy for achieving high photocatalytic efficiency.…”

Section: Conjugated Linear Polymers Containing a Donor-acceptor (D-a)mentioning

confidence: 99%

“…In general, many organic semiconductor and pristine graphenes-based polymers are insoluble in water and require a certain amount of organic solvent to increase their dispersibility in the reaction phase. [25][26][27][28]39] Polymer dots (Pdots) could be an alternative to pristine and metal-oxide-based (TiO 2 , etc.) photocatalysts for H 2 evolution owing to their solubility and tunable band structures.…”

Section: Conjugated Polymer Dots (Pdots)mentioning

confidence: 99%

“…In 2018, Jiang et al. reported the design and synthesis of a library of D‐A‐based linear CP photocatalysts featuring pyrene and pyrimidine units for water splitting . Their results revealed that the introduction of nitrogen atoms into polymer backbones led to remarkable photocatalytic performance because of enhanced interfacial wettability, charge carrier transport, and separation.…”

Section: Conjugated Linear Polymers Containing a Donor‐acceptor (D‐a)mentioning

confidence: 99%

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Recent Advances in Visible‐Light‐Driven Hydrogen Evolution from Water using Polymer Photocatalysts

2020

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Efficient polymer photocatalysts that mimic natural photosynthesis to generate H 2 through the visible-light-promoted splitting of water are ideal systems for the conversion of solar energy into usable fuel with high energy density and in an environmentally friendly manner. In this article, we review recent reports on donor-acceptor-based π-conjugated polymers as photocatalysts, including conjugated linear polymers, microporous polymers, triazine frameworks, covalent organic frameworks, polymer dots, and other related organic polymers, which show superior photocatalytic activity and robust stability under visible-light irradiation, for hydrogen production. Moreover, their syntheses and material design strategies, photophysical properties, proposed mechanisms, and applications are systematically summarized. Finally, recent research on and challenges related to organic polymer photocatalysts are discussed. This minireview will help readers to more easily understand the recent advances in and future direction of this field.

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Section: Conjugated Linear Polymers Containing a Donor-acceptor (D-a)mentioning

confidence: 99%

Section: Conjugated Polymer Dots (Pdots)mentioning

confidence: 99%

Section: Conjugated Linear Polymers Containing a Donor‐acceptor (D‐a)mentioning

confidence: 99%

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Recent Advances in Visible‐Light‐Driven Hydrogen Evolution from Water using Polymer Photocatalysts

2020

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“…Pyrene as a well-known chromophore has been widely used in OLEDs and fluorescent probes due to its high photoluminescent quantum yield. Jiang et al [ 57 ] introduced various sorts of nitrogen-containing fragments in pyrene-based polymers to investigate their photocatalytic performance, for example, P30 and P31 ( Figure 4 ). Interestingly, different from the above examples, the pyrimidine-containing P30 (18.7 μmol·h −1 , 50 mg) exhibited a much higher HER than P31 with pyrazine moieties (8.6 μmol·h −1 , 50 mg).…”

Section: Reviewmentioning

confidence: 99%

Nanoporous and nonporous conjugated donor–acceptor polymer semiconductors for photocatalytic hydrogen production

Sheng¹,

Xing²,

Chen³

et al. 2021

Beilstein J. Nanotechnol.

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Conjugated polymers (CPs) as photocatalysts have evoked substantial interest. Their geometries and physical (e.g., chemical and thermal stability and solubility), optical (e.g., light absorption range), and electronic properties (e.g., charge carrier mobility, redox potential, and exciton binding energy) can be easily tuned via structural design. In addition, they are of light weight (i.e., mainly composed of C, N, O, and S). To improve the photocatalytic performance of CPs and better understand the catalytic mechanisms, many strategies with respect to material design have been proposed. These include tuning the bandgap, enlarging the surface area, enabling more efficient separation of electron–hole pairs, and enhancing the charge carrier mobility. In particular, donor–acceptor (D–A) polymers were demonstrated as a promising platform to develop high-performance photocatalysts due to their easily tunable bandgaps, high charge carrier mobility, and efficient intramolecular charge transfer. In this minireview, recent advances of D–A polymers in photocatalytic hydrogen evolution are summarized with a particular focus on modulating the optical and electronic properties of CPs by varying the acceptor units. The challenges and prospects associated with D–A polymer-based photocatalysts are described as well.

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“…For example, the construction of a D–A or D–π–A (D: donor, A: acceptor) polymer could efficiently promote the separation of photogenerated carriers, resulting in the improvement of photocatalytic activity. The introduction of polycyclic aromatic building blocks (e.g., pyrene) and strong electron‐withdrawing units (e.g., benzothiadiazole) into the polymer skeleton could also improve the separation efficiency of charge carriers owing to the increased electron push–pull effect . 1D linear polymers show enhanced conductive performance and higher charge‐transmission ability along the 1D polymer backbone than 3D polymers, and thus exhibit higher photocatalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Bisulfone‐Functionalized Organic Polymer Photocatalysts for High‐Performance Hydrogen Evolution

et al. 2019

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Conjugated polymers show great potential in the application of photocatalysis, particularly for the photoreduction reaction of water to generate hydrogen. Molecular structure design is a key part for building a high‐performance organic photocatalyst. Herein, two bisulfone‐containing conjugated polymer photocatalysts were constructed with 1D or 3D polymer structures, and the effect of polymer geometry on photocatalytic activity was studied. It was found that the linear polymer PySEO‐1 exhibited increased photocatalytic performance compared with the 3D polymer network PySEO‐2 because the enhanced coplanarity of the polymeric chain in PySEO‐1 promoted the photogenerated charge‐carrier transmission along the 1D main chain. As a result, an attractive hydrogen generation rate of 9477 μmol h−1 g−1 was obtained with PySEO‐1 under broadband light irradiation. PySEO‐1 also exhibited a high external quantum efficiency of 4.1 % at an incident light wavelength of 400 nm, demonstrating that the bisulfone‐containing polymers are attractive as organic photocatalysts for hydrogen production.

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Building an electron push–pull system of linear conjugated polymers for improving photocatalytic hydrogen evolution efficiency

Cited by 21 publications

References 42 publications

Recent Advances in Visible‐Light‐Driven Hydrogen Evolution from Water using Polymer Photocatalysts

Recent Advances in Visible‐Light‐Driven Hydrogen Evolution from Water using Polymer Photocatalysts

Nanoporous and nonporous conjugated donor–acceptor polymer semiconductors for photocatalytic hydrogen production

Bisulfone‐Functionalized Organic Polymer Photocatalysts for High‐Performance Hydrogen Evolution

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