Amino-functionalised conjugated porous polymers for improved photocatalytic hydrogen evolution

Lin, Kaiwen; Wang, Zhenfeng; Hu, Zhicheng; Luo, Peng; Yang, Xiye; Zhang, Xi; Rafiq, Muhammad; Huang, Fei; Cao, Yong

doi:10.1039/c9ta06219j

Cited by 55 publications

(44 citation statements)

References 60 publications

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“…It was found that the hydrogen bonds formed between nitrogen atoms and water molecules accelerate interfacial charge transfer from BBTÀ SC2NH2 to water. Lin et al [34] used tertiary amine groups to modify CPP, resulting in a hydrophilic CPP TrÀ F3N (Scheme 2) with improved photocatalytic performance. Compared to alkyl side chains modified TrÀ F8, the amino groups could bind with water through hydrogen bond and adsorb more water molecules, thus improving the hydrophilicity and water uptake ability, resulting in a great improvement in HER.…”

Section: Non-ionic Hydrophilic Conjugated Materialsmentioning

confidence: 99%

“…It was found that the hydrogen bonds formed between nitrogen atoms and water molecules accelerate interfacial charge transfer from BBT−SC2NH2 to water. Lin et al . used tertiary amine groups to modify CPP, resulting in a hydrophilic CPP Tr−F3N (Scheme ) with improved photocatalytic performance.…”

Section: Hydrophilic Conjugated Materials For Photocatalytic Applicatmentioning

confidence: 99%

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Hydrophilic Conjugated Materials for Photocatalytic Hydrogen Evolution

Bai

Jiang

et al. 2020

Chemistry An Asian Journal

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Photocatalytic hydrogen evolution is viewed as a promising green strategy to utilize the inexhaustible solar energy and provide clean hydrogen fuels with zeroemission characteristic. The nature of semiconductor-based photocatalysts is the key point to achieve efficient photocatalytic hydrogen evolution. Conjugated materials have been recently emerging as a novel class of photocatalysts for hydrogen evolution and photocatalytic reactions due to their electronic properties can be well controlled via tailormade chemical structures. Hydrophilic conjugated materials, a subgroup of conjugated materials, possess multiple advantages for photocatalytic applications, thus spurring remarkable progress on both material realm and photocatalytic applications. This minireview aims to provide a brief review of the recent developments of hydrophilic conjugated polymers/small molecules for photocatalytic applications, and special concern on the rational molecular design and their impact on photocatalytic performance will be reviewed. Perspectives on the hydrophilic conjugated materials and challenges to their applications in the photocatalytic field are also presented.

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Section: Non-ionic Hydrophilic Conjugated Materialsmentioning

confidence: 99%

Section: Hydrophilic Conjugated Materials For Photocatalytic Applicatmentioning

confidence: 99%

Hydrophilic Conjugated Materials for Photocatalytic Hydrogen Evolution

Bai

Jiang

et al. 2020

Chemistry An Asian Journal

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“… 34 − 36 Due to the hydrophobic nature of most polymeric photocatalyst surface, wetting seems to be particularly important. 37 − 39 Several studies have shown that the introduction of polar groups results in materials with higher photocatalytic activities. 12 , 39 − 41 Large surface area to maximize the exposed surface to water can also be beneficial.…”

Section: Introductionmentioning

confidence: 99%

“… 37 − 39 Several studies have shown that the introduction of polar groups results in materials with higher photocatalytic activities. 12 , 39 − 41 Large surface area to maximize the exposed surface to water can also be beneficial. Therefore, porous photocatalysts with high Brunauer–Emmett–Teller surface areas (SA BET ), namely, COFs and CMPs, 42 − 44 have been developed for photocatalysis.…”

Section: Introductionmentioning

confidence: 99%

Impact of Chemical Structure on the Dynamics of Mass Transfer of Water in Conjugated Microporous Polymers: A Neutron Spectroscopy Study

Guilbert

Bai

Aitchison

et al. 2021

ACS Appl. Polym. Mater.

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Hydrogen fuel can contribute as a masterpiece in conceiving a robust carbon-free economic puzzle if cleaner methods to produce hydrogen become technically efficient and economically viable. Organic photocatalytic materials such as conjugated microporous materials (CMPs) are potential attractive candidates for water splitting as their energy levels and optical band gap as well as porosity are tunable through chemical synthesis. The performances of CMPs depend also on the mass transfer of reactants, intermediates, and products. Here, we study the mass transfer of water (H 2 O and D 2 O) and of triethylamine, which is used as a hole scavenger for hydrogen evolution, by means of neutron spectroscopy. We find that the stiffness of the nodes of the CMPs is correlated with an increase in trapped water, reflected by motions too slow to be quantified by quasi-elastic neutron scattering (QENS). Our study highlights that the addition of the polar sulfone group results in additional interactions between water and the CMP, as evidenced by inelastic neutron scattering (INS), leading to changes in the translational diffusion of water, as determined from the QENS measurements. No changes in triethylamine motions could be observed within the CMPs from the present investigations.

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“…Organic semiconducting polymer photocatalysts with excellent photocatalytic performance have attracted much interests for hydrogen evolution recently, owing to their diverse structural design, tunable functions, suitable electronic structure, and broad light harvesting in the visible region . In the past years, various organic polymer semiconductors with different structures and functions [e.g., conductive polymers (CPs), conjugated microporous polymers (CMPs), covalent triazine frameworks (CTFs), and covalent organic frameworks (COFs)] have been investigated as photocatalysts, and significant achievements have been obtained in the photocatalytic performance.…”

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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Amino-functionalised conjugated porous polymers for improved photocatalytic hydrogen evolution

Abstract: We introduced hydrophilic side chains into conjugated porous polymers and realised enhanced photocatalytic hydrogen evolution rates.

Cited by 55 publications

References 60 publications

Hydrophilic Conjugated Materials for Photocatalytic Hydrogen Evolution

Hydrophilic Conjugated Materials for Photocatalytic Hydrogen Evolution

Impact of Chemical Structure on the Dynamics of Mass Transfer of Water in Conjugated Microporous Polymers: A Neutron Spectroscopy Study

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

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