A donor–acceptor–donor-type conjugated polymer-modified TiO2 with enhanced photocatalytic activity under simulated sunlight and natural sunlight

A library of 237 organic binary/ternary nanohybrids consisting of conjugated polymers donors and both fullerene and non-fullerene molecular acceptors was prepared and screened for sacrificial photocatalytic hydrogen evolution. These donor-acceptor nanohybrids (DANHs) showed significantly enhanced hydrogen evolution rates compared with the parent donor or acceptor compounds. DANHs of <a></a><a>a polycarbazole</a>-based donor combined with a methanofullerene acceptor (PCDTBT/PC60BM) showed a high hydrogen evolution rate of 105.2 mmol g-1 h-1 under visible light (λ > 420 nm). This DANH photocatalyst produced 5.9 times more hydrogen than a sulfone-containing polymer (P10) under the same conditions, which is one of the most efficient organic photocatalysts reported so far. An apparent quantum yield of hydrogen evolution of 3.0 % at 595 nm was measured for this DANH. The photocatalytic activity of the DANHs, which in optimized cases reached 179.0 mmol g-1 h-1, is attributed to efficient charge transfer at the polymer donor/molecular acceptor interface. We also show that ternary donorA-donorB-acceptor nanohybrids can give higher activities than binary donor-acceptor hybrids in some cases.

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Conjugated Polymer Donor-Molecular Acceptor Nanohybrids for Photocatalytic Hydrogen Evolution

10.26434/chemrxiv.11418375.v1 ◽

2019 ◽

Author(s):

Haofan Yang ◽

Xiaobo Li ◽

Reiner Sebastian Sprick ◽

Andrew I. Cooper

Keyword(s):

Photocatalytic Activity ◽

Charge Transfer ◽

Conjugated Polymers ◽

Hydrogen Evolution ◽

Conjugated Polymer ◽

Apparent Quantum Yield ◽

High Hydrogen ◽

Photocatalytic Hydrogen Evolution ◽

Efficient Charge ◽

Donor Acceptor

A library of 237 organic binary/ternary nanohybrids consisting of conjugated polymers donors and both fullerene and non-fullerene molecular acceptors was prepared and screened for sacrificial photocatalytic hydrogen evolution. These donor-acceptor nanohybrids (DANHs) showed significantly enhanced hydrogen evolution rates compared with the parent donor or acceptor compounds. DANHs of <a></a><a>a polycarbazole</a>-based donor combined with a methanofullerene acceptor (PCDTBT/PC60BM) showed a high hydrogen evolution rate of 105.2 mmol g-1 h-1 under visible light (λ > 420 nm). This DANH photocatalyst produced 5.9 times more hydrogen than a sulfone-containing polymer (P10) under the same conditions, which is one of the most efficient organic photocatalysts reported so far. An apparent quantum yield of hydrogen evolution of 3.0 % at 595 nm was measured for this DANH. The photocatalytic activity of the DANHs, which in optimized cases reached 179.0 mmol g-1 h-1, is attributed to efficient charge transfer at the polymer donor/molecular acceptor interface. We also show that ternary donorA-donorB-acceptor nanohybrids can give higher activities than binary donor-acceptor hybrids in some cases.

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A ferrocene functionalized multichromic p and n dopable donor–acceptor–donor type conjugated polymer

Journal of Electroanalytical Chemistry ◽

10.1016/j.jelechem.2010.07.010 ◽

2010 ◽

Vol 648 (2) ◽

pp. 184-189 ◽

Cited By ~ 17

Author(s):

Şerife Özdemir ◽

Abidin Balan ◽

Derya Baran ◽

Özdemir Doğan ◽

Levent Toppare

Keyword(s):

Conjugated Polymer ◽

Donor Type ◽

Donor Acceptor

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Structure and photocatalytic activity of a low band gap donor–acceptor–donor (D–A–D) type conjugated polymer: poly(EDOT–pyridazine–EDOT)

RSC Advances ◽

10.1039/c6ra25252d ◽

2017 ◽

Vol 7 (4) ◽

pp. 1877-1886 ◽

Cited By ~ 5

Author(s):

Lei Yang ◽

Ruxangul Jamal ◽

Fangfang Liu ◽

Yujie Wang ◽

Tursun Abdiryim

Keyword(s):

Photocatalytic Activity ◽

Photocatalytic Degradation ◽

Band Gap ◽

Conjugated Polymer ◽

Degradation Mechanism ◽

Low Band Gap ◽

Donor Acceptor ◽

Photocatalytic Degradation Mechanism

This study presents a new low band gap D–A–D type conjugated polymer: poly(EPE). The photocatalytic activity of poly(EPE) was explored, and a possible photocatalytic degradation mechanism of dyes was proposed.

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Correction: Structure and photocatalytic activity of a low band gap donor–acceptor–donor (D–A–D) type conjugated polymer: poly(EDOT-pyridazine-EDOT)

RSC Advances ◽

10.1039/c7ra90008b ◽

2017 ◽

Vol 7 (14) ◽

pp. 8625-8626 ◽

Cited By ~ 2

Author(s):

Lei Yang ◽

Ruxangul Jamal ◽

Fangfang Liu ◽

Yujie Wang ◽

Tursun Abdiryim

Keyword(s):

Photocatalytic Activity ◽

Band Gap ◽

Conjugated Polymer ◽

Low Band Gap ◽

Donor Acceptor

Correction for ‘Structure and photocatalytic activity of a low band gap donor–acceptor–donor (D–A–D) type conjugated polymer: poly(EDOT-pyridazine-EDOT)’ by Lei Yang et al., RSC Adv., 2017, 7, 1877–1886.

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Conjugated Polymer Donor-Molecular Acceptor Nanohybrids for Photocatalytic Hydrogen Evolution

10.26434/chemrxiv.11418375 ◽

2019 ◽

Author(s):

Haofan Yang ◽

Xiaobo Li ◽

Reiner Sebastian Sprick ◽

Andrew I. Cooper

Keyword(s):

Photocatalytic Activity ◽

Charge Transfer ◽

Conjugated Polymers ◽

Hydrogen Evolution ◽

Conjugated Polymer ◽

Apparent Quantum Yield ◽

High Hydrogen ◽

Photocatalytic Hydrogen Evolution ◽

Efficient Charge ◽

Donor Acceptor

A library of 237 organic binary/ternary nanohybrids consisting of conjugated polymers donors and both fullerene and non-fullerene molecular acceptors was prepared and screened for sacrificial photocatalytic hydrogen evolution. These donor-acceptor nanohybrids (DANHs) showed significantly enhanced hydrogen evolution rates compared with the parent donor or acceptor compounds. DANHs of <a></a><a>a polycarbazole</a>-based donor combined with a methanofullerene acceptor (PCDTBT/PC60BM) showed a high hydrogen evolution rate of 105.2 mmol g-1 h-1 under visible light (λ > 420 nm). This DANH photocatalyst produced 5.9 times more hydrogen than a sulfone-containing polymer (P10) under the same conditions, which is one of the most efficient organic photocatalysts reported so far. An apparent quantum yield of hydrogen evolution of 3.0 % at 595 nm was measured for this DANH. The photocatalytic activity of the DANHs, which in optimized cases reached 179.0 mmol g-1 h-1, is attributed to efficient charge transfer at the polymer donor/molecular acceptor interface. We also show that ternary donorA-donorB-acceptor nanohybrids can give higher activities than binary donor-acceptor hybrids in some cases.

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