scholarly journals Microscopic observation of efficient charge transport processes across domain boundaries in donor-acceptor-type conjugated polymers

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Hisaaki Tanaka ◽  
Ayato Wakamatsu ◽  
Masahiro Kondo ◽  
Shinya Kawamura ◽  
Shin-ichi Kuroda ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Charge Transport ◽  
Microscopic Observation ◽  
Transport Processes ◽  
Domain Boundaries ◽  
Efficient Charge ◽  
Donor Acceptor

scholarly journals Conjugated Polymer Donor-Molecular Acceptor Nanohybrids for Photocatalytic Hydrogen Evolution

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/PC<sub>60</sub>BM) showed a high hydrogen evolution rate of 105.2 mmol g<sup>-1</sup> h<sup>-1</sup> 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<sup>-1</sup> h<sup>-1</sup>, is attributed to efficient charge transfer at the polymer donor/molecular acceptor interface. We also show that ternary donor<sub>A</sub>-donor<sub>B</sub>-acceptor nanohybrids can give higher activities than binary donor-acceptor hybrids in some cases.

Strain-Insensitive Naphthalene-Diimide-Based Conjugated Polymers Through Sequential Regularity Control

2022 ◽  
Author(s):  
Yan-Cheng Lin ◽  
Kosuke Terayama ◽  
Keita Yoshida ◽  
Ping-Jui Yu ◽  
Pin-Hsiang Chueh ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Charge Transport ◽  
Structure Design ◽  
Naphthalene Diimide ◽  
Mechanical Durability ◽  
Donor Acceptor

Diversified structure design is applied to donor−acceptor (D−A)-type conjugated polymers (CPs) to improve their mobility−stretchability properties. Most methods that are capable of improving mechanical durability without sacrificing charge transport performance...

scholarly journals Conjugated Polymer Donor-Molecular Acceptor Nanohybrids for Photocatalytic Hydrogen Evolution

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/PC<sub>60</sub>BM) showed a high hydrogen evolution rate of 105.2 mmol g<sup>-1</sup> h<sup>-1</sup> 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<sup>-1</sup> h<sup>-1</sup>, is attributed to efficient charge transfer at the polymer donor/molecular acceptor interface. We also show that ternary donor<sub>A</sub>-donor<sub>B</sub>-acceptor nanohybrids can give higher activities than binary donor-acceptor hybrids in some cases.

Carbon Nanotube Wiring of Donor-Acceptor Nanograins by Self-Assembly and Efficient Charge Transport

2011 ◽  
Vol 123 (20) ◽  
pp. 4711-4715 ◽  
Author(s):  
Tomokazu Umeyama ◽  
Noriyasu Tezuka ◽  
Fumiaki Kawashima ◽  
Shu Seki ◽  
Yoshihiro Matano ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Charge Transport ◽  
Self Assembly ◽  
Efficient Charge ◽  
Donor Acceptor

Carbon Nanotube Wiring of Donor-Acceptor Nanograins by Self-Assembly and Efficient Charge Transport

2011 ◽  
Vol 50 (20) ◽  
pp. 4615-4619 ◽  
Author(s):  
Tomokazu Umeyama ◽  
Noriyasu Tezuka ◽  
Fumiaki Kawashima ◽  
Shu Seki ◽  
Yoshihiro Matano ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Charge Transport ◽  
Self Assembly ◽  
Efficient Charge ◽  
Donor Acceptor

Modulating charge transport characteristics of bis-azaisoindigo-based D–A conjugated polymers through energy level regulation and side chain optimization

2019 ◽  
Vol 7 (25) ◽  
pp. 7618-7626 ◽  
Author(s):  
Kaiqiang Huang ◽  
Xue Zhao ◽  
Yuchang Du ◽  
Sanghyo Kim ◽  
Xiaohong Wang ◽  
...  
Keyword(s):  
Energy Level ◽  
Conjugated Polymers ◽  
Charge Transport ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Electron Acceptors ◽  
Side Chain ◽  
The Novel ◽  
Organic Field Effect Transistors ◽  
Donor Acceptor

Six donor–acceptor (D–A) conjugated polymers, P1–P6, based on the novel electron acceptors bis-isoindigo (BIID) and bis-azaisoindigo (BAID), were designed and synthesized for solution-processed organic field-effect transistors.

Stimuli responsive donor-acceptor poly (dithienyl-benzothiadiazole) for efficient charge transport applications

2019 ◽  
Vol 222 ◽  
pp. 55-62
Author(s):  
Renjith Sasi ◽  
K.B. Jinesh ◽  
Molji Cheriyathuchenaaramvalli ◽  
Sudha J. Devaki
Keyword(s):  
Charge Transport ◽  
Stimuli Responsive ◽  
Efficient Charge ◽  
Donor Acceptor

scholarly journals Conjugated Polymer Donor-Molecular Acceptor Nanohybrids for Photocatalytic Hydrogen Evolution

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/PC<sub>60</sub>BM) showed a high hydrogen evolution rate of 105.2 mmol g<sup>-1</sup> h<sup>-1</sup> 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<sup>-1</sup> h<sup>-1</sup>, is attributed to efficient charge transfer at the polymer donor/molecular acceptor interface. We also show that ternary donor<sub>A</sub>-donor<sub>B</sub>-acceptor nanohybrids can give higher activities than binary donor-acceptor hybrids in some cases.

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