scholarly journals An In-Situ Reaction Route to Molecular Level Dispersed Bisimide and ZnO Nanorod Hybrids with Efficient Photo-Induced Charge Transfer

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Chunzheng Lv ◽  
Lirong He ◽  
Jiahong Tang ◽  
Feng Yang ◽  
Chuhong Zhang
Keyword(s):  
Charge Transfer ◽  
Electric Field ◽  
Self Assembly ◽  
Molecular Level ◽  
Surface Photovoltage ◽  
Zno Nanorod ◽  
In Situ Reaction ◽  
Perylene Bisimide ◽  
Induced Charge

AbstractAs an important photoconductive hybrid material, perylene/ZnO has attracted tremendous attention for photovoltaic-related applications, but generally faces a great challenge to design molecular level dispersed perylenes/ZnO nanohybrids due to easy phase separation between perylenes and ZnO nanocrystals. In this work, we reported an in-situ reaction method to prepare molecular level dispersed H-aggregates of perylene bisimide/ZnO nanorod hybrids. Surface photovoltage and electric field-induced surface photovoltage spectrum show that the photovoltage intensities of nanorod hybrids increased dramatically for 100 times compared with that of pristine perylene bisimide. The enhancement of photovoltage intensities resulting from two aspects: (1) the photo-generated electrons transfer from perylene bisimide to ZnO nanorod due to the electric field formed on the interface of perylene bisimide/ZnO; (2) the H-aggregates of perylene bisimide in ZnO nanorod composites, which is beneficial for photo-generated charge separation and transportation. The introduction of ordered self-assembly thiol-functionalized perylene-3,4,9,10-tetracarboxylic diimide (T-PTCDI)/ ZnO nanorod composites induces a significant improvement in incident photo-to-electron conversion efficiency. This work provides a novel mentality to boost photo-induced charge transfer efficiency, which brings new inspiration for the preparation of the highly efficient solar cell.

scholarly journals An in-situ Reaction Route to Molecular Level Dispersed Bisimide and ZnO Nanorod Hybrids With Efficient Photo-Induced Charge Transfer

2021 ◽  
Author(s):  
Chunzheng Lv ◽  
Lirong He ◽  
Jiahong Tang ◽  
Feng Yang ◽  
Chuhong Zhang
Keyword(s):  
Charge Transfer ◽  
Electric Field ◽  
Self Assembly ◽  
Molecular Level ◽  
Surface Photovoltage ◽  
Zno Nanorod ◽  
In Situ Reaction ◽  
Perylene Bisimide ◽  
Induced Charge

Abstract As an important photoconductive hybrid material, perylene/ZnO has attracted tremendous attention for photovoltaics related applications, but generally faces a great challenge to design molecular level dispersed perylenes/ZnO nanohybrids due to easy phase separation between perylenes and ZnO nanocrystals. In this work, we reported an in-situ reaction method to prepare molecular level dispersed H-aggregates of perylene bisimide/ZnO nanorod hybrids. Surface photovoltage and electric field induced surface photovoltage spectrum show that the photovoltage intensities of nanorod hybrids increased dramatically for 100 times compared with that of pristine perylene bisimide. The enhancement of photovoltage intensities resulting from two aspects: 1) the photo-generated electrons transfer from perylene bisimide to ZnO nanorod due to the electric field formed on the interface of perylene bisimide /ZnO; 2) the H-aggregates of perylene bisimide in ZnO nanorod composites, which is beneficial for photo-generated charge separation and transportation. The introduction of ordered self-assembly T-PTCDI/ZnO nanorod composites induces a significant improvement in incident photo-to-electron conversion efficiency. This work provides a novel mentality to boost photo-induced charge transfer efficiency, which brings new inspiration for the preparation of the highly efficient solar cell.

Modulating Unidirectional Charge Transfer via in Situ Etching-Accompanied Layer-By-Layer Self-Assembly toward Multifarious Photoredox Catalysis

2019 ◽  
Vol 123 (46) ◽  
pp. 28066-28080 ◽  
Author(s):  
Hua-Jian Lin ◽  
Tao Li ◽  
Ming-Hui Huang ◽  
Xiao-Cheng Dai ◽  
Yu-Bing Li ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Layer By Layer ◽  
Photoredox Catalysis

Creating and Optimizing Interfaces for Electric-Field and Photon-Induced Charge Transfer

ACS Nano ◽  
2012 ◽  
Vol 6 (11) ◽  
pp. 9466-9474 ◽  
Author(s):  
Byoungnam Park ◽  
Kevin Whitham ◽  
Jiung Cho ◽  
Elsa Reichmanis
Keyword(s):  
Charge Transfer ◽  
Electric Field ◽  
Induced Charge

scholarly journals Electric-Field-Induced Charge-Transfer Phase Transition: A Promising Approach Toward Electrically Switchable Devices

2009 ◽  
Vol 131 (41) ◽  
pp. 15049-15054 ◽  
Author(s):  
Tarik Mahfoud ◽  
Gábor Molnár ◽  
Sébastien Bonhommeau ◽  
Saioa Cobo ◽  
Lionel Salmon ◽  
...  
Keyword(s):  
Phase Transition ◽  
Charge Transfer ◽  
Electric Field ◽  
Transfer Phase ◽  
Induced Charge

Synthesis and nonvolatile memristive switching effect of a donor–acceptor structured oligomer

2015 ◽  
Vol 3 (3) ◽  
pp. 664-673 ◽  
Author(s):  
Cheng Wang ◽  
Gang Liu ◽  
Yu Chen ◽  
Run-Wei Li ◽  
Wenbin Zhang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Electric Field ◽  
Electrical Response ◽  
Switching Effect ◽  
The Novel ◽  
Transmission Characteristics ◽  
Memristive Behavior ◽  
Donor Acceptor ◽  
Induced Charge ◽  
First Time

Self-rectified memristive behavior and nonlinear transmission characteristics were for the first time observed in a highly soluble all-conjugated oligomer. The novel electrical response of the device is arising from electric field-induced charge transfer interaction in the donor–acceptor structured oligomer.

scholarly journals Charge-transfer regulated visible light driven photocatalytic H2 production and CO2 reduction in tetrathiafulvalene based coordination polymer gel

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Parul Verma ◽  
Ashish Singh ◽  
Faruk Ahamed Rahimi ◽  
Pallavi Sarkar ◽  
Sukhendu Nath ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Charge Transfer ◽  
Coordination Polymer ◽  
Visible Light ◽  
Self Assembly ◽  
Hydrogen Generation ◽  
Co2 Reduction ◽  
Pt Nanoparticles ◽  
Polymer Gel

AbstractThe much-needed renewable alternatives to fossil fuel can be achieved efficiently and sustainably by converting solar energy to fuels via hydrogen generation from water or CO2 reduction. Herein, a soft processable metal-organic hybrid material is developed and studied for photocatalytic activity towards H2 production and CO2 reduction to CO and CH4 under visible light as well as direct sunlight irradiation. A tetrapodal low molecular weight gelator (LMWG) is synthesized by integrating tetrathiafulvalene (TTF) and terpyridine (TPY) derivatives through amide linkages and results in TPY-TTF LMWG. The TPY-TTF LMWG acts as a linker, and self-assembly of this gelator molecules with ZnII ions results in a coordination polymer gel (CPG); Zn-TPY-TTF. The Zn-TPY-TTF CPG shows high photocatalytic activity towards H2 production (530 μmol g−1h−1) and CO2 reduction to CO (438 μmol g−1h−1, selectivity > 99%) regulated by charge-transfer interactions. Furthermore, in situ stabilization of Pt nanoparticles on CPG (Pt@Zn-TPY-TTF) enhances H2 evolution (14727 μmol g−1h−1). Importantly, Pt@Zn-TPY-TTF CPG produces CH4 (292 μmol g−1h−1, selectivity > 97%) as CO2 reduction product instead of CO. The real-time CO2 reduction reaction is monitored by in situ DRIFT study, and the plausible mechanism is derived computationally.

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