scholarly journals Controlled Self-Assembly of λ-DNA Networks with the Synergistic Effect of a DC Electric Field

2019 ◽  
Vol 123 (46) ◽  
pp. 9809-9818 ◽  
Author(s):  
Mingyan Gao ◽  
Jing Hu ◽  
Ying Wang ◽  
Mengnan Liu ◽  
Jianfei Wang ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Electric Field ◽  
Self Assembly ◽  
Dc Electric Field

scholarly journals Controlled Self-Assembly of λ-DNA Networks with the Synergistic Effect of DC Electric Field

2019 ◽  
Author(s):  
M. Gao ◽  
J. Hu ◽  
Y. Wang ◽  
M. Liu ◽  
J. Wang ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Electric Field ◽  
Morphological Change ◽  
Large Scale ◽  
Intensity Change ◽  
Dna Molecules ◽  
Mica Surface ◽  
Regular Structures ◽  
Dc Electric Field ◽  
Self Assembled

AbstractLarge-scale and morphologically controlled self-assembled λ-DNA networks were successfully constructed by the synergistic effect of DC electric field. The effect of DNA concentration, direction and intensity of the electric field, even the modification of the mica surface using Mg2+ on the characteristics of the as-prepared DNA networks were investigated in detail by atomic force microscopy (AFM). It was found that the horizontal electric field was more advantageous to the formation of DNA networks with more regular structures. At the same concentration, the height of DNA network was not affected significantly by the intensity change of the horizontal electric field. The modification of Mg2+ on mica surface increased the aggregation of DNA molecules, which contributed to the morphological change of the DNA networks. Furthermore, DNA molecules were obviously stretched in both horizontal and vertical electric fields at low DNA concentrations.Statement of significanceThrough the synergistic effect of DC electric field, a series of large-scale and morphologically controlled self-assembled λ-DNA networks were successfully fabricated. We found that the horizontal electric field was more advantageous to the formation of DNA networks with more regular structures. At the same concentration of DNA solution, the height of DNA network was not affected significantly by the intensity change of the horizontal electric field. The modification of Mg2+ on mica surface increased the aggregation of DNA molecules, which contributed to the morphological change of the DNA networks. We suggest this study will promote the understanding on the preparation of controllable self-assembled λ-DNA networks and the application of DNA networks.

DC electric field induced phase array self-assembly of Au nanoparticles

2014 ◽  
Vol 25 (46) ◽  
pp. 465301 ◽  
Author(s):  
S Yadavali ◽  
R Sachan ◽  
O Dyck ◽  
R Kalyanaraman
Keyword(s):  
Electric Field ◽  
Self Assembly ◽  
Au Nanoparticles ◽  
Phase Array ◽  
Dc Electric Field

Nonlinear photoacoustic effect of semiconductors in dc electric field

1990 ◽  
Vol 68 (8) ◽  
pp. 3865-3871 ◽  
Author(s):  
Jian‐chun Cheng ◽  
Shu‐yi Zhang ◽  
Yue‐sheng Lu
Keyword(s):  
Electric Field ◽  
Photoacoustic Effect ◽  
Dc Electric Field

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.

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