DNA Electrochemistry: Charge-Transport Pathways through DNA Films on Gold

2021 ◽  
Author(s):  
Adela Nano ◽  
Ariel L. Furst ◽  
Michael G. Hill ◽  
Jacqueline K. Barton
Keyword(s):  
Charge Transport ◽  
Transport Pathways ◽  
Dna Films ◽  
Dna Electrochemistry

Carbon nanotubes as the effective charge transport pathways for planar perovskite photodetector

2018 ◽  
Vol 59 ◽  
pp. 156-163 ◽  
Author(s):  
Wei-Long Xu ◽  
Meng-Si Niu ◽  
Xiao-Yu Yang ◽  
Jin Xiao ◽  
Hong-Chun Yuan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Charge Transport ◽  
Effective Charge ◽  
Transport Pathways

Opening charge transport pathways

Science ◽  
2021 ◽  
Vol 371 (6527) ◽  
pp. 358.5-359
Author(s):  
Phil Szuromi
Keyword(s):  
Charge Transport ◽  
Transport Pathways

scholarly journals Repurposing DNA-binding agents as H-bonded organic semiconductors

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Fengjiao Zhang ◽  
Vincent Lemaur ◽  
Wookjin Choi ◽  
Prapti Kafle ◽  
Shu Seki ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Charge Transport ◽  
Organic Semiconductors ◽  
Field Effect Transistors ◽  
Materials Chemistry ◽  
Transport Pathways ◽  
Potential Applications ◽  
Efficient Charge ◽  
Polycyclic Aromatic ◽  
End Distance

Abstract Organic semiconductors are usually polycyclic aromatic hydrocarbons and their analogs containing heteroatom substitution. Bioinspired materials chemistry of organic electronics promises new charge transport mechanism and specific molecular recognition with biomolecules. We discover organic semiconductors from deoxyribonucleic acid topoisomerase inhibitors, featuring conjugated backbone decorated with hydrogen-bonding moieties distinct from common organic semiconductors. Using ellipticine as a model compound, we find that hydrogen bonds not only guide polymorph assembly, but are also critical to forming efficient charge transport pathways along π−conjugated planes when at a low dihedral angle by shortening the end-to-end distance of adjacent π planes. In the π−π stacking and hydrogen-bonding directions, the intrinsic, short-range hole mobilities reach as high as 6.5 cm2V−1s−1 and 4.2 cm2V−1s−1 measured by microwave conductivity, and the long-range apparent hole mobilities are up to 1.3 × 10–3 cm2V−1s−1 and 0.4 × 10–3 cm2V−1s−1 measured in field-effect transistors. We further demonstrate printed transistor devices and chemical sensors as potential applications.

scholarly journals Strategies for Controlling Through-Space Charge Transport in Metal-Organic Frameworks via Structural Modifications

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2372
Author(s):  
Christian Winkler ◽  
Egbert Zojer
Keyword(s):  
Space Charge ◽  
Charge Transport ◽  
Density Functional ◽  
Metal Organic Frameworks ◽  
Building Blocks ◽  
Structural Defects ◽  
Transport Pathways ◽  
Metal Organic ◽  
The Individual ◽  
The Impact

In recent years, charge transport in metal-organic frameworks (MOFs) has shifted into the focus of scientific research. In this context, systems with efficient through-space charge transport pathways resulting from π-stacked conjugated linkers are of particular interest. In the current manuscript, we use density functional theory-based simulations to provide a detailed understanding of such MOFs, which, in the present case, are derived from the prototypical Zn2(TTFTB) system (with TTFTB4− corresponding to tetrathiafulvalene tetrabenzoate). In particular, we show that factors such as the relative arrangement of neighboring linkers and the details of the structural conformations of the individual building blocks have a profound impact on bandwidths and charge transfer. Considering the helical stacking of individual tetrathiafulvalene (TTF) molecules around a screw axis as the dominant symmetry element in Zn2(TTFTB)-derived materials, the focus, here, is primarily on the impact of the relative rotation of neighboring molecules. Not unexpectedly, changing the stacking distance in the helix also plays a distinct role, especially for structures which display large electronic couplings to start with. The presented results provide guidelines for achieving structures with improved electronic couplings. It is, however, also shown that structural defects (especially missing linkers) provide major obstacles to charge transport in the studied, essentially one-dimensional systems. This suggests that especially the sample quality is a decisive factor for ensuring efficient through-space charge transport in MOFs comprising stacked π-systems.

Charge Transport Pathways of π‐Conjugated Metal–Organic Frameworks

2020 ◽  
Vol 41 (6) ◽  
pp. 592-594 ◽  
Author(s):  
Seok Min Yoon
Keyword(s):  
Charge Transport ◽  
Metal Organic Frameworks ◽  
Transport Pathways ◽  
Metal Organic

A Polymer Blend Approach for Creation of Effective Conjugated Polymer Charge Transport Pathways

2018 ◽  
Vol 10 (42) ◽  
pp. 36464-36474 ◽  
Author(s):  
Michael McBride ◽  
Nils Persson ◽  
Danny Keane ◽  
Guillermo Bacardi ◽  
Elsa Reichmanis ◽  
...  
Keyword(s):  
Charge Transport ◽  
Polymer Blend ◽  
Conjugated Polymer ◽  
Transport Pathways

Charge transport pathways in metal porphyrin as interplay between long and short range scattering processes

2018 ◽  
Vol 30 (4) ◽  
pp. 045204
Author(s):  
L Buimaga-Iarinca ◽  
C Morari
Keyword(s):  
Charge Transport ◽  
Short Range ◽  
Metal Porphyrin ◽  
Transport Pathways

scholarly journals Isoreticular Linker Substitution in Conductive Metal–Organic Frameworks with Through-Space Transport Pathways

2020 ◽  
Author(s):  
Lilia S. Xie ◽  
Sarah S. Park ◽  
Michał J. Chmielewski ◽  
Hanyu Liu ◽  
Ruby A. Kharod ◽  
...  
Keyword(s):  
Charge Transport ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Strong Interactions ◽  
Conductivity Data ◽  
Electrically Conductive ◽  
Transport Pathways ◽  
Intermolecular Contacts ◽  
Metal Organic

<p>The extension of reticular chemistry concepts to electrically conductive three-dimensional metal-organic frameworks (MOFs) has been challenging, particularly for cases in which strong interactions between electroactive linkers create the charge transport pathways. Here, we report the successful replacement of tetrathiafulvalene (TTF) with a nickel glyoximate core in a family of isostructural conductive MOFs with Mn<sup>2+</sup>, Zn<sup>2+</sup>, and Cd<sup>2+</sup>. Different coordination environments of the framework metals lead to variations in the linker stacking geometries and optical properties. Single crystal conductivity data are consistent with charge transport along the linker stacking direction, with conductivity values only slightly lower than those reported for the analogous TTF materials. These results serve as a case study demonstrating how reticular chemistry design principles can be extended to conductive frameworks with significant intermolecular contacts.</p>

Switching of Charge Transport Pathways via Delocalization Changes in Single-Molecule Metallacycles Junctions

2017 ◽  
Vol 139 (41) ◽  
pp. 14344-14347 ◽  
Author(s):  
Ruihao Li ◽  
Zhengyu Lu ◽  
Yuanting Cai ◽  
Feng Jiang ◽  
Chun Tang ◽  
...  
Keyword(s):  
Charge Transport ◽  
Single Molecule ◽  
Transport Pathways

Improved charge transport and injection in a meso-superstructured solar cell by a tractable pre-spin-coating process

2015 ◽  
Vol 17 (37) ◽  
pp. 24092-24097 ◽  
Author(s):  
Nan Li ◽  
Haoyuan Li ◽  
Yu Li ◽  
Shufeng Wang ◽  
Liduo Wang
Keyword(s):  
Solar Cell ◽  
Charge Transport ◽  
Spin Coating ◽  
Precursor Solution ◽  
Electron Injection ◽  
Mesoporous Structure ◽  
Coating Process ◽  
Transport Pathways ◽  
Spin Coating Process

By pre-spin-coating a perovskite precursor solution, increased perovskite capacity in the mesoporous structure, enhanced electron injection and more charge transport pathways are realized.

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