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Organic Nanowires (organic + nanowire)

Distribution by Scientific Domains
Polymers and Materials Science100%

Selected Abstracts

Photoconductivity of a Single Small-Molecule Organic Nanowire,

ADVANCED MATERIALS, Issue 12 2008
Xiujuan Zhang
The photoconductivity of a methyl squarylium (MeSq) single-nanowire device shows a high light sensitivity, wavelength-dependent photoresponse, good response speed, and excellent stability and reproducibility. Nanodevices fabricated on flexible substrates (see figure) exhibit good mechanical bendability and no obvious change in performance after bending to a curvature of 0.5,cm,1. [source]

Nanoscale Conducting Channels at the Surface of Organic Semiconductors Formed by Decoration of Molecular Steps with Self-Assembled Molecules

ADVANCED FUNCTIONAL MATERIALS, Issue 23 2009
Bumsu Lee
Abstract Under certain conditions, self-assembling molecules preferentially bind to molecular steps at the surface of crystalline organic semiconductors, inducing a strong local doping effect. This creates macroscopically long conducting paths of nanoscale width (a single crystalline analogue of organic nanowires) that can span distances of up to 1,cm between electrical contacts. The observed effect of molecular step decoration opens intriguing possibilities for visualization, passivation, and selective doping of surface and interfacial defects in organic electronic devices and provides a novel system for research on nanoscale charge transport in organic semiconductors. In addition, this effect sheds light on the microscopic origin of nucleation and growth of self-assembled monolayers at organic surfaces. It can also have implications in electronic patterning, nanoscale chemical sensors, integrated interconnects and charge-transfer interfaces in organic transistors and solar cells. [source]

Selective Patterned Growth of Single-Crystal Ag,TCNQ Nanowires for Devices by Vapor,Solid Chemical Reaction,

ADVANCED FUNCTIONAL MATERIALS, Issue 19 2008
Kai Xiao
Abstract We report the deterministic growth of individual single-crystal organic semiconductor nanowires of silver,tetracyanoquinodimethane (Ag,TCNQ) with high yield (>90%) by a vapor,solid chemical reaction process. Ag,metal films or patterned dots deposited onto substrates serve as chemical reaction centers and are completely consumed during the growth of the individual or multiple nanowires. Selective-area electron diffraction (SAED) revealed that the Ag,TCNQ nanowires grow preferentially along the strong ,,, stacking direction of Ag,TCNQ molecules. The vapor,solid chemical reaction process described here permits the growth of organic nanowires at lower temperatures than chemical vapor deposition (CVD) of inorganic nanowires. The single-crystal Ag,TCNQ nanowires are shown to act as memory switches with high on/off ratios, making them potentially useful in optical storage, ultrahigh-density nanoscale memory, and logic devices. [source]

Organic Nanowires: Connecting Organic Nanowires (Adv. Mater.

ADVANCED MATERIALS, Issue 47 2009
47/2009)
Single-crystal organic nanowires are destined to become essential components in near-future organic electronics, however, currently one of the main drawbacks preventing implementation is the difficulty of creating stable interconnections between the nanowires. On p. 4816, Ana Borras and co-workers present a universal and effective method of creating nanowire,nanowire and nanowire,metallic Ohmic connections. The inside cover image shows the connection of single-crystal metallo-phthalocyanine nanowires via silver nanoparticles. [source]