Scanning electron microscopy investigation of Cu–TCNQ micro/nanostructures synthesized via vapor-induced reaction method

Single‐Crystal Organic Nanowires of Copper–Tetracyanoquinodimethane: Synthesis, Patterning, Characterization, and Device Applications

“…[6] Bulk and thin-film forms of Cu-TCNQ have been widely studied, [7] and thus far various methods for the fabrication of Cu-TCNQ nanostructures have been reported, such as vacuum vapor deposition, [8] solution processes in organic solvents, [9] as well as chemical and electrochemical reduction of TCNQ in the presence of metallic Cu or Cu + ions. [10] However, the use of these techniques to fabricate micro-and nanoscale Cu-TCNQ structures have resulted in significant drawbacks with respect to the yield, size, phase, material multiplicity, production of high-density arrays, and ability to achieve patterned structures.…”

Directed Integration of Tetracyanoquinodimethane‐Cu Organic Nanowires into Prefabricated Device Architectures

“…Therefore, direct nanowire growth between prefabricated electrodes appears to be the most promising method for the fabrication of single-crystal organic nanowire devices. In this paper, we report a facile, low-temperature technique for the synthesis of single-crystal TCNQ-Cu organic nanowires between prefabricated electrodes by reactive chemical vapor deposition, [23,24] demonstrating the self-assembled integration of organic nanowires into devices. Compared to current synthesis processes for inorganic nanowires and carbon nanotubes, this method avoids the high temperatures that often damage pre-existing electrodes and other microelectronic components.…”

“…The TCNQ-Cu nanowires are grown by the reaction of TCNQ vapor with Cu via a selective VS reaction mechanism according to Equation 1. [23,24] Cu solid TCNQ vapor À 3…”

Single‐Crystal Organic Nanowires of Copper–Tetracyanoquinodimethane: Synthesis, Patterning, Characterization, and Device Applications

“…Copper–tetracyanoquinodimethane (Cu–TCNQ) is a widely studied organic semiconductor because of its capability for reversible, bistable switching of conductivity from a high to a low state through induction by an electric field or optical excitation 6. Bulk and thin‐film forms of Cu–TCNQ have been widely studied,7 and thus far various methods for the fabrication of Cu–TCNQ nanostructures have been reported, such as vacuum vapor deposition,8 solution processes in organic solvents,9 as well as chemical and electrochemical reduction of TCNQ in the presence of metallic Cu or Cu + ions 10. However, the use of these techniques to fabricate micro‐ and nanoscale Cu–TCNQ structures have resulted in significant drawbacks with respect to the yield, size, phase, material multiplicity, production of high‐density arrays, and ability to achieve patterned structures.…”