Controlled synthesis of organic single-crystalline nanowires via the synergy approach of the bottom-up/top-down processes

Nanoscale
Ming-Peng ZhuoLiang-Sheng Liao

Abstract

The controlled fabrication of organic single-crystalline nanowires (OSCNWs) with a uniform diameter in the nanoscale via the bottom-up approach, which is just based on weak intermolecular interaction, is a great challenge. Herein, we utilize the synergy approach of the bottom-up and the top-down processes to fabricate OSCNWs with diameters of 120 ± 10 nm through stepwise evolution processes. Specifically, the evolution processes vary from the self-assembled organic micro-rods with a quadrangular pyramid-like end-structure bounded with {111}s and {11-1}s crystal planes to the "top-down" synthesized organic micro-rods with the flat cross-sectional {002}s plane, to the organic micro-tubes with a wall thickness of ∼115 nm, and finally to the organic nanowires. Notably, the anisotropic etching process caused by the protic solvent molecules (such as ethanol) is crucial for the evolution of the morphology throughout the whole top-down process. Therefore, our demonstration opens a new avenue for the controlled-fabrication of organic nanowires, and also contributes to the development of nanowire-based organic optoelectronics such as organic nanowire lasers.

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Citations

Mar 21, 2018·Chemical Communications : Chem Comm·Yazhou QinJianguang Zhou

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Methods Mentioned

BETA
scanning
atomic force microscopy
transmission electron microscopy
X-ray
electron diffraction
Fluorescence microscopy

Software Mentioned

Materials
Studio

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