Fabrication of Low Cost 1D CdSe Nanowires using Near-field Electrospinning


Well-aligned, 1D CdSe quantum dot (QD) fibers (0.3µm to 2.5µm) containing up to 20wt% fluorescent quantum dots (QDs) were prepared by near-field electrospinning (NFES) process. Electrospun solutions were prepared using PVAc as the matrix polymer, dimethyl formamide (DMF) solvent and colloidal QDs in chloroform (CHCl3). The diameter of the fibers decreased as the ratio of DMF/CHCl3 is varied. QDs showed good dispersion and a linear relationship between QD loading and fiber diameter, as determined by the morphology measurements taken using TEM and SEM, respectively. Fluorescence microscopy shows that there is light attenuation throughout the fibers. Results also show that the NFES process may be used as a method to create aligned, 1D fibers of QDs and potentially other nanofibers.

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Correspondence to Leroy Magwood.

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Magwood, L., Starly, B. Fabrication of Low Cost 1D CdSe Nanowires using Near-field Electrospinning. MRS Online Proceedings Library 1302, 9 (2011). https://doi.org/10.1557/opl.2011.378

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