Figure 4
From: Large Scale Synthesis and Light Emitting Fibers of Tailor-Made Graphene Quantum Dots
(a) Photograph of freeze-dried GQD powders. Images of long GQD fibers taken up on a steel drum (diameter, 7 mm) under (b) low magnification and (c) high magnification. (d) GQDs fibers emitting a strong yellow light under UV lamp (365 nm). Optical microscopic images of blue GQD/PAA composite fibers entwisted with PAA fibers under (e) bright-field conditions and (f) UV illumination. Photographs of three strands of GQD yarn woven with a commercial cotton fabric under (g) white light and (h) UV irradiation. The white arrow in (e) points to the PAA fibers. (i) Photographs of a yellow GQD/PAA composite film under UV lamp (365 nm) and (inset) white light.
