Non-blinking dendritic crystals from C-dot solution
2015
Bio-imaging and drug carriers for delivery have created a huge demand for crystals. Crystals
are fascinating materials that have been grown for a long time but obtaining biocompatible
fluorescent crystals is a challenging task. We report on the growth of fluorescent crystals
using a carbon dot (C-dot) solution by a hydrothermal process. The crystallization pattern
of these C-dots exhibited a unique dendritic structure having a feather-like morphology. The
growth temperature and pressure were maintained at 60°C and 200 mmHg, respectively, for
crystal growth. A green fluorescence (under UV light) that was observed in the C-dot solution
was retained in the crystals formed from the solution. Cytotoxicity studies on Vero cells
revealed the crystals to be extremely biocompatible. These fluorescent crystals are extremely
well suited for biomedical and optoelectronic applications.
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