“…developed agaric‐based N‐CQDs for cell imaging and demonstrated over 90% viability for HT 29 cells. [ 462 ] Moreover, blue, green, and red fluorescence were easily observed when excited by 405, 488, and 552 nm laser scanning confocal microscope, respectively, suggesting a high possibility of using agaric‐based N‐CQDs as a probe for live‐cell and tissue imaging. However, similar to GQDs, N‐CQDs will convert into g‐CNQDs by increasing nitrogen concentration in the framework.…”