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Table 1 Photophysical data for CDs (3.75 μg mL−1 in deionized water) before and after 0.5 M H2O2 treatment

From: Carbon Nanodots as Dual-Mode Nanosensors for Selective Detection of Hydrogen Peroxide

States λ em a (nm) τ b (ns) χ 2c QYd (%)
Before 450 7.96 0.999 5.5
Before 500 7.12 0.999
After 450 4.53 0.993 4.6
After 500 4.83 0.996
  1. aPL peak excited at 405 nm
  2. bPL lifetime
  3. cGoodness of fit
  4. dPL quantum yield excited at 365 nm