Table 2.

The intensity-averaged mean particle size and zeta potential of CsNPs, FITC-CsNPs, RBITC-CsNPs, and FRET-CsNPs (n=3)

NPs	Diameters		Zeta potential (mV)
	Mean particle size (nm)	Polydispersity index
CsNPs	241.3±20.8	0.23±0.03	22.52±0.34
FTIC-CsNPs	256.6±52.6	0.24±0.03	19.13±0.45
RBITC-CsNPs	267.2±48.1	0.22±0.01	19.34±0.21
FRET-CsNPs	255.0±40.6	0.23±0.02	19.81±0.50

Abbreviations: CsNPs, chitosan nanoparticles; FITC, fluorescein isothiocyanate; FRET, fluorescence resonance energy transfer; NPs, nanoparticles; RBITC, rhodamine B isothiocyanate.