Table 4. Effect of UV Light (LED; λ = 365 nm) Intensity and Peptide Concentration on Peptide Grafting Yields onto NorChit-NP via TNPC^a.

grafting yield (%)
[model peptide] (mg/mL)	1 LED (35 mW/cm2)	2 LEDs in parallel (110 mW/cm2) superior: 35 mW/cm2 inferior: 75 mW/cm2	3 LEDs in series (105 mW/cm2) 35 mW/cm2 thrice
0.25	43	64	61
0.50	50	74	64

^aQuantification was performed using a fluorescent model peptide (CGGGGRGDSP; with a fluorescein isothiocyanate (FITC) tag). The reaction yield was measured indirectly by measuring the peptide-FITC levels (excitation wavelength of 485 nm and emission wavelength of 528 nm, Synergy Mx) in the peptide solution before and after reaction with NorChit-NP.