Figure 3: A)The time-dependent UV-Vis spectra of [email protected]: (a) pure AuNPs, (b-f) after mixing with 5-FU, b)10 mins, c) 30 mins, d) 2 hours, e) 4 hours, f) 6 hours, B) Time dependence for the shift of λmax of the plasmon coupling band for [email protected]