Conjugation of gold with patuletin was confirmed by FT-IR and UV-visible spectroscopy and amount of patuletin conjugated to gold nanoparticles was found to be 63.2% by weight. 
FT-IR
Conjugation of gold with patuletin was confirmed by FT-IR and UV-visible spectroscopy and amount of patuletin conjugated to gold nanoparticles was found to be 63.2% by weight. 
UV-visible spectroscopy
Particle sizes were measured by atomic force microscopy (AFM) and were found to have a mean diameter of about 45 nm. 
AFM