Investigation of the interaction of polypeptide functionalized gold nanoparticles with a luminescent conjugated oligothiophene

Abstract

Fabrication new nanostructures with the possibility of chemically alter and control their functionality is of<br><br>great interest in the development of novel functional materials and devices. The interaction of gold nanoparticles with a luminescent conjugated oligothiophenes (LCOs), p-HTMI, was investigated using UV-Vis spectroscopy, Dynamic light scattering and transmission electron microscopy (TEM). The peptide functionalized gold nanoparticles aggregate extensively in the presence of p-HTMI causing a massive red shift of the plasmon band, which indicated a large degree of aggregation as confirmed by DLS and TEM.