Spectroscopic Studies on the Effect of Some Ferrocene Derivatives in the Formation of Silver Nanoparticles

Abstract

Silver nanoparticles were prepared by microwave assisted method using silver nitrate as precursor in the presence of some ferrocene derivatives. The formation of the silver nanoparticles was monitored using UV-Vis spectroscopy. The UV-Vis spectroscopy revealed the formation of silver nanoparticles by exhibiting typical surface plasmon absorption band. The position of plasmon band (406-429 nm) was observed to depend on the nature of a particular ferrocene derivative used. TEM images indicated that the nanoparticles were spherical in shape and well-dispersed. Quantum dots (3.2 nm) were prepared by using ferrocenecarboxylic acid. The surface plasmon absorption band has shown red shift with increasing concentration of ferrocene derivative. For different duration of microwave heating time, intensity of absorption spectra in general was found to increase except in presence of ferrocene carbaldehyde where it decreased. Time-dependent spectra have indicated almost stable position of the surface plasmon band with increasing time of observation confirming that the as prepared silver nanoparticles did not aggregate with lapse of time.

Supramolecular Interactions between β-Cyclodextrin and the Nucleobase Derivatives of Ferrocene

“…The characteristic absorption maximum in the UV–vis spectra located at 435–442 nm confirmed the presence of the Fc unit in Fc-1–Fc-5 (for the UV–vis spectra, see Section S2). A change in the intensity of the absorption bands or the presence of the new features in the Fourier-transform infrared spectroscopy (FT-IR) spectra of the products confirmed the formation of triazole- or ester-type linkages (see the discussion section in Section S3).…”