Naslov
Adsorption mechanisms of RNA mononucleotides on silver nanoparticles

Autori
Miljanić, Snežana ; Dijanošić, Adriana ; Matić, Ivona

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
XXIV. International Conference on Raman Spectroscopy / Opfer, Britta ; Siegesmund, Daniel - Jena : Leibniz Institute of Photonic Tecnology, 2014, 171-171

Skup
XXIV. International Conference on Raman Spectroscopy

Mjesto i datum
Jena, Njemačka, 10.08.2014. - 15.08.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
RNA mononucleotides; Silver; Surface-enhanced Raman scattering

Sažetak
Surface-enhanced Raman scattering (SERS) of adenosine 5’-monophosphate (AMP), guanosine 5’-monophosphate (GMP), cytidine 5’-monophosphate (CMP) and uridine 5’-monophosphate (UMP) was obtained on a citrate-reduced silver colloid aggregated with sodium sulfate upon excitation with NIR radiation. Concentration dependent SERS spectra were dominated by vibrational bands of nucleic bases, revealing various adsorption mechanisms of RNA mononucleotides on the silver surface. For mononucleotides consisting of the purine bases, AMP and GMP, adsorption onto the silver nanoparticles through the larger six-membered ring was suggested, whereby two complexes with the silver surface were indicated for AMP, differing in involvement of the exocyclic amino group in bonding with the metal. The spectra of pyrimidine mononucleotides, CMP and UMP, implied position of the RNA building units with the carbonyl groups of the bases oriented towards the silver surface. Intense SERS bands observed in low wavenumber region supported chemical binding of all RNA mononucleotides with the silver nanoparticles.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA