Chiroplasmonic magnetic gold nanocomposites produced by one-step aqueous method using κ-carrageenan

Marina V Lesnichaya; Boris G Sukhov; Galina P Aleksandrova; Ekaterina R Gasilova; Tamara I Vakul'skaya; Spartak S Khutsishvili; Anatoliy N Sapozhnikov; Igor V Klimenkov; Boris A Trofimov

doi:10.1016/j.carbpol.2017.07.040

Chiroplasmonic magnetic gold nanocomposites produced by one-step aqueous method using κ-carrageenan

Carbohydr Polym. 2017 Nov 1:175:18-26. doi: 10.1016/j.carbpol.2017.07.040. Epub 2017 Jul 18.

Authors

Marina V Lesnichaya¹, Boris G Sukhov², Galina P Aleksandrova², Ekaterina R Gasilova³, Tamara I Vakul'skaya², Spartak S Khutsishvili², Anatoliy N Sapozhnikov⁴, Igor V Klimenkov⁵, Boris A Trofimov²

Affiliations

¹ A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1, Favorsky St., 664033, Irkutsk, Russia. Electronic address: mlesnichaya@mail.ru.
² A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1, Favorsky St., 664033, Irkutsk, Russia.
³ Institute of Macromolecular Compounds, Russian Academy of Sciences, 31, Bolshoy pr., 199004, Saint-Petersburg, Russia.
⁴ A.P. Vinogradov Institute of Geochemistry, Siberian Branch, Russian Academy of Sciences, 1a, Favorsky St., 664033, Irkutsk, Russia.
⁵ Limnological Institute, Siberian Branch, Russian Academy of Sciences, 3, Ulan-Batorskaya St., 664033, Irkutsk, Russia.

PMID: 28917855
DOI: 10.1016/j.carbpol.2017.07.040

Abstract

Novel water-soluble chiroplasmonic nanobiocomposites with directly varied gold content were synthesized by a one-step redox method in water using a biocompatible polysaccharide κ-carrageenan (industrial product from algae) as both reducing and stabilizing matrix. The influence of the reactants ratio, temperature, and pH on the reaction was studied and the optimal reaction parameters were found. The structure and the properties of composite nanomaterials were examined in solid state and aqueous solutions by using complementary physical-chemical methods X-ray diffraction analysis, transmission electron microscopy, spectroscopy of electron paramagnetic resonance, atomic absorption and optical spectroscopy, polarimetry including optical rotatory dispersion with registration of interphase-crossbred Cotton effect of a chiral polysaccharide matrix on plasmonic chromophore of gold nanoparticles, dynamic and static light scattering. The new perspective multi-purpose nanocomposites demonstrate a complex of chiroplasmonic and magnetic properties, imparted by both nanoparticles and radicals enriched chiral polysaccharide matrix.

Keywords: Carrageenan- kappa PubChem CID: 11966249; Chiroplasmonic and magnetic properties; Chlorauric acid PubChem CID: 28133; Cotton effect; Gold nanoparticles; Sodium hydroxide PubChem CID: 14798; κ-carrageenan.