A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1, Favorsky St., 664033, Irkutsk, Russia.
A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, 1, Favorsky St., 664033, Irkutsk, Russia.
Carbohydr Polym. 2017 Nov 1;175:18-26. doi: 10.1016/j.carbpol.2017.07.040. Epub 2017 Jul 18.
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.
新型水溶性手性等离子体纳米生物复合材料，其金含量可直接改变，通过一步氧化还原法在水中使用生物相容性多糖κ-卡拉胶（藻类的工业产品）作为还原和稳定基质合成。研究了反应物比例、温度和 pH 值对反应的影响，找到了最佳的反应参数。通过使用互补的物理化学方法 X 射线衍射分析、透射电子显微镜、电子顺磁共振光谱、原子吸收光谱和光学光谱、偏振法（包括手性多糖基质对金纳米粒子等离子体发色团的相间交叉考顿效应的旋光色散的光学旋转分散度）在固态和水溶液中检查了复合纳米材料的结构和性质，动态和静态光散射。新型多功能纳米复合材料表现出手性等离子体和磁性的复杂性质，这是由纳米粒子和富含自由基的手性多糖基质赋予的。
