功能化核壳 Ag@TiO 纳米粒子用于增强拉曼光谱：Cu(ii)离子的灵敏检测方法。
Functionalized core-shell Ag@TiO nanoparticles for enhanced Raman spectroscopy: a sensitive detection method for Cu(ii) ions.
机构信息
Chimie Et Interdisciplinarité: Synthèse Analyse Modélisation (CEISAM), Université de Nantes, CNRS, UMR 6230, 2, rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France.
出版信息
Phys Chem Chem Phys. 2019 Feb 6;21(6):3066-3072. doi: 10.1039/c8cp07504b.
This paper demonstrates the use of surface plasmon resonance of core-shell Ag@TiO2 particles in SHINERS experiments. A copper(ii) complex grafted onto Ag@TiO2 surface was probed by Raman spectroscopy using resonance excitation profiles vs. excitation wavelengths (514, 633 and 785 nm) to tune the Raman signals. Enhancement factors of the SHINERS assembly have been estimated and compared to the SERS effect of unmodified silver NPs colloidal dispersions. Finally, the grafting of the copper(ii) complex onto Ag@TiO2 was advantageously compared to the grafting onto Ag@SiO2 shell.
本文展示了核壳 Ag@TiO2 粒子的表面等离子体共振在 SHINERS 实验中的应用。通过拉曼光谱，利用不同激发波长（514、633 和 785nm）的共振激发谱对 Ag@TiO2 表面接枝的铜(ii)配合物进行了探测，从而调谐拉曼信号。对 SHINERS 组件的增强因子进行了估计，并与未修饰的银纳米粒子胶体分散体的 SERS 效应进行了比较。最后，将铜(ii)配合物接枝到 Ag@TiO2 上的优势与接枝到 Ag@SiO2 壳上的优势进行了比较。
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