Wang Ying, Li Fabing, Li Zhanlong, Sun Chenglin, Men Zhiwei
Opt Lett. 2019 Jul 15;44(14):3450-3453. doi: 10.1364/OL.44.003450.
Stimulated Raman scattering (SRS) of silicon quantum dots (Si QD) water solutions of different sizes (2 and 5 nm) are investigated using Nd:YAG laser. Since strong and weak hydrogen bonds are formed by the charge transfer between water molecules and Si QDs, two SRS peaks of OH stretching vibrations of Si QDs solutions are observed in the forward direction. Simultaneously, characteristic feature peaks related to the interaction between OH groups and excess electrons are obtained in the backward SRS of 2 nm Si QDs solutions. The excess electrons induce a strong electrostatic field, leading to the transformation from water to an ice-VIII structure.
使用Nd:YAG激光研究了不同尺寸（2纳米和5纳米）的硅量子点（Si QD）水溶液的受激拉曼散射（SRS）。由于水分子与Si QD之间通过电荷转移形成了强氢键和弱氢键，因此在正向观察到Si QD溶液的OH伸缩振动的两个SRS峰。同时，在2纳米Si QD溶液的反向SRS中获得了与OH基团和多余电子之间相互作用相关的特征峰。多余的电子会诱导一个强静电场，导致水转变为冰-VIII结构。
