分子体系中光调控下的分子裁剪研究

项目名称： 分子体系中光调控下的分子裁剪研究

项目编号： No.11504374

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 韩清珍

作者单位： 中国科学院过程工程研究所

项目金额： 24万元

中文摘要： 废塑料中的聚烯烃和煤、石油等燃烧产生的稠环芳烃是当前环境污染的两大重要因素。实现聚烯烃和稠环芳烃的可控降解是彻底根治污染、绿色利用资源的最佳途径。光作为调控手段，具有选择性高和无污染的优点，已经被应用于许多物理化学过程的调控。因此，本项目拟选择聚烯烃和稠环芳烃为研究对象，理论和实验研究聚烯烃和稠环芳烃在光调控下的可控降解，主要内容包括：（1）研究聚烯烃的降解机理和光调控机制，考虑波长和光强等对产物结构分布的影响，提出聚烯烃高效可控降解的可行方法；（2）研究多种稠环芳烃失共轭态的产生机理和光调控机制，实现激光调控下稠环芳烃的可控分子裁剪。本项目的研究工作有利于深入理解聚烯烃和稠环芳烃等分子的降解机理和光调控机制，为根治聚烯烃和稠环芳烃导致的环境污染和实现碳资源的循环利用提供指导。

中文关键词： 电子空间分布；分子裁剪；激发态；反应机理；光调控

英文摘要： The polyolefins in waste plastics and the polyaromatic hydrocarbons (PAHs) generated by burning coal and oil are regarded as the two important factors leading to the current environment pollution. The controllable degradation of the polyolefins and the PAHs would be the best approaches used to completely control the pollution and recycle the resources. Light, as a manipulation means with high selectivity and less pollution, has been applied to control many physical and chemical processes. Here our project is focused on the polyolefins and the PAHs, and their controllable degradation under the manipulation of light will be studied theoretically and experimentally. The research contents mainly include: i) Study the mechanisms of the polyolefins degradation and the optical manipulation, consider the influences of light wavelength and intensity on the production distribution, and suggest a feasible method of the effective and controllable degradation for the polyolefins; ii) Study the generation mechanism of the conjugation-lost states of the PAHs and the optical manipulation, and further achieve the controllable molecular tailoring of the PAHs under the control of laser. The researches of the project are beneficial to deep understanding of the degradation of the polyolefins and the PAHs, and the mechanism of the optical manipulation, which will provide the theoretical and experimental guidance for bringing under control the environment pollution caused by the polyolefins and the PAHs, and also realizing the recycling of the carbon-related resources.

英文关键词： Spatial distribution of electron;Molecular tailoring;Excited state;Reaction mechanism;Optical manipulation