首 页  |  期刊简介  |  投稿须知  |  专家审稿  |  编者登陆  |  公告信息  |  联系我们
 
一组线性稠环芳香烃的等离激元激发
Plasmon Excitation in a Set of Linear Polycyclic Aromatic Hydrocarbons
摘要点击 70  全文点击 23  投稿时间:2018-04-07  修订日期:2018-05-18
查看全文  查看/发表评论  下载PDF阅读器
DOI编号  
中文关键词   含时密度泛函理论  稠环芳香烃  等离激元  诱导电荷
英文关键词   Time-dependent density functional theory  Polycyclic aromatic hydrocarbons  Plasmon  The induced charge
基金项目   国家自然科学基金(11464023);贵州省科技合作协议项目(黔科合LH字[2016]7316号);凯里学院规划项目(Z1126)
作者单位E-mail
陈广萍 凯里学院 729382834@qq.com 
尹海峰 凯里学院大数据学院 yinhaifeng1212@126.com 
岳莉 凯里学院理学院 wlydzgc@163.com 
中文摘要
    采用含时密度泛函理论,研究了一组线性稠环芳香烃量子点的等离激元激发.沿着线性稠环芳香烃所在的平面方向,体系中有两个主要的等离激元共振带:一个位于3.9eV附近;另一个位于16eV附近.随着线性稠环芳香烃长度的增加,在低能共振区,沿不同方向激发时,体系的吸收峰分别发生了蓝移和红移.此外,与并五苯相比,在低能共振区,一氯并五苯的吸收光谱的吸收峰发生了红移和展宽,其中氯原子位于并五苯的两端时对一氯并五苯等离激元激发影响较大.在低能共振区,线性稠环芳香烃的等离激元共振模式与石墨烯量子点相似.
英文摘要
    Time-dependent density functional theory has been used to investigate the plasmon excitation processes in a set of linear polycyclic aromatic hydrocarbons. Along the direction parallel to the linear polycyclic aromatic plane, there are two main plasmon bands, one around 3.9 eV and the other around 16 eV. In the low-energy resonance region, with the increase of the side length of the linear polycyclic aromatic hydrocarbons, the absorption peaks of the system are respectively blue-shifted and red-shifted along different excitation directions. Moreover, in the low-energy resonance region, compared with the pentacene, the photo absorption strength line of a chlorinated pentacene are red-shifted and greatly broadens.When the chlorine atoms at the both end of the pentacene, it make greatly influence to plasmon excitation of a chlorinated pentacene. In the low-energy resonance region, plasmon excitation in linear polycyclic aromatic hydrocarbons is similar to grapheme quantum dot.

您是第 2909890 位访客
版权所有 @ 2006《原子与分子物理学报》编辑部
通讯地址:四川省成都市武侯区四川大学收发服务中心378号信箱   邮编:610065
电话:3094757965  传真:  E-mail:jamp@scu.edu.cn
本系统由北京勤云科技发展有限公司设计