Efficient approaches for molecular excited-state properties within the framework of time-dependent d

来源 :第十二届全国量子化学会议 | 被引量 : 0次 | 上传用户:zdbzdb
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  The time-dependent density functional theory(TDDFT)has become as an effective theoretical tool to calculate the excitation energies and Stokes shift of relatively large systems due to the implementation of analytical first geometrical derivatives of TDDFT excited-state energy [1,2,3] in some quantum chemistry packages.To develop the computationally efficient theoretical tools to obtain the vibrational frequencies,vibrational spectra,vibrationally-resolved electronic and Resonance Raman scattering spectroscopes as well as explore the excited-state potential surfaces,the analytical high-order energy derivatives of the excited states are required.In this talk,I will show you our groups efforts in the following two fields.One is to formulate the analytic second-order energy derivatives of TDDFT excited states for the molecules in gap phase [4,5] and condensed phase [6,7],and implement the algorithms into Q-CHEM software package.Another is to develop the time-dependent correlation function approaches for vibrationally-resolved electronic and resonance Raman spectroscopies with inclusion of Duschinsky rotation and Herzberg-Teller effects [8,9].Some benchmark tests and the applications to some realistic systems will be shown.By integrating the analytical energy derivatives approaches and the effective quantum dynamics approaches,I will show that the computational bottlenecks on the calculations of some molecular excited-state properties are breakdown.
其他文献
声乐训练是高师音乐教学中的重要课程,训练的是演唱者的演唱技能。声乐训练课程,不仅能够丰富学生的声乐理论知识,而且能够提高学生的声乐表演专业技能,同时还能使学生具备教学、
活性炭,作为一种多孔的炭材料,具有发达的空隙结构和较大的比表面积,其表面具有多种含氧官能团,再生效果好,是最古老的吸附剂,也被广泛应用做催化剂和催化剂载体。其应用领域