Photoinduced Excited-State Energy-Transfer Dynamics of a Nitrogen-Cored Symmetric Dendrimer: From the Perspective of the Jahn-Teller Effect | |
Huang, Jing1,2,3; Du, Likai1,2,3; Wang, Jun1,2,3; Lan, Zhenggang1,2,3 | |
2015-04-09 | |
发表期刊 | JOURNAL OF PHYSICAL CHEMISTRY C |
卷号 | 119期号:14页码:7578-7589 |
摘要 | We report an interesting view to understand the ultrafast excited-state energy-transfer (EET) process in the D-3-symmetric dendrimer tris(4-ethynylphenyl)amine (TEPA) from the perspective of the well-known E circle times e Jahn-Teller (JT) effect. Upon excitation to two lowest excited states (S-1 and S-2) with doubly degenerate E symmetry, two sets of e vibrational modes, dihedral angle twist and strong pyramidalization near the nitrogen core, lead to the JT distortion and symmetry lowering. Through the excited-state dynamics simulation with the on-the-fly surface-hopping approach at the TDDFT level, we find that the system may either travel three equivalent minima of S-1 state or undergo the nonadiabatic transitions between S-1 and S-2 states. These motions induce the ultrafast EET among different branches and the reorientation of the transition dipole moments, finally leading to the ultrafast fluorescence anisotropy decay. This energy-transfer mechanism can provide some interesting insights on the excited-state dynamics of large dendrimers with three equivalent branches and transition metal complexes with C-3 symmetry. |
文章类型 | Article |
WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
DOI | 10.1021/jp512496z |
关键词[WOS] | SHAPED OLIGOFLUORENE-TRUXENE ; ENHANCED 2-PHOTON ABSORPTION ; CHARGE-TRANSFER INTERACTIONS ; TIME-RESOLVED SPECTROSCOPY ; MOLECULAR-DYNAMICS ; PHENYLACETYLENE DENDRIMERS ; MULTIBRANCHED STRUCTURES ; POLARIZATION ANISOTROPY ; FLUORESCENCE ANISOTROPY ; CONICAL INTERSECTIONS |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
WOS类目 | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
WOS记录号 | WOS:000352823300004 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.qibebt.ac.cn/handle/337004/6437 |
专题 | 蛋白质设计研究组 |
作者单位 | 1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biobased Mat, Qingdao 266101, Shandong, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao Key Lab Solar Energy Utilizat & Energy St, Qingdao 266101, Shandong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Huang, Jing,Du, Likai,Wang, Jun,et al. Photoinduced Excited-State Energy-Transfer Dynamics of a Nitrogen-Cored Symmetric Dendrimer: From the Perspective of the Jahn-Teller Effect[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2015,119(14):7578-7589. |
APA | Huang, Jing,Du, Likai,Wang, Jun,&Lan, Zhenggang.(2015).Photoinduced Excited-State Energy-Transfer Dynamics of a Nitrogen-Cored Symmetric Dendrimer: From the Perspective of the Jahn-Teller Effect.JOURNAL OF PHYSICAL CHEMISTRY C,119(14),7578-7589. |
MLA | Huang, Jing,et al."Photoinduced Excited-State Energy-Transfer Dynamics of a Nitrogen-Cored Symmetric Dendrimer: From the Perspective of the Jahn-Teller Effect".JOURNAL OF PHYSICAL CHEMISTRY C 119.14(2015):7578-7589. |
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