Combined ultrafast spectroscopic and TDDFT theoretical studies on dual fluorescence emissions promoted by ligand-to-metal charge transfer (LMCT) excited states of tungsten -containing organometallic complexes

被引：4

作者：

Liang, Yue ^{[1
]}

Guo, Yurong ^{[1
]}

Wang, Ye ^{[3
]}

Zhang, Song ^{[3
]}

Pan, Yu ^{[2
]}

Shi, Yanan ^{[1
]}

Wang, Yanan ^{[1
]}

Zhu, Lina ^{[1
]}

Jin, Bing ^{[3
]}

Sun, Yan ^{[1
]}

Zhang, Bing ^{[2
]}

Feng, Xia ^{[1
]}

Yuan, Minghu ^{[3
]}

Wang, Haiyuan ^{[1
]}

Zhao, Guangjiu ^{[1
]}

机构：

[1] Tianjin Univ, Natl Demonstrat Ctr Expt Chem & Chem Engn Educ, Natl Virtual Simulat Expt Teaching Ctr Chem & Che, Sch Sci,Tianjin Key Lab Mol Optoelect Sci,Dept Ch, Tianjin 300354, Peoples R China

[2] Dalian Univ Technol, Sch Petr & Chem Engn, State Key Lab Fine Chem, Panjin 124221, Peoples R China

[3] Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2020年 / 748卷 / 748期

基金：

中国国家自然科学基金;

关键词：

Dual fluorescence; Localized-on-ligand; Ligand-to-metal charge transfer; Tungsten-containing organometallic; Excited state; LIGHT-EMITTING-DIODES; TIME-RESOLVED FLUORESCENCE; PHOTOPHYSICAL PROPERTIES; TRANSIENT ABSORPTION; DYNAMICS; DECAY;

D O I：

10.1016/j.cplett.2020.137396

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, we first designed and synthesized two tungsten-containing organometallic complexes MeNOON and MeNOOO with novel dual fluorescence emissions. Moreover, the combined femtosecond ultrafast spectroscopy and time-dependent density functional theory (TDDFT) method has been performed to investigate the excited-state dynamics of MeNOON and MeNOOO complexes. It is distinctly demonstrated that dual fluorescence emissions of tungsten-containing organometallic complexes are originated from the localized-on-ligand (LL) and ligand-to-metal charge transfer (LMCT) excited states, respectively. Furthermore, the ultrafast LMCT process has been measured by the femtosecond spectroscopy.

引用

页数：6