Neighbour-sensitized near-infrared emission of new Nd(III) and Er(III) complexes with 1-(anthracene-2-yl)-4,4,4-trifluoro-1,3-butanedione

被引:12
|
作者
Kang, Jung-Soo [1 ,2 ]
Leung, Kam Tong [1 ,2 ]
Nah, Min-Kook [3 ]
Shin, Jung-Sik [3 ]
Kang, Myung-Hyun [3 ]
Shong, Bonggeun [3 ]
Kang, Jun-Gill [3 ,4 ]
Lee, Jisuk [5 ]
Sohn, Youngku [5 ]
机构
[1] Univ Waterloo, WATLab, Waterloo, ON N2L 3G1, Canada
[2] Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada
[3] Chungnam Natl Univ, Dept Chem, Daejeon 34134, South Korea
[4] Korea Inst Sci & Technol Informat, ReSEAT Program, Daejeon 34134, South Korea
[5] Yeungnam Univ, Dept Chem, Gyongsan 38541, Gyeongbuk, South Korea
基金
新加坡国家研究基金会;
关键词
UP-CONVERSION; CHARGE-TRANSFER; TRANSITIONS; (MLCT)-M-1; DOPANTS; STATES;
D O I
10.1039/c6nj00999a
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The photophysical properties of Nd(2-ATFB)(3) and Er(2-ATFB)(3) (2-ATFB = 1-(anthracene-2-yl)-4,4,4-trifluoro-1,3-butanedione) were investigated in various organic solvents. The Nd(III) and Er(III) complexes excited by near-UV light emitted near-infrared (NIR) emission from the lanthanide ions via energy transfer from the singlet excited states of the anthracene moiety to the resonance levels of the metal ions. The quantum yields of the sensitized NIR luminescence were estimated from the observed lifetimes of NIR luminescence. The efficiency of the sensitized NIR luminescence increased with increasing polarity of the solvent except for methanol: the OH group of methanol acted as a quencher. Quantum mechanical calculations were performed on the optimization of the model Gd(2-ATFB)(3) molecule and the configurational interaction singlet (CIS) using a coordinate 2-ATFB anion adapted from the optimized structure. The nature of the excited state of the 2-ATFB ligand as an energy donor in the complex was proposed.
引用
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页码:9702 / 9710
页数:9
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