Substituent effects of meta and para alkyl groups on the charge transfer band in the UV spectrum of nitrobenzene

2010 ◽  
Vol 91 (8) ◽  
pp. 1002-1014 ◽  
Author(s):  
J. M. A. Baas ◽  
B. M. Wepster
1997 ◽  
Vol 104 (11) ◽  
pp. 705-708 ◽  
Author(s):  
H. Mizoguchi ◽  
H. Kawazoe ◽  
H. Hosono ◽  
S. Fujitsu

2016 ◽  
Vol 3 (10) ◽  
pp. 1500863 ◽  
Author(s):  
Yulia Krupskaya ◽  
Florian Rückerl ◽  
Martin Knupfer ◽  
Alberto F. Morpurgo

Author(s):  
Kaitao Yu ◽  
Lifang Wei ◽  
Jiaqi Shen

The series of luminescent materials of Eu3 +, Tb3 + doped Li2SrSiO4 were synthesized by a high-temperature solid-state method. The phase purity of the samples was measured by X-ray powder diffraction (XRD). The luminescent properties of the samples were studied by UV-visible excitation spectra and emission spectra The It is found that the strong absorption of Eu3 + doped Li2-xSr1-xEuxSiO4 is from the 250 ~ 290 nm charge transfer band of Eu3 + and the 7F0 → 5L6 absorption transition of 393 nm. The strongest emission of the emission spectra at 393 nm is 614 nm and 701 nm, respectively, from the 5D0 → 7F2 and 5D0 → 7F4 transitions of Eu3 +. Tb3 + doped sample Li2-xSr1-xTb xSiO4 excitation spectrum is mainly composed of Tb3 + ion fd transition and charge transfer band composed of broadband, the strongest absorption at 269 nm, the emission of the main emission of 5D4 → 7F5 transition (542 nm).


2010 ◽  
Vol 485 (1-3) ◽  
pp. 100-103 ◽  
Author(s):  
Yutaka Harima ◽  
Yasushi Ishiguro ◽  
Youhei Fujikawa ◽  
Takahiro Hashiguchi ◽  
Kenji Komaguchi ◽  
...  

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