scholarly journals 1,3,5-Triaryl-1,3,5-Triazinane-2,4,6-Trithiones: Synthesis, Electronic Structure and Linear Optical Properties

Molecules ◽  
2020 ◽  
Vol 25 (22) ◽  
pp. 5475
Author(s):  
Ismaël Rabouel ◽  
Nicolas Richy ◽  
Anissa Amar ◽  
Abdou Boucekkine ◽  
Thierry Roisnel ◽  
...  

The synthesis of four new 1,3,5-triaryl-1,3,5-triazinane-2,4,6-trithione derivatives (thioisocyanurates) and two new partially thionated analogues from the corresponding 1,3,5-triaryl-1,3,5-triazinane-2,4,6-triones (isocyanurates) is reported, together with their spectroscopic properties. DFT calculations and comparison with the corresponding isocyanurates evidence the impact of the oxygen-for-sulfur replacement on the electronic structure and linear optical properties of these heterocycles. A bathochromic shift of the absorption bands and more efficient quenching of the fluorescence was observed.

2020 ◽  
Vol 126 (3) ◽  
Author(s):  
Mukhtar Hussain ◽  
Hugo Pires ◽  
Willem Boutu ◽  
Dominik Franz ◽  
Rana Nicolas ◽  
...  

2011 ◽  
Vol 22 (03) ◽  
pp. 263-269
Author(s):  
XIAOLI ZHANG ◽  
GUOREN ZHANG ◽  
TING JIA ◽  
YING GUO ◽  
ZHI ZENG

The electronic structure and linear optical properties of luminescent material EuKNaTaO5 are investigated by employing full-potential linear augmented plane wave method. Our results show highly localized Eu 4f states which pinned in the energy range below the unoccupied Ta 5d states and over the occupied O 2p states. The optical spectra are analyzed and interpreted in terms of the electronic structure. It is found that Eu ions absorb the major parts of the incident energy below 3.3 eV. This is in accordance with the experimental result that EuKNaTaO5 phosphor is efficient under the excitation of 535 nm (2.3 eV) visible part of the spectrum. The linear optical properties are found to be anisotropic.


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