Porphyrazines with Annulated Diazepine Rings. 2. Alternative Synthetic Route to Tetrakis-2,3-(5,7-diphenyl-1,4-diazepino)porphyrazines:  New Metal Complexes, General Physicochemical Data, Ultraviolet−Visible Linear and Optical Limiting Behavior, and Electrochemical and Spectroelectrochemical Properties

2003 ◽  
Vol 125 (46) ◽  
pp. 14190-14204 ◽  
Author(s):  
Maria Pia Donzello ◽  
Danilo Dini ◽  
Giuseppe D'Arcangelo ◽  
Claudio Ercolani ◽  
Riqiang Zhan ◽  
...  
2011 ◽  
Vol 11 (3) ◽  
pp. 860-864 ◽  
Author(s):  
S. Dhanuskodi ◽  
T.C. Sabari Girisun ◽  
S. Vinitha

2009 ◽  
Vol 2009 (5) ◽  
pp. 277-282 ◽  
Author(s):  
Fouad Soliman ◽  
Ibrahim Abd-Ellah ◽  
Soher Maigali ◽  
Gamal Abd-El-Naim

The reaction of Hg2+,Cd2+,Co2+, and Ni2+ ions with 1 mol of the ligands 2-methylquinoline-4-ol,3[(diethylamino)methyl]-2-methylquinoline-4-ol, and methyl-3-(4-hyrdoxy-2-methylquinoline-3-yl)-2-(triphenylphosphoranylidene)propanoate, has been investigated to give the corresponding 1:1 metal:ligand complexes. Reaction of 2 mol of the ligand gave the corresponding 1:2 metal:ligand complexes. The coordination takes place only through the quinoline nitrogen atom. The spectroscopic and the physicochemical data of the new metal complexes are discussed.


2020 ◽  
Vol 110 ◽  
pp. 110521
Author(s):  
Wei Li ◽  
Tingting Wang ◽  
Chan Zheng ◽  
Liheng Guo ◽  
Wenzhe Chen

1999 ◽  
Vol 82 (12) ◽  
pp. 2548-2551 ◽  
Author(s):  
P. Chen ◽  
X. Wu ◽  
X. Sun ◽  
J. Lin ◽  
W. Ji ◽  
...  

1999 ◽  
Vol 597 ◽  
Author(s):  
X. Sun ◽  
Y. N. Xiong ◽  
P. Chen ◽  
J. Y. Lin ◽  
W. Ji ◽  
...  

AbstractWe report an investigation into the mechanism responsible for the optical limiting behavior in multiwalled carbon nanotubes. We conducted energy-dependent transmission measurements, picosecond time-resolved pump-probe, and nonlinear scattering experiments at 532-nm wavelength on multiwalled carbon nanotube suspension. For comparison, C60-toluene solution and carbon black suspension were also studied in the same experiments. The similarities that we observed between the multiwalled carbon nanotubes and carbon black suspension suggest that nonlinear scattering, which is known to be responsible for the limiting action in carbon black suspension, should play an important role in the limiting effect in multiwalled carbon nanotubes.


2000 ◽  
Vol 09 (02) ◽  
pp. 217-225 ◽  
Author(s):  
P. SREERAMANA AITHAL ◽  
P. PREM KIRAN ◽  
D. NARAYANA RAO

Optical limiting characteristics of pure and 150 ppm Fe-doped Bi 12 SiO 20 (BSO:Fe) crystals are studied at high intensity nanosecond pulse regime. When the input light is at 532 nm and at 595 nm with 6 ns pulse duration, a good optical limiting behavior is observed due to simultaneous effect of trap assisted excited state absorption and two photon absorption. The precise role of the internal defects due to impurity centers present in the crystal lattice is explained on the basis of a four level model. This study reveal that the increased nonlinear absorption due to iron incorporation in BSO makes it an excellent passive optical limiter.


2020 ◽  
Vol 29 ◽  
pp. 1091-1097
Author(s):  
Jibi John ◽  
S.R. Chalana ◽  
V.P. Mahadevan Pillai ◽  
Jaison Joseph ◽  
S. Muthunatesan ◽  
...  

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