New Alternative Donor−Acceptor Arranged Poly(Aryleneethynylene)s and Their Related Compounds Composed of Five-Membered Electron-Accepting 1,3,4-Thiadiazole, 1,2,4-Triazole, or 3,4-Dinitrothiophene Units:  Synthesis, Packing Structure, and Optical Properties

2005 ◽  
Vol 38 (11) ◽  
pp. 4687-4697 ◽  
Author(s):  
Takuma Yasuda ◽  
Tatsuya Imase ◽  
Yoshiyuki Nakamura ◽  
Takakazu Yamamoto
ChemInform ◽  
2010 ◽  
Vol 26 (25) ◽  
pp. no-no
Author(s):  
M. G. HUTCHINGS ◽  
I. FERGUSON ◽  
D. J. MCGEEIN ◽  
J. O. MORLEY ◽  
J. ZYSS ◽  
...  

1999 ◽  
Vol 103 (50) ◽  
pp. 11016-11020 ◽  
Author(s):  
Gema Rojo ◽  
Fernando Agulló-López ◽  
José A. Campo ◽  
José V. Heras ◽  
Mercedes Cano

Molecules ◽  
2015 ◽  
Vol 20 (4) ◽  
pp. 5554-5565 ◽  
Author(s):  
Guanghong Ao ◽  
Zhengguo Xiao ◽  
Xuemin Qian ◽  
Zhongguo Li ◽  
Yuxiao Wang ◽  
...  

2020 ◽  
Vol 11 (1) ◽  
pp. 84-90 ◽  
Author(s):  
Ana Martinez

Drug addiction refers to an out-of-control and compulsive use of substances, which can reach epidemic magnitudes. It is a health concern throughout the world and has major economic impact. Dopamine receptor agonists and antagonists have been cited as molecular targets for the treatment of drug addiction. In this report, the main idea is to analyze the new D3R/D2R ligands that are proposed for the treatment of drug abuse, in terms of their electron donor/acceptor properties. Substances catalogued as agonists represent good electron donors, whereas antagonists represent good electron acceptors. HOMO and LUMO eigenvalues indicate that more energy is necessary to remove an electron from the antagonists, and likewise more energy is gained when antagonists accept an electron. The combination of two molecules (PF-592379 and PNU-177864) produces a new compound (PF-4363467) with properties that are intermediate. Irrespective of the characteristics of the receptor, the classification of ligands is important, in order to further understanding of the reaction mechanism of these compounds. This may help in the design of new molecules for the treatment of drug addiction.


2013 ◽  
Vol 4 (4) ◽  
pp. 1807 ◽  
Author(s):  
Bruno Grimm ◽  
Chad Risko ◽  
Jason D. Azoulay ◽  
Jean-Luc Brédas ◽  
Guillermo C. Bazan

2015 ◽  
Vol 137 (3) ◽  
pp. 1024-1027 ◽  
Author(s):  
Masaki Shimada ◽  
Yoshinori Yamanoi ◽  
Tomonori Matsushita ◽  
Takashi Kondo ◽  
Eiji Nishibori ◽  
...  

1994 ◽  
Vol 339 ◽  
Author(s):  
C. Wetzel ◽  
D. Volm ◽  
B. K. Meyer ◽  
K. Pressel ◽  
S. Nilsson ◽  
...  

ABSTRACTRecent progress in the growth of high quality 6H-SiC single crystals has led to an ideal substrate material for GaN epitaxial films. Nearly matching lattice constants of wurzite GaN to 6H-SiC in the hexagonal plane can reduce strain effects at the interface. We employed the sublimation sandwich method to grow single crystal layers at reasonable growth rates with free carrier concentrations of 2×1017 cm-3. Very sharp x-ray diffraction peaks of the GaN (0002) plane are obtained indicating the high quality of this system (Δ(2θ) < 0.1 degrees). These findings are directly reflected in the optical properties. The photoluminescence is dominated by a single sharp exciton line, impurity related donor acceptor transitions are seen with very weak intensities. However, at lower energies the internal luminescence transitions of the 3d transition metal ions Fe and V are observable. The incorporation of Fe is confirmed by electron paramagnetic resonance.


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