Study on the relationship of chemical structure and order aggregation ability of polyimides: A molecular simulation approach

2008 ◽  
Vol 44 (2) ◽  
pp. 439-442 ◽  
Author(s):  
Rui Pan ◽  
Wei Zhao ◽  
Lin Song ◽  
Yi Gu
Keyword(s):  
Molecular Simulation ◽  
Chemical Structure ◽  
Simulation Approach ◽  
Relationship Of ◽  
The Relationship

The relationship of chemical structure of urea derivatives to antispasmodic activity

1979 ◽  
Vol 13 (5) ◽  
pp. 497-499
Author(s):  
A. G. Pechenkin ◽  
L. G. Tugnibidina ◽  
V. K. Gorshkova ◽  
L. A. Tikhonova
Keyword(s):  
Chemical Structure ◽  
Antispasmodic Activity ◽  
Urea Derivatives ◽  
Relationship Of ◽  
The Relationship

Identification of a reticuloendothelial stimulating agent in zymosan

1961 ◽  
Vol 200 (2) ◽  
pp. 297-300 ◽  
Author(s):  
S. J. Riggi ◽  
N. R. Di Luzio
Keyword(s):  
Cell Wall ◽  
Yeast Cell ◽  
Intravenous Injection ◽  
Functional Activity ◽  
Chemical Structure ◽  
Reticuloendothelial System ◽  
Yeast Cell Wall ◽  
Bound Lipids ◽  
Relationship Of ◽  
The Relationship

The functional activity of the reticuloendothelial system (RES), as determined by the intravascular clearance of colloidal carbon, and the degree of induced RE hyperplasia were studied following the intravenous injection of various constituents of zymosan. The readily extractable lipid component from the yeast cell wall was inactive, as was the polysaccharide, mannan. Stimulatory activity was still present in the zymosan residue after removal of free and bound lipids. The administration of glucan derived either from yeast, or its cell wall, resulted in marked RE activation and induced hyperplasia, demonstrating it to be the active RE stimulating agent. The relationship of glucan's chemical structure to its ability to induce RE hyperfunction and hyperplasia is discussed.

Energy level modulation of donor–acceptor alternating random conjugated copolymers for achieving high-performance polymer solar cells

2019 ◽  
Vol 7 (48) ◽  
pp. 15335-15343 ◽  
Author(s):  
Xi Liu ◽  
Wanyuan Deng ◽  
Junyi Wang ◽  
Ruiwen Zhang ◽  
Song Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
High Performance ◽  
Chemical Structure ◽  
Polymer Solar Cells ◽  
High Performance Polymer ◽  
Donor Acceptor ◽  
Relationship Of ◽  
The Relationship ◽  
Conjugated Copolymers

Fine energy level modulation without negatively affecting other properties is realized for random conjugated copolymers, allowing rigorous investigation of the relationship of the chemical structure and device performance in solar cells.

Discotische Flüssigkristalle: Beziehung zwischen Molekülstruktur und discogenen Eigenschaften scheibenförmiger Verbindungen, nicht-flüssigkristalline Ester des myo-Inosits und des Mytilits [1,2]

1985 ◽  
Vol 40 (7) ◽  
pp. 981-986 ◽  
Author(s):  
Bernd Kohne ◽  
Klaus Praefcke ◽  
Werner Stephan ◽  
Peter Nürnberg
Keyword(s):  
Chemical Structure ◽  
Liquid Crystalline ◽  
Methyl Group ◽  
Molecular Core ◽  
Relationship Of ◽  
The Relationship ◽  
Derivatives Of

Abstract A modified synthesis of mytilitol and the synthesis of various esters of the cyclitols myo-inositol (la) and mytilitol (2a) is described. Because of steric reasons all these derivatives of the two naturally occuring compounds exhibit no discotic mesophases. For instance, in comparison to mesomorphous scyllitol hexaesters already the methyl group perpendicular to the molecular core in the analogous hexaesters 2b-d of mytilitol suppresses discotic liquid crystalline character totally. This effect is discussed in connection to the relationship of mesomorphism with chemical structure of disc-shaped molecules.

The relationship of chemical structure to teratogenic activity among bisazo dyes: a re-evaluation

Development ◽  
1966 ◽  
Vol 16 (1) ◽  
pp. 29-39
Author(s):  
J. B. Lloyd ◽  
F. Beck
Keyword(s):  
Methylene Blue ◽  
Trypan Blue ◽  
Chemical Structure ◽  
Biological Effects ◽  
Negative Results ◽  
Sudan Iv ◽  
Relationship Of ◽  
The Relationship

Although the potency of trypan blue as a teratogenic agent in rodents has been known for almost twenty years the mechanism of its action remains obscure. The dye produces a variety of biological effects (see review by Beck & Lloyd, 1966) and most of these have at some time been suggested as possibly relevant to its teratogenicity. The investigation of such correlations would clearly be assisted by determining whether the biological effects of the dye are individually modified by small changes in its chemical structure, particularly if these changes also result in differences in its teratogenicity. The first teratological study of dyes related to trypan blue was made by Gillman, Gilbert, Spence & Gillman (1951), who obtained negative results in rats with six dyes (methylene blue, trypan red, Sudan IV, Bismarck brown, Niagara blue and sky blue), but gave no experimental details of their investigation.

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