scholarly journals SYNTHESIS OF FUNCTIONALIZED ENERGETIC QUATERNARY NITROGEN SALTS

2019 ◽  
Author(s):  
V. Tartakovsky ◽  
P. Bulatov ◽  
D. Vinogradov ◽  
E. Petrov
Keyword(s):  
Quaternary Nitrogen

Chromatography of quaternary nitrogen compounds on buffered cation-exchange resins

1963 ◽  
Vol 10 ◽  
pp. 432-438 ◽  
Author(s):  
D.D. Christianson ◽  
J.S. Wall ◽  
J.F. Cavins ◽  
R.J. Dimler
Keyword(s):  
Cation Exchange ◽  
Nitrogen Compounds ◽  
Quaternary Nitrogen ◽  
Cation Exchange Resins ◽  
Exchange Resins

Pseudopodium Induction by the Action of Quaternary Ammonium Ions on Amoeba Proteus

1969 ◽  
Vol 4 (1) ◽  
pp. 17-24
Author(s):  
J. E. BREWER ◽  
L. G. E. BELL
Keyword(s):  
Cell Membrane ◽  
Cell Surface ◽  
Quaternary Ammonium ◽  
Amoeba Proteus ◽  
Carboxyl Groups ◽  
Ammonium Ions ◽  
Quaternary Nitrogen ◽  
Quaternary Ammonium Ions ◽  
Ammonium Compounds ◽  
Long Chain

Some aliphatic long-chain quaternary ammonium compounds and choline derivatives have been examined for their ability to induce pseudopodia from Amoeba proteus. The reaction involved in pseudopodium induction is believed to be between the quaternary nitrogen cations and polysaccharides on the cell surface. Not all of the carboxyl groups of the polysaccharide are involved in this reaction. The mechanism of pseudopodium induction is discussed in terms of changes in the surface charge and the permeability of the cell membrane.

ChemInform Abstract: QUATERNARY NITROGEN HETEROCYCLES PART 7, REACTIONS OF SOME TRICYCLIC HETEROAROMATIC CATIONS IN BASIC SOLUTIONS

1974 ◽  
Vol 5 (23) ◽  
pp. no-no
Author(s):  
JOHN W. BUNTING ◽  
WILLIAM G. MEATHREL
Keyword(s):  
Nitrogen Heterocycles ◽  
Quaternary Nitrogen ◽  
Basic Solutions

Part II. Quaternary Nitrogen Compounds

1948 ◽  
Vol 18 (7) ◽  
pp. 403-415
Keyword(s):  
Nitrogen Compounds ◽  
Quaternary Nitrogen

Electron spectroscopy of quaternary nitrogen compounds

1971 ◽  
Vol 43 (6) ◽  
pp. 729-736 ◽  
Author(s):  
John J. Jack ◽  
David M. Hercules
Keyword(s):  
Electron Spectroscopy ◽  
Nitrogen Compounds ◽  
Quaternary Nitrogen

An unprecedented oxidised julolidine-BODIPY conjugate and its application in real-time ratiometric fluorescence sensing of sulfite

2019 ◽  
Vol 17 (31) ◽  
pp. 7360-7368 ◽  
Author(s):  
D. Sirbu ◽  
L. Zeng ◽  
P. G. Waddell ◽  
A. C. Benniston
Keyword(s):  
Real Time ◽  
White Light ◽  
Ratiometric Fluorescence ◽  
Fluorescence Sensing ◽  
Quaternary Nitrogen ◽  
Ratiometric Fluorescence Sensing

Reaction of a julolidine-based BODIPY compound with silver(i) ions in the presence of white light produced the oxidised julolidine version (OXJUL) containing a quaternary nitrogen.

THE METABOLISM OF THE ERYTHROCYTE: IX. DIPHOSPHOPYRIDINE NUCLEOTIDASE OF ERYTHROCYTES

1956 ◽  
Vol 34 (1) ◽  
pp. 46-60 ◽  
Author(s):  
S. G. A. Alivisatos ◽  
S. Kashket ◽  
O. F. Denstedt
Keyword(s):  
Ion Transport ◽  
External Medium ◽  
Nicotinamide Adenine ◽  
Rabbit Erythrocyte ◽  
Purine Derivatives ◽  
Quaternary Nitrogen ◽  
Enzyme Substrate ◽  
Adenylic Acid ◽  
Ph Range ◽  
Hydrolysis Of

The rabbit erythrocyte possesses an active DPN-ase which is firmly attached to the membrane of the cell. Evidently, the enzyme is oriented in the membrane in such a way as to be able to act upon DPN added to the external medium. The enzyme splits DPN at the bond linking the quaternary nitrogen of the nicotinamide moiety with the ribose component. Despite the release of an H+ ion during hydrolysis of DPN, the activity of the enzyme remains practically constant over the pH range from 4.5 to 10.0. DPN-ase also splits nicotinamide from TPN, but its affinity for the latter is only about one third of that for DPN. Nicotinamide, adenine, and the substituted purine derivatives theobromine, theophylline, and xanthine inhibit DPN-ase, while compounds such as ribose, adenylic acid, caffeine, and nembutal are without effect in this respect. Of all the substances tested theobromine proved to be the most powerful inhibitor. The mode of enzyme–substrate attachment and the possible involvement of DPN-ase in ion transport are discussed in the light of these findings.

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