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Characterization of polymerizable surfactant vesicles by nuclear magnetic, absorbance and fluorescence spectroscopy
(1982)
The formation of vesicles and polymeric vesicles from unsaturated surfactants was discussed in regards to conditions for formation (sample size and sonication time), polymerization, substrate entrapment, hydroxide ion ...
The synthesis and characterization of arsenocholine and related compounds
(1982)
It has been known for 80 years, that arsenic is present in marine organisms in form of organic compounds. Only recently have some of these compounds been identified. Arsenobetaine, arsenocarbohydrates and dimethyl(2-hydr ...
Synthesis and evaluation of the biological activity of analogues of leupeptin
(1983)
Leupeptin, N-acetyl or N-propionyl-L-leucyl-L-leucyl-DL-argininal, is a potent inhibitor of trypsin-like enzymes; however, it is not selective within this proteolytic class. In an effort to increase selectivity among ...
The influence of metal-support interactions on the selectivities of cobalt catalysts for Co hydrogenation
(1984)
XPS studies for SiO(,2)-, TiO(,2)-, La(,2)O(,3)-, Eu(,2)O(,3)-, and CeIO(,2)-supported Co catalysts showed that surface properties of cobalt change markedly with variation in pretreatment conditions and supports. Strong ...
The characterization of catalytically active sites on lanthanum sesquioxide for olefin isomerization and hydrogenation
(1983)
The active sites on La(,2)O(,3) that are responsible for 1-butene isomerization are "acid-base" pair sites which are generated by the thermal removal of surface hydroxyls over the pretreatment temperatue range 400(DEGREES)C ...
Regiochemical and stereochemical studies of cationic pi-cyclizations
(1982)
Cationic (pi)-cyclization of allenyl alcohols 10a,b and allenyl ketones 11a,b provided evidence that the mode of ring closure of (gamma)-allenyl cationic systems is strongly dependent on the substitution pattern of the ...
The nature of the transition-metal carbonyl bond and molecular orbital calculations and ultraviolet photoelectron spectroscopy of hydrido transition-metal carbonyl clusters
(1981)
The interaction coordinates of chromium hexacarbonyl were quantitatively predicted by the overlap populations from Fenske-Hall molecular orbital (FHMO) calculations. The trans effect, in the interaction coordinates, was ...
The characterization and catalytic activity of molybdenum-Y zeolites
(1982)
The characterization of several molybdenum zeolites was facilitated using X-ray photoelectron spectroscopy. Samples prepared from the reaction of Mo(CO)(,6) with ultrastable zeolites exhibited superficially high concentrations ...
Reactions of lithium alkylalkenylamides
(1984)
The reactions of three lithium dialkylamides derived from N-alkyl-2-allylcyclohexylamine with several substrates which were potential one-electron acceptors were studied. These substrates were benzophenone, (E)-2-tert-bu ...
Speciation through evolved gas analysis using spectroscopic detection techniques
(1984)
Methods utilizing thermal separation and atomic emission detection which are capable of speciating inorganic compounds in solid samples are described. Inorganic samples are gradually heated to 2300(DEGREES)C in a graphite ...