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Showing 1 to 12 of 283 entries
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The formation of host-guest complexes between surfactants and cyclodextrins.

Advances in colloid and interface science

Valente AJ, Söderman O.
PMID: 24011696
Adv Colloid Interface Sci. 2014 Mar;205:156-76. doi: 10.1016/j.cis.2013.08.001. Epub 2013 Aug 12.

Cyclodextrins are able to act as host molecules in supramolecular chemistry with applications ranging from pharmaceutics to detergency. Among guest molecules surfactants play an important role with both fundamental and practical applications. The formation of cyclodextrin/surfactant host-guest compounds leads...

Synthesis and Investigation of Novel Spiro-isoxazolines as Anti-Cancer Agents.

Tetrahedron letters

Das P, Omollo AO, Sitole LJ, McClendon E, Valente EJ, Raucher D, Walker LR, Hamme AT.
PMID: 25821250
Tetrahedron Lett. 2015 Apr 01;56(14):1794-1797. doi: 10.1016/j.tetlet.2015.02.059.

A series of structurally diverse 4-bromo spiro-isoxazolines possessing a variety of aromatic and aliphatic substituents at the 3 position, were synthesized through a 1,3-dipolar cycloaddition followed by intramolecular cyclization of a pendant hydroxyl or carboxylic acid group. The biochemical...

Self-assembled systems of water soluble metal 8-hydroxyquinolates with surfactants and conjugated polyelectrolytes.

Physical chemistry chemical physics : PCCP

Burrows HD, Costa T, Ramos ML, Valente AJ, Stewart B, Justino LL, Almeida AI, Catarina NL, Mallavia R, Knaapila M.
PMID: 26817700
Phys Chem Chem Phys. 2016 Jun 22;18(25):16629-40. doi: 10.1039/c5cp07085f.

We have studied the interaction of 8-hydroxyquinoline-5-sulfonate (8-HQS) with the metal ions Al(iii) and Zn(ii) in aqueous solution in the presence of tetraalkylammonium surfactants using UV/vis absorption, fluorescence, NMR spectroscopy and electrical conductivity measurements, complemented by DFT calculations and...

cis-Tetracarbonylbis(tricyclohexylphosphine)molybdenum(0) and pentacarbonyl(tricyclohexylphosphine)molybdenum(0).

Acta crystallographica. Section C, Crystal structure communications

Cortes-Figueroa JE, Leon-Velazquez MS, Ramos J, Jasinski JP, Keene DA, Zubkowski JD, Valente EJ.
PMID: 11118979
Acta Crystallogr C. 2000 Dec;56:1435-7. doi: 10.1107/s0108270100013111.

In the present redetermination of the complex cis-tetracarbonylbis(tricyclohexylphosphine)molybdenum(0), (I), [Mo(C(18)H(33)P)(2)(CO)(4)] or cis-eta(1)-[P(C(6)H(11))(3)](2)Mo(CO)(4), the Mo atom has a distorted octahedral geometry with a large P-Mo-P angle of 104.8 (1) degrees. A strong trans influence on the carbonyls in (I) is...

Synthesis and Characterization of a Novel Green Cobalt Corrinoid.

Inorganic chemistry

Brown KL, Cheng S, Zubkowski JD, Valente EJ.
PMID: 11666775
Inorg Chem. 1996 Sep 11;35(19):5752. doi: 10.1021/ic960895+.

No abstract available.

Side Chain Entropy and the Activation of Organocobalamins for Carbon-Cobalt Bond Homolysis: Synthesis, Characterization, and Thermolysis of the Neopentyl Derivative of a Unique Cobalamin Analog Lacking a c Side Chain.

Inorganic chemistry

Brown KL, Cheng S, Zubkowski JD, Valente EJ.
PMID: 11669779
Inorg Chem. 1997 Apr 23;36(9):1772-1781. doi: 10.1021/ic961378u.

Hydrodeamination of the c-amino derivative, 5, of cyanocobalamin (CNCbl) with hydroxylamine-O-sulfonic acid in aqueous base leads to an extensively rearranged product instead of the c side chain truncated derivative, 1, expected from simple deamination. The rearranged product (CNCbl-8-butanamide) crystallizes...

Preparation and characterization of organotin-oxomolybdate coordination polymers and their use in sulfoxidation catalysis.

Chemistry (Weinheim an der Bergstrasse, Germany)

Abrantes M, Valente AA, Pillinger M, Gonçalves IS, Rocha J, Romão CC.
PMID: 12772283
Chemistry. 2003 Jun 16;9(12):2685-95. doi: 10.1002/chem.200204399.

The organotin-oxomolybdates [(R(3)Sn)(2)MoO(4)].n H(2)O (R=methyl, n-butyl, cyclohexyl, phenyl, benzyl) have been prepared and tested as catalysts for the oxidation of benzothiophene with aqueous hydrogen peroxide, at 35 degrees C and atmospheric pressure. In all cases, the 1,1-dioxide was the...

Effect of time and temperature of incubation of heparinized caprine blood on concentrations of progesterone detected in plasma.

Theriogenology

Navarro H, Zarco L, Ducoing A, Flores G, Valencia J.
PMID: 16726771
Theriogenology. 1990 Apr;33(4):749-55. doi: 10.1016/0093-691x(90)90810-g.

Blood samples from 12 pregnant does were collected in flasks containing heparin. Each sample was divided into 31 aliquots, the first of which was immediately centrifuged for plasma separation. Fifteen of the remaining aliquots from each goat were kept...

Visual lateralisation in quails (Coturnix coturnix).

Laterality

Valenti A, Sovrano VA, Zucca P, Vallortigara G.
PMID: 15513216
Laterality. 2003 Jan;8(1):67-78. doi: 10.1080/713754470.

Two-week-old quails (Coturnix coturnix) were trained to discriminate food grains scattered randomly on a background of small pebbles of similar size adhering to the floor and differing from the grains in texture and hue ("pebble floor task"). Quails tested...

Discovery of two young brown dwarfs in an eclipsing binary system.

Nature

Stassun KG, Mathieu RD, Valenti JA.
PMID: 16541067
Nature. 2006 Mar 16;440(7082):311-4. doi: 10.1038/nature04570.

Brown dwarfs are considered to be 'failed stars' in the sense that they are born with masses between the least massive stars (0.072 solar masses, M(o)) and the most massive planets (approximately 0.013M(o)); they therefore serve as a critical...

[Treatment of pulmonary tuberculosis outside the hospital & sanatorium].

Maroc medical

VALENSI AL, MOLINA C.
PMID: 13577049
Maroc Med. 1958 Jul;37(398):748-60.

No abstract available.

Interaction between the water soluble poly{1,4-phenylene-[9,9-bis(4-phenoxy butylsulfonate)]fluorene-2,7-diyl} copolymer and ionic surfactants followed by spectroscopic and conductivity measurements.

The journal of physical chemistry. B

Tapia MJ, Burrows HD, Valente AJ, Pradhan S, Scherf U, Lobo VM, Pina J, Seixas de Melo J.
PMID: 16853464
J Phys Chem B. 2005 Oct 20;109(41):19108-15. doi: 10.1021/jp052233o.

The interaction has been studied in aqueous solutions between a negatively charged conjugated polyelectrolyte poly{1,4-phenylene-[9,9-bis(4-phenoxybutylsulfonate)]fluorene-2,7-diyl} copolymer (PBS-PFP) and several cationic tetraalkylammonium surfactants with different structures (alkyl chain length, counterion, or double alkyl chain), with tetramethylammonium cations and with the...

Showing 1 to 12 of 283 entries