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Showing 1 to 12 of 38 entries
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Reduction and control of domain spacing by additive inclusion: morphology and orientation effects of glycols on microphase separated PS-b-PEO.

Journal of colloid and interface science

Ghoshal T, Shaw MT, Holmes JD, Morris MA.
PMID: 25814102
J Colloid Interface Sci. 2015 Jul 15;450:141-150. doi: 10.1016/j.jcis.2015.03.022. Epub 2015 Mar 17.

Cylindrical phase polystyrene-b-polyethylene oxide (PS-b-PEO) block copolymer (BCP) was combined with lower molecular weight poly/ethylene glycols at different concentrations and their effect on the microphase separation of BCP thin films were studied. Well-ordered microphase separated, periodic nanostructures were realized...

Transport Properties of Cation Exchange Membranes in the Presence of Ether Compounds in Electrodialysis.

Journal of colloid and interface science

Sata T, Tanimoto M, Kawamura K, Matsusaki K.
PMID: 10534389
J Colloid Interface Sci. 1999 Nov 15;219(2):310-319. doi: 10.1006/jcis.1999.6482.

Ether compounds such as ethylene glycols with different molecular weights and crown ethers have good affinity to the cation exchange membranes, sulfonated styrene-divinylbenzene membrane (sodium ion form) and perfluorocarbon sodium sulfonate membrane. The impregnated amount of ethylene glycols in...

Solvophobically-driven oligo(ethylene glycol) helical foldamers. Synthesis, characterization, and complexation with ethane-1,2-diaminium.

The Journal of organic chemistry

Hou JL, Jia MX, Jiang XK, Li ZT, Chen GJ.
PMID: 15357580
J Org Chem. 2004 Sep 17;69(19):6228-37. doi: 10.1021/jo049420n.

Oligo(ethylene glycols) 1a-h, which are incorporated with one to eight 2,3-naphthylene units, respectively, have been synthesized and characterized. The conformational changes of the new oligomers have been investigated in chloroform-acetonitrile binary solvents by the UV-vis, (1)H NMR, and fluorescent...

First-principle DFT and MP2 modeling of infrared reflection-absorption spectra of oriented helical ethylene glycol oligomers.

The journal of physical chemistry. B

Malysheva L, Onipko A, Valiokas R, Liedberg B.
PMID: 16852649
J Phys Chem B. 2005 Jul 14;109(27):13221-7. doi: 10.1021/jp0503765.

First-principle modeling is used to obtain a comprehensive understanding of infrared reflection absorption (RA) spectra of helical oligo(ethylene glycol) (OEG) containing self-assembled monolayers (SAMs). Highly ordered SAMs of methyl-terminated 1-thiaoligo(ethylene glycols) [HS(CH2CH2O)(n)CH3, n = 5, 6] on gold recently...

Determination of end groups of synthetic polymers by matrix-assisted laser desorption/ionization:  high-energy collision-induced dissociation.

Analytical chemistry

Bottrill AR, Giannakopulos AE, Waterson C, Haddleton DM, Lee KS, Derrick PJ.
PMID: 21662872
Anal Chem. 1999 Sep 01;71(17):3637-41. doi: 10.1021/ac990523t.

Matrix-assisted laser desorption/ionization has been combined with high-energy collision-induced dissociation for the analysis of poly(ethylene glycols) with butanoyl, benzoyl and acetyl end groups, using novel technology comprising a magnetic-sector mass spectrometer and ion buncher with an in-line quadratic-field ion...

Formation of β-Lactoglobulin Self-Assemblies via Liquid-Liquid Phase Separation for Applications beyond the Biological Functions.

ACS applied materials & interfaces

Zhang TD, Deng X, Wang MY, Chen LL, Wang XT, Li CY, Shi WP, Lin WJ, Li Q, Pan W, Ni X, Pan T, Yin DC.
PMID: 34570465
ACS Appl Mater Interfaces. 2021 Oct 06;13(39):46391-46405. doi: 10.1021/acsami.1c14634. Epub 2021 Sep 27.

Proteins are like miracle machines, playing important roles in living organisms. They perform vital biofunctions by further combining together and/or with other biomacromolecules to form assemblies or condensates such as membraneless organelles. Therefore, studying the self-assembly of biomacromolecules is...

Hydrogen network fluctuations of associating liquids: dielectric relaxation of ethylene glycol oligomers and their mixtures with water.

The Journal of chemical physics

Hanke E, von Roden K, Kaatze U.
PMID: 16965029
J Chem Phys. 2006 Aug 28;125(8):084507. doi: 10.1063/1.2338315.

Complex dielectric spectra of ethylene glycol and of various derivatives as well as of mixtures of water with an ethylene glycol oligomer and with a poly(ethylene glycol) dimethyl ether oligomer have been measured. The spectra can be well represented...

The Structure of Nonionic Micelles in Less Polar Solvents.

Journal of colloid and interface science

Penfold J, Staples E, Tucker I, Cummins P.
PMID: 9028897
J Colloid Interface Sci. 1997 Jan 15;185(2):424-31. doi: 10.1006/jcis.1996.4633.

Small angle neutron scattering, SANS, has been used to investigate the structure and geometry of nonionic micelles of monododecyl octaethylene glycol C12EO8, monododecyl hexaethylene glycol C12EO6, and monohexadecyl octaethylene glycol C16EO8 in less polar solvents: mixed solvents of water...

Multidimensional analysis of poly(ethylene glycols) by size exclusion chromatography and dynamic surface tension detection.

Analytical chemistry

Miller KE, Bramanti E, Prazen BJ, Prezhdo M, Skogerboe KJ, Synovec RE.
PMID: 11008772
Anal Chem. 2000 Sep 15;72(18):4372-80. doi: 10.1021/ac000424b.

Substantial improvements in a multidimensional dynamic surface tension detector (DSTD) are presented. Rapid, online calibration and measurement of the dynamic surface tension for high-performance liquid chromatography separations is achieved. Dynamic surface tension is determined by measuring the differential pressure...

Poly(ethylene glycol)s as grinding additives in the mechanochemical preparation of highly functionalized 3,5-disubstituted hydantoins.

Beilstein journal of organic chemistry

Mascitti A, Lupacchini M, Guerra R, Taydakov I, Tonucci L, d'Alessandro N, Lamaty F, Martinez J, Colacino E.
PMID: 28179944
Beilstein J Org Chem. 2017 Jan 04;13:19-25. doi: 10.3762/bjoc.13.3. eCollection 2017.

The mechanochemical preparation of highly functionalized 3,5-disubstituted hydantoins was investigated in the presence of various poly(ethylene) glycols (PEGs), as safe grinding assisting agents (liquid-assisted grinding, LAG). A comparative study under dry-grinding conditions was also performed. The results showed that...

The orthogonal character of stationary phases for gas chromatography.

Journal of separation science

Poole SK, Poole CF.
PMID: 18306435
J Sep Sci. 2008 Apr;31(6):1118-23. doi: 10.1002/jssc.200700546.

A database of system constants for 32 open-tubular columns at 100 degrees C is used to identify stationary phases for obtaining a wide selectivity space in comprehensive GC. Three parameters based on the Euclidean distance (D-parameter) or vectors (d-parameter...

Separation of poly(ethylene glycols) into fractions by sequential liquid-liquid extraction.

Talanta

Tomaszewski K, Szymanski A, Lukaszewski Z.
PMID: 18967721
Talanta. 1999 Sep 13;50(2):299-306. doi: 10.1016/s0039-9140(99)00024-7.

Poly(ethylene glycols) (PEG) are the major metabolites of non-ionic surfactants (NS). Chains of PEG may be shortened due to further biodegradation. The separate determination of short- and long-chained PEG (SC- and LC-PEG) may be useful to control the biodegradation...

Showing 1 to 12 of 38 entries