Search Results - "O'GARA, John E"

Characterization and Evaluation of C18 HPLC Stationary Phases Based on Ethyl-Bridged Hybrid Organic/Inorganic Particles by Wyndham, Kevin D, O'Gara, John E, Walter, Thomas H, Glose, Kenneth H, Lawrence, Nicole L, Alden, Bonnie A, Izzo, Gary S, Hudalla, Christopher J, Iraneta, Pamela C

“…The characterization and evaluation of three novel 5-μm HPLC column packings, prepared using ethyl-bridged hybrid organic/inorganic materials, is described…”
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Functionalization of divinylbenzene/ N-vinylpyrrolidone copolymer particles: Ion exchangers for solid phase extraction by Brousmiche, Darryl W., O’Gara, John E., Walsh, Daniel P., Lee, Peter J., Iraneta, Pamela C., Trammell, Brian C., Xu, Yuehong, Mallet, Claude R.

“…A series of four-mixed mode ion exchangers for SPE, consisting of either weak or strong cation or anion exchangers, have been synthesized by functionalization…”
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Porous Hybrid Organic-Inorganic Particles in Reversed-Phase Liquid Chromatography by O'Gara, John E., Wyndham, Kevin D.

“…Reversed-phase chromatographic media have recently become available that are based on porous hybrid organic-inorganic particles. The present paper reviews…”
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Selectivity in reversed-phase separations influence of the stationary phase by NEUE, Uwe D, O'GARA, John E, MENDEZ, Alberto

“…The selectivity difference between 15 different stationary phases was measured using a large number of analytes at 2 or 3 different pH values (3, 7 and 10)…”
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Systematic Study of Chromatographic Behavior vs Alkyl Chain Length for HPLC Bonded Phases Containing an Embedded Carbamate Group by O'Gara, John E, Walsh, Daniel P, Alden, Bonnie A, Casellini, Peter, Walter, Thomas H

“…A series of HPLC bonded phases containing an internal carbamate group were studied by changing the terminal N-alkyl group from C8H17 to C18H37 in increments of…”
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Dependence of cyano bonded phase hydrolytic stability on ligand structure and solution pH by O’Gara, John E, Alden, Bonnie A, Gendreau, Christina A, Iraneta, Pamela C, Walter, Thomas H

“…As part of our program to develop more stable cyano (CN) high-performance liquid chromatography (HPLC) column packings, we have evaluated hydrolytic stability…”
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Matrix-Isolation and ab Initio Molecular Orbital Study of 2,2,2-Trifluoroethylidene by O'Gara, John E, Dailey, William P

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Synthesis and Surface Chemistry of Spherical Mesoporous Organic−Inorganic Hybrid Particles with an Integrated Alcohol Functionality on the Pore Surface by Ding, Julia, Hudalla, Christopher J, Cook, James T, Walsh, Daniel P, Boissel, Cheryl E, Iraneta, Pamela C, O'Gara, John E

“…Novel mesoporous organic−inorganic spherical hybrid particles are described that contain a 3-hydroxypropyl organic functionality which is integral to the pore…”
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Simple preparation of a C8 HPLC stationary phase with an internal polar functional group by O'Gara, John E, Alden, Bonnie A, Walter, Thomas H, Petersen, John S, Niederlaender, Carsten L, Neue, Uwe D

“…A novel high performance liquid chromatography stationary phase that possesses an internal carbamate functional group is described. The reversed-phase material…”
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Direct observation, reactions under matrix-isolation conditions, and ab initio calculations for halo(trifluoromethyl)carbenes. Evidence for the photochemical addition of a carbene to dinitrogen by O'Gara, John E, Dailey, William P

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Functionalization of divinylbenzene/N-vinylpyrrolidone copolymer particles : Ion exchangers for solid phase extraction: Column Packings by BROUSMICHE, Darryl W, O'GARA, John E, WALSH, Daniel P, LEE, Peter J, IRANETA, Pamela C, TRAMRNELL, Brian C, YUEHONG XU, MALLET, Claude R

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Characterization and Evaluation of C 18 HPLC Stationary Phases Based on Ethyl-Bridged Hybrid Organic/Inorganic Particles by Wyndham, Kevin D., O'Gara, John E., Walter, Thomas H., Glose, Kenneth H., Lawrence, Nicole L., Alden, Bonnie A., Izzo, Gary S., Hudalla, Christopher J., Iraneta, Pamela C.

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Selectivity in reversed-phase separations by Neue, Uwe D., O’Gara, John E., Méndez, Alberto

“…The selectivity difference between 15 different stationary phases was measured using a large number of analytes at 2 or 3 different pH values (3, 7 and 10)…”
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