Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Timothy J. Romack"'
Publikováno v:
Rapid Communications in Mass Spectrometry. 22:930-934
Electrospray ionization time-of-flight mass spectrometry (ESI-ToF-MS) has been successfully employed for the characterization of molecular weight, molecular weight distribution and end groups for bromine-terminated perfluoroalkyl acrylate oligomers p
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 44:4136-4141
The successful catalytic chain-transfer synthesis of 1,1,2,2-tetrahydroperfluoroalkyl methacrylate macromonomers with [bis(aqua)bis(difluoroboryl)dimethylglyoximato]cobalt(II) as a catalyst is reported. Fluoroalkyl methacrylate macromonomers were syn
Autor:
Richard J. Staples, Timothy J. Romack, Douglas X. West, Yu Li, John K. Swearingen, Jerry P. Jasinski, Issam S. Billeh
Publikováno v:
Journal of Molecular Structure. 570:129-136
The crystal structures of two 5-coordinate copper(II) complexes containing neutral, tridentate 2-formylpyridine N(4)-substituted thiosemicarbazones have been determined. 2-Formylpyridine N(4)-cyclohexylthiosemicarbazone, HFo4CHex coordinates via the
Autor:
Douglas E. Betts, Camille M. Kassis, Jack K. Steehler, Timothy J. Romack, Joseph M. DeSimone, Zhibin Guan, Richard W. Linton
Publikováno v:
Macromolecules. 29:3247-3254
X-ray photoelectron spectroscopy (XPS) has been used to investigate the surface characteristics of various novel fluorinated acrylate homopolymers [1,1-dihydroperfluorooctyl acrylate (PFOA), 1,1-di...
Autor:
Edward T. Samulski, J. B. McClain, J. R. Combes, E. E. Maury, Timothy J. Romack, David M. Pfund, John L. Fulton, Joseph M. DeSimone, Malcolm Capel
Publikováno v:
Langmuir. 11:4241-4249
Highly soluble amphiphilic materials are shown to form aggregates in supercritical CO{sub 2}. The strategy for synthesis of these amphiphilic molecules involves incorporating CO{sub 2}-philic segments that, for this study, are perfluorinated alkyl ch
Publikováno v:
Macromolecules. 28:912-915
We report the successful precipitation polymerization of acrylic acid in supercritical carbon dioxide at pressures ranging from 125 to 345 bar utilizing AIBN as a free radical initiator. Analyses by GPC and SEM indicate that for the pressure range st
Autor:
James B. Mcclain, Elise E. Maury, J. R. Combes, Timothy J. Romack, Yusuf Z. Menceloğlu, Joseph M. DeSimone
Publikováno v:
Science. 265:356-359
Conventional heterogeneous dispersion polymerizations of unsaturated monomers are performed in either aqueous or organic dispersing media with the addition of interfacially active agents to stabilize the colloidal dispersion that forms. Successful st
Publikováno v:
Inorganica Chimica Acta. 216:229-236
Cobalt(III) complexes of 2-acetyl- and 2-formylpyridine 4 N -methylthiosemicarbazone, [Co(L4M) 2 ]BF 4 and [Co(4M) 2 ]BF 4 , respectively, have been synthesized, their crystal structures solved and their spectral properties measured. The crystal stru
Publikováno v:
Transition Metal Chemistry. 17:256-259
Metal complexes of stoichiometries, [M(HLppz4M)X2] and [M(Lppz4M)X], are formed from nickel(II) and copper(II) halides and 2-acetylpyridine 3-(4-methyl)piperizinylthiosemicarbazone, HLppz4M. The [M(Lppz4M)X] complexes involve tridentate N(pyridyl), N
Publikováno v:
Macromolecules. 32:8224-8226