Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Michael J. Polce"'
Autor:
Michael J. Polce, Robert P. Lattimer
Publikováno v:
Journal of Analytical and Applied Pyrolysis. 92:355-360
Direct probe in vacuo chemical ionization (isobutane CI-MS) and Pyroprobe atmospheric pressure chemical ionization (APCI-MS) are complementary techniques for the analysis of polymeric materials. Both techniques can generally be used to detect residua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1018df98fef77e1c068e2b4f4ab81a70
https://doi.org/10.1016/j.jaap.2011.07.008
https://doi.org/10.1016/j.jaap.2011.07.008
Publikováno v:
Macromolecular Symposia. 308:68-76
Summary: The possible oligomerization of 1,1-diphenylethylene (DPE) in the end-capping reaction of poly(styryl)lithium (PSLi) was studied in hydrocarbon solvents using excess DPE (≤16 mol-eq); the effect of addition of THF (30 mol-eq Lewis base) an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0090c796cc177668a0c98aaa5da9f7ba
https://doi.org/10.1002/masy.201151010
https://doi.org/10.1002/masy.201151010
Autor:
Kittisak Chaicharoen, Michael J. Polce, Bryan C. Katzenmeyer, Nilüfer Solak, David E. Dabney, Chrys Wesdemiotis
Publikováno v:
Mass Spectrometry Reviews. 30:523-559
Tandem mass spectrometry (MS/MS) is increasingly applied to synthetic polymers to characterize chain-end or in-chain substituents, distinguish isobaric and isomeric species, and determine macromolecular connectivities and architectures. For confident
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44073be19066f5605018e465ae6deba8
https://doi.org/10.1002/mas.20282
https://doi.org/10.1002/mas.20282
Publikováno v:
Rubber Chemistry and Technology. 81:77-95
A new general functionalization methodology (GFM) is applied to the synthesis of trimethoxysilyl-functionalized polymers. This GFM involves (a) the preparation of a well-defined polymeric organolithium compound (PLi) using alkyllithium-initiated anio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42613d00fdd9df958fd4aafdda6331ce
https://doi.org/10.5254/1.3548199
https://doi.org/10.5254/1.3548199
Publikováno v:
Analytical Chemistry. 80:355-362
The Ag(+) adducts of polystyrene (PS) oligomers with different sizes (6-19 repeat units) and initiating (alpha) or terminating (omega) end groups mainly decompose via free radical chemistry pathways upon collisionally activated dissociation. This rea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1cd280074a49c8577bcf73f2c209ca8
https://doi.org/10.1021/ac701917x
https://doi.org/10.1021/ac701917x
Publikováno v:
International Journal of Mass Spectrometry. 267:30-42
Gas-phase cytosine molecules and cation–radicals represent a complex system of several nearly isoenergetic tautomers within each group. Computational methods differ in ordering the relative enthalpies of neutral cytosine tautomers. At our highest l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ff6de76dd5613f08df3d5eec03a1014
https://doi.org/10.1016/j.ijms.2007.02.016
https://doi.org/10.1016/j.ijms.2007.02.016
Publikováno v:
International Journal of Mass Spectrometry. 265:106-123
Cytosine cations were generated by chemical ionization and fast-atom bombardment of cytosine, and their dissociations in the gas phase were studied by tandem mass spectrometry and quantum chemistry calculations at levels of theory up to CCSD(T)/aug-c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::607ec34e6b5b7492a4f83db872679fcd
https://doi.org/10.1016/j.ijms.2007.01.013
https://doi.org/10.1016/j.ijms.2007.01.013
Functionalization of Poly(styryl)lithium with Thiiranes: Sulfur Extrusion vs Ring-Opening Mechanisms
Publikováno v:
Macromolecules. 40:2352-2360
Poly(styryl)lithiums (Mn = 1500−2200 g/mol) in benzene were reacted with propylene sulfide (1.3−3 equiv) to prepare the corresponding thiol chain-end-functionalized polymers. The resulting polymers were characterized by thin layer chromatography,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::011b12bafe23123e4aff2610602313f9
https://doi.org/10.1021/ma0628026
https://doi.org/10.1021/ma0628026
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 45:2161-2171
The chain-end-group composition was determined by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) analyses of low-molecular-weight polystyrene (PS) and poly(methyl methacrylate) (PMMA) produced by free-radi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51bc04105274a6671c2936150c59514e
https://doi.org/10.1002/pola.21982
https://doi.org/10.1002/pola.21982
Publikováno v:
Macromolecular Chemistry and Physics. 207:2280-2288
The reaction of excess poly(styryl)lithium mass spectrometry. The DEPT 13 C NMR spectrum showed (Mn = 1 400g · mol -1 ) with 1,3-butene diepoxide proceeds that a disecondary 1,2-diol unit was present, consistent with efficiently to produce a coupled
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8ecc20cd11f67e99b7ad7dfdab5fcbc
https://doi.org/10.1002/macp.200600453
https://doi.org/10.1002/macp.200600453