Zobrazeno 1 - 10
of 15
pro vyhledávání: '"M. E. Brik"'
Publikováno v:
Scopus-Elsevier
Organic-inorganic nanocomposite gels comprising poly(ethyleneoxide) chains grafted between silica particles have been studied by electron paramagnetic and nuclear magnetic resonances. Motional heterogeneity has been investigated as a function of gela
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa2a4dd44b9ac56831b3d6e8220d2e91
https://doi.org/10.1002/(sici)1099-0488(19961115)34:15<2533::aid-polb1>3.0.co
https://doi.org/10.1002/(sici)1099-0488(19961115)34:15<2533::aid-polb1>3.0.co
Autor:
M. E. Brik
Publikováno v:
ChemInform. 22
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28916268ca9fae8ccd3950c9e3f24cb5
https://doi.org/10.1002/chin.199122150
https://doi.org/10.1002/chin.199122150
Autor:
M. E. Brik
Publikováno v:
Synthetic Communications. 20:3283-3287
This work reports a new mild reducing agents of 2,2,6,6-tetramethylpiperidine-1-oxyl (1) to hydroxylamine with a good yield. These compounds are: tetrahydroxy-1, 4-quinone (3), 2,5-dihydroxy- 4-benzoquinone (4) and rhodizonic acid (5).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3fc8932c3ab5e54cdce8fe043ee492b
https://doi.org/10.1080/00397919008051560
https://doi.org/10.1080/00397919008051560
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Letters. 146:125-133
Using radiolysis of chloroform /CHCl3/, 3,5-dibromo-4-oxo-2,2,6,6-tetramethyl-piperidin-1-oxyl /1/ is oxidized to its corresponding oxoammonium bromide /3/. The mechanism is a one electron oxidation forming the oxoammonium ion /3/ which is stabilized
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e2423ca26db3783fde9f82682fabef7
https://doi.org/10.1007/bf02164883
https://doi.org/10.1007/bf02164883
Autor:
M. E. Brik
Publikováno v:
Synthetic Communications. 20:1487-1495
The reaction of cis 3,5-dibromo-4-oxo-2,2,6,6-tetramethylpiperidin-1-oxyl (1) with polyamines provides a convenient and a short way to synthesize polynitroxides spin labels in a good yield where 3-carboxy-2,2,5,5-tetramethylpyrrolin-1-oxyl (3) is a n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be755dffa5efa1004575909e815fbdc0
https://doi.org/10.1080/00397919008052866
https://doi.org/10.1080/00397919008052866
Autor:
M. E. Brik
Publikováno v:
Synthetic Communications. 20:597-601
Selective preparation of cis-3,5-dibromo-4-oxo-2,2,6,6-tetramethylpiperidin-1-hydroxy (6) and in-situ oxidation of alcohols to ketones and aldehydes by oxoammonium bromide in acetic acid as solvent (5) are described.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6311f72b53aad08aa856f64fb63addbe
https://doi.org/10.1080/00397919008244909
https://doi.org/10.1080/00397919008244909
Publikováno v:
Scopus-Elsevier
The dynamical properties of hybrid materials obtained from mixtures of silicon alkoxides and polyethers are studied. Different techniques are used to analyze the mobility of the different parts of the material: thermal analysis (DSC, DTMA) and NMR to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2806e0637ed4fa633d244767dd3f6c3f
https://doi.org/10.1557/proc-346-937
https://doi.org/10.1557/proc-346-937
Autor:
M. E. Brik
Publikováno v:
ChemInform. 21
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b69ea720672b0406b96fc091cd91f4f2
https://doi.org/10.1002/chin.199051108
https://doi.org/10.1002/chin.199051108
Autor:
M. E. Brik
Publikováno v:
ChemInform. 21
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::736578d5414c1b95a872d30d821c8c28
https://doi.org/10.1002/chin.199035174
https://doi.org/10.1002/chin.199035174
Publikováno v:
Journal de radiologie. 71(2)
The most important paramagnetic contrast agents used in Nuclear Magnetic Resonance Imaging are limited to a few metal complexes such Gd-DTPA or stable free radicals such as nitroxides simply functionalized. We studied the biodistribution of new polyn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::5fee1c54f64dc4348364c8bfd624fe60
https://pubmed.ncbi.nlm.nih.gov/2157840
https://pubmed.ncbi.nlm.nih.gov/2157840