Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Bernd Wehrle"'
Autor:
Christof Hoelger, Emanuel Vogel, L. Latanowicz, Hans-Heinrich Limbach, Bernd Wehrle, Uwe Langer
Publikováno v:
Journal of Physical Organic Chemistry. 13:23-34
Using high-resolution solid-state 15N cross-polarization magic angle spinning NMR techniques, the proton transfer thermodynamics and dynamics and the proton locations in polycrystalline 15N-labeled porphycene were studied. Whereas at room temperature
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16a2061bae8d27ac06015fdcf335184d
https://doi.org/10.1002/(sici)1099-1395(200001)13:1<23::aid-poc211>3.0.co
https://doi.org/10.1002/(sici)1099-1395(200001)13:1<23::aid-poc211>3.0.co
Autor:
Hans-Heinrich Limbach, Ernst Roessler, Christof-Gottfried Hoelger, Bernd Wehrle, Francisco Aguilar-Parrilla
Publikováno v:
The Journal of Physical Chemistry. 99:14271-14276
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbaf929d0a2ca4a549aa6dfb4e86e328
https://doi.org/10.1021/j100039a013
https://doi.org/10.1021/j100039a013
Autor:
Martin Schlabach, Bernd Wehrle, Martin Koecher, Emanuel Vogel, Juergen Braun, Han-Heinrich Limbach
Publikováno v:
Journal of the American Chemical Society. 116:6593-6604
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f764017c223e712c58747af1b8ad66f
https://doi.org/10.1021/ja00094a014
https://doi.org/10.1021/ja00094a014
Publikováno v:
The Journal of Physical Chemistry. 98:843-851
NMR relaxometry combined with high-resolution solid-state NMR techniques has been explored as a kinetic tool for the study of ultrafast proton transfers in solids. Rate constants of proton transfer are obtained in the milli- to nanosecond time scale
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb42846eaa08d0fc1fe6d36af9a40545
https://doi.org/10.1021/j100054a020
https://doi.org/10.1021/j100054a020
Publikováno v:
Zeolites. 13:291-298
AIPO 4 -5 samples were treated with NH 3 or NH 3 /CO mixtures at temperatures up to 1173 K. The samples were characterized by powder X-ray diffraction (XRD), infrared (i.r.) spectroscopy, and high-resolution solid-state nuclear magnetic resonance (n.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86b5b332e628b09da528ee12ae7a9b04
https://doi.org/10.1016/0144-2449(93)90008-q
https://doi.org/10.1016/0144-2449(93)90008-q
Autor:
Jürgen Braun, Helmut Rumpel, Gerd Scherer, Martin Schlabach, Bernd Wehrle, Hans-Heinrich Limbach
Publikováno v:
Berichte der Bunsengesellschaft für physikalische Chemie. 96:821-833
The liquid and solid state tautomerism of 5,10,15,20-tetraphenylporphyrin-15N4 (meso-tetraphenylporphyrin, TPP) has been studied by dynamic NMR spectroscopy and by NIR spectroscopy. The kinetic HH/HD/DD isotope effects on the liquid state tautomerism
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::747041fec61de94ff573515564d2730d
https://doi.org/10.1002/bbpc.19920960616
https://doi.org/10.1002/bbpc.19920960616
Publikováno v:
Synthetic Metals. 39:319-325
The chemical structure and reactions of the recently prepared conducting polymers polypyrrylenemethine (PPM) (H. Braunling and R. Becker, Ger. Offen. Patent Applic. No. 3 710 657 (Mar. 31, 1987)) and polyfurylenepyrrylenemethine (PFPM) have been stud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::958055f8487f9e1ed32cd7d6495c57f7
https://doi.org/10.1016/0379-6779(91)91758-3
https://doi.org/10.1016/0379-6779(91)91758-3
Publikováno v:
Synthetic Metals. 38:293-298
The chemical structure of polypyrrole (PPy) has been studied by 15N CPMAS NMR experiments on the 15N-labeled material. Only one broad line is found at about 120 ppm (external reference 15NH4Cl) which indicates that all nitrogen atoms of PPy are proto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::174b8558ddfd56aa5eb0fe7213408317
https://doi.org/10.1016/0379-6779(90)90082-v
https://doi.org/10.1016/0379-6779(90)90082-v
Publikováno v:
Journal of Magnetic Resonance (1969). 87:584-591
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7717d74fe819725b9e5c603b106f1a1d
https://doi.org/10.1016/0022-2364(90)90314-y
https://doi.org/10.1016/0022-2364(90)90314-y
Autor:
Hans-Heinrich Limbach, Bruno Chaudret, José Elguero, John A. S. Smith, Jürgen Braun, Ch. Hoelger, Hans Benedict, Gerd Buntkowsky, Ludger Meschede, Gerd Scherer, Francisco Aguilar-Parrilla, Wolf Peter Fehlhammer, Bernd Wehrle
Publikováno v:
AIP Conference Proceedings.
In this paper recent developments and results of dynamic high resolution NMR spectroscopy in the study of elementary steps of proton transfers in liquids and solids are reviewed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::644020c3e55acb98242c928b0210a58e
https://doi.org/10.1063/1.45383
https://doi.org/10.1063/1.45383