Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Mark Henrichs"'
Autor:
David L. Ladd, P. Mark Henrichs
Publikováno v:
Synthetic Communications. 28:4143-4149
A procedure for the synthesis of monomethoxypoly(ethylene glycol) aldehydes from monomethoxypoly(ethylene glycol) tosylates is described. The tosylates are converted to aldehydes in high yield via treatment with disodium hydrogen phosphate and DMSO;
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5546b8a7ce59b5617fbb4009d7e959bc
https://doi.org/10.1080/00397919809458693
https://doi.org/10.1080/00397919809458693
Publikováno v:
Magnetic Resonance in Chemistry. 33:905-908
In the presence of chiral shift reagents the enantiotopic nuclei of a pair of enantiomers become diastereotopic and have the potential to give resolved NMR signals. Similarly, the enantiotopic nuclei within a meso isomer become diastereotopic in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38075e75ff654dfe864b2158419cfd13
https://doi.org/10.1002/mrc.1260331112
https://doi.org/10.1002/mrc.1260331112
Publikováno v:
Journal of the American Chemical Society. 117:2058-2066
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02e3541f8f8356fbd45c1636a74f6008
https://doi.org/10.1021/ja00112a020
https://doi.org/10.1021/ja00112a020
Autor:
Christine J. T. Landry, David M. Teegarden, Timothy Edward Long, P. Mark Henrichs, Ralph H. Colby, Michael R. Landry, Dennis J. Massa
Publikováno v:
Macromolecules. 26:6299-6307
The effect of polymer structure on blend miscibility with poly(vinylphenol) (PVPh) has been studied for a variety of polyesters that contain aromatic moieties in their backbone. In general, polyesters derived from aliphatic diols showed evidence of i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53176a7dc604cba0d31aab40084706af
https://doi.org/10.1021/ma00075a027
https://doi.org/10.1021/ma00075a027
Publikováno v:
Macromolecules. 24:4033-4037
Deuterium NMR spectroscopy shows that the aromatic rings in deuterated amorphous poly(phenylene sulfide) (PPS) undergo rapid 180 o flips at room temperature. Detailed analysis shows that any subsidiary motion that accompanies ring flipping involves r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7dd779c7bc6067e83570f7c342b24a70
https://doi.org/10.1021/ma00014a010
https://doi.org/10.1021/ma00014a010
Autor:
P. Mark Henrichs, V. A. Nicely
Publikováno v:
Macromolecules. 24:2506-2513
The line widths of the protonated aromatic carbons depended strongly on temperature. A motion that could cause such temperature-dependent line widths is ring flipping. The results are consistent with an activation energy of 8-9 kcal/mol. Three-fold r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::464d21315e46273f90ddf673855eaa12
https://doi.org/10.1021/ma00009a057
https://doi.org/10.1021/ma00009a057
Autor:
P. Mark Henrichs, Timothy Edward Long
Publikováno v:
Macromolecules. 24:55-60
Polystyrene containing deuterium in 10-20% of the center of the chain is examined between 380 and 470 K. The results suggest that deuterium NMR spectroscopy may not be as useful for the study of very slow reorientation in polymer melts as are forms o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bce3dee475eeb0673a17f8038626ee53
https://doi.org/10.1021/ma00001a009
https://doi.org/10.1021/ma00001a009
Autor:
P. Mark Henrichs, André Conjusteau, Ketan Mehta, Sergey A. Ermilov, Ron Lacewell, Alexander A. Oraevsky
Publikováno v:
SPIE Proceedings.
We have designed, fabricated and tested a new 128-channel laser optoacoustic imaging system (LOIS-128) for cancer diagnostics consisting of an acoustic probe with 128 PVDF transducers, a digital signal processor with 128 independent channels, and sof
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a86a8f7ba62bedcb6ecab8d9f1ca8e36
https://doi.org/10.1117/12.658158
https://doi.org/10.1117/12.658158
Publikováno v:
Biomedical Optical Spectroscopy and Diagnostics.
Reflectance (liposomes, intralipid, microparticles) and fluorescence (polymer- and cosmetic oil-tagged fluorescein and rhodamine) agents enhance contrast in real-time confocal images of skin in vivo. Quantitative analysis (signal versus contrast agen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6e807ca636b9ca5d590b3aae1510e4b
https://doi.org/10.1364/bosd.2000.mb1
https://doi.org/10.1364/bosd.2000.mb1
Autor:
Kenneth E. Kellar, Robert Hollister, Donna Wei, Jennifer Eck, P. Mark Henrichs, Seymour H. Koenig
Publikováno v:
Magnetic resonance in medicine. 38(5)
A series of linear copolymers of DTPA-class Gd3+ conjugates, linked by alpha, omega-alkyldiamides with a varying number (n) of methylenes separating the amide function, were synthesized. Surprisingly, their relaxivities at all fields increased with i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd12f835bdfcb1368704466b304fd01c
https://pubmed.ncbi.nlm.nih.gov/9358444
https://pubmed.ncbi.nlm.nih.gov/9358444