Zobrazeno 1 - 10
of 12
pro vyhledávání: '"I. J. Amster"'
Autor:
L. Usher, Alejandro Cohen, Anas El-Aneed, I. J. Amster, Melissa J. Stoudemayer, Hanan Awad, R. M. Whittal, Jonathan R. Dimmock, Umashankar Das
Publikováno v:
Journal of Mass Spectrometry. 49:1139-1147
Unusual ionization behavior was observed with novel antineoplastic curcumin analogues during the positive ion mode of matrix-assisted laser desorption ionization (MALDI) and dopant-free atmospheric pressure photoionization (APPI). The tested compound
Autor:
H, Awad, M J, Stoudemayer, L, Usher, I J, Amster, A, Cohen, U, Das, R M, Whittal, J, Dimmock, A, El-Aneed
Publikováno v:
Journal of mass spectrometry : JMS. 49(11)
Unusual ionization behavior was observed with novel antineoplastic curcumin analogues during the positive ion mode of matrix-assisted laser desorption ionization (MALDI) and dopant-free atmospheric pressure photoionization (APPI). The tested compound
Autor:
P. C. Eklund, Apparao M. Rao, K. R. Subbaswamy, Kai-An Wang, Madhu Menon, I. J. Amster, D. S. Cornett, Michael A. Duncan
Publikováno v:
Chemical Physics Letters. 224:106-112
We report experimental evidence for the photopolymerization of C70 films under irradiation with visible or UV light. The tendency of C70 to dimerize is also confirmed by molecular dynamics calculations which find that the lowest energy dimer configur
Publikováno v:
The Journal of Physical Chemistry. 97:5036-5039
Laser desorption mass spectra are presented for thin films of C[sub 60] (pristine films) and photopolymerized C[sub 60] (transformed films). At the threshold energy for laser desorption, C[sub 60][sup +] is the only product of desorption/ ionization
Publikováno v:
ChemInform. 23
Autor:
I. J. Amster, Kai-An Wang, G. T. Hager, P. C. Eklund, Michael A. Duncan, Ying Wang, J. M. Holden, Xiang-Xin Bi, Apparao M. Rao, Ping Zhou, D. S. Cornett, W. T. Lee
Publikováno v:
Science. 259:955-957
We report experimental evidence for the photopolymerization of C7o films under irradiation with visible or UV fight. The tendency of C7o to dimerize is also confirmed by molecular dynamics calculations which find that the lowest energy dimer configur
Autor:
Archer D. Smith, Dennis R. Dean, Michael K. Johnson, K A Johnson, Jeffrey N. Agar, Jeverson Frazzon, I J Amster
Publikováno v:
Journal of the American Chemical Society. 123:11103-11104
Autor:
Robert B. Cody, Sahba. Ghaderi, Miguel E. Castro, I. J. Amster, D. H. Russell, Fred W. McLafferty
Publikováno v:
Analytical Chemistry. 58:483-485
An independent investigation is reported of the mass range of FTMS (Fourier-Transform mass spectroscopy) utilizing Cs DI to measure positive and negative cesium iodide cluster ions of masses as high as 16241 daltons, the present low frequency limit o
Publikováno v:
Analytical chemistry. 59(2)
Autor:
B.H. Wang, I. J. Amster, Brian T. Chait, Fred W. McLafferty, F.H. Field, Evan R. Williams, Joseph A. Loo, J.J.P. Furlong
Publikováno v:
Analytical chemistry. 59(14)
Plasma desorption (PD) such, as that induced by the 100-MeV fission products of /sup 252/Cf, is a particularly promising ionization method for large molecules, yielding molecular ion species even from trypsin, molecular weight 23,463. Further, with t