The unexpected formation of [M - H]+ species during MALDI and dopant-free APPI MS analysis of novel antineoplastic curcumin analogues

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

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::37a7cf0e05cc223384f0ae4e3d705f2e
https://pubmed.ncbi.nlm.nih.gov/25395129

Laser desorption mass spectrometry of photopolymerized fullerene (C60) films

Autor: D. S. Cornett, I. J. Amster, P. C. Eklund, Michael A. Duncan, Apparao M. Rao

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

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::30148b4cf8cc86e2ac6b04a1d4013323
https://doi.org/10.1021/j100121a030

Photoinduced Polymerization of Solid C 60 Films

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

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::10e7ecbbca7499e32462197cd796d282
https://doi.org/10.1126/science.259.5097.955

Ion Mobility Mass Spectrometry-Based Disaccharide Analysis of Glycosaminoglycans.

Autor: Polewski L; Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195, Berlin, Altensteinstraße 23a, Germany.; Department of Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195, Berlin, Faradayweg 4-6, Germany., Moon E; Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195, Berlin, Altensteinstraße 23a, Germany., Zappe A; Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195, Berlin, Altensteinstraße 23a, Germany., Götze M; Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195, Berlin, Altensteinstraße 23a, Germany.; Department of Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195, Berlin, Faradayweg 4-6, Germany., Szekeres GP; Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195, Berlin, Altensteinstraße 23a, Germany.; Department of Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195, Berlin, Faradayweg 4-6, Germany., Roth C; Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces, 14195, Berlin, Arnimallee 22, Germany., Pagel K; Institute of Chemistry and Biochemistry, Freie Universität Berlin, 14195, Berlin, Altensteinstraße 23a, Germany.; Department of Molecular Physics, Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195, Berlin, Faradayweg 4-6, Germany.

Publikováno v: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2024 Jun 20; Vol. 30 (35), pp. e202400783. Date of Electronic Publication: 2024 May 23.

Spectroscopy of C60⁺ and C120⁺ in the mid-infrared.

Autor: Kappe, Miriam, Schiller, Arne, Gruber, Elisabeth, Jank, Dominik, Gatt, Michael, Schöpfer, Gabriel, Ončák, Milan, Ellis, Andrew M., Scheier, Paul

Publikováno v: Journal of Chemical Physics; 11/28/2023, Vol. 159 Issue 20, p1-7, 7p