Fingerprint multiplicity in MALDI-TOF mass spectrometry of copolymers

0428176 - ÚMCH 2015 RIV DE eng C - Konferenční příspěvek (zahraniční konf.)
Horský, Jiří - Walterová, Zuzana
Fingerprint multiplicity in MALDI-TOF mass spectrometry of copolymers.
Macromolecular Symposia. Weinheim: Wiley, 2014, Roč. 339, č. 1, s. 9-16. ISSN 1022-1360.
[European Symposium on Polymer Spectroscopy /19./ - ESOPS19. Prague Meeting on Macromolecules /77./. Prague (CZ), 07.07.2013-11.07.2013]
Institucionální podpora: RVO:61389013
Klíčová slova: composition * copolymers * distribution
Kód oboru RIV: CD - Makromolekulární chemie

Due to the limited resolution of matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, the assignment of binary-copolymer composition to the peak molecular weight observed in the spectrum is not unique. Consequently, several clusters, called fingerprints, appear on calculated 2-D distribution, but usually only one of them corresponds to the sample composition. The ambiguity in the assignment of the composition to peaks in mass spectra of binary copolymers was explained in the framework of number theory and several criteria for identification of the correct fingerprint were proposed. The results were applied in analysis of poly(propylene glycol)-b-poly(ethylene glycol)-block-poly(propylene glycol) triblock copolymer Reverse Pluronic 17R4.
Trvalý link: http://hdl.handle.net/11104/0236990