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  Characterization of an insoluble poly(9,9-diphenyl-2,7- fluorene) by solvent-free sample preparation for MALDI-TOF mass spectrometry

Trimpin, S., Grimsdale, A. C., Räder, H. J., & Müllen, K. (2002). Characterization of an insoluble poly(9,9-diphenyl-2,7- fluorene) by solvent-free sample preparation for MALDI-TOF mass spectrometry. Analytical Chemistry, 74(15), 3777-3782. doi:10.1021/ac0111863.

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 Urheber:
Trimpin, S.1, Autor           
Grimsdale, Andrew C.1, Autor           
Räder, Hans Joachim1, Autor           
Müllen, Klaus1, Autor           
Affiliations:
1MPI for Polymer Research, Max Planck Society, ou_1309545              

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 Zusammenfassung: The application of solvent-free sample preparation for matrix- assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) allowed the characterization of an insoluble fraction of poly(9,9-diphenylfluorene) that was previously hindered by the lack of suitable characterization methods. The MALDI mass spectrometric analysis gives valuable mechanistic information about the heterogeneous polymerization process of the insoluble high molecular weight fraction of the polymer. The fragmentation appearing even under moderate desorption and ionization conditions of this rigid backbone analyte is identified as a multiple loss of the bulky phenyl side groups and can be avoided by applying the new MALDI matrix 7,7,8,8-tetracyanoquinodimethane. A specialized fragmentation study by postsource decay MALDI-TOF MS reveals a molecular weight dependent change in fragmentation mechanism from an exclusive cleavage of side groups from long polymer chains to an additional cleavage of the polymer backbone of short polymer chains.

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 Datum: 2002-08-01
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Keine Begutachtung
 Identifikatoren: eDoc: 28658
ISI: 000177239200036
DOI: 10.1021/ac0111863
 Art des Abschluß: -

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Titel: Analytical Chemistry
  Kurztitel : Anal. Chem.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Washington, D.C. : American Chemical Society
Seiten: - Band / Heft: 74 (15) Artikelnummer: - Start- / Endseite: 3777 - 3782 Identifikator: ISSN: 0003-2700
CoNE: https://pure.mpg.de/cone/journals/resource/111032812862552