MALDI-TOF mass spectrometry in the analysis of synthetic polymers

Räder, Hans Joachim; Schrepp, W.

doi:10.1002/(sici)1521-4044(199806)49:6<272::aid-apol272>3.0.co;2-1

Cited by 205 publications

(183 citation statements)

References 63 publications

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“…Increasingly during recent years, laser desorption ionization mass spectrometry is being applied to polymer analysis [1][2][3][4]. Within this context, analysis of hydrocarbon polymers is one of the most challenging problems.…”

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confidence: 99%

Hydrocarbon polymer analysis by external MALDI fourier transform and reflectron time of flight mass spectrometry

Jaber

Wilkins

2005

J. Am. Soc. Mass Spectrom.

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The traditional solvent-based matrix-assisted laser desorption ionization (MALDI) preparation method has been used to analyze nonpolar polymers of various molecular weights. High resolution silver cationized oligomers with masses of up to 12 KDa were measured using 9.4 tesla Fourier transform mass spectrometry (FTMS) with an external ionization source. It was observed that when time-of-flight mass spectrometry was used, the spectra of polyethylene polymers showed abundant low mass fragment ions. However, these fragments were absent from the FTMS spectra. (J Am Soc Mass

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confidence: 99%

Hydrocarbon polymer analysis by external MALDI fourier transform and reflectron time of flight mass spectrometry

Jaber

Wilkins

2005

J. Am. Soc. Mass Spectrom.

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“…With proper matrix and cation selection, spectra can easily be obtained containing molecular ions, with or without cation adducts, of a wide range of common polymers such as poly(ethylene oxide) or polystyrene (PS) [1][2][3]. From the MALDI spectrum, one can usually determine the average molecular weight of the bulk sample and specific molecular weights of oligomers.…”

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confidence: 99%

Characterization and relative ionization efficiencies of end-functionalized polystyrenes by matrix-assisted laser desorption/ionization mass spectrometry

Cox

Johnston

Dasgupta

2003

J. Am. Soc. Mass Spectrom.

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The properties and relative ionization efficiencies of a series of polystyrenes (PS) with hydroxyl, hydrogen, tertiary amine, and quaternary amine end-functionalities were examined by matrix-assisted laser desorption/ionization (MALDI) time-of-flight (TOF) mass spectrometry (MS). The hydrogen and hydroxyl functionalized PS ionized via attachment of a single Ag ϩ cation, as expected. However, tertiary amine PS oligomers were found in (M Ϫ H) ϩ and (M ϩ H) ϩ forms, in addition to M ϩ Ag ϩ , while the quaternary amine PS oligomers only ionized to the M ϩ form. Analysis of tertiary amine PS spectra revealed varying ratios of the three ionic forms depending on the oligomer length, pointing to a change in ionization efficiency. When the bulk samples were compared, the quaternary amine end-functionalized PS gave a ten-fold higher ionization efficiency over all others studied, likely because of the preexisting charge on the functionality. Samples with hydroxyl and hydrogen functionalities had similar ionization efficiencies, with the tertiary amine slightly higher, depending on the molecular weight. Changes in molecular weight affected the relative ionization efficiencies in varying fashion depending on the end functionality, though average molecular weight measurements were largely unaffected by end-functionality. Quantification of end-functionalized polystyrenes with different ionization efficiencies was found to be possible if due care was taken. (J Am Soc Mass Spectrom 2003, 14, 648 -657)

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“…2 On the other hand, matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS) has been recognized as a powerful method which simply yields molecular ions without any fragmentation even for oligomeric organic compounds including natural macromolecules such as proteins and polysaccharides 3 and various synthetic polymers. [4][5][6][7][8] However, it is generally difficult to make quantitative analysis accurately by using MALDI-TOF-MS alone, especially for polydispersed samples, because the ionization efficiency of a given species differs considerably depending on its chemical structure and DP. 9,10 In such situations, it is often effective to analyze the oligomeric samples by combining multiple analytical methods complementarily.…”

Section: (Received October 22 2001; Accepted December 4 2001)mentioning

confidence: 99%

Characterization of Oligomeric Polypropyleneglycol Acrylate by GC, SFC and MALDI-TOF-MS

et al. 2002

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MALDI-TOF mass spectrometry in the analysis of synthetic polymers

Cited by 205 publications

References 63 publications

Hydrocarbon polymer analysis by external MALDI fourier transform and reflectron time of flight mass spectrometry

Hydrocarbon polymer analysis by external MALDI fourier transform and reflectron time of flight mass spectrometry

Characterization and relative ionization efficiencies of end-functionalized polystyrenes by matrix-assisted laser desorption/ionization mass spectrometry

Characterization of Oligomeric Polypropyleneglycol Acrylate by GC, SFC and MALDI-TOF-MS

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