Self-Calibrating Property of Matrix-Assisted Laser-Desorption Ionization Time-of-Flight Spectra of Polymeric Materials (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Self-Calibrating Property of Matrix-Assisted Laser-Desorption Ionization Time-of-Flight Spectra of Polymeric Materials (Articolo in rivista) (literal)

Anno

• 1994-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1002/rcm.1290081215 (literal)

Alternative label

• MONTAUDO G, MONTAUDO MS, PUGLISI C, SAMPERI F, (1994)
  Self-Calibrating Property of Matrix-Assisted Laser-Desorption Ionization Time-of-Flight Spectra of Polymeric Materials
  in RCM. Rapid communications in mass spectrometry
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• MONTAUDO G, MONTAUDO MS, PUGLISI C, SAMPERI F, (literal)

Pagina inizio

• 981 (literal)

Pagina fine

• 984 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 8 (literal)

Rivista

• RCM. Rapid communications in mass spectrometry (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 4 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 12 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• polimeri (literal)

Titolo

• Self-Calibrating Property of Matrix-Assisted Laser-Desorption Ionization Time-of-Flight Spectra of Polymeric Materials (literal)

Abstract

• Abstract: A calibration procedure is introduced, which allows one to obtain absolute mass values in matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) spectra of polymeric materials, thus avoiding ambiguous mass assignments, The method consists in combining the observed times of flight in a function denoted as 'modified sum of squares' (SS2) and in finding the point of minimum for SS2. The procedure takes advantage of the finding that SS2 possesses an extremum property, i.e. it takes its minimum at theta, the mass of the first oligomer appearing in the MALDI-TOF spectrum, The method was tested by recording the MALDI-TOF spectrum of an aminolyzed Nylon 6 and of a glycolized poly(butyleneadipate) (PEA) sample. Nylon 6 was found to be made of a series of oligomers bearing diaminohexamethylene (DAHM) terminal groups. PEA is made of a series of oligomers with butyleneglycol end-groups. The intense peaks seen in the mass spectra are due to sodium-cationized ions, whereas the less-intense peaks are due to potassium-cationized ions. The function SS2 was built for the two samples and a point of minimum was found at the point theta=817.6 for Nylon 6 and at the point theta=713,6 for PBA. This finding allowed the interpretation of the mass spectra. (literal)

Prodotto di

• Istituto di chimica e tecnologia dei polimeri (ICTP) (Istituto)

Autore CNR

• FILIPPO SAMPERI (Persona)
• MAURIZIO MONTAUDO (Unità di personale interno)
• CONCETTO PUGLISI (Unità di personale interno)

Incoming links:

Autore CNR di

• FILIPPO SAMPERI (Persona)
• CONCETTO PUGLISI (Unità di personale interno)
• MAURIZIO MONTAUDO (Unità di personale interno)

Prodotto

• Istituto di chimica e tecnologia dei polimeri (ICTP) (Istituto)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• RCM. Rapid communications in mass spectrometry (Rivista)