In this work we demonstrate the use of peptide as a stable internal mass standard to obtain accurate mass measurements of infrared multiphoton dissociation (IRMPD) generated phosphorothioate oligonucleotide fragment ions. Because oligonucleotides are more readily dissociated in the gas phase by IRMP
✦ LIBER ✦
Study of the processing chemistry of polyimides with thermogravimetry/Fourier transform infrared/mass spectrometry techniques
✍ Scribed by Wei Xie; Rebecca Heltsley; Han-Xu Li; Charles Lee; Wei-Ping Pan
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 269 KB
- Volume
- 83
- Category
- Article
- ISSN
- 0021-8995
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## Abstract A Schiff base of gossypol with 3,6,9,12,15,18,21,24‐octaoxa‐pentacosylamine (GSOB) forms stable complexes with monovalent cations. This process of complex formation was studied by electrospray ionization–mass spectrometry, ^1^H‐NMR and Fourier transform infrared spectroscopy as well as