𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Matrix-assisted Laser Desorption/Ionization of Synthetic Polymers with Azo Compound Matrices

✍ Scribed by H. M. Donny Liu; Urs P. Schlunegger


Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
591 KB
Volume
10
Category
Article
ISSN
0951-4198

No coin nor oath required. For personal study only.

✦ Synopsis


Sample preparation

All polymer samples were from commercial sources and used without further purification. PEG-2OOO dimethyl ether, PEG-4000, PEG-6000, PEG-10 OOO and PEG-35 OOO were purchased from Fluka (Buchs, Switzerland). The Polystyrene (PS) standards PS12500, PS/3700, PS/12500, PS35 OOO and polybutadiene (phenyl terminated) PB-1800 were all obtained from Aldrich (Buchs, Switzerland). The phenyl terminated polybutadiene


πŸ“œ SIMILAR VOLUMES


Infrared-matrix-assisted laser desorptio
✍ Steffen Weidner; Gerhard KΓΌhn; JΓΆrg Friedrich πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 696 KB

The application of an IR laser working at a wavelength of 3.27 mm, for matrix-assisted laser desorption/ ionization time-of-flight mass spectrometry and matrix-less laser desorption/ionization of different polymers, has been demonstrated. The ionization/desorption of polyethyleneglycols (PEG) and po

Proton Affinities of Eight Matrices Used
✍ Richard D. Burton; Clifford H. Watson; John R. Eyler; G. Lisa Lang; David H. Pow πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 83 KB πŸ‘ 2 views

Protonated molecules of analytes in matrix-assisted laser desorption/ionization (MALDI) are frequently the most intense ions observed, especially when the concentration of alkali metal cations is low. Examination of the laser desorption mass spectra of MALDI matrices usually shows the presence of bo

UV Optical Absorption of Matrices Used f
✍ D. A. Allwood; R. W. Dreyfus; I. K. Perera; P. E. Dyer πŸ“‚ Article πŸ“… 1996 πŸ› John Wiley and Sons 🌐 English βš– 473 KB πŸ‘ 2 views

Previous modelling of the matrix-assisted laser desorptiodionization (MALDI) process has had to rely on matrix solution optical absorptivities whereas the value for the solid phase is more appropriate. Absorption bands are usually broader for solids than for solutions due to the higher concentration

Matrix-assisted Laser Desorption/Ionizat
✍ Paola Bocchini; Guido C. Galletti; R. Seraglia; P. Traldi; S. Camarero; A. T. Ma πŸ“‚ Article πŸ“… 1996 πŸ› John Wiley and Sons 🌐 English βš– 375 KB πŸ‘ 2 views

Lignin is one of the components, with cellulose and hemicellulose, of cell walls in all terrestrial plants. Lignin is an amorphous, three-dimensional, polyphenolic molecule charged with the function of giving strength and impermeability to the plant structure. The determination of its molecular weig

Enhanced Cationization of Polymers Using
✍ Ian A. Mowat; Robert J. Donovan; Robert R. J. Maier πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 292 KB πŸ‘ 1 views

Cation attachment during matrix-assisted laser desorption/ionization (MALDI) of various synthetic polymers was investigated. The ions were created in a field-free source and extracted by a pulsed electric field applied at a known and variable time delay after the laser pulse. This is shown to increa