| Home | << 1 >> |
|
| Record | |||||
|---|---|---|---|---|---|
| Author | Lenaerts, J.; van Vaeck, L.; Gijbels, R. | ||||
| Title | Secondary ion formation of low molecular weight organic dyes in time-of-flight static secondary ion mass spectrometry | Type | A1 Journal article | ||
Year  |
2003 | Publication | Rapid communications in mass spectrometry | Abbreviated Journal | Rapid Commun Mass Sp |
| Volume | 17 | Issue | 18 | Pages | 2115-2124 |
| Keywords | A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
| Abstract | Time-of-flight static secondary ion mass spectrometry (TOF-S-SIMS) was used to characterize thin layers of oxy- and thiocarbocyanine dyes on Ag and Si. Apart from adduct ions a variety of structural fragment ions were detected for which a fragmentation pattern is proposed. Peak assignments were confirmed by comparing spectra of dyes with very similar structures. All secondary ions were assigned with a mass accuracy better than 50 ppm. The intensity of molecular ions as well as fragment ions has been studied as a function of the type of organic dye, the substrate, the layer thickness and the type of primary ion. A large yield difference of two orders of magnitude was observed between the precursor ions of cationic carbocyanine dyes and the protonated molecules of the anionic dyes. Fragment ions, on the other hand, yielded similar intensities for both types of dye. As the dye layers deposited on an Ag substrate yielded higher secondary ion intensities than those deposited on a Si substrate, the Ag metal clearly acts as a promoting agent for secondary ion formation. The effect was more pronounced for precursor signals than for fragment ions. The promoting effect decreased as the deposited layer thickness of the organic dye layer was increased. Copyright (C) 2003 John Wiley Sons, Ltd. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | London | Editor | ||
| Language | Wos | 000185230400014 | Publication Date | 2003-09-02 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0951-4198;1097-0231; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 1.998 | Times cited | 10 | Open Access | |
| Notes | Approved | Most recent IF: 1.998; 2003 IF: 2.789 | |||
| Call Number | UA @ lucian @ c:irua:104132 | Serial | 2958 | ||
| Permanent link to this record | |||||