Journal
APPLIED SURFACE SCIENCE
Volume 443, Issue -, Pages 244-254Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2018.02.290
Keywords
Chemical derivatization; XPS; Trifluoroacetic anhydride; Amino group; Hydroxyl group; Polymer
Categories
Funding
- Austrian Research Promotion Agency FFG (under the scope of the programme Production of the Future (Project SPOK)
- Austrian Research Promotion Agency FFG (COMET programme)
- European Regional Development Fund
- State of Upper Austria (Project BIOCARB-K)
- COMET programme
Ask authors/readers for more resources
In the current work, chemical derivatization of amine (NH2) groups with trifluoroacetic anhydride (TFAA) as an analytical method to improve the information scope of X-ray photoelectron spectroscopy (XPS) is investigated. TFAA is known to successfully label hydroxyl (OH) groups. With the introduction of a newly developed gas-phase derivatization protocol conducted at ambient pressure and using a catalyst also NH2 groups can now efficiently be labelled with a high yield and without the formation of unwanted byproducts. By establishing a comprehensive and self-consistent database of reference binding energies for XPS a promising approach for distinguishing hydroxyl from amine groups is presented. The protocol was verified on different polymers, including poly(allylamine), poly(ethyleneimine), poly(vinylalcohol) and chitosan, the latter one containing both types of addressed chemical groups. (C) 2018 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available