J 2017

XPS depth profiling of derivatized amine and anhydride plasma polymers: Evidence of limitations of the derivatization approach

MANAKHOV, Anton; Miroslav MICHLÍČEK; Alexandre FELTEN; Jean-Jacques PIREAUX; David NEČAS et. al.

Základní údaje

Originální název

XPS depth profiling of derivatized amine and anhydride plasma polymers: Evidence of limitations of the derivatization approach

Autoři

MANAKHOV, Anton (643 Rusko, domácí); Miroslav MICHLÍČEK (203 Česká republika, domácí); Alexandre FELTEN (56 Belgie); Jean-Jacques PIREAUX (56 Belgie); David NEČAS (203 Česká republika, domácí) a Lenka ZAJÍČKOVÁ (203 Česká republika, garant, domácí)

Vydání

Applied Surface Science, AMSTERDAM, ELSEVIER SCIENCE BV, 2017, 0169-4332

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10403 Physical chemistry

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 4.439

Kód RIV

RIV/00216224:14740/17:00097541

Organizační jednotka

Středoevropský technologický institut

UT WoS

000389152900067

EID Scopus

2-s2.0-84994360855

Klíčová slova anglicky

XPS depth profiling; Surface reactions; Amine derivatization; TFBA; Plasma polymers

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 21. 3. 2018 10:53, Mgr. David Nečas, Ph.D.

Anotace

V originále

The quantitative analysis of the chemistry at the surface of functional plasma polymers is highly important for the optimization of their deposition conditions and, therefore, for their subsequent applications. The chemical derivatization of amine and carboxyl-anhydride layers is a well-known technique already applied by many researchers, notwithstanding the known drawback of the derivatization procedures like side or uncomplete reactions that could lead to "unreliable" results. In this work, X-ray photoelectron spectroscopy (XPS) combined with depth profiling with argon clusters is applied for the first time to study derivatized amine and carboxyl-anhydride plasma polymer layers. It revealed an additional important parameter affecting the derivatization reliability, namely the permeation of the derivatizing molecule through the target analysed layer, i.e. the composite effect of the probe molecule size and the layer porosity. Amine-rich films prepared by RF low pressure plasma polymerization of cyclopropylamine were derivatized with trifluoromethyl benzaldehide (TFBA) and it was observed by that the XPS-determined NH2 concentration depth profile is rapidly decreasing over top ten nanometers of the layer. The anhydride-rich films prepared by atmospheric plasma co-polymerization of maleic anhydride and C2H2 have been reacted with, parafluoroaniline and trifluoroethyl amine. The decrease of the F signal in top surface layer of the anhydride films derivatized by the "large" parafluoroaniline was observed similarly as for the amine films but the derivatization with the smaller trifluoroethylamine (TFEA) led to a more homogenous depth profile. The data analysis suggests that the size of the derivatizing molecule is the main factor, showing that the very limited permeation of the TFBA molecule can lead to underestimated densities of primary amines if the XPS analysis is solely carried out at a low take-off angle. In contrast, TFEA is found to be an efficient derivatization agent of anhydride groups with high permeability through the carboxyl-anhydride layer. (C) 2016 Elsevier B.V. All rights reserved.

Návaznosti

LQ1601, projekt VaV
Název: CEITEC 2020 (Akronym: CEITEC2020)
Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, CEITEC 2020