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In-house synthesized poly(ether ether ketone) ionenes. I. ToF-SIMS spectra in the positive ion mode

Journal Article · · Surface Science Spectra
DOI:https://doi.org/10.1116/6.0003132· OSTI ID:2335873
 [1];  [1];  [2];  [1];  [1];  [2];  [1]
  1. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
  2. University of Alabama, Tuscaloosa, AL (United States)
+ Show Author Affiliations

Static time-of-flight secondary ion mass spectrometry (ToF-SIMS) was performed for acquiring the high-resolution surface spectra of four types of synthesized imidazolium ionene membranes. These novel membranes have aromatic ether–ketone–ether linkages inspired by poly(ether ether ketone) (PEEK). The PEEK-ionenes synthesized for this study have imidazolium cations placed in the polymeric backbone with bistriflimide [Tf2N]- counterions. The attention given to synthetically modified PEEK derivatives, such as PEEK-ionenes, is considerable due to their ability to selectively capture CO2 molecules and other light gases. Therefore, it is important to characterize the surface of these synthesized novel PEEK-ionenes. In this work, characteristic and unique peaks were identified in the positive spectra of each sample. The differences in mass spectra among the samples provide insights for optimizing or fine-tuning the PEEK-ionenes synthesis to achieve a high-performance CO2 separation membrane with enhanced permeability, selectivity, and mechanical stability. The SIMS spectra and identified characteristic peaks of these synthesized ionenes will serve as a reference in the positive mode, complementing the corresponding spectra reported in the negative ion mode (Paper II).

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB)
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
2335873
Report Number(s):
PNNL-SA--184766
Journal Information:
Surface Science Spectra, Journal Name: Surface Science Spectra Journal Issue: 1 Vol. 31; ISSN 1055-5269
Publisher:
American Vacuum Society - AIPCopyright Statement
Country of Publication:
United States
Language:
English

References (7)

Uncovering matrix effects on lipid analyses in MALDI imaging mass spectrometry experiments journal February 2020
The interfacial compatibility between a potential CO2 separation membrane and capture solvents journal March 2022
Spirobisindane-Containing Imidazolium Polyimide Ionene: Structural Design and Gas Separation Performance of “Ionic PIMs” journal May 2022
Poly(ether ether ketone) Ionenes: Ultrahigh-Performance Polymers Meet Ionic Liquids journal October 2022
Synthesis and Modification of Poly(ether ether ketone) and their Properties: A Review journal April 2012
In-house synthesized poly(ether ether ketone) ionenes. II. ToF-SIMS spectra in the negative ion mode journal February 2024
Poly(ether ether ketone) derivative membranes—a review of their preparation, properties and potential journal December 2009

Figures / Tables (1)

FIG. 1(p. 3)figure FIG. 1

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
chemical compounds
polymers
secondary ion mass spectrometry
thin films
time of flight mass spectrometry