258
Systematic XPS and NEXAFS Studies of (Ter-)Pyridine-Terminated Self-Assembled Monolayers and their Addressability for Functional Supramolecules

T. Heinrich, E. Darlatt, A. Lippitz, S. Müller, C.A. Schalley, W.E.S. Unger – 2019

The chemical composition of functionalized supports is an important parameter that determines their performance in a broad range of applications, e.g. for immobilizing molecular machines. Pyridine-functionalized surfaces, for instance, are often used for the growth of SurMOF. In this article, a critical analysis of XPS (X-ray photoelectron spectroscopy) and NEXAFS (near edge X-ray absorption fine structure) data for pyridine-functionalized surfaces is presented in order to compile correlations that have been indiscernible before. Samples with aromatic backbones are compared to samples with aliphatic backbones. Furthermore, the pyridine head-groups are compared to terpyridine head-groups where the functional groups are diluted by unfunctionalized monolayer molecules to ensure well-ordered monolayers. Oxidation during ageing of the surfaces in air is also addressed. Moreover, the addressability of the samples for the deposition of metal ions and supramolecules is investigated and the samples are compared to each other. This work gives an overview of compiled data of pyridine-terminated monolayers and the underlying studies give a detailed insight into the capability of these monolayers to work as templates for the preparation of functional multilayers with well-ordered molecules exhibiting a preferential orientation. Furthermore, the data should help eliminating inconsistencies by establishing coherent information from a significant number of different pyridine-functionalized monolayers.

Title
258
Systematic XPS and NEXAFS Studies of (Ter-)Pyridine-Terminated Self-Assembled Monolayers and their Addressability for Functional Supramolecules
Author
T. Heinrich, E. Darlatt, A. Lippitz, S. Müller, C.A. Schalley, W.E.S. Unger
Date
2019-04-01
Identifier
DOI: 10.1016/j.elspec.2019.03.011
Source(s)
Citation
J. Electr. Spectr. Rel. Phen. 2019, 233, 28-37
Type
Text