Skip to content

Research at St Andrews

Electron-induced modification of self-assembled monolayers of aromatic carboxylic acids

Research output: Contribution to journalArticlepeer-review

DOI

Open Access Status

  • Embargoed (until 30/10/21)

Author(s)

Andika Asyuda, Rodrigo Ortiz de la Morena, Eric Sauter, Kelly Turner, Kirsty McDonald, Manfred Buck, Michael Zharnikov

School/Research organisations

Abstract

The effects of low-energy electrons on aromatic self-assembled monolayers (SAMs) with carboxylic acid (CA) docking groups were studied with a focus on the dose range below 5 mC/cm2. The SAMs were prepared on an underpotentially deposited Ag bilayer and comprised nonsubstituted and CA-substituted monolayers with a rod-like biphenyl backbone and a monolayer of a Y-shaped, CA-substituted molecule, 1,3,5-benzenetribenzoic acid (H3BTB), formed either as a single-component film or as a binary one by mixing with adamantane-CA (Ad-CA). X-ray photoelectron and near-edge X-ray absorption fine structure spectra suggest high proneness of the CA groups to electron irradiation at both SAM/substrate and SAM/ambient interfaces. Cleavage of the carboxylate-substrate bond results in substantial molecular desorption at the initial stage of irradiation until electron-induced cross-linking gradually takes over. The CA groups at the outer SAM interface undergo substantial chemical changes, indicating that they participate in the cross-linking chemistry. The electron-induced processes are accompanied by molecular reorientation. Disordering for the SAMs formed by the rod-like molecules is contrasted by the H3BTB-based systems where changes also occur but some molecular order is preserved as explained by a proposed model invoking conformational changes. In SAMs of H3BTB mixed with Ad-CA, the latter shows higher proneness to irradiation-induced desorption than the former, as well as an influence on the cross-linking chemistry. The results of the present study suggest that CA-based SAMs on Ag offer additional options for cross-linking in SAMs and, as exemplarily demonstrated by the generation of Cu patterns on structured H3BTB templates, can be efficiently used for lithography and nanofabrication.
Close

Details

Original languageEnglish
Pages (from-to)25107-25120
Number of pages14
JournalJournal of Physical Chemistry C
Volume124
Issue number45
Early online date30 Oct 2020
DOIs
Publication statusPublished - 12 Nov 2020

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Density functional theory study of Pd aggregation on a pyridine-terminated self-assembled monolayer

    Yao, Z., Buck, M. & Buehl, M., 17 Aug 2020, In: Chemistry - A European Journal. 26, 46, p. 10555-10563 10 p.

    Research output: Contribution to journalArticlepeer-review

  2. Carbon nanomembranes from aromatic carboxylate precursors

    Dementyev, P., Naberezhnyi, D., Westphal, M., Buck, M. & Golzhauser, A., 14 Apr 2020, In: ChemPhysChem. Early View, 7 p.

    Research output: Contribution to journalArticlepeer-review

  3. A deep blue B,N-doped heptacene emitter that shows both thermally activated delayed fluorescence and delayed fluorescence by triplet-triplet annihilation

    Madayanad Suresh, S., Duda, E., Hall, D., Yao, Z., Bagnich, S., Slawin, A. M. Z., Bässler, H., Beljonne, D., Buck, M., Olivier, Y., Köhler, A. & Zysman-Colman, E., 8 Apr 2020, In: Journal of the American Chemical Society. 142, 14, p. 6588–6599

    Research output: Contribution to journalArticlepeer-review

  4. Shape controlled assembly of carboxylic acids: formation of a binary monolayer by intercalation into molecular nanotunnels

    Ortiz de la Morena, R., Asyuda, A., Lu, H., Aitchison, H., Turner, K., Francis, S. M., Zharnikov, M. & Buck, M., 21 Feb 2020, In: Physical Chemistry Chemical Physics. 22, 7, p. 4205-4215 11 p.

    Research output: Contribution to journalArticlepeer-review

  5. Coordination controlled electrodeposition and patterning of layers of palladium/copper nanoparticles on top of a self-assembled monolayer

    She, Z., Yao, Z., Ménard, H., Tobish, S., Lahaye, D., Champness, N. R. & Buck, M., 15 Jul 2019, In: Nanoscale. Advance Article

    Research output: Contribution to journalArticlepeer-review

Related by journal

  1. Thermal dehydrofluorination of GaPO-34 revealed by NMR crystallography

    Dawson, D. M., Macfarlane, L. E., Amri, M., Walton, R. I. & Ashbrook, S. E., 24 Jan 2021, In: Journal of Physical Chemistry C. Articles ASAP

    Research output: Contribution to journalArticlepeer-review

  2. Phase distribution, composition and disorder in Y2(Hf,Sn)2O7 ceramics: insights from solid-state NMR spectroscopy and first-principles calculations

    Moran, R. F., Fernandes, A., Dawson, D. M., Sneddon, S., Gandy, A. S., Reeves-McLaren, N., Whittle, K. R. & Ashbrook, S. E., 9 Jul 2020, In: Journal of Physical Chemistry C. 124, 31, p. 17073–17084

    Research output: Contribution to journalArticlepeer-review

  3. Oligomerization of proline catalyzed by Ni on a Au(111) surface

    Seljamae-Green, R. T., Robinson, T., Fruchtl, H. A. & Baddeley, C. J., 18 Apr 2019, In: Journal of Physical Chemistry C. 123, 15, p. 9935-9943

    Research output: Contribution to journalArticlepeer-review

  4. Phonon-glass and heterogeneous electrical transport in A-site-deficient SrTiO3

    Popuri, S. R., Decourt, R., McNulty, J. A., Pollet, M., Fortes, A. D., Morrison, F. D., Senn, M. S. & Bos, J. W. G., 7 Mar 2019, In: Journal of Physical Chemistry C. 123, 9, p. 5198-5208 11 p.

    Research output: Contribution to journalArticlepeer-review

ID: 271330914

Top