Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2019 Dec 10:10:2440-2448.
doi: 10.3762/bjnano.10.234. eCollection 2019.

Self-assembly of a terbium(III) 1D coordination polymer on mica

Quentin Evrard  1 , Giuseppe Cucinotta  2 , Felix Houard  1 , Guillaume Calvez  1 , Yan Suffren  1 , Carole Daiguebonne  1 , Olivier Guillou  1 , Andrea Caneschi  3 , Matteo Mannini  2 , Kevin Bernot  1   4
Affiliations

Self-assembly of a terbium(III) 1D coordination polymer on mica

Quentin Evrard et al. Beilstein J Nanotechnol. .

Abstract

The terbium(III) ion is a particularly suitable candidate for the creation of surface-based magnetic and luminescent devices. In the present work, we report the epitaxial growth of needle-like objects composed of [Tb(hfac)3·2H2O] n (where hfac = hexafluoroacetylacetonate) polymeric units on muscovite mica, which is observed by atomic force microscopy. The needle-like shape mimics the structure observed in the crystalline bulk material. The growth of this molecular organization is assisted by water adsorption on the freshly air-cleaved muscovite mica. This deposition technique allows for the observation of a significant amount of nanochains grown along three preferential directions 60° apart from another. The magnetic properties and the luminescence of the nanochains can be detected without the need of surface-dedicated instrumentation. The intermediate value of the observed luminescence lifetime of the deposits (132 µs) compared to that of the bulk (375 µs) and the CHCl3 solution (13 µs) further reinforces the idea of water-induced growth.

Keywords: atomic force microscopy (AFM); luminescence; nanostructuration; polymer; self-assembly; surface; terbium complexes.

PubMed Disclaimer

Figures

Figure 1
Figure 1
Deposition of [Tb(hfac)3·2H2O]n on the mica substrate.
Figure 2
Figure 2
AFM topography images of [Tb(hfac)3·2H2O]n@mica (a) 30 minutes and (b) 1 day after deposition showing the presence on the surface of needle-like objects together with (c, d) the corresponding height profiles along the highlighted line.
Figure 3
Figure 3
Analysis of the AFM image shown in Figure 2b: (a) 2D-FFT analysis highlighting the three preferential directions of orientation of the needle-like objects, (b) distribution of the measured length values and (c) height values of the observed objects.
Figure 4
Figure 4
AFM images of [Tb(hfac)3·2H2O]n@mica taken in semi-contact mode consecutively in the same region of the sample. The needle-like chains disappear gradually with increasing number of AFM scans.
Figure 5
Figure 5
Comparison of the frequency dependence of the in-phase (filled circles) and the out-of-phase (empty circles) components of the magnetization of [Tb(hfac)3·2H2O]n (top) and [Tb(hfac)3·2H2O]n@mica (bottom) measured at 2 K for static fields from 0 Oe (red) to 6400 Oe (blue).
Figure 6
Figure 6
Excitation (red) and emission (black) spectra of bulk [Tb(hfac)3·2H2O] (top), 10−5 M Tb(hfac)3 in CHCl3 (middle) and [Tb(hfac)3·2H2O]n@mica (bottom).
Figure 7
Figure 7
Crystal structure of [Tb(hfac)3·2H2O]n [22] with H-bond network highlighted as blue dotted bonds (carbon: brown; oxygen: red; hydrogen: blue; fluorine atoms are omitted for clarity).
See this image and copyright information in PMC

References

    1. Lan Y, Klyatskaya S, Ruben M. Bis(phthalocyaninato) Lanthanide(III) Complexes – from Molecular Magnetism to Spintronic Devices. In: Layfield R A, editor. Lanthanides and Actinides in Molecular Magnetism. Weinheim, Germany: Wiley-VCH; 2015. pp. 223–292. - DOI
    1. Hirota E, Sakakima H, Inomata K. Giant Magneto-Resistance Devices. Berlin, Germany: Springer Berlin; 2002. - DOI
    1. Candini A, Klyatskaya S, Ruben M, Wernsdorfer W, Affronte M. Nano Lett. 2011;11:2634–2639. doi: 10.1021/nl2006142. - DOI - PubMed
    1. Raman K V, Kamerbeek A M, Mukherjee A, Atodiresei N, Sen T K, Lazić P, Caciuc V, Michel R, Stalke D, Mandal S K, et al. Nature. 2013;493(7433):509–513. doi: 10.1038/nature11719. - DOI - PubMed
    1. Eliseeva S V, Bünzli J-C G. Chem Soc Rev. 2010;39(1):189–227. doi: 10.1039/b905604c. - DOI - PubMed

LinkOut - more resources