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Synthesis of [Fe(L)(bipy)]n spin crossover nanoparticles using blockcopolymer micelles

Title data

Klimm, Ottokar ; Göbel, Christoph ; Rosenfeldt, Sabine ; Puchtler, Florian ; Miyajima, Nobuyoshi ; Marquardt, Katharina ; Drechsler, Markus ; Breu, Josef ; Förster, Stephan ; Weber, Birgit:
Synthesis of [Fe(L)(bipy)]n spin crossover nanoparticles using blockcopolymer micelles.
In: Nanoscale. Vol. 8 (19 October 2016) Issue 45 . - pp. 19058-19065.
ISSN 2040-3372
DOI: https://doi.org/10.1039/C6NR06330F

Abstract in another language

Nowadays there is a high demand for specialized functional materials for specific applications in sensors or biomedicine (e.g. fMRI). For their implementation in devices, nanostructuring and integration in a composite matrix are indispensable. Spin crossover complexes are a highly promising family of switchable materials where the switching process can be triggered by various external stimuli. In this work, the synthesis of nanoparticles of the spin crossover iron(ii) coordination polymer [Fe(L)(bipy)]n (with L = 1,2-phenylenebis(iminomethylidyne)bis(2,4-pentanedionato)(2-) and bipy = 4,4'-bipyridine) is described using polystyrene-poly-4-vinylprididine blockcopolymer micelles as the template defining the final size of the nanoparticle core. A control of the spin crossover properties can be achieved by precise tuning of the crystallinity of the coordination polymer via successive addition of the starting material Fe(L) and bipy. By this we were able to synthesize nanoparticles with a core size of 49 nm and a thermal hysteresis loop width of 8 K. This is, to the best of our knowledge, a completely new approach for the synthesis of nanoparticles of coordination polymers and should be easily transferable to other coordination polymers and networks. Furthermore, the use of blockcopolymers allows a further functionalization of the obtained nanoparticles by variation of the polymer blocks and an easy deposition of the composite material on surfaces via spin coating.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Anorganic Chemistry IV > Chair Anorganic Chemistry IV - Univ.-Prof. Dr. Birgit Weber
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bavarian Research Institute of Experimental Geochemistry and Geophysics - BGI
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Anorganic Chemistry IV
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
500 Science > 550 Earth sciences, geology
Date Deposited: 14 Jun 2017 11:32
Last Modified: 25 Jul 2017 11:34
URI: https://eref.uni-bayreuth.de/id/eprint/37539