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Confined crystallization of spin-crossover nanoparticles in block-copolymer micelles

Title data

Göbel, Christoph ; Hils, Christian ; Drechsler, Markus ; Baabe, Dirk ; Greiner, Andreas ; Schmalz, Holger ; Weber, Birgit:
Confined crystallization of spin-crossover nanoparticles in block-copolymer micelles.
In: Angewandte Chemie International Edition. (2020) .
ISSN 1521-3773
DOI: https://doi.org/10.1002/anie.201914343

Abstract in another language

Nanoparticles of the spin‐crossover coordination polymer [FeL(bipy)]n were synthesized by confined crystallization within the core of polystyrene‐block‐poly(4‐vinylpyridine) (PS‐b‐P4VP) diblock copolymer micelles. The 4VP units in the micellar core act as coordination sites for the Fe complex. In the bulk material, the spin‐crossover nanoparticles in the core are well isolated from each other allowing thermal treatment without disintegration of their structure. During annealing above the glass transition temperature of the PS block, the transition temperature is shifted gradually to higher temperatures from the as‐synthesized product (T1/2↓=163 K and T1/2↑=170 K) to the annealed product (T1/2↓=203 K and T1/2↑=217 K) along with an increase in hysteresis width from 6 K to 14 K. Thus, the spin‐crossover properties can be shifted towards the properties of the related bulk material. The stability of the nanocomposite allows further processing, such as electrospinning from solution.

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 Inorganic Chemistry IV > Chair Inorganic Chemistry IV - Univ.-Prof. Dr. Birgit Weber
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 05 Feb 2020 11:19
Last Modified: 05 Feb 2020 11:19
URI: https://eref.uni-bayreuth.de/id/eprint/53672