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Synthesis of Zn-based 1D and 2D coordination polymer nanoparticles in block copolymer micelles

Titelangaben

Göbel, Christoph ; Hörner, Gerald ; Greiner, Andreas ; Schmalz, Holger ; Weber, Birgit:
Synthesis of Zn-based 1D and 2D coordination polymer nanoparticles in block copolymer micelles.
In: Nanoscale Advances. Bd. 2 (2020) Heft 10 . - S. 4557-4565.
ISSN 2516-0230
DOI: https://doi.org/10.1039/D0NA00334D

Angaben zu Projekten

Projektfinanzierung: Bayerische Forschungsstiftung

Abstract

Nanoparticles of the 1D and 2D coordination polymers [Zn(OAc)2(bipy)]n and [Zn(TFA)2(bppa)2]n were prepared, employing polystyrene-block-poly(4-vinylpyridine) diblock copolymers with different weight fractions of the 4-vinylpyridine (4VP) block and comparable overall molecular weights of Mn ≈ 155 kg mol-1 as template (SV-15 and SV-42 with 15 and 42 wt% 4VP, respectively). [Zn(OAc)2(bipy)]n nanoparticles were successfully synthesized within the 4VP core of SV-42 micelles, showing a core size of Dcore = 47 ± 5 nm and a hydrodynamic diameter of Dh = 157 ± 46 nm, determined by transmission electron microscopy (TEM) and dynamic light scattering (DLS). The crystallinity of the composite is quite low, showing only low intensity reflexes in the powder X-ray diffraction (PXRD) pattern with the highest particle load. No indications for larger microcrystals were detected by scanning electron microscopy (SEM), proving the successful integration of the coordination polymer nanoparticles within the micellar cores. Nanocomposites of the 2D coordination network [Zn(TFA)2(bppa)2]n were synthesized using both diblock copolymers. The particle core sizes (from TEM) and hydrodynamic diameters (from DLS) correlate with the 4VP fraction of the micelles, resulting in Dcore = 46 ± 6 nm for SV-42 and 15 ± 2 nm for SV-15 and Dh = 340 ± 153 nm and 177 ± 57 nm, respectively. The successful synthesis was proven by PXRD and SEM images, confirming the absence of larger crystallites. Hence, it is possible to synthesize nanocomposites of Zn-based 1D and 2D coordination polymers by a direct approach utilizing diblock copolymer micelles as template.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Institutionen der Universität: Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie II
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie II > Lehrstuhl Makromolekulare Chemie II - Univ.-Prof. Dr. Andreas Greiner
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Professur Anorganische Chemie IV
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Professur Anorganische Chemie IV > Professur Anorganische Chemie IV - Univ.-Prof. Dr. Birgit Weber
Profilfelder
Profilfelder > Advanced Fields
Profilfelder > Advanced Fields > Polymer- und Kolloidforschung
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
Eingestellt am: 09 Sep 2020 07:28
Letzte Änderung: 23 Aug 2021 12:02
URI: https://eref.uni-bayreuth.de/id/eprint/56851