Supramolecular Structures of Macromolecules Containing Bipyridine-Copper(I) Complexes as Revealed from Transmission Electron Microscopy Studies
-
Eisenbach, Claus D.; Göldel, Andreas; Terskan-Reinold, Monika; Schubert, Ulrich S.
- Abstract:
- Transmission electron
microscopy (TEM) studies on
bipyridine (bpy) containing block
copolymer systems showed the
formation of nanoscopic polymerÐion
complexes through complexation
with copper(I) ions which segregated
to highly ordered columnar domains
of mesoscopic dimensions. The
domains, i.e. stacks of [(bpy)2Cu(I)]
complex moieties could be visualized
by complementary TEM techniques.
First, electron energy loss spectra
(EELS) showed the absorption edges
of copper and nitrogen, which are
speciÞc for the bipyridine copper
complexes. The element spectroscopic
imaging (ESI) technique allowed the
imaging of the net copper and net
nitrogen distribution, and the coinciding
pictures exhibited a microphase
separated system in the case of a 3-
block copolymer with complexed end
segments. High resolution elastic
bright Þeld images showed
interference lines with a line to line
distance of about 8 A_ which could be
related to the CuÐCu distance in
staggered Cu(I)Ðbipyridine
complexes.
- Year:
- 1998
- Type of Publication:
- Article
- Keywords:
- Transmission electron microscopy; supramolecular structures; bipyridine copper I complexes; microphase separation; thermoplastic elastomers
- Journal:
- Colloid and Polymer Science
- Volume:
- 276
- Pages:
- 780 – 785