TY  - JOUR
A1  - Schwarz, Guntram
A1  - Bodenthin, Yves
A1  - Geue, Thomas
A1  - Koetz, Joachim
A1  - Kurth, Dirk G.
T1  - Structure and properties of dynamic rigid rod-like metallo-supramolecular polyelectrolytes in solution
N2  - Metal-ion-induced self-assembly in aqueous solution of the rigid ligand 1,4-bis(2,2':6',2 ''-terpyridine-4'-yl)benzene (1) with Fe(OAc)(2) and Ni(OAc)(2) is investigated with viscosimetry, SANS, and AFM. Ligand 1 forms extended, rigid-rod like metallo-supramolecular coordination polyeectrolytes (MEPEs) with a molar mass of up to 200 000 g mol(-1) under the Current experimental conditions. The molar mass depends oil concentration, stoichiometry, and time. By spin-coating MEPEs oil a solid surface, we call image the MEPEs in real space by AFM. Both AFM and SANS confirm the extended rigid-rod-type structure of the MEPEs. As a control experiment, we also studied the flexible ligand 1,3-bis[4'-oxa(2,2':6',2 ''-terpyridinyl)]propane (2). Ligand 2 does not form extended macro-assemblies but likely ringlike structures with three 10 four repeat units. Finally, we present it protocol to control the stoichiometry during self-assembly using conductometry, which is of paramount importance to obtain meaningful and reproducible results.
Y1  - 2010
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/12081
UR  - http://pubs.acs.org/doi/full/10.1021/ma902057f
SN  - 0024-9297
ER  -