Issue 19, 2016

Tailoring length and viscosity of dynamic metallo-supramolecular polymers in solution

Abstract

Transition metal ions, like Fe2+, Co2+ and Ni2+ coordinate to ditopic ligands such as 1,4-bis(2,2′:6′,2′′-terpyridin-4′-yl)benzene (1) forming sufficiently strong yet dynamic bonds in aqueous solutions, leading to extended, rigid-rod like metallo-supramolecular coordination polyelectrolytes (MEPEs). Here, we present a way to adjust the average molar mass, chain-length and viscosity of MEPEs using the monotopic chain stopper 4′-(phenyl)-2,2′:6′,2′′-terpyridine (2). The systems are analyzed by light scattering and viscometry. The experiments indicate that chain-length and viscosity of the MEPEs are modifiable in predictable ways by adding the monotopic chain stopper, 2. Light scattering is a suitable method for studying the molar mass and also the shape of the MEPEs.

Graphical abstract: Tailoring length and viscosity of dynamic metallo-supramolecular polymers in solution

Supplementary files

Article information

Article type
Paper
Submitted
16 Dec 2015
Accepted
25 Jan 2016
First published
27 Jan 2016

RSC Adv., 2016,6, 15441-15450

Tailoring length and viscosity of dynamic metallo-supramolecular polymers in solution

S. M. Munzert, G. Schwarz and D. G. Kurth, RSC Adv., 2016, 6, 15441 DOI: 10.1039/C5RA26907E

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