• Home
  • Search Results
  • Towards multifunctional materials incorporating elastomers and reversible redox-active fragments.

Towards multifunctional materials incorporating elastomers and reversible redox-active fragments.

Chemistry (Weinheim an der Bergstrasse, Germany) (2014-10-09)
Màrius Tarrés, Clara Viñas, Ana M Cioran, Mikko M Hänninen, Reijo Sillanpää, Francesc Teixidor
ABSTRACT

This paper presents a novel and unique feature of metallacarboranes, consisting of the linkage of this redox electro-active site to a stretchable polymer. This is based on polyTHF, a known and applied material. This hybrid material has the two ends functionalized: one with the aforementioned redox molecule and the other with a terminal OH group, both linked by a molecular spring. Moreover, the redox electro-active molecules can be synthesized with either cobalt (cobaltabisdicarbollide) or with iron (ferrabisdicarbollide), species whose respective E(1/2) value differs by almost 1 V. The polymerization mechanism, based on an intermediate molecular crystal structure, is explained through an unexpected cyclization process of the dioxanate derivative of the metallacarboranes with an additional THF molecule. This is achieved in the absence of any metal or external electrophile. Surface functionalization of a Pt electrode by the electropolymerization of pyrrole doped with the pristine metallacarboranes and with the polyTHF hybrid materials is reported in this paper.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Hydrogen peroxide solution, 30 % (w/w) in H2O, contains stabilizer
Sigma-Aldrich
1,4-Dioxane, anhydrous, 99.8%
Sigma-Aldrich
Ethyl acetate, ACS reagent, ≥99.5%
Sigma-Aldrich
Ethyl acetate, suitable for HPLC, ≥99.7%
Sigma-Aldrich
Hydrogen peroxide solution, contains inhibitor, 30 wt. % in H2O, ACS reagent
Sigma-Aldrich
Ethyl acetate, anhydrous, 99.8%
Sigma-Aldrich
Hydrogen peroxide solution, 50 wt. % in H2O, stabilized
Millipore
Hydrogen peroxide solution, 3%, suitable for microbiology
Supelco
Hydrogen peroxide solution, ≥30%, for trace analysis
Sigma-Aldrich
1,4-Dioxane, ACS reagent, ≥99.0%
Sigma-Aldrich
Ethyl acetate, HPLC Plus, for HPLC, GC, and residue analysis, 99.9%
Sigma-Aldrich
Ethyl acetate, puriss., meets analytical specification of Ph. Eur., BP, NF, ≥99.5% (GC)
Sigma-Aldrich
Hydrogen peroxide solution, contains ~200 ppm acetanilide as stabilizer, 3 wt. % in H2O
Supelco
Hydrogen peroxide solution, 30 % (w/w), for ultratrace analysis
Sigma-Aldrich
Hydrogen peroxide solution, 34.5-36.5%
Sigma-Aldrich
Ethyl acetate, suitable for HPLC, ≥99.8%
Supelco
Ethyl acetate, analytical standard
Sigma-Aldrich
Ethyl acetate, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.5% (GC)
Supelco
1,4-Dioxane, analytical standard
Sigma-Aldrich
1,4-Dioxane, suitable for HPLC, ≥99.5%
Sigma-Aldrich
1,4-Dioxane, ReagentPlus®, ≥99%
Sigma-Aldrich
Hydrogen Peroxide Solution, 30% (w/w), puriss. p.a., reag. ISO, reag. Ph. Eur.
Sigma-Aldrich
Hydrogen peroxide solution, contains inhibitor, 30 wt. % in H2O, meets USP testing specifications
Supelco
Ethyl Acetate, Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
Hydrogen peroxide solution, contains inhibitor, 35 wt. % in H2O
Supelco
1,4-Dioxane, Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
Ethyl acetate, ≥99%, FCC, FG
Sigma-Aldrich
Hydrogen peroxide solution, tested according to Ph. Eur.
Sigma-Aldrich
Hydrogen peroxide solution, purum p.a., ≥35% (RT)
Sigma-Aldrich
Ethyl acetate, ReagentPlus®, ≥99.8%