AI Article Synopsis
- Copper and cobalt metallosurfactants, derived from Cu(II) and Co(III) macrobicyclic complexes, can form unique wormlike micelles in water, which can also convert into vesicle structures.
- These cylindrical micelles are atypical for standard triple-chain surfactants, challenging traditional geometrical packing theories.
- The behavior of these compounds has been studied using cryo-TEM and SAXS, revealing that both Cu and Co solutions exhibit viscoelastic properties at 1 wt %, suggesting potential for integrating metallo aggregates into mesoporous silica for various applications.
Article Abstract
We have shown that copper and cobalt metallosurfactants derived from Cu(II) and Co(III) complexes of a macrobicyclic hexamine ("cage") can form wormlike micelles in aqueous solution that may coexist with or easily interconvert with vesicle structures. The cylindrical micelle structures are unusual for triple-chain surfactants with a single headgroup and are not easily accounted for using geometrical packing arguments. The solution behavior has been characterized by cryo-TEM and SAXS measurements. Both the Cu and Co compounds display viscoelastic solutions at 1 wt %, indicating that such behavior may be anticipated for the full variety of stable metal complexes formed by the cage headgroup, auguring applications based on the incorporation of metallo aggregates into mesoporous silica structures.
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| http://dx.doi.org/10.1021/la701283b | DOI Listing |
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