A new lyotropic liquid crystalline system: oligo(ethylene oxide) surfactants with [M(H2O)n]Xm transition metal complexes

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A new lyotropic liquid crystalline system Oligo(ethylene oxide) surfactants with [M(H2O)n]Xm transition metal complexes.pdf (412.21 KB)

Date

2001

Authors

Çelik, Ö.
Dag, Ö.

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Source Title

Angewandte Chemie - International Edition

Print ISSN

1433-7851

Electronic ISSN

Publisher

Wiley

Volume

40

Issue

20

Pages

3800 - 3803

Language

English

Type

Article

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Abstract

Coordinated water molecules induce the aggregation and self-assembly of the lyotropic liquid crystalline phase formed from non-ionic surfactants CnH2n+1(CH2CH2O)mOH and transition metal aqua complexes (Ni(H2O)62, Co(H2O)62, Cd(H2O)42, and [Co(H2O)6]Cl2) into hexagonal (see schematic representation) and/or cubic structures. While the NiII and CoII complexes undergo recrystallization and phase separation at high complex concentrations, the ZnII and CdII complexes form cubic phases above metal/surfactant molar ratios of 3.2/1 at room temperature.

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Keywords

Liquid crystals , Mesophases , Nanostructures , Surfactants , Transition metals , Agglomeration , Crystallization , Molecules , Phase separation , Self assembly , Surface active agents , Water molecules

Citation

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http://hdl.handle.net/11693/24798

item.page.isversionof

https://doi.org/10.1002/1521-3773(20011015)40:20<3799::AID-ANIE3799>3.0.CO;2-I

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Department of Chemistry