Guldin, S;
Stefik, M;
Sai, H;
Wiesner, U;
Steiner, U;
(2015)
Controlling the coassembly of highly amphiphilic block copolymers with a hydrolytic sol by solvent exchange.
RSC Advances
, 5
(29)
22499 - 22502.
10.1039/C5RA00836K.
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Abstract
The coassembly of an inorganic sol by organic structure-directing agents is a widely established technique for solution processed mesoporous metal oxides. Block copolymers with highly amphiphilic blocks are promising candidates for fast and robust material assembly into a range of periodic nano-morphologies. The high polarity difference is however an inherent challenge for the simultaneous processing of hydrophilic and hydrophobic components. Here, we show that a solvent exchange through the evaporation of the initial volatiles and redissolution in an azeotrope mixture of polar and apolar solvents with a common high boiling point allows the evolution of a micellar solution towards block copolymer-dictated structures near thermodynamic equilibrium, with controlled access to inorganic cylinders, lamellae and organic cylinders within a continuous inorganic matrix.
| Type: | Article |
|---|---|
| Title: | Controlling the coassembly of highly amphiphilic block copolymers with a hydrolytic sol by solvent exchange |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/C5RA00836K |
| Publisher version: | http://dx.doi.org/10.1039/C5RA00836K |
| Language: | English |
| Additional information: | Guldin, S; Stefik, M; Sai, H; Wiesner, U; Steiner, U; (2015) Controlling the coassembly of highly amphiphilic block copolymers with a hydrolytic sol by solvent exchange. RSC Advances , 5 (29) 22499 - 22502. 10.1039/C5RA00836K. Reproduced by permission of The Royal Society of Chemistry |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1462714 |
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