Journal article
Mesoscale Self-Assembly of Hexagonal Plates Using Lateral Capillary Forces: Synthesis Using the “Capillary Bond”
Journal of the American Chemical Society, Vol.121(23), pp.5373-5391
06/01/1999
DOI: 10.1021/ja983882z
Abstract
This paper examins self-assembly in a quasi-two-dimensional, mesocale system. The system studied here involves hexagonal plates ('hexagons') of poly(dimethylsiloxane) (PDMS; 5.4 mm in diameter, 0.9-2.0 mm thick), with faces functionalized to be hydrophilic or hydrophobic, floating at the interface between perfluorodecalin (PFD) and H2O. The hexagons assemble by capillary forces originating in the interactions of the menisci at their hydrophobic and hydrophilic rectangular faces. The strength and directionality of the interactions can be tailored by manipulating the heights of the faces, the pattern of the hydrophobic faces, the pattern of hydrophobic regions on these faces, and the densities of the three interacting phases (organic liquid, aqueous liquid, polymeric solid). Examination of all 14 possible combinations of hydrophobic and hydrophilic faces on the hexagonal plates led to three outcomes: (i) the extension of the strategies of self-assembly from the molecular to the mesoscale, (ii) the demonstration of a system in which small objects can be designed to self- assemble into a variety of arrays, and (iii) the hypothesis that capillary forces between objects can, in some circumstances, be considered to form the basis for a 'bond' between them-the capillary bond-and be used in synthesis in a way analogous to that in which noncovalent bonds are employed in molecular-scale synthesis.
Details
- Title: Subtitle
- Mesoscale Self-Assembly of Hexagonal Plates Using Lateral Capillary Forces: Synthesis Using the “Capillary Bond”
- Creators
- Ned Bowden - Contribution from the Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138Insung S Choi - Contribution from the Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138Bartosz A Grzybowski - Contribution from the Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138George M Whitesides - Contribution from the Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138
- Resource Type
- Journal article
- Publication Details
- Journal of the American Chemical Society, Vol.121(23), pp.5373-5391
- DOI
- 10.1021/ja983882z
- ISSN
- 0002-7863
- eISSN
- 1520-5126
- Language
- English
- Date published
- 06/01/1999
- Academic Unit
- Chemistry
- Record Identifier
- 9984216679502771
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