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Soft Matter. 2019 Sep 21;15(35):6930-6933. doi: 10.1039/c9sm01243e. Epub 2019 Aug 2.

DNA functionalization of colloidal particles via physisorption of azide-functionalized diblock copolymers.

Author information

1
School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea. yigira@skku.edu.
2
Center for Soft Matter Research, Department of Physics, New York University, New York, New York 10003, USA.
3
Center for Soft Matter Research, Department of Physics, New York University, New York, New York 10003, USA and Department of Chemical & Biomolecular Engineering, Tandon School of Engineering, New York University, Brooklyn, New York 11201, USA.

Abstract

DNA-coated inorganic particles can be prepared simply by physical adsorption of azide-functionalized diblock copolymers (polystyrene-b-poly(ethylene oxide)-azide, PS-b-PEO-N3) onto hydrophobically-modified inorganic particles, followed by strain-promoted azide-alkyne cycloaddition (SPAAC, copper-free click chemistry). This approach is applied to organosilica, silica and titania particles. The DNA-coated colloids are successfully crystallized into colloidal superstructures by a thermal annealing process using DNA-mediated assembly.

PMID:
31372613
DOI:
10.1039/c9sm01243e

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