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  • Title: DNA functionalization of colloidal particles via physisorption of azide-functionalized diblock copolymers.
    Author: Moon J, Jo IS, Yoon JH, Kim Y, Oh JS, Pine DJ, Yi GR.
    Journal: Soft Matter; 2019 Sep 21; 15(35):6930-6933. PubMed ID: 31372613.
    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.
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