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Metallic Nanodot Patterns with Unique Symmetries Templated from ABC Triblock Terpolymer Networks

Abstract : Nanotemplates derived from the self-assembly of AB-type block copolymers provide an elegant route to achieve well-defined metallic dot arrays, even if the variety of pattern symmetries is restricted due to the limited number of structures offered by microphase separated diblock copolymers. A strategy that relies on the use of complex network structures accessible through the self-assembly of linear ABC-type terpolymers is presented for the formation of metallic nanodots arrays with “outside-the-box” symmetries. Patterned templates formed by the cubic Q214 and orthorhombic O70 network structures are used as excellent platforms to build well-ordered gold nanodot arrays with unique p3m1 and p2 symmetries, respectively. A simple yet efficient blending strategy is used to tune the critical dimensions of the p3m1 pattern while laterally ordered gold nanodot arrays are also demonstrated through a directed self-assembly approach. Such highly ordered gold nanodots with tunable particle dimensions and array periods, enabling the control of their plasmonic responses, are attractive probes for biological imaging.
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Karim Aissou, Muhammad Mumtaz, Alberto Alvarez-Fernandez, Jean Mercat, Ségolène Antoine, et al.. Metallic Nanodot Patterns with Unique Symmetries Templated from ABC Triblock Terpolymer Networks. Macromolecular Rapid Communications, Wiley-VCH Verlag, 2018, 39 (7), pp.1700754. ⟨10.1002/marc.201700754⟩. ⟨hal-01688010⟩



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