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http://dx.doi.org/10.6117/kmeps.2018.25.4.035

Synthesis of Organic-inorganic Core-shell Nanoparticle Powder using Immersion Annealing Process  

Choi, Young Joong (Electronic Convergence Materials Division, Korea Institute of Ceramic Engineering & Technology (KICET))
Jung, Hyunsung (Electronic Convergence Materials Division, Korea Institute of Ceramic Engineering & Technology (KICET))
Bang, Jiwon (Electronic Convergence Materials Division, Korea Institute of Ceramic Engineering & Technology (KICET))
Park, Woon Ik (Electronic Convergence Materials Division, Korea Institute of Ceramic Engineering & Technology (KICET))
Publication Information
Journal of the Microelectronics and Packaging Society / v.25, no.4, 2018 , pp. 35-40 More about this Journal
Abstract
Simple and useful synthetic process to control the morphology of block copolymers (BCPs) is required for implementation in various device applications. However, the conventional method to use colloidal templates is not enough to realize the production of pure and massive core-shell nanoparticles due to the cost-intensive complex process. Here, we introduce a novel and facile synthesis method to realize the formation of core-shell $SiO_x$ nanoparticle power by employing an immersion annealing of a sphere-forming poly(styrene-b-dimethylsiloxane) (PS-b-PDMS) BCP. We successfully obtained a PS-encapsulated $SiO_x$ nanoparticle with a diameter of ~20 nm. In addition, we analyzed how the mixing ratio of heptane/ethanol affects the BCP morphology of self-assembled PS-b-PDMS nanoparticles, showing a worm-like structure under the optimum immersion conditions. This useful approach is expected to be extendable to other solvent-based BCP synthesis, providing a new guideline for unique BCP production.
Keywords
block copolymer; core-shell; immersion annealing; morphology control;
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