Issue 20, 2022

A six-fold difference in structure results in a six-order difference in conductivity: silica shell nanoarchitectonics on carbon black particles

Abstract

Carbon black (Ketchen Black with a particle size of several tens of nm) was coated with silica with a varied thickness of 2 and 12 nm. Carbon/silica core–shell particles were grafted with the γ-methacryloxypropylsilyl group to be homogeneously dispersed into a poly(methyl methacrylate) film. The electrical conductivity of the poly(methyl methacrylate) films containing carbon/silica particles was successfully controlled by the thickness of the silica layer; silica coating with 2 nm thickness gave a conducting film, while that with 12 nm thickness gave a less conducting film with a remarkable difference on the order of 106 (in volume conductivity).

Graphical abstract: A six-fold difference in structure results in a six-order difference in conductivity: silica shell nanoarchitectonics on carbon black particles

Supplementary files

Article information

Article type
Communication
Submitted
29 Mrt. 2022
Accepted
20 Apr. 2022
First published
20 Apr. 2022

Nanoscale, 2022,14, 7480-7483

A six-fold difference in structure results in a six-order difference in conductivity: silica shell nanoarchitectonics on carbon black particles

T. Yoshida and M. Ogawa, Nanoscale, 2022, 14, 7480 DOI: 10.1039/D2NR01714H

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