Analytical Sciences

Simple Preparation of Microstructure by Using an Organic–Inorganic Raspberry-like Hybrid as a Building Block

Hiroshi SHIIGI,* Yusuke MURANAKA,* Yojiro YAMAMOTO,*,** and Tsutomu NAGAOKA*

*Applied Chemistry, Osaka Prefecture University, 1-2 Gakuen, Naka, Sakai, Osaka 599-8570, Japan
**GreenChem Inc., 930-1 Fukuda, Naka, Sakai, Osaka 599-8241, Japan

A single-step strategy has been developed for synthesizing a micrometer-sized structure by using the raspberry-like hybrid as a building block comprising a repeated sequence of a three-dimensional gold nanoparticle (AuNP)-aniline oligomer-AuNP arrangement. The hybrid holds a high density of highly dispersible AuNPs without any contact with each other, and therefore the microstructure has many nanometer-sized gaps between the adjacent AuNPs for both electrical and optical sensing. We have discussed how the formation mechanism of the microstructure is based on using the hybrid.

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