Issue 2, 2016
From the journal:

RSC Advances

Plant opal-mimetic bunching silica nanoparticles mediated by long-chain polyethyleneimine

Tomomi Hoshino,a   Kanako Sato,a   Yuya Oaki,a   Ayae Sugawara-Narutaki,b   Katsuhiko Shimizu,cd   Noriaki Ozakie  and  Hiroaki Imai*a  

* Corresponding authors

a Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa, Japan
E-mail: hiroaki@applc.keio.ac.jp
Fax: +81455661551
Tel: +81455661556

b Department of Crystalline Materials Science, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan

c Organization for Regional Industrial Academic Cooperation, Tottori University, 4-101 Koyama-cho, Minami, Tottori 680-8550, Japan

d Japan Organization for Regional Industrial Academic Cooperation, Tottori University, 4-101 Koyama-cho, Minami, Tottori 680-8550, Japan

e Department of Biotechnology, Faculty of Bioresource Sciences, Akita Prefectural University, 241-438 Kaidobata-Nishi, Nakano Shimoshinjo, Akita 010-0195, Japan

Abstract

We found that opals covering a rice plant are composed of loosely packed silica nanoparticles ∼50 nm in diameter. The plant opal-mimetic structures of bunching nonspherical silica nanoparticles were produced through hydrolysis of tetraethoxysilane in an alcoholic solution containing a long-chain branched polyethyleneimine (BPEI). Bunching silica nanoparticles 10–50 nm in diameter were spontaneously grown in polymer-mediated polycondensation in the BPEI matrix that accumulated hydrolyzed silicate species.

Graphical abstract: Plant opal-mimetic bunching silica nanoparticles mediated by long-chain polyethyleneimine

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Article information

DOI
https://doi.org/10.1039/C5RA25742E
Article type
Paper
Submitted
03 Dec 2015
Accepted
15 Dec 2015
First published
23 Dec 2015

RSC Adv., 2016,6, 1301-1306

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Plant opal-mimetic bunching silica nanoparticles mediated by long-chain polyethyleneimine

T. Hoshino, K. Sato, Y. Oaki, A. Sugawara-Narutaki, K. Shimizu, N. Ozaki and H. Imai, RSC Adv., 2016, 6, 1301 DOI: 10.1039/C5RA25742E

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