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

Tomomi Hoshino, Kanako Sato, Yuya Oaki, Ayae Sugawara-Narutaki, Katsuhiko Shimizu, Noriaki Ozaki, Hiroaki Imai

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)1301-1306
Number of pages6
JournalRSC Advances
Issue number2
Publication statusPublished - 2016

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)


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