Bio-inspired nanoreactor based on a miniemulsion system to create organic-inorganic hybrid nanoparticles and nanofilms

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We developed a novel route to control both mineralization and polymerization inside a nanoreactor based on a miniemulsion system to create organic-inorganic hybrid nanomaterials with diverse structures and morphologies. Nanodroplets of calcium nitrate (Ca(NO 3) 2)/monomer and nanodroplets of sodium carbonate (Na 2CO 3) were separately prepared and suspended in the oil phase. They were mixed through the fusion and fission process triggered by ultrasonication to precipitate a biomineral only inside the nanodroplets. In the presence of monomer, 2-hydroxyethyl methacrylate (HEMA), we could obtain unique structures of nano-sized CaCO 3 particles, which were crystalline with spherical or rod-like shapes or amorphous. By subsequent polymerization, we could encapsulate nano-CaCO 3 inside the polymeric nanoparticles at a desired stage of crystal growth. The preincubation period for CaCO 3 nucleation and growth and the polymerization rate were important factors to manipulate the structures and polymorphs of nano-CaCO 3 inside the hybrid nanoparticles, owing to inhibition of crystal growth and transformation by polymerization of HEMA. Also, the growth of rod-like CaCO 3 inside the nanoparticles led to formation of spheroidal hybrid nanoparticles. By using hybrid nanoparticles as building blocks, we could produce nanofilms containing nano-CaCO 3 with a variety of sizes and structures. Crystal transformation of amorphous CaCO 3 was induced inside the nanofilm by increasing the temperature to above the T g of PHEMA.

Original languageEnglish
Pages (from-to)3493-3499
Number of pages7
JournalJournal of Materials Chemistry
Volume22
Issue number8
DOIs
Publication statusPublished - 2012 Feb 28

Fingerprint

Nanoreactors
Nanoparticles
Polymerization
Crystallization
Crystal growth
Polyhydroxyethyl Methacrylate
PHEMA
Monomers
Polymorphism
Nanostructured materials
Precipitates
Carbonates
Calcium
Nitrates
Oils
Nucleation
Fusion reactions
Sodium
Crystalline materials
Crystals

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemistry(all)

Cite this

@article{1249d83b072f404cb59307b8e8425a66,
title = "Bio-inspired nanoreactor based on a miniemulsion system to create organic-inorganic hybrid nanoparticles and nanofilms",
abstract = "We developed a novel route to control both mineralization and polymerization inside a nanoreactor based on a miniemulsion system to create organic-inorganic hybrid nanomaterials with diverse structures and morphologies. Nanodroplets of calcium nitrate (Ca(NO 3) 2)/monomer and nanodroplets of sodium carbonate (Na 2CO 3) were separately prepared and suspended in the oil phase. They were mixed through the fusion and fission process triggered by ultrasonication to precipitate a biomineral only inside the nanodroplets. In the presence of monomer, 2-hydroxyethyl methacrylate (HEMA), we could obtain unique structures of nano-sized CaCO 3 particles, which were crystalline with spherical or rod-like shapes or amorphous. By subsequent polymerization, we could encapsulate nano-CaCO 3 inside the polymeric nanoparticles at a desired stage of crystal growth. The preincubation period for CaCO 3 nucleation and growth and the polymerization rate were important factors to manipulate the structures and polymorphs of nano-CaCO 3 inside the hybrid nanoparticles, owing to inhibition of crystal growth and transformation by polymerization of HEMA. Also, the growth of rod-like CaCO 3 inside the nanoparticles led to formation of spheroidal hybrid nanoparticles. By using hybrid nanoparticles as building blocks, we could produce nanofilms containing nano-CaCO 3 with a variety of sizes and structures. Crystal transformation of amorphous CaCO 3 was induced inside the nanofilm by increasing the temperature to above the T g of PHEMA.",
author = "Yuuka Fukui and Keiji Fujimoto",
year = "2012",
month = "2",
day = "28",
doi = "10.1039/c2jm14661d",
language = "English",
volume = "22",
pages = "3493--3499",
journal = "Journal of Materials Chemistry",
issn = "0959-9428",
publisher = "Royal Society of Chemistry",
number = "8",

}

TY - JOUR

T1 - Bio-inspired nanoreactor based on a miniemulsion system to create organic-inorganic hybrid nanoparticles and nanofilms

AU - Fukui, Yuuka

AU - Fujimoto, Keiji

PY - 2012/2/28

Y1 - 2012/2/28

N2 - We developed a novel route to control both mineralization and polymerization inside a nanoreactor based on a miniemulsion system to create organic-inorganic hybrid nanomaterials with diverse structures and morphologies. Nanodroplets of calcium nitrate (Ca(NO 3) 2)/monomer and nanodroplets of sodium carbonate (Na 2CO 3) were separately prepared and suspended in the oil phase. They were mixed through the fusion and fission process triggered by ultrasonication to precipitate a biomineral only inside the nanodroplets. In the presence of monomer, 2-hydroxyethyl methacrylate (HEMA), we could obtain unique structures of nano-sized CaCO 3 particles, which were crystalline with spherical or rod-like shapes or amorphous. By subsequent polymerization, we could encapsulate nano-CaCO 3 inside the polymeric nanoparticles at a desired stage of crystal growth. The preincubation period for CaCO 3 nucleation and growth and the polymerization rate were important factors to manipulate the structures and polymorphs of nano-CaCO 3 inside the hybrid nanoparticles, owing to inhibition of crystal growth and transformation by polymerization of HEMA. Also, the growth of rod-like CaCO 3 inside the nanoparticles led to formation of spheroidal hybrid nanoparticles. By using hybrid nanoparticles as building blocks, we could produce nanofilms containing nano-CaCO 3 with a variety of sizes and structures. Crystal transformation of amorphous CaCO 3 was induced inside the nanofilm by increasing the temperature to above the T g of PHEMA.

AB - We developed a novel route to control both mineralization and polymerization inside a nanoreactor based on a miniemulsion system to create organic-inorganic hybrid nanomaterials with diverse structures and morphologies. Nanodroplets of calcium nitrate (Ca(NO 3) 2)/monomer and nanodroplets of sodium carbonate (Na 2CO 3) were separately prepared and suspended in the oil phase. They were mixed through the fusion and fission process triggered by ultrasonication to precipitate a biomineral only inside the nanodroplets. In the presence of monomer, 2-hydroxyethyl methacrylate (HEMA), we could obtain unique structures of nano-sized CaCO 3 particles, which were crystalline with spherical or rod-like shapes or amorphous. By subsequent polymerization, we could encapsulate nano-CaCO 3 inside the polymeric nanoparticles at a desired stage of crystal growth. The preincubation period for CaCO 3 nucleation and growth and the polymerization rate were important factors to manipulate the structures and polymorphs of nano-CaCO 3 inside the hybrid nanoparticles, owing to inhibition of crystal growth and transformation by polymerization of HEMA. Also, the growth of rod-like CaCO 3 inside the nanoparticles led to formation of spheroidal hybrid nanoparticles. By using hybrid nanoparticles as building blocks, we could produce nanofilms containing nano-CaCO 3 with a variety of sizes and structures. Crystal transformation of amorphous CaCO 3 was induced inside the nanofilm by increasing the temperature to above the T g of PHEMA.

UR - http://www.scopus.com/inward/record.url?scp=84856700331&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84856700331&partnerID=8YFLogxK

U2 - 10.1039/c2jm14661d

DO - 10.1039/c2jm14661d

M3 - Article

VL - 22

SP - 3493

EP - 3499

JO - Journal of Materials Chemistry

JF - Journal of Materials Chemistry

SN - 0959-9428

IS - 8

ER -