Abstract
We present a simple and generalized fabrication method for monodispersed stabilizer-free water-soluble nanocrystals by confined nanocrystallization. Nanocrystallization inside well-ordered three-dimensional nanostructures involves surface-induced nucleation and confined growth of crystals. A question remains, however, as to whether the surface of concave-pit patterned substrates can induce the same confined nanocrystallization. Herein, poly(styrene-b- ethylene oxide) (PS-b-PEO) patterned surfaces having 30 nm ordered concave PEO domains were utilized as templates for confined nanocrystallization and in situ patterning. The hydrophilic characteristics of the patterned PEO nanodomains successfully provided the driving force to selectively confine hydrophilic nanocrystals within the surfaces of the domains. Nanocrystals of NaCl, fructose, 5′-guanosine monophosphate, and glycine were successfully formed and confined in the PEO domains by a simple dipping and annealing process. The dipping time, solution concentration, annealing time after dipping, and environmental conditions were the principal parameters. It was found that partially crystalline states or unique polymorphic forms resulted from the nanoconfined crystallization. The patterned individual nanocrystals could be detached from the substrate surfaces by sonication.
| Original language | English |
|---|---|
| Pages (from-to) | 5187-5192 |
| Number of pages | 6 |
| Journal | Crystal Growth and Design |
| Volume | 10 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2010 Dec 1 |
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ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
Cite this
Fabrication of water-soluble nanocrystals using amphiphilic block copolymer patterned surfaces. / Lee, Min Kyung; Bang, Joona; Shin, Kyusoon; Lee, Jonghwi.
In: Crystal Growth and Design, Vol. 10, No. 12, 01.12.2010, p. 5187-5192.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fabrication of water-soluble nanocrystals using amphiphilic block copolymer patterned surfaces
AU - Lee, Min Kyung
AU - Bang, Joona
AU - Shin, Kyusoon
AU - Lee, Jonghwi
PY - 2010/12/1
Y1 - 2010/12/1
N2 - We present a simple and generalized fabrication method for monodispersed stabilizer-free water-soluble nanocrystals by confined nanocrystallization. Nanocrystallization inside well-ordered three-dimensional nanostructures involves surface-induced nucleation and confined growth of crystals. A question remains, however, as to whether the surface of concave-pit patterned substrates can induce the same confined nanocrystallization. Herein, poly(styrene-b- ethylene oxide) (PS-b-PEO) patterned surfaces having 30 nm ordered concave PEO domains were utilized as templates for confined nanocrystallization and in situ patterning. The hydrophilic characteristics of the patterned PEO nanodomains successfully provided the driving force to selectively confine hydrophilic nanocrystals within the surfaces of the domains. Nanocrystals of NaCl, fructose, 5′-guanosine monophosphate, and glycine were successfully formed and confined in the PEO domains by a simple dipping and annealing process. The dipping time, solution concentration, annealing time after dipping, and environmental conditions were the principal parameters. It was found that partially crystalline states or unique polymorphic forms resulted from the nanoconfined crystallization. The patterned individual nanocrystals could be detached from the substrate surfaces by sonication.
AB - We present a simple and generalized fabrication method for monodispersed stabilizer-free water-soluble nanocrystals by confined nanocrystallization. Nanocrystallization inside well-ordered three-dimensional nanostructures involves surface-induced nucleation and confined growth of crystals. A question remains, however, as to whether the surface of concave-pit patterned substrates can induce the same confined nanocrystallization. Herein, poly(styrene-b- ethylene oxide) (PS-b-PEO) patterned surfaces having 30 nm ordered concave PEO domains were utilized as templates for confined nanocrystallization and in situ patterning. The hydrophilic characteristics of the patterned PEO nanodomains successfully provided the driving force to selectively confine hydrophilic nanocrystals within the surfaces of the domains. Nanocrystals of NaCl, fructose, 5′-guanosine monophosphate, and glycine were successfully formed and confined in the PEO domains by a simple dipping and annealing process. The dipping time, solution concentration, annealing time after dipping, and environmental conditions were the principal parameters. It was found that partially crystalline states or unique polymorphic forms resulted from the nanoconfined crystallization. The patterned individual nanocrystals could be detached from the substrate surfaces by sonication.
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U2 - 10.1021/cg1009708
DO - 10.1021/cg1009708
M3 - Article
VL - 10
SP - 5187
EP - 5192
JO - Crystal Growth and Design
JF - Crystal Growth and Design
SN - 1528-7483
IS - 12
ER -