Fabrication of ordered poly(methyl methacrylate) nanobowl arrays using SiO2 colloidal crystal templates.

Fabrication of ordered poly(methyl methacrylate) nanobowl arrays using SiO2 colloidal crystal templates.

Journal of nanoscience and nanotechnology (2014-04-18)

Lier Deng, Ming Fu, Yinglei Tao, Xiaoyun Guo

RESUMEN

A simple approach is presented for the fabrication of poly(methyl methacrylate) (PMMA) nanobowl arrays over cm2 areas using SiO2 colloidal crystal templates. SiO2 colloidal crystal templates were prepared on a clean glass substrate by self-assembled SiO2 spheres of 410 nm in diameter. The air between the silica spheres was filled by the superfluous monomer of PMMA that can be subsequently polymerized. After infiltration, the SiO2-PMMA templates were immersed in a 3 wt% hydrofluoric acid (HF) aqueous solution. After 24 h, silica spheres were etched and a free-standing nanobowl sheet was obtained. The size of the nanobowls could be controlled by the size of the SiO2 spheres and the area of the nanobowl sheet could be altered by the size of the glass substrate.

MATERIALES

Número de producto

Marca

Descripción del producto

420840

Sigma-Aldrich

LUDOX^® AS-40 colloidal silica, 40 wt. % suspension in H₂O

445746

Sigma-Aldrich

Poly(methyl methacrylate), average M_w ~350,000 by GPC

420816

Sigma-Aldrich

LUDOX^® HS-40 colloidal silica, 40 wt. % suspension in H₂O

637238

Sigma-Aldrich

Sílice, nanopowder, 10-20 nm particle size (BET), 99.5% trace metals basis

182230

Sigma-Aldrich

Poly(methyl methacrylate)

200336

Sigma-Aldrich

Poly(methyl methacrylate), average M_w ~15,000 by GPC, powder

182265

Sigma-Aldrich

Poly(methyl methacrylate)

420778

Sigma-Aldrich

LUDOX^® TM-50 colloidal silica, 50 wt. % suspension in H₂O

748161

Sigma-Aldrich

Sílice, nanoparticles, mesoporous, 200 nm particle size, pore size 4 nm

637246

Sigma-Aldrich

Sílice, nanopowder (spherical, porous), 5-20 nm particle size (TEM), 99.5% trace metals basis

718483

Sigma-Aldrich

Sílice, nanopowder, 99.8% trace metals basis

420824

Sigma-Aldrich

LUDOX^® HS-30 colloidal silica, 30 wt. % suspension in H₂O

420794

Sigma-Aldrich

LUDOX^® SM colloidal silica, 30 wt. % suspension in H₂O

643645

Sigma-Aldrich

Sílice, MCM-41 type (hexagonal)

420786

Sigma-Aldrich

LUDOX^® TM-40 colloidal silica, 40 wt. % suspension in H₂O

421553

Sigma-Aldrich

Sílice

420832

Sigma-Aldrich

LUDOX^® AS-30 colloidal silica, 30 wt. % suspension in H₂O

420875

Sigma-Aldrich

LUDOX^® AM colloidal silica, 30 wt. % suspension in H₂O

420859

Sigma-Aldrich

LUDOX^® TMA colloidal silica, 34 wt. % suspension in H₂O

420883

Sigma-Aldrich

LUDOX^® CL colloidal silica, 30 wt. % suspension in H₂O

420808

Sigma-Aldrich

LUDOX^® LS colloidal silica, 30 wt. % suspension in H₂O

420891

Sigma-Aldrich

LUDOX^® CL-X colloidal silica, 45 wt. % suspension in H₂O

452130

Sigma-Aldrich

Poly(methyl methacrylate), isotactic, >80% isotactic

560979

Sigma-Aldrich

Sílice, MSU-F (cellular foam)

81503

Supelco

Poly(methyl methacrylate), analytical standard, suitable for gel permeation chromatography (GPC), 100,000

81489

Supelco

Poly(methyl methacrylate), analytical standard, suitable for gel permeation chromatography (GPC), 2,000

81501

Supelco

Poly(methyl methacrylate), analytical standard, suitable for gel permeation chromatography (GPC), 50,000

370037

Supelco

Poly(methyl methacrylate), analytical standard, suitable for gel permeation chromatography (GPC), average M_w 97,000 (Typical), average M_n 46,000 (Typical)

03558

Supelco

Poly(methyl methacrylate), analytical standard, 2,480,000

94131

Supelco

Poly(methyl methacrylate), analytical standard, suitable for gel permeation chromatography (GPC), 4,000