Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Query: EC:1.10.3.3 (
ascorbate oxidase
)
778
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
Mesoscale pore one-dimensional (1D) nanostructures, or vertically aligned porous nanostructures (VAPNs), have attracted attention with their excellent hydrophobic properties, ultra-high surface area, and high friction coefficient, compared to conventional vertically aligned nanostructures (VANs). In this study, we investigate the replication of VAPNs produced by the thermal nanoimprint process using anodic aluminum oxide (
AAO
2
) templates (100 nm diameter). Polystyrene/poly(vinyl alcohol) (PS
1
/
PVA
) blends, prepared by the advanced melt-mixing process with an ultra-high shear rate, are used to investigate the formation of porosity at the nanometer scale. The results reveal that domain size and mass ratios of
PVA
precursors in the PS matrix play a dominant role in the interfacial interaction behavior between PS
1
-
PVA
-
AAO
2
, on the obtained morphologies of the imprinted nanostructures. With a
PVA
nanodomain precursor (PS
1
/
PVA
90/10 wt%), the integration of
PVA
nanodroplets on the
AAO
2
wall due to the hydrogen bonding that induces the phase separation between PS
1
-
PVA
results in the formation of VAPNs after removal of the
PVA
segment. However, in the case of
PVA
microdomain precursors (PS
1
/
PVA
70/30 wt%), the structure transformation behavior of PS
1
is induced by the Rayleigh instability between
PVA
encapsulated around the PS
1
surfaces, resulting in the PS
1
nanocolumns transforming into nanopeapods composed of nanorods and nanospheres.
...
PMID:Replication of Mesoscale Pore One-dimensional Nanostructures: Surface-induced Phase Separation of Polystyrene/Poly(vinyl alcohol) (PS/PVA) Blends. 3121 1
