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Self-assembly of diblock copolymers confined in cylindrical nanopores
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10.1063/1.2768920
/content/aip/journal/jcp/127/11/10.1063/1.2768920
http://aip.metastore.ingenta.com/content/aip/journal/jcp/127/11/10.1063/1.2768920
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Figures

Image of FIG. 1.
FIG. 1.

(Color) Self-assembled morphologies for symmetric diblock copolymers with confined in pores (a) the morphologies as functions of the ratio and . For the S helices or imperfect S helices, morphologies of only the A blocks (or B blocks) are also given, and for some concentric lamellae, a cross section view is also given. The boundary of the concentric lamellae (or the perpendicular lamellae) is given with two identical structures for each value when . [(b)–(d)] Morphologies formed with : (b) , ; (c) , , and (d) , .

Image of FIG. 2.
FIG. 2.

(Color online) The order parameter for concentric lamellae at . (a) The value of the order parameter at the pore center as a function of and (b) at different values.

Image of FIG. 3.
FIG. 3.

Schematics of concentric lamellae with . The outermost solid circle represents the pore surfaces, the inside solid circles represent interfaces, and the dashed circles represent the assumed or interfaces in the strong segregations limit.

Image of FIG. 4.
FIG. 4.

(Color online) Comparison of the dimensionless thicknesses of the alternating -rich and -rich layers in concentric lamellae for strongly preferential surfaces obtained from simulations (symbols) with those predicted from the equations (lines). In the figure, three parts according to from small to larger correspond to , 2, and 3. In each part, the squares and the lower lines represent the thicknesses of the outermost -rich layer . The up lines represent the thicknesses of the inner - or -rich layers. The up triangles, down triangles, and right triangles represent the thickness of , , , respectively.

Image of FIG. 5.
FIG. 5.

(Color online) The mean-square end-to-end distance, , as a function of for symmetric diblock copolymers.

Image of FIG. 6.
FIG. 6.

(Color online) The mean-square end-to-end distances of and chains and respectively, as a function of for symmetric diblock copolymers with (a) strongly preferential surfaces, (b) weakly preferential surfaces, and (c) neutral surfaces.

Image of FIG. 7.
FIG. 7.

(Color online) The components of the mean-square end-to-end distances of and chains, respectively, as a function of for symmetric diblock copolymers with strongly preferential surfaces. (a) and (b)

Image of FIG. 8.
FIG. 8.

(Color online) The components, and , of the mean-square end-to-end distance as a function of for symmetric diblock copolymers with neutral surfaces.

Image of FIG. 9.
FIG. 9.

(Color online) The mean-square end-to-end distances as a function of . (a) and [(b) and (c)] and , where (b) and (c) .

Image of FIG. 10.
FIG. 10.

(Color online) (a) The local concentration profile of monomers near the surface, (b) the average contact numbers for an monomer with monomers, and (c) the free energy per chain as a function of .

Image of FIG. 11.
FIG. 11.

(Color) Self-assembled morphologies for asymmetric diblock copolymers with as a function of . Only the blocks are shown. The outermost red circle in each top view indicates the surface of the cylindrical pore. (a) and (b) .

Image of FIG. 12.
FIG. 12.

(Color online) Comparison of the radial order parameter profiles for different structures: (a) The degenerated structures of concentric perforated lamellae and S helices at and (b) the two-ring structure at .

Image of FIG. 13.
FIG. 13.

(Color online) The mean-square end-to-end distances as a function of for asymmetric diblock copolymers, where the values for the degenerated structures are all shown. (a) , (b) , and (c) .

Image of FIG. 14.
FIG. 14.

(Color online) The average contact numbers for an monomer with monomers as a function of , where the values for the degenerated structures are all shown.

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/content/aip/journal/jcp/127/11/10.1063/1.2768920
2007-09-20
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Self-assembly of diblock copolymers confined in cylindrical nanopores
http://aip.metastore.ingenta.com/content/aip/journal/jcp/127/11/10.1063/1.2768920
10.1063/1.2768920
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