Cylinder morphology

Significant dendron shape distortion is required to accommodate the cylinder morphology in which the cylinder s diameter exceeds the diameter of the dendrons only by a factor of two. To allow formation of this geometry six single dendritic macromolecules have to assemble into a columnar... 

Fig. 29 Cartoon demonstrating arrangement of dendrons in hexagonally dose-packed cylinder morphology (left) or in lamellar morphology (right). From [93]. Copyright 2002 American Chemical Society...

Doping the PEO phase with lithium perchlorate in the PI-fc-PS-fc-PEO (Fig. 55) does not lead to a loss of morphologies. However, the orthorhombic phase (cf. Fig. 18 for a more extensive discussion) changes into a core-shell cylinder morphology [171]. 

Figure 1.5. Schematic view of some channels in a hexagonal zeolite crystal with cylinder morphology.

We reported the preparation of sophisticated bipolar three-dye photonic antenna materials for light harvesting and transport [22]. The principle is illustrated in Figure 1.12. Zeolite L microcrystals of cylinder morphology are used as host for organizing several thousand dyes as monomers into well-defined zones. 

Hammersky MW, Hillmeyer MA, Tirell M, Bates FS, Lodge TP, von Meerwall ED (1998) Block copolymer self-diffusion in the gyroid and cylinder morphologies. Macromolecules 31 5363-5370... 

Interestingly, the LC cylinder morphology was also observed by Watanabe et al. [86] with SMCN6-17/20 (for structure, see Scheme 7 E2) since the LC weight fraction of this sample is very close to 50% for which a lamellar morphology was expect-... 

Figure 12. Packing models for lamellar and LC cylinder morphology. (Reprinted in part from [43], with permission).

Figure 13. Structure of the famous leaning Tower of Pisa. Note that the packing is also identical to that found in LC cylinder morphology with a smectic mes-ophase in the LC domain. The tower represents the cylinder microdomain and the columns represent meso-gens which are packed in a layer structure like the SmA phase.

SBM/50% SB blend superlattice, M cylinders (white), surrounded by four B cylinders (dark) attached to it, S forms the matrix (gray) cyUnder at cylinder morphology ... 

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