LBL assembly

Figure 5.4 LbL assembly of polyelectrolyte capsule. Alternately charged molecules are added to the template several times, giving species (d).This is followed by dissolution ofthe template (e) leaving the polyelectrolyte capsule. Reproduced with permission from [36],...

Fig. 2.2 Enzyme reactors prepared by LbL assembly (A) reactor on quartz plate for color-indication of glucose (B) multi-enzyme reactor for starch digestion on ultrafilter. Adapted from [26], M. Onda etal, Biotechnol. Bioeng. 1996, 57, 163 and [27], M. Onda et al.,J. Ferment. Bioeng. 1996, 82, 502.

Fig. 2.18 Vesicle structures with silica wall (A) mesostructured silica vesicle (B) hollow capsule composed of silica particles prepared by LbL assembly.

Fig. 2.22 LbL assembly of cerasome (A) LbL assembly between anionic cerasome and cationic polyelectrolyte (B) LbL assembly between anionic cerasome and cationic cerasome.

Adsorption Cycle Fig. 2.23 QCM responses on LbL assemblies (a) LbL assembly between dihexadecyl phosphate vesicle and PDDA (b) LbL assembly between anionic cerasome (larger step) and PDDA (smaller step) (c) LbL assembly between anionic cerasome (larger step) and cationic... 

Recently, the LbL technique has been extended from conventional nonporous substrates to macroporous substrates, such as 3DOM materials [58,59], macroporous membranes [60-63], and porous calcium carbonate microparticles [64,65], to prepare porous PE-based materials. LbL-assembly of polyelectrolytes can also be performed on the surface of MS particles preloaded with enzymes [66,67] or small molecule drugs [68], and, under appropriate solution conditions, within the pores of MS particles to generate polymer-based nanoporous spheres following removal of the silica template [69]. 

Fig. 7.5 TEM image of microcapsules prepared theinsetcorrespondsto800nm. PLL/PGAlayers by LbL assembly of three bilayers of a PLL/PGA were assembled from a 0.05 M MES, pH 5.5 shell on catalase-loaded BMS spheres, following buffer. The MS spheres were dissolved usingHF/ removal ofthe BMS particle template (A). CLSM NH4F at pH 5. (Adapted from [82] with per-images of (PLL/PGA)3 microcapsules loaded mission of Wiley-VCH). with FITC-labeled catalase (B). The scale bar in...

A novel zeolite material possessing an inherent hierarchical structure with good mechanical and chemical strength has been prepared by the LbL assembly of zeolite nanocrystals and PDDA on the diatomite substrates [129]. The diatomite used has a disk-like morphology (Figure 7.12A) and exhibits abundant and uniform macropores (about 300-500 nm) in the diatomite plates (Figure 7.12B). The zeolite-diatomite (ZD)... 

---