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LLC monomer via complementary shape-packing and amide H-bonding near
theporeinterface(Fig.16).Thesulfonicacidmonomerisonlyabletoform
amixtureofLandH
II
phases on its own because the sulfonic acid headgroup
is not conducive to good H
II
-phase formation [118]. This LLC blending/H-
bond templating approach may be a general method for inducing highly
functionalized LLC mesogens that do not exhibit good LLC behavior, into
well-defined LLC phases [119].
Enantioselective catalysis with cross-linked LLC materials has also re-
cently been demonstrated. The crossed-linked H
II
phase of a taper-shaped
LLC monomer containing a chiral imidazolinone headgroup has been shown
Fig. 17
Brønsted acid-induced LLC phase formation of a chiral imidazolinone monomer
as means of generating nanoporous, solid-state, chiral Diels-Alder catalysts. Partially
reproduced with permission from [120].
©
2005 by the American Chemical Society
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