New crown-appended @entity165 -based organogelator 1, which has two @entity165 skeletons as a chiral aggregate-forming site, two @entity1472 groups as an acidic proton-binding site, and one crown moiety as a cation-binding site, was synthesized, and the gelation ability was evaluated in organic solvents. It can gelate @entity1543 , @entity1626 , @entity1324 , @entity1068 , @entity10439 , @entity9840 , @entity3733 , and @entity9104 under 1.0 wt %, indicating that 1 acts as a versatile gelator of various organic solvents. To characterize the aggregation mode in the organogel system, we observed a CD spectrum of the @entity1543 gel 1. In the CD spectrum, the lambda(theta)=0 value appears at 353 nm, which is the same as the absorption maximum lambda(max) = 353 nm. The positive sign for the first @entity2708 effect indicates that the dipole moments of @entity37313 chromophores tend to orient in a clockwise direction. Very surprisingly, the TEM images of the 1 + @entity1543 gel resulted in the helical ribbon and the tubular structures. @entity4625 -gel polymerization of @entity23149 was carried out using 1 in the gel phase. The @entity3440 obtained from the 1 + @entity1543 gel showed the helical ribbon with 1700-1800-nm pitches and the tubular structure of the @entity3440 with approximately 560-nm outer diameter. As far as can be recognized, all the helicity possesses a right-handed helical motif. Since the exciton-coupling band of the organogel also shows R (right-handed) helicity, we consider that a microscopic helicity is reflected by a macroscopic helicity.

Helical ribbon aggregate composed of a crown-appended @entity165 derivative which acts as an amphiphilic gelator of organic solvents and as a template for chiral XXXX transcription.

@entity4625 :: ('MESH:D019904', 'Chemical') :: ['Sol'] @entity1472 :: ('CHEBI:46882', 'Chemical') :: ['amino'] @entity2708 :: ('3635', 'Species') :: ['Cotton'] @entity9840 :: ('MESH:C036260', 'Chemical') :: ['1-hexanol'] @entity9104 :: ('CHEBI:17741', 'Chemical') :: ['DMF'] @entity37313 :: ('MESH:C009850', 'Chemical') :: ['azobenzene'] @entity1324 :: ('MESH:D000096', 'Chemical') :: ['acetone'] @entity1626 :: ('MESH:C032159', 'Chemical') :: ['acetonitrile'] @entity3733 :: ('MESH:D004121', 'Chemical') :: ['DMSO'] @entity3440 :: ('MESH:D012822', 'Chemical') :: ['silica'] @entity10439 :: ('MESH:D020001', 'Chemical') :: ['1-butanol'] @entity1068 :: ('MESH:D000431', 'Chemical') :: ['ethanol'] @entity1543 :: ('MESH:D019342', 'Chemical') :: ['acetic acid'] @entity165 :: ('MESH:D002784', 'Chemical') :: ['cholesterol'] @entity23149 :: ('MESH:C040733', 'Chemical') :: ['tetraethoxysilane']
@entity3440 :: (MESH:D012822,Chemical) :: ['silica']
