  We studied the correlation between the molecular structure and the formation
of helical nanofilaments (HNFs) of bent-core dimeric molecules with varying
linkage lengths. To obtain precise structural data, a single domain of HNFs was
prepared under physical confinement using porous 1D nanochannels, made up of
anodic aluminium oxide films. Electron microscopy and grazing incidence X-ray
diffraction were used to elucidate the linkage length-dependent formation of
HNFs.
