8.

Photographic images of the ink trails in the flow generated by stirring CW at 600 rpm, in the (a) middle and (b) bottom of a 1 cm sample cuvette. (c) Incident light position during the CD measurement and schematic illustrations of the helically and horizontally ordered nanostructures, and helically displaced nanostructures along the optical path. (d,e) CD and LD spectra of the solution of 1 (3.0 × 10^–4 M) under stirring CW at 1000 rpm and upon shifting the position of the incident light from (a) the center (X = 0 mm) to (h) the bottom (X = 7 mm) by pulling up the cuvette in 1 mm steps. (f,g) Plots of the CD and LD intensities at 452 nm versus the incident light position (X) from panel (c).