Magnetooptic investigation of the rod to coil transition in solutions of polydiacetylene poly(4-BCMU)

Publisher Website
Google Scholar
Abstract
Cotton–Mouton measurements on dilute solutions of polydiacetylene poly(4-BCMU) are reported. Measurements of dΔn/dH2 vs temperature indicate that in equilibrium the red phase contains small aggregates of rods, generally numbering N<5. Measurements made at fixed temperature over three decades of time after rapid cooling from the yellow into the red phase indicate that the rod-to-coil transition is a single chain process, with rod aggregation occurring immediately thereafter.