Fig. 6. UV-vis absorption spectral changes of 10c (2.0 × 10−5 M) in DMSO/H2O (a) with increasing H2O fraction from 5 to 90% at room temperature and (b) during heating from 293 to 363 K at 1 K min−1 in DMSO/H2O (7 : 3, v/v). (c) Plots of the variation in the degree of aggregation (αagg) of 10c during cooling from 353 to 293 K at 1 K min−1 in DMSO/H2O (7 : 3, v/v), monitored at 577 nm. (d) TEM image and (e) XRPD pattern of aggregated 10c and (f) schematic illustration of assumed molecular alignment for the aggregates of 10c.
