Fig. 6
In situ time-resolved absorption spectra collected from one cyclohexane dispersion. When the sample (~31 mg prepared similar as that for Fig. 1) was dispersed in cyclohexane (3 mL) at 50 °C (a), there was a limited change in absorbance observed at 322 nm for up to 200 min (from dark blue to gray). When this dispersion was cooled to 25 °C, MSC-311 started to develop around 2 h (b). When this dispersion (after 20 h at 25 °C) was then placed at 50 °C, a MSC-311⇒MSC-322 transformation readily took place (c). Therefore, the evolution of MSC-322 via the solid–solid phase transformation from MSC-311 in dispersion at 50 °C (c) appears to be much more efficient than that the liquid–solid phase transformation from the IP in dispersion at 50 °C (a)
