Rose in the flask
Some roses grow from flowerbeds, and others appear in chemistry labs. This rose-like hue and pattern formed at the bottom of a flask as dichloromethane solvent evaporated from an aromatic compound sample. The polycyclic aromatic hydrocarbons show useful electronic properties and also imparts color.
Xiaolin Liu, Moore Lab, Department of Chemistry
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Using Raman imaging, for the first time, we report phase-specific particle size distributions and shape characteristics for each phase in a set of 10 commercially available cements. By integrating these physical characteristics with chemical abundance, we establish a new parameter (CSQ) that can predict the 72 h cumulative heat of hydration (R2 = 0.86). This finding underscores the significance of phase-specific particle size distributions in predicting the performance of cementitious systems.
Yating Feng & Krishna C. Polavaram, Garg Lab, Departments of Civil & Environmental Engineering & Department of Chemistry