title: An augmented volume-based model of the glass transition temperature of 209 molecular liquids.
abstract: It is well known that the amorphous state can greatly enhance the bioavailability of drugs. However, comparatively few compounds form either liquids at room temperature or glasses above it. We present qualitative insights as to why some molecules would form glasses instead of crystals and a fast, straightforward, physically well founded, and nonproprietary method to calculate the expected glass transition temperature before the synthesis of a new drug. This way, a selection of drug candidates can be screened for one that has a high tendency to vitrify and a preferably low temperature of this transition. The new method works reliably for a great span of possible molecules, encompassing well-known drugs, nutrients, and a multitude of other technically interesting compounds.
authors.affiliation: Interdisciplinary Centre for Advanced Materials Simulation (ICAMS), Ruhr-Universitat Bochum, Universitatsstr 150, Bochum 44780, Germany. Electronic address: ulrich.preiss@rub.de.
authors.forename: Ulrich P
authors.initials: UP
authors.lastname: Preiss
authors.affiliation: Interdisciplinary Centre for Advanced Materials Simulation (ICAMS), Ruhr-Universitat Bochum, Universitatsstr 150, Bochum 44780, Germany.
authors.forename: Muhammad I
authors.initials: MI
authors.lastname: Saleh
mesh_terms: D016000:Cluster Analysis; D003198:Computer Simulation; D003460:Crystallization; D008956:Models, Chemical; D015999:Multivariate Analysis; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D044366:Transition Temperature; D058989:Vitrification
chemical_list: D004364:Pharmaceutical Preparations