Amorphous solid dispersions: role of the polymer and its importance in physical stability and in vitro performance

Q Shi, H Chen, Y Wang, R Wang, J Xu, C Zhang - Pharmaceutics, 2022 - mdpi.com
Amorphous solid dispersions stabilized by one or more polymer (s) have been widely used
for delivering amorphous drugs with poor water solubilities, and they have gained great …

Building Functional Liquid‐Based Interfaces: From Mechanism to Application

Y Fan, X Huang, J Ji, W Zhang, J Zhang… - Angewandte …, 2024 - Wiley Online Library
Functional liquid‐based interfaces, with their inhomogeneous regions that emphasize the
functionalized liquids, have attracted much interest as a versatile platform for a broad …

Ritonavir Form III: A new polymorph after 24 years

X Yao, RF Henry, GGZ Zhang - Journal of pharmaceutical sciences, 2023 - Elsevier
Polymorphism occurs widely in pharmaceutical solids, and must be thoroughly studied
during product development. Twenty-four years after ritonavir (RTV) Form II materialized, we …

Impact of crystal nuclei on dissolution of amorphous drugs

X Yao, L Yu, GGZ Zhang - Molecular Pharmaceutics, 2023 - ACS Publications
Amorphous drugs are used to improve bioavailability of poorly water-soluble drugs.
Crystallization must be managed to take full advantage of this formulation strategy …

[HTML][HTML] Surface-enhanced crystal nucleation and polymorph selection in amorphous posaconazole

X Yao, KA Borchardt, Y Gui, IA Guzei… - The Journal of …, 2022 - pubs.aip.org
Molecules at a liquid/vapor interface have different organizations and mobilities from those
in the bulk. These differences potentially influence the rate of crystal nucleation, but the …

Physical stability and dissolution behaviors of amorphous pharmaceutical solids: Role of surface and interface effects

Q Shi, SM Moinuddin, Y Wang, F Ahsan, F Li - International Journal of …, 2022 - Elsevier
Amorphous pharmaceutical solids (APS) are single-or multi-component systems in which
drugs exist in high-energy states with long-range disordered molecular packing. APSs have …

Crystallization inhibition in molecular liquids by polymers above the overlap concentration (c*): delay of the first nucleation event

S Song, S Cui, CC Sun, TP Lodge, RA Siegel - Journal of Pharmaceutical …, 2025 - Elsevier
Low concentration polymer additives can significantly alter crystal growth kinetics of
molecular liquids and glasses. However, the effect of polymer concentration on nucleation …

Delaying the first nucleation event of amorphous solid dispersions above the polymer overlap concentration (c*): PVP and PVPVA in posaconazole

S Song, X Yao, C Wang, CC Sun, RA Siegel - Journal of Pharmaceutical …, 2025 - Elsevier
A thorough understanding of effects of polymers on crystallization of amorphous drugs is
essential for rational design of robust amorphous solid dispersion (ASD), since …

Uncovering the Coupling Mechanism of Enhanced Growth of Acephate by Additives: Experiments and Molecular Dynamics Simulations

M Tan, X Huang, W Song, T Wang, N Wang… - Crystal Growth & …, 2023 - ACS Publications
In this study, the effects of polyethylene glycol (PEG) and polyvinylpyrrolidone (PVP) on the
nucleation and crystal growth kinetics of acephate were systematically investigated. The …

Recent progress on crystal nucleation of amorphous solid dispersion

J Zhang, Q Jiang, Z Xu, Q Yang, G Hao… - Crystal Growth & …, 2024 - ACS Publications
Amorphous solid dispersion (ASD) is a highly effective formulation strategy for enhancing
the water solubility and oral bioavailability of drugs that are poorly soluble in water. Despite …