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Controlling Polymorphism Using Optimal Electric Fields

Project description

From trial-and-error to predictive crystal design

Many substances, such as medicines and food, can take different crystal forms, a phenomenon known as polymorphism. Since these forms often behave differently, affecting safety and performance, controlling which one grows is crucial but remains difficult and unpredictable. Supported by the Marie Skłodowska-Curie Actions programme, the CLUSTERS project aims to address this by using electric fields to guide the crystallisation process. By developing new open-source software and performing advanced quantum simulations, researchers will learn how to precisely trigger a desired crystal structure. This could mark an industry shift from trial-and-error to predictive design, helping create safer drugs and better electronics. Ultimately, CLUSTERS aims to support greener, sustainable technology and to equip scientists with the tools to solve major engineering challenges.

Objective

Polymorphism, the ability of a compound to crystallize in multiple forms, has enormous implications for pharmaceuticals, electronics, and food, where small structural differences can radically alter stability, performance, or safety. Yet, despite decades of research, reliable strategies to control polymorph selection remain elusive. The CLUSTERS project (Controlling poLymorphism USing opTimal ElectRic fieldS) aims to deliver the first predictive theoretical framework to design external electric fields that can selectively induce or interconvert specific polymorphs.

The project will proceed through three research stages. First, I will extend and generalize an optimal control model, originally developed for molecular reactions, to periodic crystalline systems, releasing it as open-source software. Next, I will map nucleation pathways and interconversion mechanisms of representative organic crystals using quantum chemical simulations. Finally, I will apply the new electric-field model to these systems, demonstrating how optimally oriented fields can drive polymorph selection or conversion. Results will be validated against literature data and expert consultation, ensuring feasibility and transferability.

CLUSTERS will thus establish a systematic, quantitative route to polymorph control, moving from empirical trial-and-error to predictive design principles. Beyond advancing fundamental understanding, the outcomes will guide crystal engineers, providing design rules to mimic field effects through molecular functionalization. This approach addresses major industrial challenges in pharmaceuticals and materials science, while aligning with Horizon Europe objectives of fostering scientific excellence, open science, and greener, more sustainable technologies. By training me in theoretical chemistry, software development, and soft skills, the fellowship will also strengthen my career trajectory toward independence in theoretical chemistry.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2025-PF

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Coordinator

UNIVERSITAT DE BARCELONA
Net EU contribution
€ 209 914,56
Address
GRAN VIA DE LES CORTS CATALANES 585
08007 Barcelona
Spain
Region
Este Cataluña Barcelona
Activity type
Higher or Secondary Education Establishments
Links
Total cost
No data