Cited by 200Machine Learning in Materials ScienceMagnetism in coordination complexesAdvanced Chemical Physics Studies

Accelerating Chemical Discovery with Machine Learning: Simulated Evolution of Spin Crossover Complexes with an Artificial Neural Network

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Janet, Jon Paul, Chan, Lydia, Kulik, Heather J.·2018·The Journal of Physical Chemistry Letters

Abstract

Machine learning (ML) has emerged as a powerful complement to simulation for materials discovery by reducing time for evaluation of energies and properties at accuracy competitive with first-principles methods. We use genetic algorithm (GA) optimization to discover unconventional spin-crossover complexes in combination with efficient scoring from an artificial neural network (ANN) that predicts spin-state splitting of inorganic complexes. We explore a compound space of over 5600 candidate materials derived from eight metal/oxidation state combinations and a 32-ligand pool. We introduce a strategy for error-aware ML-driven discovery by limiting how far the GA travels away from the nearest ANN training points while maximizing property (i.e., spin-splitting) fitness, leading to discovery of 80% of the leads from full chemical space enumeration. Over a 51-complex subset, average unsigned errors (4.5 kcal/mol) are close to the ANN’s baseline 3 kcal/mol error. By obtaining leads from the trained ANN within seconds rather than days from a DFT-driven GA, this strategy demonstrates the power of ML for accelerating inorganic material discovery.

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Registry

Crossref · 10.1021/acs.jpclett.8b00170

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104 of 104 references verified0 citation errors · 0 not checkable

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  • Optimization of a single property is feasible with either direct experimentation or physics-based modeling but can often be accelerated with machine learning.

    “Optimization of a single property is feasible with either direct experimentation (117, 118) or physics-based modeling (119) but can often be accelerated with ML (43, 120, 121 ).”
  • Because fitness evaluation dictates the overall time for optimization, multiple linear regression or quantitative structure-property relationship models, force field or semiempirical models, or machine learning regression models are preferable to full density functional theory evaluation.

    “Because fitness evaluation dictates the overall time for optimization, MLR (i.e., quantitative structure-property relationship, or QSPR) models (59,60), force field or semiempirical models (36), or ML regression models (e.g., with ANNs) (120) are preferable in comparison to full DFT evaluation.”

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Authors
Janet, J. P., Chan, L., & Kulik, H. J.
Affiliations
Massachusetts Institute of Technology (US)
Corresponding author
Kulik, Heather J.
Venue
The Journal of Physical Chemistry Letters
Published
2018-02-09
Volume
9
Issue
5
Pages
1064-1071
ISSN
1948-7185 (ISSN-L)
OpenAlex
W2786308452
Cited by
200
References
104
Citations by year
2026: 10 · 2025: 20 · 2024: 16 · 2023: 25 · 2022: 20 · 2021: 30 · 2020: 32 · 2019: 31 · 2018: 16
FWCI
10.18
Type
journal article
Language
en
Open access
Locations
  • The Journal of Physical Chemistry Letters (publishedVersion, other-oa)
  • PubMed (publishedVersion)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • Applied Categorical Structures
Funders
  • Division of Chemical, Bioengineering, Environmental, and Transport Systems (CBET-1704266)
  • Burroughs Wellcome Fund (CASI 1010755)
  • Basic Energy Sciences (DE-SC0018096)
  • Massachusetts Institute of Technology (NA)
  • Office of Naval Research Global (N00014-17-1-2956)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Machine Learning in Materials Science
  • Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Magnetism in coordination complexes
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Advanced Chemical Physics Studies
Keywords
spin-crossover complexes, artificial neural networks, genetic algorithm, artificial evolution, chemical space exploration, ligand design

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