Research Data Leeds Repository

Citation

Nahi, Ouassef, Kulak, Alexander N., Zhang, Shuheng, He, Xuefeng, Aslam, Zabeada, Ilett, Martha, Ford, Ian J., Darkins, Robert and Meldrum, Fiona C. (2025) Dataset for "Polyamines Promote Aragonite Nucleation and Generate Biomimetic Structures". University of Leeds. [Dataset] https://doi.org/10.5518/1177

Dataset description

This dataset supports a study in which we demonstrate that cationic polyamines ranging from small molecules to large polyelectrolytes can exert exceptional control over calcium carbonate polymorph, promoting aragonite nucleation at extremely low concentrations, but suppressing its growth at high concentrations, such that calcite or vaterite form. The data comprises electron microscopy and optical microscopy images of calcite and aragonite crystals, and shows the preparation of aragonite crystals for TEM using FIB. TGA data of crystals including additives is given. The full supplementary information to support the main article is also provided.

Subjects:	F000 - Physical sciences > F100 - Chemistry > F120 - Inorganic chemistry F000 - Physical sciences > F100 - Chemistry > F130 - Structural chemistry F000 - Physical sciences > F100 - Chemistry
Divisions:	Faculty of Engineering and Physical Sciences > School of Chemical and Process Engineering Faculty of Engineering and Physical Sciences > School of Chemistry
Related resources:	Location Type https://doi.org/10.1002/advs.202203759 Publication https://eprints.whiterose.ac.uk/id/eprint/192761/ Publication
License:	Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited:	28 Oct 2025 13:26
URI:	https://archive.researchdata.leeds.ac.uk/id/eprint/1479
Additional details Additional details Creators or authors: Creators ORCID Other ID Email Primary affiliation Primary affiliation ID Primary affiliation ID type Secondary affiliation Secondary affiliation ID Secondary affiliation ID type Nahi, Ouassef https://orcid.org/0000-0002-5752-4329 University of Leeds https://ror.org/024mrxd33 ror Kulak, Alexander N. https://orcid.org/0000-0002-2798-9301 University of Leeds https://ror.org/024mrxd33 ror Zhang, Shuheng https://orcid.org/0000-0001-5277-249X University of Leeds https://ror.org/024mrxd33 ror He, Xuefeng https://orcid.org/0000-0002-7624-2941 University of Leeds https://ror.org/024mrxd33 ror Aslam, Zabeada https://orcid.org/0000-0003-3647-8965 University of Leeds https://ror.org/024mrxd33 ror Ilett, Martha https://orcid.org/0000-0002-3111-1585 University of Leeds https://ror.org/024mrxd33 ror Ford, Ian J. https://orcid.org/0000-0003-2922-7332 UCL https://ror.org/02jx3x895 ror Darkins, Robert https://orcid.org/0000-0001-9683-5675 UCL https://ror.org/02jx3x895 ror Meldrum, Fiona C. https://orcid.org/0000-0001-9243-8517 University of Leeds https://ror.org/024mrxd33 ror Type of data: Dataset Research funders: EPSRC, EPSRC, ERC Grant numbers: EP/R018820/1, EP/T006331/1, DYNAMIN, Grant Agreement No. 788968 Publication date: 2025 Resource language: English Metadata language: English Publisher: University of Leeds Contact email: F.Meldrum@leeds.ac.uk Last Modified: 28 Oct 2025 14:05

Files

Documentation

ReadMe [3kB] ReadMe [3kB] ReadMe [3kB] Security: Anyone File name: README_Meldrum_2025.txt Content type: Documentation Mime-Type: text/plain License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 3kB

Data

Low magnification images [7MB] Low magnification images [7MB] Low magnification images [7MB] Security: Anyone File name: Low_Magnification_images.zip Content type: Data Description: optical micrographs and SEM images of calcite and aragonite crystals images Mime-Type: application/zip License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 7MB

TEM data [265MB] TEM data [265MB] TEM data [265MB] Security: Anyone File name: TEM_data.zip Content type: Data Description: TIF files of TEM images of thin sections of aragonite crystals Mime-Type: application/zip License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 265MB

TGA data [1MB] TGA data [1MB] TGA data [1MB] Security: Anyone File name: TGA_data.zip Content type: Data Description: TGA data and analysis of aragonite crystals that have and have not been previously bleached to removed adsorbed PEI Mime-Type: application/zip License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 1MB

FIB-SEM [7MB] FIB-SEM [7MB] FIB-SEM [7MB] Security: Anyone File name: FIB-SEM.zip Content type: Data Description: TIF files of images showing the FIB-SEM preparation of an aragonite crystals for TEM analysis Mime-Type: application/zip License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 7MB

Early stages aragonite [28MB] Early stages aragonite [28MB] Early stages aragonite [28MB] Security: Anyone File name: Early_stages_aragonite.zip Content type: Data Description: TIF images of early stages of growth of aragonite, and the surfaces of these crystals Mime-Type: application/zip License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 28MB

Supplementary Information [2MB] Supplementary Information [2MB] Supplementary Information [2MB] Security: Anyone File name: Supplementary_Information.pdf Content type: Data Description: pdf file of SI published to accompany article Mime-Type: application/pdf License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 2MB