Intrinsic Chiroptical Evolution in Perovskite Nanocrystals

Pengbo Ding; Dezhang Chen; Mohsen Tamtaji; GuanHua Chen; Liang Guo; Jonathan E. Halpert

doi:10.1021/acs.jpclett.5c03687

journal article·2026-02-12Open access

Intrinsic Chiroptical Evolution in Perovskite Nanocrystals

Pengbo Ding, Dezhang Chen, Mohsen Tamtaji, GuanHua Chen, Liang Guo, Jonathan E. Halpert

The Journal of Physical Chemistry Letters· Volume 17· Issue 6

Publisher page Open full text

Source abstract

Abstract

Here, we observed chiroptical evolution during the synthesis of perovskite nanocrystals (NCs). Using a steric-delayed nucleation strategy, we slowed the ripening of NCs and observed changes in the circular dichroism (CD) signal of perovskite NCs. Two chiroptical evolution events occurred during NC formation under different conditions, attributed to ligand displacement and NC self-assembly, respectively. Surface characterization and computational studies demonstrate that the ligands initially bind to the NC surface and dissociate during the ripening stage, offering the time window to observe and enhance the intrinsic chirality. Our findings provide a new strategy for studying and designing intrinsically chiral perovskite nanostructures.

Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Metamaterials and Metasurfaces Applications · Advanced NMR Techniques and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry

The Hong Kong University of Science and Technology

Department of Mechanical and Energy Engineering

Southern University of Science and Technology

Hong Kong Quantum AI Lab Limited, Pak Shek Kok, Hong Kong SAR 999077, China

The University of Hong Kong

SUSTech Energy Institute for Carbon Neutrality

Funding

Research Grants Council, University Grants Committee · Innovation and Technology Fund · Southern University of Science and Technology · Hong Kong University of Science and Technology · Hong Kong Quantum AI Lab

References (29)

Show source-provided references

1. 10.1002/adma.20200550610.1002/adma.202005506 ↗

2. 10.1016/j.matt.2023.04.00210.1016/j.matt.2023.04.002 ↗

3. 10.1038/s41467-024-47657-y10.1038/s41467-024-47657-y ↗

4. 10.1038/s41578-020-0181-510.1038/s41578-020-0181-5 ↗

5. 10.1093/nsr/nwae21210.1093/nsr/nwae212 ↗

6. 10.1002/anie.20120748910.1002/anie.201207489 ↗

7. 10.1021/nl504369x10.1021/nl504369x ↗

8. 10.1021/nn404832f10.1021/nn404832f ↗

9. 10.1002/adma.20190597510.1002/adma.201905975 ↗

10. 10.1515/nanoph-2020-047310.1515/nanoph-2020-0473 ↗

11. 10.1002/adma.20240776410.1002/adma.202407764 ↗

12. 10.1002/smll.20190207910.1002/smll.201902079 ↗

13. 10.1002/adma.20241008710.1002/adma.202410087 ↗

14. 10.1002/adom.20220312510.1002/adom.202203125 ↗

15. 10.1002/adma.20230578410.1002/adma.202305784 ↗

16. 10.1039/D0NR05232A10.1039/D0NR05232A ↗

17. 10.1038/s41467-020-15728-510.1038/s41467-020-15728-5 ↗

18. 10.1021/acs.jpclett.3c0258110.1021/acs.jpclett.3c02581 ↗

19. 10.1002/adom.20230247710.1002/adom.202302477 ↗

20. 10.1021/jacs.1c1354410.1021/jacs.1c13544 ↗

21. 10.1021/acsnano.6b0349610.1021/acsnano.6b03496 ↗

22. 10.1039/D2NR06751J10.1039/D2NR06751J ↗

23. 10.1002/adma.20190559410.1002/adma.201905594 ↗

24. 10.1021/jacs.4c1249010.1021/jacs.4c12490 ↗

25. 10.1016/j.matt.2023.12.00710.1016/j.matt.2023.12.007 ↗

26. 10.1038/s41586-022-05486-310.1038/s41586-022-05486-3 ↗

27. 10.1021/jacs.4c0959210.1021/jacs.4c09592 ↗

28. 10.1039/D2NH00111J10.1039/D2NH00111J ↗

29. 10.1039/C9NR09233A10.1039/C9NR09233A ↗