Pseudomorphic amorphization of three-dimensional superlattices through morphological transformation of nanocrystal building blocks

HANDLE オープンアクセス

抄録

Nanocrystal (NC) superlattices (SLs) have been widely studied as a new class of functional mesoscopic materials with collective physical properties. The arrangement of NCs in SLs governs the collective properties of SLs, and thus investigations of phenomena that can change the assembly of NC constituents are important. In this study, we investigated the dynamic evolution of NC arrangements in three-dimensional (3D) SLs, specifically the morphological transformation of NC constituents during the direct liquid-phase synthesis of 3D NC SLs. Electron microscopy and synchrotron-based in situ small angle X-ray scattering experiments revealed that the transformation of spherical Cu₂S NCs in face-centred-cubic 3D NC SLs into anisotropic disk-shaped NCs collapsed the original ordered close-packed structure. The random crystallographic orientation of spherical Cu2S NCs in starting SLs also contributed to the complete disordering of the NC array via random-direction anisotropic growth of NCs. This work demonstrates that an understanding of the anisotropic growth kinetics of NCs in the post-synthesis modulation of NC SLs is important for tuning NC array structures.

収録刊行物

  • Chemical Science

    Chemical Science 15 (7), 2425-2432, 2024-02-21

    Royal Society of Chemistry (RSC)

関連プロジェクト

もっと見る

詳細情報 詳細情報について

  • CRID
    1050862467533150592
  • ISSN
    20416539
    20416520
  • HANDLE
    2433/287354
  • 本文言語コード
    en
  • 資料種別
    journal article
  • データソース種別
    • IRDB

問題の指摘

ページトップへ