In situ Growth Transition Towards Helical Crystals of Achiral Molecules
SCIE
SCOPUS
- Title
- In situ Growth Transition Towards Helical Crystals of Achiral Molecules
- Authors
- Yoon, Youngkwan; Koo, Jin Young; Choi, Hee Cheul
- Date Issued
- 2023-11
- Publisher
- WILEY
- Abstract
- The synthesis of chiral crystals such as helical crystals is important due to their chirality-dependent applications in various fields. Since chiral crystals of achiral molecules are getting more attention, it is important to establish synthetic strategies for helical crystals of achiral molecules. Quite surprisingly, there are numerous examples of helical crystals of achiral molecules, although they are mostly obtained without specific synthetic strategies. Herein, it is proposed that Eshelby twist can be applied to noncovalent molecular crystals by introducing screw dislocations and demonstrates a successful synthesis of helical tube crystals of achiral titanyl phthalocyanine by vapor-phase crystal growth. The dislocations form where interfaces are created via growth transition from wire growth to tube growth upon growth temperature change. The screw dislocation is confirmed by Burgers vector analysis using transmission electron microscopy. The screw dislocation induces crystal twisting along the growth direction to dissipate the strain applied around the dislocation. The diffraction peak broadening of the (200) and (002) planes confirms the nonuniform strain, i.e., twisting force. This work offers a new approach for the synthesis of helical crystals from achiral molecules.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/123476
- DOI
- 10.1002/sstr.202300134
- Article Type
- Article
- Citation
- Small Structures, vol. 4, no. 11, 2023-11
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.