Control over size, shape, and photonics of self-assembled organic nanocrystals

Chen Shahar, Yaron Tidhar, Yunmin Jung, Haim Weissman, Sidney R Cohen, Ronit Bitton, Iddo Pinkas, Gilad Haran, Boris Rybtchinski

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


The facile fabrication of free-floating organic nanocrystals (ONCs) was achieved via the kinetically controlled self-assembly ofsimple perylene diimide building blocks in aqueous medium. The ONCs have a thin rectangular shape, with an aspect ratio that is controlled by the content of the organic co-solvent (THF). The nanocrystals were characterized in solution by cryogenic transmission electron microscopy (cryo-TEM) and small-angle X-ray scattering. The ONCs retain their structure upon drying, as was evidenced by TEM and atom force microscopy. Photophysical studies, including femtosecond transient absorption spectroscopy, revealed a distinct influence of the ONC morphology on their photonic properties (excitation energy transfer was observed only in the high-aspect ONCs). Convenient control over the structure and function of organic nanocrystals can enhance their utility in new and developed technologies.
Original languageEnglish
Pages (from-to)42-51
Number of pages10
JournalBeilstein Journal of Organic Chemistry
Issue number1
StatePublished - 6 Jan 2021


  • aromatic amphiphiles
  • exciton diffusion
  • organic nanocrystals
  • perylene diimides
  • self-assembly


Dive into the research topics of 'Control over size, shape, and photonics of self-assembled organic nanocrystals'. Together they form a unique fingerprint.

Cite this