Molecular Domino Toppling for Directed Self-Erasing Information Transfer

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Ying Li - , Karlsruhe Institute of Technology (Author)
  • Abhinav Chandresh - , Karlsruhe Institute of Technology, Free University of Berlin (Author)
  • Hung Hsuan Lin - , Chair of Theoretical Chemistry (Author)
  • Nina Vankova - , Chair of Theoretical Chemistry (Author)
  • Dragos Mutruc - , Humboldt University of Berlin (Author)
  • Thomas Heine - , Chair of Theoretical Chemistry, Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Author)
  • Stefan Hecht - , Humboldt University of Berlin (Author)
  • Lars Heinke - , Karlsruhe Institute of Technology, Free University of Berlin (Author)

Abstract

In the pursuit of more secure information transfer, advanced nanoelectronic technologies and nanomaterials must be developed. Here, a material is presented able to undergo an unprecedented light-pumped directional charge-transfer process reminiscent of toppling dominoes. The material is based on ortho-fluorinated azobenzene molecules which are organized in molecular rows by the regular array of a metal–organic framework. The azobenzene molecules undergo light-induced trans→cis forward as well as electrocatalytic cis→trans backward isomerization. The findings reveal that electron hopping occurs in a sequential and propagating manner between the light-generated cis isomers along with an isomerization of the sample to the trans-state. Thus, light can be used to locally write information, which subsequently can be read out by the transferred charge with simultaneous deletion of the information. This freely repeatable, self-erasing domino information transfer is a groundbreaking new mechanism to process information on the molecular level that may find application in encryption.

Details

Original languageEnglish
Article number2419195
JournalAdvanced materials
Volume37
Issue number26
Publication statusPublished - 3 Jul 2025
Peer-reviewedYes

External IDs

PubMed 40190219

Keywords

Keywords

  • azobenzenes, metal–organic frameworks, molecular dominoes, smart material systems