New Charge Transfer Cocrystals of F2 TCNQ with Polycyclic Aromatic Hydrocarbons: Acceptor-Acceptor Interactions and Their Contribution to Supramolecular Arrangement and Charge Transfer

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Olga Kataeva - , Russian Academy of Sciences (Author)
  • Kamil Ivshin - , Russian Academy of Sciences (Author)
  • Kirill Metlushka - , Russian Academy of Sciences (Author)
  • Kristina Nikitina - , Russian Academy of Sciences (Author)
  • Vera Khrizanforova - , Russian Academy of Sciences (Author)
  • Yulia Budnikova - , Russian Academy of Sciences (Author)
  • Robert R. Fayzullin - , Russian Academy of Sciences (Author)
  • Shamil Latypov - , Russian Academy of Sciences (Author)
  • Sandra Schiemenz - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Michael Bretschneider - , Chair of Experimental Solid State Physics, Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Alexey Popov - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Stanislav Avdoshenko - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Yulia Krupskaya - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Bernd Büchner - , Clusters of Excellence ct.qmat: Complexity and Topology in Quantum Matter, Chair of Experimental Solid State Physics, Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Martin Knupfer - , Leibniz Institute for Solid State and Materials Research Dresden (Author)

Abstract

A series of new charge-transfer cocrystals of F2TCNQ with anthracene, tetracene, and chrysene was prepared and characterized. The donor and acceptor molecules are arranged in alternating D-A-D-A stacks. The linear acenes in combination with F2TCNQ form layered structures due to in-plane lateral donor-acceptor and acceptor-acceptor interactions via multiple C-H···N and C-H···F hydrogen bonds, which govern the crystal structure and significantly alter face-to-face π-πinteractions. In the cocrystal of F2TCNQ with chrysene no interactions between acceptor molecules are observed, and the π-πinteractions prevail. Thus, the donor-acceptor interplanar distance is the smallest in the chrysene complex despite its lower energy level of the HOMO and weaker donor ability, as determined through electrochemical oxidation potentials in this series of PAHs. The charge-transfer values estimated through empirical correlations and QTAIM analysis also do not manifest a direct dependence on the donor ability of PAHs. Thus, though face-to-face π-πinteractions dictate the formation of cocrystals, the lateral noncovalent interactions are as important for the supramolecular arrangement and charge transfer. UV/vis spectroscopy and electronic structure quantum chemical calculations show that these cocrystals may be classified as small-gap semiconductors with energy gaps of 0.7-1.3 eV.

Details

Original languageEnglish
Pages (from-to)751-762
Number of pages12
JournalCrystal Growth and Design
Volume22
Issue number1
Publication statusPublished - 5 Jan 2022
Peer-reviewedYes