Solution equilibrium between two structures of Perylene-F 2 TCNQ charge transfer co-crystals

Tommaso Salzillo, Raffaele Guido Della Valle, Elisabetta Venuti, Gabriele Kociok-Köhn, Matteo Masino, Alberto Girlando, Aldo Brillante

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Abstract

28We report on the solution growth of the two known structures of Perylene-F 2 TCNQ charge transfer complexes. The transformation accompanied by a marked morphological change from needle 1:1 to platelet 3:2 crystal structure is observed in the mother liquor. Lattice phonon Raman spectroscopy is used for an easy structure identification of the different morphologies before and after the process. X-ray and lattice phonons spectra of reference samples obtained by physical vapor transport is used to identify the two complexes. A fully spectroscopic analysis of the intramolecular Raman modes is presented to estimate the degree of ionicity, which is found to agree with the value previously reported.

Original languageEnglish
Pages (from-to)45-50
Number of pages6
JournalJournal of Crystal Growth
Volume516
Early online date28 Mar 2019
DOIs
Publication statusPublished - 15 Jun 2019

Keywords

  • A1. Lattice phonons
  • A1. Raman spectroscopy
  • A2. Growth from solutions
  • B1. Charge transfer complex

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Salzillo, T., Della Valle, R. G., Venuti, E., Kociok-Köhn, G., Masino, M., Girlando, A., & Brillante, A. (2019). Solution equilibrium between two structures of Perylene-F 2 TCNQ charge transfer co-crystals. Journal of Crystal Growth, 516, 45-50. https://doi.org/10.1016/j.jcrysgro.2019.03.026