We 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.
Salzillo T., Della Valle R.G., Venuti E., Kociok-Kohn G., Masino M., Girlando A., et al. (2019). Solution equilibrium between two structures of Perylene-F 2 TCNQ charge transfer co-crystals. JOURNAL OF CRYSTAL GROWTH, 516, 45-50 [10.1016/j.jcrysgro.2019.03.026].
Solution equilibrium between two structures of Perylene-F 2 TCNQ charge transfer co-crystals
Salzillo T.
;Della Valle R. G.;Venuti E.;Brillante A.
2019
Abstract
We 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
