Your browser doesn't support javascript.
loading
Polymorph screening at surfaces of a benzothienobenzothiophene derivative: discovering new solvate forms.
James, Ann Maria; McIntosh, Nemo; Devaux, Félix; Brocorens, Patrick; Cornil, Jérôme; Greco, Alessandro; Maini, Lucia; Pandey, Priya; Pandolfi, Lorenzo; Kunert, Birgit; Venuti, Elisabetta; Geerts, Yves Henri; Resel, Roland.
Afiliación
  • James AM; Institute of Solid State Physics, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria. roland.resel@tugraz.at.
  • McIntosh N; Laboratory for Chemistry of Novel Materials, University of Mons, 7000 Mons, Belgium.
  • Devaux F; Laboratoire de Chimie des Polymères, Université Libre de Bruxelles (ULB), 1050 Bruxelles, Belgium.
  • Brocorens P; Laboratory for Chemistry of Novel Materials, University of Mons, 7000 Mons, Belgium.
  • Cornil J; Laboratory for Chemistry of Novel Materials, University of Mons, 7000 Mons, Belgium.
  • Greco A; Max Planck Institute for Polymer Research, 55128 Mainz, Germany.
  • Maini L; Dipartimento di Chimica "G. Ciamician", University Bologna, 40126 Bologna, Italy.
  • Pandey P; Dipartimento di Chimica "G. Ciamician", University Bologna, 40126 Bologna, Italy.
  • Pandolfi L; Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna viale del Risorgimento, 4, 40136, Bologna, Italy.
  • Kunert B; Institute of Solid State Physics, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria. roland.resel@tugraz.at.
  • Venuti E; Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna viale del Risorgimento, 4, 40136, Bologna, Italy.
  • Geerts YH; Laboratoire de Chimie des Polymères, Université Libre de Bruxelles (ULB), 1050 Bruxelles, Belgium.
  • Resel R; International Solvay Institutes of Physics and Chemistry, Université Libre de Bruxelles, 1050 Bruxelles, Belgium.
Mater Horiz ; 10(10): 4415-4422, 2023 Oct 02.
Article en En | MEDLINE | ID: mdl-37476933
ABSTRACT
The discovery of new polymorphs opens up unique applications for molecular materials since their physical properties are predominantly influenced by the crystal structure type. The deposition of molecules at surfaces offers great potential in the variation of the crystallization conditions, thereby allowing access to unknown polymorphs. With our surface crystallization approach, four new phases are found for an oligoethylene glycol-benzothienobenzothiophene molecule, and none of these phases could be identified via classical polymorph screening. The corresponding crystal lattices of three of the new phases were obtained via X-ray diffraction (XRD). Based on the volumetric considerations together with X-ray fluorescence and Raman spectroscopy data, the phases are identified as solvates containing one, two or three solvent molecules per molecule. The strong interaction of dichloromethane with the oligoethylene glycol side chains of the molecules may be responsible for the formation of the solvates. Temperature-dependent XRD reveals the low thermal stability of the new phases, contrary to the thermodynamically stable bulk form. Nevertheless, the four solvates are stable under ambient conditions for at least two years. This work illustrates that defined crystallization at surfaces enables access to multiple solvates of a given material through precise and controlled variations in the crystallization kinetics.

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Diagnostic_studies / Screening_studies Idioma: En Revista: Mater Horiz Año: 2023 Tipo del documento: Article País de afiliación: Austria

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Diagnostic_studies / Screening_studies Idioma: En Revista: Mater Horiz Año: 2023 Tipo del documento: Article País de afiliación: Austria