Structural Evolution of an Organic Semiconducting Molecule onto a Soft Substrate. Issue 8 (19th February 2016)

• Record Type: Journal Article
• Authors: Martínez‐Tong, Daniel E.; Ruzié, Christian; Geerts, Yves H.; Sferrazza, Michele
• Is Part Of: Chemphyschem. Volume 17:Issue 8(2016)
• Page Start: 1174
• Page End: 1179
• Publication Date: 2016-02-19
• Subjects: crystal growth -- interfaces -- liquid crystals -- nanostructures -- thin films; Chemistry, Physical and theoretical -- Periodicals; 541.05
• DOI: 10.1002/cphc.201501144
• Languages: English
• ISSNs: 1439-4235

Abstract

Abstract: The structural organization and evolution of the organic semiconducting molecule 2, 7‐dioctyloxy[1]benzothieno[3, 2‐ b ]‐benzothiophene on a soft matrix is studied. Thin films of a blend formed from polystyrene and the molecule were prepared by spin‐coating onto silicon substrates, which were subsequently studied by using a combination of microscopy and scattering techniques. The organic semiconducting molecule segregated to the surface and developed a phase with a different structure to the bulk, as in the case of a substrate induced phase observed previously. Under a solvent vapor annealing procedure, the growth of micrometer‐sized tetragonal crystals onto the polymer surface was observed, which was not evidenced for the silicon substrates. Abstract : Growing semiconducting crystals : The influence of a soft polymer substrate on the crystalline growth of a [1]benzothieno[3, 2‐ b ]benzothiophene (BTBT) derivative is studied. A crystalline phase, with a structure different from the bulk one, is observed. By treating the samples in a solvent atmosphere, micrometer‐sized tetragonal crystals are grown on the polymer surface.