Molecular alignments of σ phase in co-evaporated pentacene and perfluoropentacne film on SiO2 studied by grazing-incidence X-ray diffraction. (2nd September 2017)

• Record Type: Journal Article
• Authors: Hirosawa, Ichiro; Watanabe, Takeshi; Koganesawa, Tomoyuki; Tada, Keisuke; Yoshimoto, Noriyuki
• Is Part Of: Molecular crystals and liquid crystals. Volume 654(2017)
• Page Start: 47
• Page End: 52
• Publication Date: 2017-09-02
• Subjects: GIXD -- pentacene -- perfluoropentacene -- reciprocal lattice space mapping; Molecular crystals -- Periodicals; Liquid crystals -- Periodicals; Liquid crystals; Molecular crystals; Periodicals; 548
• DOI: 10.1080/15421406.2017.1355212
• Languages: English
• ISSNs: 1542-1406

Abstract

ABSTRACT: Grazing-incidence X-ray diffraction experiment suggested that σ-phase of pentacene and perfluoropentacene co-evaporated film was composed of polymorphs. Two ordered alloy and one random alloy alignments were found. Tilt angles of pentacene and perfluoropentacene were 20° and 21° in one ordered alloy alignment. The other ordered alloy alignment and random alloy alignment resembles to each other. Tilt angles of pentacene and perfluoropentacene was between 5° and 14°. Tilt angles of pentacnene and perfluoropentacene in amorphous phase were also estimated to be 20°.