Title
Solid-state AIEnh-circularly polarised luminescence of chiral perylene diimide fluorophores
Author
Ayano Taniguchi, Daiki Kaji, Nobuyuki Hara, Ryosuke Murata, Shogo Akiyama, Takunori Harad, Atsushi Sudo, Hiroyuki Nishikawa, Yoshitane Imai
Year
2019
Journal
RSC Advances
Abstract
Solid-state organic fluorescent materials are important for the development of electroluminescent sensing devices. Herein, we report that N,N′-bis((R)-1-phenylethyl)perylene-3,4,9,10-tetracarboxylic diimide [(R,R)-BPP] and its antipode [(S,S)-BPP], which contain extended π-electrons through planar perylenes, emit solid-state aggregation-induced-enhanced (AIEnh) circularly polarised luminescence (CPL) in inorganic (KBr) pellets and organic-polymer-film (PMMA- and myo-IPU-film) states; this CPL is difficult to observe in solution. These chiral perylene fluorophores emit AIEnh-CPL with high dissymmetry factors (gCPL) (up to 2.4 × 10−3) and high quantum yields (ΦF, up to 0.43) in the three solid matrices.
Instrument
J-820
Keywords
Circular dichroism, Stereochemistry, Solid state, Cotton effect, Anisotropy, Aggregation, Materials