Circularly polarised luminescence (CPL) control of oligopeptide-Eu(iii) hybridized luminophores by interaction with peptide side chains

Yuki Mimura; Takuya Sato; Yuki Motomura; Hiroki Yoshikawa; Motohiro Shizuma; Mizuki Kitamatsu; Yoshitane Imai

doi:10.1039/c9ra09708b

Circularly polarised luminescence (CPL) control of oligopeptide-Eu(iii) hybridized luminophores by interaction with peptide side chains

RSC Adv. 2020 Jan 14;10(5):2575-2580. doi: 10.1039/c9ra09708b.

Authors

Yuki Mimura¹, Takuya Sato¹, Yuki Motomura¹, Hiroki Yoshikawa¹, Motohiro Shizuma², Mizuki Kitamatsu¹, Yoshitane Imai¹

Affiliations

¹ Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University 3-4-1 Kowakae Higashi-Osaka Osaka 577-8502 Japan y-imai@apch.kindai.ac.jp kitamatu@apch.kindai.ac.jp.
² Department of Biochemistry, Osaka Research Institute of Industrial Science and Technology 1-6-50 Morinomiya, Joto-ku Osaka 536-8553 Japan.

Abstract

Chiral oligopeptide-naphthalene/Eu(iii) hybridized luminophores emit strong circularly polarised solution-state luminescence (CPL) from Eu(iii) at 592 and 614 nm (|g _CPL| ≤ 2.1 × 10^-2). Although the peptide ligands have matching absolute configurations, the CPL sign is controllable by varying the number of naphthalene units and peptide/Eu(iii) coordination ratio.