Issue 11, 2022

Regulation of solid-state dual-emission properties by switching luminescence processes based on a bis-o-carborane-modified anthracene triad

Abstract

We herein demonstrate not only the design of combination of luminescence processes in dual-emission properties by selecting preparation protocols but also temperature-driven switching of luminescence processes in dual-emission properties based on a bis-o-carborane-substituted anthracene triad in crystals. We synthesized the triad and obtained crystal polymorphs with or without solvent molecules by changing the type of solvent used for recrystallization. From optical measurements, it was shown that dual-emission properties are composed of different photophysical mechanisms. That is, in the absence of solvent molecules the crystal exhibits dual emission of charge transfer (CT) and excimers, while in their presence the crystal exhibits dual emission of locally excited (LE) and CT emission. Furthermore, intensity ratios between them are sensitive to temperature changes. These luminochromic behaviors are suitable for application in ratiometric sensing systems.

Graphical abstract: Regulation of solid-state dual-emission properties by switching luminescence processes based on a bis-o-carborane-modified anthracene triad

Supplementary files

Article information

Article type
Research Article
Submitted
09 mar 2022
Accepted
08 apr 2022
First published
06 may 2022

Mater. Chem. Front., 2022,6, 1414-1420

Regulation of solid-state dual-emission properties by switching luminescence processes based on a bis-o-carborane-modified anthracene triad

K. Yuhara, K. Tanaka and Y. Chujo, Mater. Chem. Front., 2022, 6, 1414 DOI: 10.1039/D2QM00211F

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