Phosphorescence emission from spatial stacks of phenanthrene units in oligo(9,10-phenanthrene)s

Takahiro Kawata; Masahiro Sonobe; Dai Morikawa; Yu Kitazawa; Yasushi Nomura; Masanobu Uchiyama; Mutsumi Kimura

doi:10.1039/d2cc05414k

Phosphorescence emission from spatial stacks of phenanthrene units in oligo(9,10-phenanthrene)s

Chem Commun (Camb). 2022 Dec 22;59(2):231-234. doi: 10.1039/d2cc05414k.

Authors

Takahiro Kawata¹, Masahiro Sonobe¹, Dai Morikawa², Yu Kitazawa², Yasushi Nomura¹, Masanobu Uchiyama^{2

3}, Mutsumi Kimura^{1

2}

Affiliations

¹ Department of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Ueda, Nagano 386-8567, Japan. mkimura@shinshu-u.ac.jp.
² Research Initiative for Supra-Materials (RISM), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Japan.
³ Advanced Elements Chemistry Laboratory, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.

PMID: 36484249
DOI: 10.1039/d2cc05414k

Abstract

The covalent linkage of phenanthrene units at 9 and 10 positions resulted in a broadening of the absorption band and a red-shift of the fluorescence band in ethanol compared with its monomer. Spatial stacking of phenanthrene units also altered the spectral shape of phosphorescence emission, and the oligomer film emitted phosphorescence at room temperature.

MeSH terms

Biophysical Phenomena
Fluorescence
Phenanthrenes*

Substances

Phenanthrenes