Issue 6, 2023, Issue in Progress

Solvent-dependent fluorescence behaviour of imide-fused [n]phenacenes (n = 3, 5, 7)

Abstract

Imide-fused [n]phenacenes (nPDIs, n = 3, 5, 7) were systematically synthesised and their electronic features were investigated by electrochemical and electronic spectral measurements. nPDIs showed two reduction waves attributed to formation of radical ions and dianions. 3PDI produced blue fluorescence independent of solvent polarity. In contrast, 5PDI and 7PDI displayed marked positive solvatofluorochromism due to intramolecular charge transfer characters between the imide moieties and phenacene π cores in the excited state. The spectral features were analyzed by the Lippert–Mataga relationship and theoretical calculations.

Graphical abstract: Solvent-dependent fluorescence behaviour of imide-fused [n]phenacenes (n = 3, 5, 7)

Article information

Article type
Paper
Submitted
06 Dec 2022
Accepted
23 Jan 2023
First published
30 Jan 2023
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2023,13, 4096-4101

Solvent-dependent fluorescence behaviour of imide-fused [n]phenacenes (n = 3, 5, 7)

K. Nose, K. Yoshioka, M. Yamaji, F. Tani, K. Goto and H. Okamoto, RSC Adv., 2023, 13, 4096 DOI: 10.1039/D2RA07771J

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