Observation of Photophysical Processes of a Heptacene Derivative: Monomeric Behavior in Homogeneous Solution and Singlet Fission in Thin Film

Journal of the American Chemical Society 2026 Open access

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Authors: Shinjiro Suzuki, Hayato Sakai, M. Yamauchi, Hironobu Hayashi, Yoshiyuki Mizuhata, Tatsuhisa Kato, Takashi Hirose, Taku Hasobe, Hiroko Yamada
DOI: 10.1021/jacs.5c14689
Cited by: 1
References: 72

Abstract

High Resolution Image Download MS PowerPoint Slide A soluble heptacene derivative, 5,9,14,18-tetrakis(triisopropylsilylethynyl)-heptacene ( TIPS-Hep ), was synthesized in situ from an α-diketone precursor via the Strating–Zwanenburg reaction, and its photophysical properties were comprehensively characterized in both solution and thin-film states. In deoxygenated dilute tetrahydrofuran (THF) solution, TIPS-Hep exhibited monomeric behavior. Absorption peaks were observed at 671, 737, 820, and 970 nm, accompanied by a shoulder at 870 nm, while fluorescence peaks were observed at 894 and 961 nm with a fluorescence lifetime (τ S ) of

Fields of Study & Subjects

Synthesis and Properties of Aromatic Compounds Organic Electronics and Photovoltaics Photochemistry and Electron Transfer Studies

Publication details

Journal / source
Journal of the American Chemical Society
Publisher
American Chemical Society (ACS)
Volume
148
Issue
6
Pages
6000–6011
Publication date
5 February 2026
Language
EN