Published in
Royal Society of Chemistry, Chemical Science, 8(14), p. 1978-1985, 2023
DOI: 10.1039/d2sc06612b
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Unveiling a new aspect of oxocarbons: open-shell character of 4- and 5-membered oxocarbon derivatives showing near-infrared absorption
Journal article published in 2023 by
Takeshi Maeda 
,
Taishi Oka,
Daisuke Sakamaki ,
Hideki Fujiwara ,
Naoya Suzuki ,
Shigeyuki Yagi ,
Tatsuki Konishi,
Kenji Kamada
,
Taishi Oka,
Daisuke Sakamaki ,
Hideki Fujiwara ,
Naoya Suzuki ,
Shigeyuki Yagi ,
Tatsuki Konishi,
Kenji Kamada
This paper is made freely available by the publisher.
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Abstract
Near-infrared absorbing oxocarbon derivatives, so-called squaraine and croconaine dyes, regarded as closed-shell species so far, display the intermediate open-shell character that impacts their one- and two-photon absorption properties.