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Chiral lanthanide lumino-glass for a circularly polarized light security device

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Title: Chiral lanthanide lumino-glass for a circularly polarized light security device
Authors: Kitagawa, Yuichi Browse this author →KAKEN DB
Wada, Satoshi Browse this author →KAKEN DB
Islam, M. D. Jahidul Browse this author
Saita, Kenichiro Browse this author
Gon, Masayuki Browse this author →KAKEN DB
Fushimi, Koji Browse this author →KAKEN DB
Tanaka, Kazuo Browse this author →KAKEN DB
Maeda, Satoshi Browse this author →KAKEN DB
Hasegawa, Yasuchika Browse this author →KAKEN DB
Issue Date: 25-Aug-2020
Publisher: Nature Publishing Group
Journal Title: Communications Chemistry
Volume: 3
Issue: 1
Start Page: 119
Publisher DOI: 10.1038/s42004-020-00366-1
Abstract: Circularly polarized luminescence from chiral organic molecules is used in devices such as security tags, lasers, or data storage. Here, the authors use (+)-3-(trifluoroacetyl)camphor and a glass-promoting phosphine oxide ligand to achieve a chiral Eu(III) lumino-glass. Artificial light plays an essential role in information technologies such as optical telecommunications, data storage, security features, and the display of information. Here, we show a chiral lanthanide lumino-glass with extra-large circularly polarized luminescence (CPL) for advanced photonic security device applications. The chiral lanthanide glass is composed of a europium complex with the chiral (+)-3-(trifluoroacetyl)camphor ligand and the achiral glass promoter tris(2,6-dimethoxyphenyl)phosphine oxide ligand. The glass phase transition behavior of the Eu(III) complex is characterized using differential scanning calorimetry. The transparent amorphous glass shows CPL with extra-large dissymmetry factor ofg(CPL) = 1.2. The brightness of the lumino-glass is one thousand times larger than that of Eu(III) luminophores embedded in polymer films of the same thickness at a Eu(III) concentration of 1 mM. The application of the chiral lanthanide lumino-glass in an advanced security paint is demonstrated.
Type: article
Appears in Collections:化学反応創成研究拠点:ICReDD (Institute for Chemical Reaction Design and Discovery : ICReDD) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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