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Elastic and bright assembly-induced luminescent crystals of platinum(II) complexes with near-unity emission quantum yield.
Makino, Yusuke; Yoshida, Masaki; Hayashi, Shotaro; Sasaki, Toshiyuki; Takamizawa, Satoshi; Kobayashi, Atsushi; Kato, Masako.
Affiliation
  • Makino Y; Department of Chemistry, Faculty of Science, Hokkaido University, North-10 West-8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan.
  • Yoshida M; Department of Chemistry, Faculty of Science, Hokkaido University, North-10 West-8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan.
  • Hayashi S; Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, 1 Gakuen-Uegahara, Sanda, Hyogo 669-1330, Japan. masaki.yoshida@kwansei.ac.jp.
  • Sasaki T; School of Environmental Science and Engineering and Research Centre for Molecular Design, Kochi University of Technology, 185 Miyanokuchi, Tosayamada, Kami, Kochi 782-8502, Japan.
  • Takamizawa S; Department of Materials System Science, Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan.
  • Kobayashi A; Department of Materials System Science, Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan.
  • Kato M; Department of Chemistry, Faculty of Science, Hokkaido University, North-10 West-8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan.
Dalton Trans ; 52(26): 8864-8872, 2023 Jul 04.
Article in En | MEDLINE | ID: mdl-36847788
ABSTRACT
Molecular crystals of Pt(II) complexes with metallophilic interactions can provide bright assembly-induced luminescence with colour tunability. However, the brittleness of many of these crystals makes their application in flexible optical materials difficult. Herein, we have achieved the elastic deformation of crystals of polyhalogenated Pt(II) complexes exhibiting bright assembly-induced luminescence. A crystal of [Pt(bpic)(dFppy)] (Hbpic = 5-bromopicolinic acid, HdFppy = 2-(2,4-difluorophenyl)pyridine) and a co-crystal of [Pt(bpic)(dFppy)] and [Pt(bpic)(ppy)] (Hppy = 2-phenylpyridine) were found to exhibit significant elastic deformation due to their highly anisotropic interaction topologies. While the crystal of [Pt(bpic)(dFppy)] exhibited monomer-based ligand-centred 3ππ* emission with an emission quantum yield of 0.40, the co-crystal exhibited bright, triplet metal-metal-to-ligand charge transfer (3MMLCT) emission owing to Pt⋯Pt interactions, thereby achieving a significantly higher emission quantum yield of 0.94.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Dalton Trans Journal subject: QUIMICA Year: 2023 Document type: Article Affiliation country: Japan
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Dalton Trans Journal subject: QUIMICA Year: 2023 Document type: Article Affiliation country: Japan