A disilane-bonded bis(methylpyridine) Cu( <scp>i</scp> ) complex exhibiting reversible trigonal–tetrahedral switch with stimuli-responsive luminescence
A stimuli-responsive tetranuclear copper(I) complex with 1,1,2,2-tetramethyl-1,2-bis(3-methylpyridin-2-yl)disilane (L1) showed reversible structural transformation between Cu4I4(L1)2·2CH3CN and Cu4I4(L1)2. The change altered copper coordination from a tetrahedral to trigonal type as confirmed by XRD. The solvated form showed stronger blue-green emission (<i>λ</i><sub>em</sub> = 493 nm, <i>Φ</i> = 0.56) than the desolvated form (<i>λ</i><sub>em</sub> = 471 nm, <i>Φ</i> = 0.06). The change in emission intensity in the crystalline state was attributed to the change in structural rigidity or flexibility induced by the coordination or non-coordination of CH<sub>3</sub>CN to the Cu(I) center.
Authors
- Hiroaki Imoto (ORCID: https://orcid.org/0000-0003-1495-3059)
- Masako Kato (ORCID: https://orcid.org/0000-0002-6932-9758)
- Hitoshi Kasai (ORCID: https://orcid.org/0000-0001-9399-0506)
- Kensuke Naka (ORCID: https://orcid.org/0000-0002-4516-6296)
- Toyotaka Nakae (ORCID: https://orcid.org/0000-0002-3971-0611)
- Suguru Ito (ORCID: https://orcid.org/0000-0002-0268-013X)
- Yoshinori Yamanoi (ORCID: https://orcid.org/0000-0002-6155-2357)
- Masaki Yoshida (ORCID: https://orcid.org/0000-0002-4744-2805)
- Showa Kitajima
- Yongjin Zhao
- Kazuma Kikuchi
- K Segawa (ORCID: https://orcid.org/0009-0005-8608-8537)
Institutions
- Kyushu University (JP)
- Yokohama National University (JP)
- Tohoku University (JP)
- Kwansei Gakuin University (JP)
- Kyoto Institute of Technology (JP)
- The University of Tokyo (JP)
- The University of Osaka (JP)
Publication Details
- Journal
- Dalton Transactions
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5dt01893e
- Primary Topic
- Organic Light-Emitting Diodes Research
- Type
- article
- Field-Weighted Citation Impact
- 0.00