2015年3月
Photophysical Property of catena-Bis(thiocyanato)aurate(I) Complexes in Ionic Liquids
CRYSTAL GROWTH & DESIGN
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- 巻
- 15
- 号
- 3
- 開始ページ
- 1422
- 終了ページ
- 1429
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/cg501792m
- 出版者・発行元
- AMER CHEMICAL SOC
The photochemistry of a gold(I) thiocyanate complex has been investigated to determine the coordination structure in both the solid and liquid states. The coordination geometries of the supramolecular [Au(SCN)(2)](n) complex and the concomitant exciplex have mainly been analyzed by crystallographic analysis and X-ray absorption spectroscopy. The Au-S bond distance and Au...Au separation of the compound in the S-0 ground state and in the T1 phosphorescent excited state (lambda(ex) = 340 nm) were compared. Upon irradiation with UV light, the excimeric interactions were enhanced, resulting in a contraction of the Au-I...Au-I aurophilic distance by 0.0113(4) angstrom. A broad luminescence spectrum was observed for the one-dimensional chain suprastructure. The time-resolved luminescence spectra indicated the entity of several oligomeric species in the crude liquid without neutral solvent molecules. In addition, extended X-ray absorption fine structure spectroscopy exhibited a slight change in the nearest AuS distance due to the photoswitched transformation. The deformation of the (Au---Au)* exciplexes was not apparently promoted in the liquid state with the asymmetrical imidazoium cations having a nonlocal charge distribution in the present observation. This is plausibly due to a flexible molecular structure and a property in the liquid state. In conclusion, the photoexcited nature of the pseudo-one-dimensional complexes has emerged in controlling bond distances among the supramolecular networks.
- リンク情報
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- DOI
- https://doi.org/10.1021/cg501792m
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000350614400051&DestApp=WOS_CPL
- URL
- http://www.scopus.com/inward/record.url?eid=2-s2.0-84929224910&partnerID=MN8TOARS
- URL
- http://orcid.org/0000-0001-8160-8373
- ID情報
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- DOI : 10.1021/cg501792m
- ISSN : 1528-7483
- eISSN : 1528-7505
- ORCIDのPut Code : 44016350
- SCOPUS ID : 84929224910
- Web of Science ID : WOS:000350614400051