Luminescent Triphosphine Cyanide d10 Metal Complexes

Gomathy Chakkaradhari, Yi-Ting Chen, Antti J. Karttunen, Minh Thuy Dau, Janne Jänis, Sergey P. Tunik, Pi Tai Chou*, Mei Lin Ho, Igor O. Koshevoy

*Tämän työn vastaava kirjoittaja

    Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

    34 Sitaatiot (Scopus)


    Coinage metal cyanides efficiently react with a triphosphine. PPh2C6H4-PPh-C6H4PPh2 (P3). to give the complexes M(P3)CN, where M = Cu (1), Ag (2), and Au (3), which can further interact with coordinatively unsaturated metal centers [M(P3)]+ to give the homobimetallic [(P3)M-CN-M(P3)]+X- [M = Cu (4a with X- = CF3SO3 - and 4b with X- = BF4 -), Ag (5)] or heterometallic [(P3)Au-CN-Ag(P3)]+ (6) species. Extension of this approach also provided the trinuclear complex [(P3)Cu-NC-Au-CN-Cu(P3)]+ (7). Compounds 1-5 were characterized in the solid state by X-ray crystallography. The NMR spectroscopic studies revealed that all of the complexes except 6 retain their structures in solution. The title compounds are luminescent in the solid state, with quantum yields ranging from 8 to 87%. The observed photoemission originates mainly from the metal-to-ligand charge-transfer states according to time-dependent density functional theory computational studies. The crystalline bimetallic Cu complexes 4a/4b demonstrate extremely high sensitivity of the emission intensity to molecular O2 (KSV1 = 639 atm-1 and LOD = 0.010% for 3 times the signal-to-noise ratio).

    JulkaisuInorganic Chemistry
    DOI - pysyväislinkit
    TilaJulkaistu - 2016
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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