期刊
COORDINATION CHEMISTRY REVIEWS
卷 249, 期 13-14, 页码 1372-1381出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ccr.2004.12.018
关键词
trinuclear Au(I) complexes; phosphorescence; heavy-atom effect; aurophilic bonding; X-ray structures
Two nucleophilic trinuclear Au(I) ring complexes, Au-3((p-tolyl)N=C(OEt))(3), 1, and Au-3(mu-(CN3)-N-2,-bzim)(3), 2, form sandwich adducts with organic Lewis acids (C6F6 and C10F8) and electron acceptors (tetracyanoquinodimethane, TCNQ), a neutral polyfunctional inorganic Lewis acid (Hg-3(o-C6F4)(3)), and naked heavy metal cations (Tl+ and Ag+). Fascinating photophysical properties are associated with the adducts formed, including external heavy-atom effect leading to room-temperature phosphorescence of aromatic molecules, quenching of luminescence upon exposure to organic vapors, and sensitization of metal-centered emissions in supramolecular stacks with luminescence thermochromism. Intermolecular interactions, including M-M bonding and pi acid-base interactions, play the major role in influencing the luminescence properties. (c) 2005 Elsevier B.V. All rights reserved.
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