摘要:
A series of isolated binuclear copper(I) thiolate and selenolate complexes [Cu-2(ER)(2)(dpppt)(2)] (1, E = S, R = C4H3S; 2, E = S, R = p-C6H4OMe; 3, E = Se, R = C6H5; 4, E = Se, R = p-C6H4SMe; 5, E = Se, R = p-C6H4NMe2) was synthesized. It was found that the luminescence of these complexes could be modulated by the chalcogenolate ligands. The five complexes show optical transitions with HOMO-LUMO gaps of ca. 2.95 eV (1), 2.82 eV (2), 2.99 eV (3), 2.95 eV (4) and 2.64 eV (5), respectively. Two of them (2 and 5) show a significant luminescence at room temperature at 465 or 480 nm, respectively. This might most probably result from the influence of the electron donating nature of the substituents -OMe and -NMe2. (C) 2014 Elsevier B.V. All rights reserved.