Photoluminescence of tetrameric silver(I) complexes

Photoluminescence of Tetrameric Copper( I ) Iodide Complexes in Solution

The colorless complexes [Cu(py)I], and [Cu(mor)I], (py = pyridine; mor = morpholine) were shown to be photoluminescent in noncoordinating solvents such as benzene, CH2Cl2, or acetone at room temperature. The red emission (A, = 698 nm) of the pyridine complex in benzene is quite intense (a = 0.04) and decays with a lifetime of T = 0.9 X s. The red photoluminescence (A,, = 654 nm) of the morpholi...

Photoluminescence of Tetranuclear Mercury(i1) Complexes

In recent years we have observed photoluminescence from tetrameric Cu(1) [1], Ag(I) [2], and Au(I) [ 31 clusters in solution or low-temperature glasses. In addition, emission from dimeric Au(I) complexes was reported by other groups [ 4,5 1. We assigned the luminescence of the tetramers to metalcentered s-d transitions which are modified by metal-metal interaction in these d’O clusters [ l-31. ...

Dimeric, trimeric and tetrameric complexes of immunoglobulin G fix complement.

The binding of pure dimers, trimers and tetramers of randomly cross-linked non-immune rabbit immunoglobulin G to the first component and subcomponent of the complement system, C1 and C1q respectively, was studied. These oligomers possessed open linear structures. All three oligomers fixed complement with decreasing affinity in the order: tetramer, trimer, dimer. Complement fixation by dimeric i...

Copper Diamidocarbene Complexes: Characterization of Monomeric to Tetrameric Species

Treatment of CuCl with 1 equiv of the in situ prepared N-mesityl-substituted diamidocarbene 6-MesDAC produced a mixture of the dimeric and trimeric copper complexes [(6-MesDAC)CuCl]2 (1) and [(6-MesDAC)2(CuCl)3] (2). Combining CuCl with isolated, free 6-MesDAC in 1:1 and 3:2 ratios gave just 1 and 2, respectively, while increasing the ratio to >5:1 allowed the isolation of small amounts of the ...

Display Exquisite Ligand Specificity Peptide-MHC Class I Tetrameric Complexes