The use of bridging ligand such as diisocyanides in the synthesis of polynulcear silver and gold complexes leads to the formation of dimeric

trimeric

polymeric structures in the solid state. These organometallic coordination compounds exhibit interesting luminescence properties

which can be studied for the potential applications for the molecular-based optical materials or devices. Much research has been reported on the synthesis and spectroscopic properties of organometallic compounds of silver (or copper) with the diisocyanide ligand

1

8-diisocyano-

p

-menthane(

L

). It was found that both Ag and Cu can form organometallic coordination polymer with L:{[

M

(

L

)

2

][BF

4

]}

n

(

M

=Ag

Cu)

but the crystalline state is different. The molecular weight of the two organometallic polymer have been measured and it is found that the Cu polymer has larger molecular weight and longer polymeric chain

while the Ag polymer shows smaller molecular weight and shorter chain length. By means of the molecular assembly

some heterometallic coordination polymers with 1

8-diisocyano-p-menthane have been synthesized with the different ratio of silver and copper: {[Cu

x

Ag

1-

x

(L)

2

][BF

4

]}

n

(

x

=1.0

(0.95

0.78)

0.52

0.19

0.05

0) whose composition have been determined with X-rays fluorescence spectra

IR spectra and NMR spectra. Silver and copper were introduced into one kind of coordination polymer systems for their similar reaction conditions. From the solubility of product

it can be preliminary predict that the molecular lengths of heterometallic coordination polymers decrease with the increasing of copper content. We further studied the corresponding photophysical properties (absorption spectra and luminescence spectra) of these heterometallic Cu-Ag coordination polymers in detailes. The absorption spectra and luminescence spectra of them both exhibit band shift compared with luminescence of pure Cu and Ag polymers

which indicates that the introduction of copper and silver with different ratio has great influence on the polymer chain structure and the corresponding absorption and emission properties.