In contrast to traditional conjugated polymer, the non-conjugated polycyanate network represents an interesting example to work with. Close packings among the phenylene and s-triazine rings in polycyanate may introduce £k-£k interaction and thereby, induce light emission. There is an important relationship between molecular packing and photo-luminescence properties. To clarify it, we also add aromatic fluorophore to hopefully alter the packing situation and from the response, further evaluation can be made. Detailed molecular packing in the network polycyanate can be evaluated by the molecular simulation technique. The simulation results for the pure polycyanate show that the most-likely inter-ring distance is 3 ~ 5

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