Knots photophysical properties

The extensive kinetic studies of their cyanide-assisted demetalation (determination of rates and mechanisms [110]) as well as the study of their electrochemical and photophysical properties [97] enabled us to gain insight into the particular properties of knotted structures which appeared to be strongly determined by both topological and structural (i.e. geometrical) effects. 

Table 1. Kinetic, electrochemical, and photophysical properties of dicopper(I) knots containing polymethylene bridges.

Table 12. Selected photophysical properties for the dicopper(I) knots with the interchromophoric polymethylene spacer ...

Photophysical Properties of Catenate. and Knots 617 Table 13. Luminescence data for the CuIVI.14" knots in CH2Cl2 ... 

These coherent results simultaneously gained by kinetic, electrochemical, and photophysical studies strongly suggest that the kinetic and electronic properties of the knots and their unknotted analogs are not governed by the topological factors... 

In summary, for this family of dicopper(I) dinuclear knots the photophysical and electrochemical properties allow them to be ordered in a series where the two extremes are CuCu.12 and CuCu.l , the former being the most rigid and the one in which Cu is best shielded. This shows that the length of the shorter Z connection plays an important role in determining the fine structure of the geometric arrangement. 

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