Boron chromophore-containing polyurethanes

Figure 13 Boron chromophore-containing polyurethanes (16 and 17) for NLO applications. (Adapted from ref. 37.)... 

NLO materials (16 and 17) (Fig. 13) have been obtained from polyurethanes by the incorporation of sidechains with boron chromophores.37 The dihydroxy ligand of an azobenzene ligand containing a dimesityl boron acceptor was reacted in a polycondensation fashion with the diisocyanate groups of the polyurethanes to yield the desired polymers. Halogen displacement and transmetallation reactions have been utilized in the development of extended ir-conjugated systems of tri-9-anthrylborane with dendritic structures.38 In one (18) (Fig. 14) of the novel compounds, three identical... 

C. Branger, M. Lequan, R. M. Lequan, M. Large, F. Kajzar, Polyurethanes containing boron chromophores as... 

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See also in sourсe #XX -- [ ]

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