Doklady Chemistry

Synthesis and photophysical properties of novel conjugated polymers with 4, 5-diaza-9, 9′-spirobifluorene fragments in the main chain

ML Keshtov, SI Pozin, DV Marochkin, VP Perevalov…

Index: Keshtov; Pozin; Marochkin; Perevalov; Petrovskii; Blagodatskikh; Khokhlov Doklady Chemistry, 2012 , vol. 442, # 2 p. 50 - 56

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Abstract

The composition and structure of the intermediate compounds and target product were confirmed by the data of elemental analysis and 1H and 13C NMR spec troscopy (see Experimental). In the 1H NMR spec trum of compound III, the resonances of all protons are observed in the aromatic region at δ= 8.8–6.7 ppm as one singlet, three doublets, and one mul tiplet corresponding to the protons of the phenyl and bipyridyl fragments (Fig. 1a). The ...